New Deeter Low Volume Liquid Dispenser offers automated control and monitoring

 

Temperature Compensated

Automatic Calibration

 

The Deeter Group, market leaders in the design, development and manufacture of electronic sensors and control systems, announce the introduction of their new Low Volume Liquid Dispenser.  Intended for accurate, repeatable dosing of small volumes of chemicals, colors or flavorings, the Low Volume Liquid Dispenser may be used to control any liquid being dispensed in a laboratory or manufacturing process.

 

The new Low Volume Liquid Dispenser is designed to deliver a measured volume of liquid at the press of a button.  In normal use, the operator selects a volume, presses a button and the Dispenser delivers the required volume without further operator intervention.  The volume required is simple to set and the dose is retained in non-volatile memory for repeat operations. Volumes between 0.025 liters and 10 liters can be selected in increments of 0.001 liters.

 

The Dispenser will accurately measure volumes over a flow rate range of between 0.2 liters/minute and 2.5 liters/minute and will automatically compensate for the effects of varying flow-rates and changes in liquid temperature.  A calibration menu allows fine adjustments to the compensation.

 

The Low Volume Liquid Dispenser has two John Guest Speedfit® 8mm push-fit connectors for input and output of fluids.  Wetted surfaces are nylon, PTFE, Buna and acetyl, making the Low Volume Liquid Dispenser suitable for a wide range of fluids over a temperature range of +1 to +65ºC.  Operator controls consist of a three-button keypad and a liquid crystal display.  The display shows the selected volume and progress during dispensing.  A number of additional features are available through the keypad, including pause and restart during dispensing, cancelling dispensing, and manual ‘top-up’ control.

 

Peter Whiteaker, Managing Director of The Deeter Group comments; ”We have over twenty years of experience in designing fluid dispensers and our new Low Volume Liquid Dispenser will be ideal for single users in laboratories to automated systems for low volume dosing.  This new design features temperature controlled accuracy and the convenience of having software provided for control and monitoring from a PC.”

 

The Dispenser has a serial communication option to enable automated control and monitoring by an external computer using the software provided.  Communication is via USB ‘A to B’ cable and the Low Volume Liquid Dispenser is powered by a low-voltage supply, making it safe to use in damp environments or if liquid is spilt.  A 12VDC mains socket adapter is supplied with each Dispenser.

An audible ‘beep’ option is provided to indicate when dispensing has stopped and a further option will produce continuous ‘beeps’ if the flow rate is outside of  the limits for accurate volume measurement.  These audio options can be enabled or disabled through a display menu and are also saved to non-volatile memory and are restored to the operator’s preference after power-up.

The Deeter Group product range includes level sensors, complete wireless sensing systems, leak detectors, level indicators and control equipment, industrial weighing equipment, reed and proximity switches, boiler control equipment, litz and magnetic wire and termination assemblies. For more information on the Deeter Electronics range of sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe, Asia and North and South America. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

 

For more information

Joseph Whiteaker

The Deeter Electronics Ltd.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Deeter add Modbus Gateway Integration to Wireless Sensor System

 

 

The Deeter Group, market leaders in the design, development and manufacture of electronic sensors and control systems, has added a Wireless Modbus Gateway to its range of Wireless Sensor Network products.

 

Any users of Modbus communication protocols will find the new Deeter Wireless Modbus Gateway is a simple and cost effective way to connect a Deeter Wireless Sensor network to a Modbus system to monitor physical or environmental conditions, such as liquid levels, temperature, humidity, vibration, pressure and proximity.

 

The Deeter Wireless Modbus Gateway communicates with the Modbus network via a RS485 port in slave mode; it coordinates the wireless sensor network and manages data acquisition from the sensors using the IEEE 802.15.4™ wireless protocol in the 2.4GHz ISM frequency band.

 

A Deeter Wireless Modbus Gateway may be installed as a component of a new control or measurement system or as an extension to an existing wired sensor system in order to add wireless connected sensors.

 

Alan Marsh, Sales Manager at Deeter Group Ltd. Comments; ” Modbus has become one of the most popular standard communications protocols used in process control and is now amongst the most commonly available means of connecting industrial electronic devices. Our new Modbus Gateway will allow customers to integrate Deeter Wireless Sensor products into existing or new control systems in locations where wireless has cost, safety and convenience advantages over conventional cable connected systems.”

 

Deeter Wireless products may be used indoors or outside and all are rated to IP64, have an operating temperature range of -20ºC to +70ºC and compliant to FCC part 15.

 

The Deeter Group’s comprehensive range of wireless sensors and network components may be used to remotely monitor temperature, pressure, flow, humidity, liquid level, float or proximity switches or any sensor connected to a 4-20mA control loop. Deeter wireless sensor networks are very versatile and can range from a simple single sensor measurement to complex multi sensor and multi-vendor systems with mixed sensor inputs and routers to extend wireless range and offer self-healing mesh networks.

 

For further details on the Deeter Group Modbus Gateway please contact call 01494 566 046, email [email protected] or visit www.deeter.co.uk.

 

The Deeter Group product range includes level sensors, complete wireless sensing systems, leak detectors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems.

 

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe, Asia and North and South America. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

 

For more information

Alan Marsh

The Deeter Electronics Ltd.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Deeter appoint new Sensor Distributor for Asia

New Asian website launched in support of appointment

 

The Deeter Group, market leaders in the design, development and manufacture of electronic sensors and control systems, announce appointment of a new distributor in Singapore. Established in 1996 MaxMega specialises in sales of high performance electronics components and system integration services into the major Asia-Pacific markets.

 

Peter Whiteaker, Managing Director of Deeter Group, comments; ”We have been looking for a well-connected and technically capable sales channel for the Asia-Pacific region for some time and enlisted the aid of the British High Commission to help us find a short list of possible companies. We selected MaxMega for a number of reasons; Singapore has a western business culture very much like the UK, has a great location, excellent infrastructure and is a gateway into our target markets. MaxMega has offices in China, Hong-Kong, Taiwan, Malaysia, Thailand and India and is an experienced technical distributor which will be of great benefit to our Asian customers.”

 

The newly launched Deeter Asia website www.deetergroup.asia provides a local language portal into the main Deeter Group website which offers full technical specifications, data-sheet downloads and online shopping for their leading range of electronic sensors, wireless sensor systems and control and instrumentation systems.

 

The Deeter Group product range includes level switches, float switches, level sensors, continuous level sensors, 4-20mA level sensors, custom level sensors, water level sensors, liquid level sensors, tank level indicators, panel mounted displays, level controllers, wireless sensor systems. For more information on the Deeter Electronics range of sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About MaxMega:

A specialist distributor of active and passive components including Fast/Gigabit Ethernet Switch Controller, System Controller for RISC CPU, High-Speed Physical Layer Solutions, PC Chips sets, CPU, Bluetooth Wireless Solution, Power Management IC and etc. Passive components namely surface mount chip capacitors, precision high power resistors, transformers, connectors, etc. MaxMega serves the major sectors in the hi-tech industry specifically the Data Communications, Data Storage, PC & PDA, Office Equipment, Cellar Phone and Contract Manufacturing.

 

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe, Asia and North and South America. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

 

For more information

Alan Marsh

The Deeter Group.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

New Deeter Liquid Volume Dispenser is Temperature Compensated

 

Automatic Calibration

USB Port Data-Link

 

The Deeter Group, market leaders in the design, development and manufacture of electronic sensors and control systems, announce the introduction of their new Liquid Volume Dispenser. Typical applications include dosing of chemicals, colors, flavorings or control of any liquid being dispensed in a manufacturing process or laboratory.

The Deeter Liquid Volume Dispenser will repeatedly deliver a precise, operator selected, measured volume of liquid at the press of a button. The unit features automatic calibration and is temperature compensated to ensure accurate dosing across the wide temperature range of possible fluids being delivered. A USB data-link and control software suite is provided to allow users to externally control the Liquid Volume Dispenser and collect data for logging and archiving.

The liquid volume required is simple to select and the setting is retained in non-volatile memory for repeat operation. Volumes between 0.10 liters and 100.00 liters can be selected in increments of 0.01 liters. The dispenser will accurately measure volumes over a flow rate range of between 0.6 liters/minute and 5 liters/minute.

Peter Whiteaker, Managing Director of Deeter Group comments;”We designed our first fluid dispenser over twenty years ago. We now see a growing market in many manufacturing and laboratory applications and our new design offers customers temperature controlled accuracy and the convenience of control or data-logging via an external computer.”

The Deter Liquid Volume Dispenser has two Speedfit® push-fit connectors for fluid in and out. These can accommodate a tube with an outside diameter of 8mm. Wetted surfaces are nylon, PTFE, Buna and acetal, making the Liquid Volume Dispenser suitable for a wide range of fluids.

Operator controls consist of a three-button keypad and a liquid crystal display. The display shows the selected volume and progress during dispensing. A number of additional features are available through the keypad, including pause and restart during dispensing, cancelling dispensing, and manual ‘top-up’ control.

An audible ‘beep’ option is provided to indicate when dispensing has stopped and a further option will produce continuous ‘beeps’ if the flow rate is outside of  the limits for accurate volume measurement. These audio options can be enabled or disabled through a display menu and are also saved to non-volatile memory and are restored to the operator’s preference after power-up.

The Liquid Volume Dispenser is powered by a low-voltage supply, making it safe to use if liquid is spilt and a 12VDC mains socket adapter is supplied with each dispenser. Fluid temperature range is +1 to +65ºC and the unit is housed in a 175x125x78mm enclosure. It offers a flow rate range of 0.6 to 5.0 liters per minute with a dispensing volume accuracy of -3%+0% over the flow rate range. Fluid connections are via 8mm outside diameter tube which may be polyethylene, polyurethane, nylon, brass, copper or stainless steel.

The Deeter Group product range includes level sensors, complete wireless sensing systems, leak detectors, level indicators and control equipment, industrial weighing equipment, reed and proximity switches, boiler control equipment, litz and magnetic wire and termination assemblies. For more information on the Deeter Electronics range of sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe, Asia and North and South America. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

 

For more information

Joseph Whiteaker

The Deeter Electronics Ltd.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Deeter Group Introduces a Complete Wireless Sensor System for Industrial Measuring and Control

 

Wireless Base Station with 4-to-20mA Current Loop output

Rugged Battery Powered Wireless Level Sensor

2.4 GHz Frequency band High Power Radio Transceiver

Simple and reliable operation

UK Designed and manufactured

 

The Deeter Group, market leaders in the design, development and manufacture of electronic sensors and control systems, announces the launch of its ground breaking Wireless Sensor System for industrial measurement and control.

 

At the center of the Deeter Wireless Sensor System is the simple-to-use Base Station designed to receive data from remote wireless devices such as the Deeter Liquid Vertical Sensor (LVCS-RF) or Wireless Sender. The base station converts remote sensor input signals into industry standard process outputs and acts as the coordinator for an IEEE 802.15.4 wireless sensor network. It operates on one of 16 radio frequency channels available in the 2.4GHz ISM band. The high power transceiver can achieve a range of greater than 1km, subject to local environmental factors. The internationally recognized IEEE 802.15.4 protocol allows several wireless sensor networks to share the same wireless spectrum without interference.

 

The Base Station provides four open-collector transistor outputs which may be used to drive external relays for pumps and alarms or Deeter’s Dual Level Controller. Continuous analog sensor data such as liquid level is output using a 4-to-20mA current-loop driver which enables interfacing with industrial process controllers or the Deeter Group’s range of Current Loop Indicators. A serial communications channel provides full-duplex RS232 and half-duplex RS485 transceivers allowing software to be developed for linking to PCs, data-loggers, PLCs or other proprietary equipment.

 

Deeter is launching the wireless Base Station with the Liquid Vertical Continuous Sensor – Radio Frequency (LVCS-RF) wireless sensor. The LVCS-RF is designed to measure a continuous liquid level and transmit this information by radio to a Deeter Wireless Base Station at regular intervals.

 

The sensor circuit is fitted inside a Food Industry Standard 316L stainless steel stem attached to the head, with a 55mm magnetic stainless steel ball-float. Standard sensing lengths are 250mm, 500mm, 750mm and 1m. Custom lengths are available on request. The LVCS-RF is powered by a single 3.6V Lithium Thionyl Chloride battery with a life typically of 12 months, has a transmission range up to 1Km in ideal line-of-sight conditions, subject to local environmental factors, and an operating temperature range of -20 to +70ºC.

 

Deeter Electronics also offer a Multi-Channel Wireless Sensor System for more complex installations. This highly cost effective wireless monitoring solution will meet the needs of a large number of smaller industrial monitoring applications. The Multi-Channel system can display the state of up to eight analog sensors and up to thirty two switched inputs.

 

Up to eight sensor nodes, which can be multi-input Deeter Wireless Senders or Deeter Wireless LVCS-RF Liquid Vertical Continuous Sensors, can send information to a Deeter multi-channel base station. Sensor outputs are displayed, for monitoring, on a personal computer connected via an RS485 to USB adaptor using Deeter Data Viewer Software.

 

To increase transmission range and overcome potential interference problems Deeter Electronics provide a Wireless Router and an external antenna kit. Up to four wireless routers may be incorporated into a monitoring system to provide a self-healing wireless mesh network offering maximum signal reliability.

 

The Deeter Group product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems. For more information on the Deeter Electronics range of wireless sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe and the USA. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

 

For more information

The Deeter Electronics Ltd.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Press Release

Deeter Electronics adds “Router” to Extend Range of Industrial Wireless Sensor System

 

Enables high reliability wireless mesh operation

2.4 GHz Frequency band High Power Radio Transceiver

 

July 2010Deeter Electronics, a market leading international company in the design, development and manufacture of electronic sensors and control systems, announces the introduction of a Wireless Router to increase the range and reliability of their recently launched Deeter Wireless Sensor System for industrial measurement and control.

 

The new Wireless Router may be added to a Deeter Wireless Sensor System to significantly increase the range of the wireless communication between sensors and a Base Station. Deeter Wireless Routers may also be used to improve communications reliability.

 

A basic Deeter Wireless Sensor System is comprised of a Base Station and a remote sensor node, either a general purpose Deeter Sender or self contained Liquid Vertical Continuous Sensor (LVCS-RF) probe. The maximum range between these, in ideal conditions, can exceed 1Km. However in many industrial environments the signal will be attenuated by obstructions and fading may result from multiple signal paths caused by reflections. These effects reduce the quality of the communications link and the achievable range. Adding a Deeter Wireless Router to the system extends the effective range and improves signal quality.

 

In use the Wireless Router should be positioned midway between the remote probe or sender and Base Station, possibly offset in order to avoid obstructions that might cause interference. Up to four Routers may be used in a single system with data being retransmitted a number of times before reaching the Base Station. This will greatly extend the transmission range and reliability.

 

The use of multiple Routers allows the wireless network to automatically establish the most effective signal route between probe and Base Station at turn-on. Should this signal path become interrupted for any reason the Router network will re-establish the most efficient and reliable signal path. In this mode the Routers are operating as a self-healing wireless mesh network offering maximum signal reliability.

 

The Deeter Wireless Router must be permanently powered-up to relay messages. Any message sent from a base station to a “sleeping” battery powered remote node or sensor will wait at the last Router until the sensor wakes up and polls for data.

 

The Deeter Wireless Sensor system uses the internationally recognized IEEE 802.15.4 protocol in the 2.4GHz ISM radio band allowing users to install approved devices with no licensing requirements. It operates on one of 16 radio frequency channels available allowing several wireless sensor networks to share the same wireless spectrum without interference.

 

The Deeter Wireless Router is housed in an ABS enclosure with an external antenna. Power is provided by an external 5VDC mains wall mounted adapter connected via cable glands. An optional 3m extension lead and bracket are available for mounting the antenna in a position more favorable to wireless communication should the need arise.

 

Peter Whiteaker, Managing Director of Deeter Electronics, comments; ”Our new Wireless Router is the final piece in our class leading wireless sensor system. Adding one or a number of Routers to a measurement system not only extends the communications range but can greatly improve the reliability of the transmitted data signal. We can now offer our customers a complete, simple to operate, low cost wireless sensor system which provides a very viable alternative to conventional control and instrumentation systems.”

 

The Deeter Group product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems. For more information on the Deeter Electronics range of wireless sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe and the USA. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

Contact:

Deeter Electronics Ltd
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

 

Wireless Technology in Industrial Measurement and Process Control

Introduction

In all manufacturing industries there is a need to collect information for measurement and control of processes and material management. Transducers of many kinds may be installed on machinery, storage tanks, materials and even finished products.

 

The one common factor in all these applications is the need to return data to a central control or monitoring system. Generally this is accomplished by sending data signals along a network of cables. These may be dedicated to the process data or the signals may be multiplexed over an Ethernet system via suitable network adapters.

 

There are a number of common problems associated with a cabled solution in an industrial environment, especially in factories and larger industrial facilities where multiple buildings may involved. Cables are expensive and often difficult to install. In addition to the cost of the cable itself, installation over large industrial spaces, often including high ceilings, spans over doors or roads increase the labour costs, create their own health and safety hazards and can affect the continuous smooth operation of plant equipment during installation. In addition to the high costs of installing cabled control systems, maintaining their reliable operation can be very difficult as they are prone to damage from vehicles, building and maintenance works and occasionally vandalism.

 

Wireless connectivity would seem an obvious alternative to all the downsides of cabled control systems. However the major suppliers of wireless process control systems tend to offer costly, proprietary solutions aimed at large scale production facilities. The high costs and buy-in to complex single source solutions has, in the main, excluded their take-up by small to medium manufacturing, industrial and even agricultural users.

 

Wireless Sensor Systems

The recent advent of compact, low cost, high reliability, license free short range wireless devices enables a new, low cost approach, to wireless connectivity for industrial control systems. Instrumentation companies, such as Deeter Electronics, are now able to integrate wireless communication into sensors and industrial receivers which can transform industrial control and measuring systems. These emerging industrial wireless sensor communication systems greatly reduce the cost and time of installation, increasing convenience and reliability and enable simple relocation of sensors should factory layout change. Some types of wireless probes are battery powered removing an additional layer of installation complexity by not having to provide mains power in remote locations which would be required for conventional measuring instruments.

 

A typical wireless sensor system will be based on a wireless enabled probe communicating directly with a “base station” receiver. In addition to wireless enabled probes other sensor inputs such as analog probes, 4-20mA sensors, float sensors or other switch types can be interfaced to a wireless sensor system via a suitable “sender” adapter which transmits the sensor signals over the wireless link to the base station receiver.

 

A wireless sensor system may also include a number of wireless routers to form a wireless ‘mesh’ network. This improves the reliability of the wireless signal by providing multiple signal paths and allows signals to be automatically re-routed around any broken links in the mesh creating a built-in self-healing capability to further ensure communications reliability.

 

RF Communications

A modern wireless sensor system will be based on the latest very reliable high power RF transceiver modules combined with a rugged external antenna to achieve the best possible wireless communication range. Range can be further extended by adding one or more wireless “routers” which receive and re-transmit the signal with increased gain. A “base station” acts as the coordinator for the wireless network and will provide a range of outputs for integration into control or monitoring equipment. Typical outputs would include a 4-to-20mA current loop driver, a serial communications output via RS232, RS485 or USB and open-collector transistors for relay operation etc. The complete system will operate in the 2.4GHz ISM (Instrumentation Scientific and Medical) frequency band. This allows the system to be used world-wide without requiring a site radio operating license. Local regulations may restrict the maximum RF transmit power and manufacturers such as Deeter provide different variants of the Wireless System devices for the USA, Canadian and European markets to satisfy these constraints. The IEEE 802.15.4 protocol, as used in the Deeter Wireless Sensor System, allows several networks to share the same frequency without interfering with each other. The protocol uses sophisticated techniques to ensure good communications using very low power signaling. Once the system is installed it will operate reliably for extended periods without any further intervention.

 

Wireless Range

At maximum transmission power, depending on country of use, the distance between sensor node and base station may be up to 4km in an ideal, open field installation. For operation in Europe, regulations restrict the maximum transmission power and a range of up to 1000m may be possible. However, in most practical environments the radio signal will be attenuated by obstructions and by multi-path fading caused by reflections. To improve range, a clearer signal path can often be achieved by increasing the height of the antenna.

 

Cost and applications

With the cost of a simple single wireless sensor and base station system being less than £500 it’s easy to see what an attractive proposition a wireless solution can be. Simple plug-and-play installation, ease of relocation, removal of costly and hazardous cabling make a wireless sensor system a welcome solution for control engineers in industrial and manufacturing industries such as food and beverages, cooling systems and agriculture.

 

The Deeter Group has been providing electronic services to industry since 1982. With the formation of Deeter Electronics in 1991 the company manufactures its wireless sensor system in the UK and is a major international supplier of control and instrumentation systems, including electronic sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies and other products and services to manufacturing industry.

 

Contact:

The Deeter Group
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Deeter Group Wireless Sensor System

Background

The Deeter Group has been providing electronic services to industry since 1982. With the formation of Deeter Electronics in 1991 the company has become a major international manufacturer and supplier of control and instrumentation systems, including electronic sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies and other products and services to manufacturing industry.

 

A perennial problem with installing control and measurement systems in industrial environments is cabling. Installing and maintaining the reliable operation of cable networks can be very difficult in factories and larger industrial facilities where buildings may be remote. Roads, railways and even rivers may need to be crossed creating their own sets of health and safety hazards. Cable faults can easily be caused by mechanical damage and the environment resulting in costly lost production and safety issues which could result in life hazard, damage to process equipment and unnecessary plant shut-down.

 

The recent advent of compact, high reliability short range wireless devices has allowed Deeter to develop a wireless sensor system which can transform industrial control and measuring systems. Greatly reducing the cost and time required to install, increasing convenience and reliability and enabling simple relocation of sensors should factory layout change. In addition Deeter probes are battery powered removing the additional layer of installation complexity of providing mains power in remote locations for conventional measuring instruments.

 

.A Deeter Wireless Sensor System may include a number of Wireless Routers to form a wireless ‘mesh’ network. This allows signals to be automatically re-routed around any broken links in the mesh creating a built-in self-healing capability to further ensure communications reliability.

 

The Deeter Wireless Sensor System will be welcomed by control engineers in industrial and manufacturing industries such as food and beverages, cooling systems and agriculture.

 

System Applications and Features

The Deeter Wireless Sensor System was primarily designed for use in liquid level sensing, to complement the very popular existing range of Deeter float-switches and continuous level sensors. Countless other applications for the Deeter Wireless Sensor system are possible, including:

• remote monitoring of switch inputs to drive relay outputs

• converting a potentiometer input to a 4-to-20mA current loop output

• mirroring a 4-to-20mA current loop signal

• switching relays at preset input thresholds

 

The System has the following advanced features:

• Sophisticated RF Communications and Wireless Network capability

• Fully automatic operation once the system is installed

• Battery powered remote sensors

 

RF Communications

The system uses very reliable high power RF transceiver modules and rugged external antennae to achieve the best possible wireless communication range. Range can be further extended by adding one or more Deeter Wireless Routers which receive and re-transmit the signal with increased gain. The Base Station acts as the coordinator for the wireless network and operates in the 2.4GHz ISM (Instrumentation Scientific and Medical) frequency band. This allows the system to be used world-wide without requiring a site radio operating license. Local regulations may restrict the maximum RF transmit power and Deeter provide different variants of the Wireless System devices for the USA, Canadian and European markets to satisfy these constraints. The IEEE 802.15.4 protocol used in the Deeter Wireless Sensor System allows several networks to share the same frequency without interfering with each other. The protocol uses sophisticated techniques to ensure good communications using very low power signaling. This allows the Deeter Wireless Sender or LVCS-RF (RF Liquid Vertical Continuous Sensor) probe to operate using battery power. Once the system is installed it will operate reliably for extended periods without any further intervention. When several Routers are used they form a ‘mesh’ network, and signals can be re-routed around any broken links in the mesh. Thus, the system has a built-in self-healing capability to further ensure communications reliability.

 

Wireless Range

At maximum transmission power (USA version) the distance between sensor node and Base Station may be up to 4km in an ideal, open field installation. For operation in Europe, regulations restrict the maximum transmission power and a range of up to 1000m may be possible. However, in most practical environments the radio signal will be attenuated by obstructions and by multi-path fading caused by reflections. To improve range, a clearer signal path can often be achieved by increasing the height of the antenna and Deeter supply an antenna extension kit for this purpose. A Deeter Wireless Router placed somewhere between the remote sensor and Base Station, or off to one side of the direct line between the two, will greatly extend the wireless range and up to four Routers may be used in a single system.

 

System Devices

There are four devices currently in the Deeter Wireless Sensor product range:

• Base Station

• Wireless Sender

• LVCS-RF Liquid Vertical Continuous Sensor probe

• Wireless Router

 

A basic Wireless Sensor System comprises a Base Station and a single sensor node, either a Sender or LVCS-RF. A Router may be added to the system to improve communications reliability or to extend the wireless range. Up to four Routers may be used in a single system.

The sensor nodes can accept a range of input devices to suit the application:

• Four switch inputs (Sender only)

• An analog resistive input (Sender and LVCS-RF)

• A 4-to-20mA current-loop sensing input (Sender only)

 

The Base Station has a range of outputs to drive a wide variety of possible

devices:

• Four open-collector transistors for relay operation etc.

• 4-to-20mA current loop driver

• Serial communications output via RS232, RS485 or USB

(At present, serial communications is reserved for diagnostic data. Future

developments are expected to include data-logging features.)

 

The complete Deeter Group product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems. For more information on the Deeter Group range of wireless sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe and the USA. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

 

 

Contact:

The Deeter Group
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

Press Release

Rugged Battery Powered Wireless Level Sensor

Base Station with 4-to-20mA Current Loop output

2.4 GHz Frequency band High Power Radio Transceiver

Simple and reliable operation

  

May 2010The Deeter Group; a market leading international company in the design, development and manufacture of electronic sensors and control systems, announces the launch of its ground breaking Wireless Sensor System for industrial measurement and control.

 

At the center of the Deeter Wireless Sensor System is the simple-to-use Base Station designed to receive data from remote wireless devices such as the Deeter Liquid Vertical Sensor (LVCS-RF). The base station converts remote sensor input signals into industry standard process outputs. The Base Station acts as the coordinator for an IEEE 802.15.4 wireless sensor network. It operates on one of 16 radio frequency channels available in the 2.4GHz ISM band. The high power transceiver can achieve a range of greater than 1km, subject to local environmental factors. The internationally recognized IEEE 802.15.4 protocol allows several wireless sensor networks to share the same wireless spectrum without interference.

 

The Base Station provides four open-collector transistor outputs which may be used to drive external relays for pumps and alarms or Deeter’s Dual Level Controller. Continuous analog sensor data such as liquid level is output using a 4-to-20mA current-loop driver which enables interfacing with industrial process controllers or the Deeter Group’s range of Current Loop Indicators. A serial communications channel provides full-duplex RS232 and half-duplex RS485 transceivers allowing software to be developed for linking to PCs, data-loggers, PLCs or other proprietary equipment.

 

The Base Station has three internal push-button switches and a 2-line by 16-character LCD. The buttons are accessible with the lid removed and are used in conjunction with the display to select installation options during initial setup. Once the system has been installed it will continue to operate without any further need for user intervention. The Base Station is housed in a rugged ABS enclosure with an external antenna. It has cable glands for power input and signal outputs and is supplied with an external, wall mounted, universal AC input power supply.

 

Deeter is launching the wireless Base Station with the Liquid Vertical Continuous Sensor – Radio Frequency (LVCS-RF) wireless sensor. The LVCS-RF is designed to measure a continuous liquid level and transmit this information by radio to a Deeter Wireless Base Station at regular intervals. The device is battery powered and transmits wireless sensor data using the IEEE802.15.4 protocol operating in the 2.4GHz frequency band. The  transmission range is up to 1Km in ideal line-of-sight conditions. The operating temperature range is -20 to +70ºC.

 

The LVCS-RF circuitry is housed in an IP65 rated die-cast Aluminium head with an external antenna. An optional 3m extension lead and bracket are available for mounting the antenna in a position more favorable to wireless communication should the need arise. The sensor circuit is fitted inside a Food Industry Standard 316L stainless steel tube attached to the head, with a 55mm magnetic ball-float. Standard sensing lengths are 250mm, 500mm, 750mm and 1m. Custom lengths and materials are available on request. The LVCS-RF is powered by a single 3.6V Lithium Thionyl Chloride battery with a life typically of 9 months (based on a transmission interval of 10 seconds and an uninterrupted wireless link to the base station).

 

Peter Whiteaker, Managing Director of The Deeter Group, comments;”Over the past 20 years the Deeter Group has justly earned its reputation as a supplier of quality products and services. The introduction of our new British designed and manufactured wireless sensor systems takes us into a new and growing market sector. Our wireless base station and LVCS-RF sensors can be integrated into our customers systems or we can provide a complete measurement package by simply adding a Deeter Current Loop Indicator”

 

The Deeter Group product range includes level sensors, industrial weighing equipment, reed and proximity switches, security switches, termination assemblies, litz and magnetic wire and solar power systems. For more information on the Deeter Group range of wireless sensing products call +44 (0)1494 566046 or visit www.deeter.co.uk

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

 

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. Deeter Electronics now designs and manufactures sensor and wireless products in the UK and is a distributor for a number of market leading component Brands. Deeter provides a wide range of instrumentation products to customers in the UK, mainland Europe and the USA.

 

 

Contact:

The Deeter Electronics Ltd.
Deeter House
Valley Road
Hughenden Valley
HP14 4LW

T: +44 (0)1494 566046
F: +44 (0)1494 563961

E: [email protected]

W: www.deeter.co.uk

 

The Deeter Group, market leaders in the design, development and manufacture of electronic sensors and control systems, announce the introduction of their new Low Volume Liquid Dispenser.  Intended for accurate, repeatable dosing of small volumes of chemicals, colors or flavorings, the Low Volume Liquid Dispenser may be used to control any liquid being dispensed in a laboratory or manufacturing process.

The new Deeter Low Volume Liquid Dispenser is designed to deliver a measured volume of liquid at the press of a button.  In normal use, the operator selects a volume, presses a button and the Dispenser delivers the required volume without further operator intervention.  The volume required is simple to set and the dose is retained in non-volatile memory for repeat operations. Volumes between 0.025 liters and 10 liters can be selected in increments of 0.001 liters.

The Dispenser will accurately measure volumes over a flow rate range of between 0.2 liters/minute and 2.5 liters/minute and will automatically compensate for the effects of varying flow-rates and changes in liquid temperature.  A calibration menu allows fine adjustments to the compensation.

The Low Volume Liquid Dispenser has two John Guest Speedfit® 8mm push-fit connectors for input and output of fluids.  Wetted surfaces are nylon, PTFE, Buna and acetyl, making the Low Volume Liquid Dispenser suitable for a wide range of fluids over a temperature range of +1 to +65ºC.  Operator controls consist of a three-button keypad and a liquid crystal display.  The display shows the selected volume and progress during dispensing.  A number of additional features are available through the keypad, including pause and restart during dispensing, cancelling dispensing, and manual ‘top-up’ control.

Craig Harnish, Vice President of Sales at Deeter Electronics Inc. comments; ”We have over twenty years of experience in designing fluid dispensers and our new Low Volume Liquid Dispenser will be ideal for single users in laboratories to automated systems for low volume dosing.  This new design features temperature controlled accuracy and the convenience of having software provided for control and monitoring from a PC.”

The Dispenser has a serial communication option to enable automated control and monitoring by an external computer using the software provided.  Communication is via USB ‘A to B’ cable and the Low Volume Liquid Dispenser is powered by a low-voltage supply, making it safe to use in damp environments or if liquid is spilt.  A 12VDC mains socket adapter is supplied with each Dispenser.

An audible ‘beep’ option is provided to indicate when dispensing has stopped and a further option will produce continuous ‘beeps’ if the flow rate is outside of  the limits for accurate volume measurement.  These audio options can be enabled or disabled through a display menu and are also saved to non-volatile memory and are restored to the operator’s preference after power-up.

The Deeter Group product range includes level sensors, complete wireless sensing systems, leak detectors, level indicators and control equipment, industrial weighing equipment, reed and proximity switches, boiler control equipment, litz and magnetic wire and termination assemblies. For further details on the Deeter Low Volume Liquid Dispenser call 001 330 630 3510, email [email protected] or visit www.deeterelectronicsinc.com

About Deeter Group:

The Deeter Group is a privately owned group of companies first established in the UK in 1982 and set up to provide electronic services and products to industry. The Group comprises Deeter Engineering Services Ltd, Deeter Weighing Systems, Deeter Electronics Ltd, Deeter Electronics Inc. and Deeter International Ltd. During its existence it has developed from a small local supplier to a Group of companies which trade throughout the world. Deeter now lists among its customers many large international companies and has justly earned its reputation as a supplier of quality products and services.

Deeter Electronics was established in 1991 as a distributor of specialist electronic products. It now supplies a range of products to customers in the UK, mainland Europe, Asia and North and South America. In addition to some sensor products manufactured within the Deeter Group, Deeter Electronics is now either an agent or distributor for a number of market leading component Brands.

For more information

DEETER ELECTRONICS INC

466 Commerce Street,

Tallmadge,

OHIO, 44278

Tel: 001 330 630 3510

Fax: 001 330 630 3512

E: [email protected]

W: www.deeterelectronicsinc.com