Self Contained Sensor

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  • Self Contained
  • Sensing Range 0″ to 40″
  • Operating Voltage 20 to 30 VDC
  • 200 Counts per Second Maximum
  • N.O. & N.C. Solid State Outputs
  • Signal Strength LED Indicator
  • Used as Thru-Beam or Reflective
  • Adjustable Delay
  • Adjustable Count Rate
  • Adjustable Sensitivity
  • Available in Valox Plastic or PVC
  • Short Circuit Protected

The TBT/TBR-600-40 is primarily a Thru-Beam sensor consisting of one transmit and one receive transducer, in separate and self contained housings. It can count up to 200 objects per second, as they pass through its ultrasonic beam, from 0 to 40 inches. The sensors can also be mounted in a Reflective position to detect targets. The Thru-Beam and Reflective mounting options provide the user with simple and accurate ways to detect the presence of various objects. An adjustable Delay control is added to vary the output re-sponse of the solid state relays to the time, or count rate, of a moving target. An adjustable Sensitivity control is added to provide highly accurate target detection. P1 on the receiver (TBR) is labeled sensitivity adjustment. The LED is pro-vided to show signal strength. The sensor is factory set with P1 fully clockwise (cw), making the LED solid red in color.

When P1 is fully counterclockwise (ccw), the LED will be solid green in color. After positioning the sensors at the required distance, a typical adjustment is performed by turning P1 ccw, causing the LED to change from a solid red to a mostly red condition. The unit is now properly adjusted. To achieve greater sensitivity for smaller targets, turn P1 ccw so that the LED will be more green in color. To make the sensors less susceptible to heavy dirt build up, turn P1 cw so that the LED will be brighter red in color.


Adjustable sensitivity is provided to accurately detect the distance of the target, by use of the P1 control potentiometer. To adjust, position the sensors in the desired locations. P1 should be fully counter clockwise, for the minimum sensitivity. In this position the LED will be in the green, or no detect state. Turn P1 slowly clock- wise until the LED changes in color to a red yellow combination, and remains stable. In this state the sensors will provide the best detec-tion of the desired target, and will not be affected by an adjacent target.


Adjustable delay is provided to vary the response of the solid state relay outputs, in relationship to time or the count rate of a moving target, by use of the P2 control potentiometer. P2 fully counter clockwise provides the fastest response time, and P2 fully clockwise provides the slowest response time. See the specification page under Response Time and/or Count Rate for more detail. The adjustment proceedure is performed simply by turning P2, counter clockwise (faster) or clockwise (slower), to respond appropriately to the speed of the targets moving past the sensors detection point.

Thru-Beam / Reflective

Figure A shows the transmit and receive sensors mounted for a Thru-Beam application. Figures B and C show the transmit and receive sensors mounted for a Reflective application. The TBT/ TBR-600-40 sensors can be used effectively for both sensing applications. The adjustment pro-ceedures for sensitivity, delay, and count rate, pertain to both the Thru-Beam and Reflective type of mounting or sensing applications.

Figure AFig. A

Figure BFig. B

Figure CFig. C


Detection using the TBT/TBR-600

Specifications: TBT/TBR-600
Operational Range: Adjustable 0″ to 40″
Power Input: 20 to 30 VDC
45 milliamps for TBT unit
20 milliamps for TBR unit
Power Input: 120 VAC
Ambient Temperature: 0° to 60°C or 32° to 140°F
Transducer Frequency: 180kHz
Minimum Target Size: Adjustable Sensitivity (use control P1)
maximum sensitivity (P1 full cw)
Can detect down to 1/8″ dia. Rod – Reflective
Can detect down to 1/16″ dia. Rod – Thru-Beam
Adjustable Delay (use control P2)
Response Time: ON: 2mS min (P2 full ccw) to 200mS max (P2 full cw)
OFF: 3mS min (P2 full ccw) to 200mS max (P2 full cw)
Count Rate: Adjustable (use control P2)
Minimum: 3 per second (P2 full cw)
Maximum: 200 per second (P2 full ccw)
Output: 2 Solid State Relays, 1 N.O.- 1 N.C., 2 to 130
Volts AC or DC, 100mA DC Continuous or
50mA AC Continuous, Short Circuit Protected
Housing Material: 2 Types, 420D Valox Plastic or PVC
Sealing: 420D Valox Plastic – NEMA 1
PVC – NEMA 1, 4, 6P, 12, and 13
Weight: 8 Ounces total per pair (4 Ounces each)

Mounting Consideration

The performance of this sensor can be influenced by direct metal contact.This zone is 12mm/.50″ measured from the sensor face. See Fig. G

Figures C, D, and E


Figure F, and G
  1. Beam Spread
  2. Beam Spread
  3. Wiring Diag for TBT
  4. QD Connector TBT
  5. Wiring Diag. for TBR
  6. QD Connector TBR
  7. Mounting Dimensions
TBT-600-40QD 0 – 40″ Transmitter with Quick Disconnect
TBR-600-40QD 0 – 40″ Receiver with Quick Disconnect
5000118-3 4 Pin, 6 Foot Cable for TBT-600-40QD – Sold Separately
5000118-6 4 Pin, 16 Foot Cable for TBT-600-40QD – Sold Separately
5000116-2 5 Pin, 6 Foot Cable for TBR-600-40QD – Sold Separately
5000116-4 5 Pin, 20 Foot Cable for TBR-600-40QD – Sold Separately