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  • Boxed Detector CH1 - TD136
  • Boxed Detector CH1 - TD136

TD136 (CH1 Boxed Detector)

R1,711.74 excl. tax
Product Part Number:
250.00 Grams
Calculated at checkout

Please contact us if you wish to purchase more than 9 of a particular item – one of our sales team will contact you for our special 10+ pricing.

Product Description

Single Channel Detectors

The innovative TD136 series of single channel inductive loop vehicle detectors are used to detect vehicles presence by means of an inductive loop buried under the road and have all the features and benefits found on much larger modules. No longer is it necessary to make compromises when selecting a detector for Traffic control, counting or traffic analysis - these "one-chip" microprocessor-based units are suitable for them all. Available in standard & custom variations these detectors can cater to your every system requirement.


  • Traffic Control Applications
  • Vehicle Counting
  • Toll Systems
  • Traffic Analysis


  • Compact Size: This compact and well engineered housing combines all of the industry requirements regarding features and functionality and allows this detector to be incorporated into any new or existing traffic detection system.
  • Diagnostic Capabilities: Comprehensive diagnostics capabilities allow for accurate diagnosis of loop and installation problems.
  • Selectable Presence: The output of the presence relay can be selected to maintain an output for an extension period, or defined presence output times.
  • Loop Isolation Protection: The loop is isolated and provides protection against lightning and transient damage and allows for operation with single point to ground sensor loops. Added filtering reduces interference from external noise. 
  • Loop Frequency Indication: Interference between adjacent loop / detectors can be determined by an integral indication, and eliminated by changing the frequency settings.
  • Environmental Analyser: Continuous monitoring of external parameters ensure reliable product performance & operations under all environmental and power supply conditions.
  • Delay on Detect: Provides a turn-on delay, thus allowing selective detection which is often useful for screening out unwanted inputs.
  • Visual Fault Monitor: A fault indication is provided in the event of the loop input becoming faulty, or alternatively if the loop is out of the operational range. This feature will help in localising the fault in the event of a maintenance call-out. 

Using The TD136 Detector as a Traffic Counter


TD136 Typical Wiring Configuration for Standard Models - May Vary According to Special Requirements.



Live                                    230V AC  /  12-24V AC/DC options




Fault Relay N/O Contact


Fault Relay Common  Contact


Presence Relay N/O Contact


Presence Relay Common Contact


Loop                                   Twist this pair


Loop                                   Twist this pair




Presence Relay N/C Contact


Fault Relay N/C Contact

Technical Data

Download Specification:
Self-Tuning Range:
20 – 1500 µH
Four step adjustable on faceplate:
  • High - 0.02% ∆ L/L
  • Med-High - 0.05% ∆ L/L
  • Med-Low - 0.1% ∆ L/L
  • Low - 0.5% ∆ L/L
Four step adjustable on faceplate:
12-80kHz (Frequency determined by loop geometry)

Output Configuration:
2 output relays:
  • Relay 1 = Presence output (Fail-Safe)
  • Relay 2 = Fault output (Fail-Safe)
Presence Time:
Four step adjustable on faceplate:
  • 1 sec
  • 4 mins
  • 40 mins
  • No fixed time out (No fixed timeout dependant on inductance change: approx. 1 hour for 3% ∆ L/L)
Delay Time:
Four step adjustable on faceplate:
  • 0 secs
  • 10 secs
  • 20 secs
  • 30 secs
The following are provided:
Red LED - Diagnostic
Green LED - Channel indicator
  • Tuning - on steady,then flashed freq count (x10kHz)
  • Undetect - off
  • Detect - on steady
  • Fault - on with short off periods
Loop isolation transformer, zener diode clamping on loop inputs and gas discharge tube protection.
Power Requirements:
230V AC ±10% (48 - 62Hz)
12-24V AC/DC ±10% (48 - 62Hz)
Requirement: 1.5 VA Maximum @ 230 V
Output Relays:
Presence Relay - 5A @ 230V AC
Change-over contact (Fail-Safe)
Fault Relay - 5A @ 230V AC
Change-over contact (Fail-Safe)
Operating Temp Range:
-20°C to +70°C (Circuit sealed against condensation)
High heat ABS blend
78mm (high) x 41mm (wide) x 80mm (deep)
Mounting Position:
Shelf or DIN-rail socket
Single rear mount 11-pin submangnal (86CP11)
Option - 1 metre flying lead
Pulse Output:
Static Response Times:

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