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  • Boxed Detector CH2 - TD236

TD236 (CH2 Boxed Detector)

R3,075.48 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

Dual Channel Detectors

The TD236 range of dual channel inductive loop vehicle detectors are manufactured in a popular miniature housing for DIN rail relay base mounting and shelf mounting. Available in unique variations, the TD236 range of detectors may be used in most applications.


  • Traffic Control
  • Vehicle Counting
  • Toll Systems
  • Direction Counting


  • Compact Size: Miniature housing that saves in newer compact equipment designs. The light-weight design makes it possible to plug the unit into a DIN rail compatible socket.
  • Flexibility: A front panel switch provides many user selected functions. Channel multiplexing eliminates crosstalk interference between the two loops connected to this detector, regardless of the proximity of the loops to each other. 
  • Selectable Presence: The output of the presence relay can be selected to maintain an output for an extended period, or defined presence output times
  • Visual Fault Monitor: 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.
  • Diagnostic Capabilities: This unit allows comprehensive diagnostics capabilities in conjunction with a separate DU100 hand held diagnostics readout. Advanced diagnostics features are covered by S.A PAT APPLN 93/5634

Using TD236 for Wrong-Way Control in a Motorway Ramp Applications


TD236 Typical Wiring Configuration for Standard Models - May Vary According to Special Requirements.


Technical Data

Download Specification:
Self-Tuning Range:
20 – 1000 µH
Four step selectable per channel:
  • 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:
1 x output relay per channel (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:

The following are provided:
Red LED – diagnostic
Individual green channel LEDs
  • Tuning - on
  • Undetect - off
  • Detect - on steady
  • Fault - on with short off pulse periods
Loop isolation transformer, zener diode clamping on loop inputs and gas discharge tube protection.
Power Requirements:
12-24V AC/DC ±10% (48 - 62Hz)
230V AC ±10% (48 - 62Hz)
Requirements - 1.5VA max @ 230V or 1.0VA max @ 12V
Output Relays:
Contact rating 5A @ 230V AC
1 x Normally Open (N/O) contact per channel (Fail-Safe)

Operating Temp Range:
-40°C to +70°C
78mm (high) x 41mm (wide) x 80mm (deep)
Mounting Position:
Shelf or DIN-rail socket
1 x 11 pin submagnal male (86CP11) – rear mount

Pulse Output:
Static Response Times:

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