The TD136 has been designed using the most up-to-date technology in order to meet the requirements of a vast number of traffic applications in terms of operating conditions and functional options available to the user.
The primary function of the detector is to detect vehicle presence by means of an inductance change caused by the vehicle passing over a wire loop buried under the road surface.
The loop detector has been designed for ease of installation and convenience. Its modes of operation are selected by switches on the front of the unit. The switches also allow for different loop frequency settings and sensitivity settings.
The TD136 Enhanced Vehicle Detector provides visual output on the front of the enclosure and relay change-over contacts are connected at the rear.
The TD136 Enhanced Vehicle Detector is also provided with an integral fault relay, which will provide an output in the event of a loop fault condition.
|Self-tuning range:||20 to 1500 μH|
|Sensitivity:||Four step switch selectable
High 0.02% DL/L
Medium High 0.05% DL/L
Medium Low 0.10% DL/L
Low 0.50% DL/L
|Frequency:||Four step switch selectable 12-80Hz
(Frequency dependent on loop geometry)
|Relay Outputs:||Presence Relay
|Presence Relay:||Change-over (Fail-safe)|
|Presence Time:||Switch selectable:
1 Second, 4 Minutes, 40 Minutes,
No fixed time-out (limited presence)
(No fixed time-out dependant on inductance change - approx. 1 hour for 3% D L/L)
|Delay Time:||Switch selectable:
0 seconds, 10 seconds. 20 seconds, 30 seconds
|Fault Output:||Separate fault monitor output relay
Operates under the following conditions:
1. Loop open/short circuit
2. Detector/power fault
|Visual Indications:||1 X Power LED - Red
1 x Channel Status LED - Green
|Reset:||Reset by push button on front of enclosure|
|Surge protection:||Loop isolation transformer, gas discharge tubes, and Zener Diode clamping on loop input|
|Power requirements:||230 VAC +/-10 % (48 to 62 Hz)
120 VAC +/-10% (48 to 62 Hz)
12V to 24 V AC/DC +/- 10% (48 - 62Hz)
|Current draw:||1.5 VA Maximum @ 230 V|
|Relay Contact Rating:||5 A @ 230 VAC|
|Operating Temp:||-40°C to +70°C|
|Humidity:||Up to 95% relative humidity without condensation|
|Housing Material:||ABS blend|
|Mounting Position:||Shelf or DIN rail mounting|