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  • Card Detector CH4 - TD624ES

TD624ES (CH4 Card Detector)

R4,622.19 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

High Performance Traffic Detector

The TD624ES is a high performance 4-channel microprocessor based card detector complying to Eurocard standard.  Features incorporated on this detector make it an invaluable component in any ITS system.

The TD624ES Eurocard detector complies with TR0100A UK DoT for motorway use.  It is typically used in motorway incident detection and automated signally (MIDAS) applications.


  • Speed monitoring in motorway application
  • Determining vehicle headway
  • Calculation of lane occupancy
  • Accurate high-speed vehicle speed measurement

Features of the TD624ES

  • Optimised Response Time: Response times are optimized to facilitate the collection of accurate speed and length measurements.
  • Optimised Sensitivity: Sensitivity levels are adjustable for each channel.  These have been carefully chosen for traffic control applications allowing adjacent lane rejection and elimination of interference.
  • Adjustable Presence Time: A range of four presence times is available and, adjustable for each channel.  This facilitates operation in passage mode, limited presence or for queue detection.
  • Loop Fault Monitor: The TD624ES provides local and remote fault output indications on an individual channel basis, as required.
  • Sequential Polling: Scanning techniques are employed to positively eliminate crosstalk between loops connected to the same detector module.

Technical Data

Download Specification:
Self-Tuning Range:
20 - 1000μH
Four OR seven step adjustable on faceplate:
High – 0.03% ΔL/L to
Low – 0.5% ΔL/L

Four step selectable on PCB:
10-140 kHz (Frequency dependent on loop per channel)

Output Configuration:
One opto-isolated presence output per channel
Presence Time:
Four step adjustable on faceplate:
  • 3.5 secs
  • 4 mins
  • 35 mins
  • Limited by % ΔL/L Change
The following indications are provided:
2 x LED per channel
  • 1 x Red – Detect
  • 1 x Red – Fault

Loop isolation transformers, zener diode clamping on loop inputs and gas discharge tube protection.
Power Requirements:
24V DC + 20%, requirement 1.8VA (max) @ 24V DC
Detect outputs:

Operating Temp Range:
- 40 °C to + 80 °C (Circuit conformal coated)
160 mm (l) x 100 mm (h) x 25 mm (w)
2 x 32-way card edge – DIN 41612 Type B
Static Response Times:
Turn on 52mS + 2.4 mS
Turn off 52mS + 2.4 mS
Mechanical Details:
Standard Eurocard Format

Fault Outputs:
Common open collector operates indicating Loop short/open circuit conditions.
Output Opto-Couplers:
50mA @ 30V DC (Max)

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