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Vehicle Loop Detector

PT-CJ Series — Single & Dual Channel

Vehicle Loop Detector

Overview

Multi-channel inductive loop vehicle detectors with ≥99.9% detection accuracy. Available in single-channel (PT-CJ102) and dual-channel (PT-CJ202/203) configurations. Features adjustable sensitivity (10 levels), selectable frequency (8–100KHz), and built-in lightning protection (gas discharge tube + zener clamping).

Key Features

  • ≥99.9% detection accuracy
  • 10-level adjustable sensitivity
  • Single & dual channel options
  • Frequency: 8–100KHz adjustable
  • Gas discharge + zener lightning protection
  • Pulse or level output modes
  • Auto sensitivity boost (switchable)
  • Dual-color LED status per channel

Technical Specifications

ParameterPT-CJ102 (1ch)PT-CJ202 (2ch)PT-CJ203 (2ch)
Frequency8–100KHz, 8-step10–99KHz, 4-step10–99KHz, 4-step
Coil Inductance20–2500µH20–2500µH20–2500µH
Sensitivity10 levels10 levels (rotary)10 levels (rotary)
Accuracy≥99.9%≥99.9%≥99.9%
Response Time40–160ms, 2-step40–160ms, 2-step40–160ms, 2-step
Pulse Duration~150ms (or 250ms)~150ms (or 250ms)~150ms (or 250ms)
Output2 independent relays2 independent relays3 independent relays
Max Feeder300m (<100m rec.)300m (<100m rec.)300m (<100m rec.)
Lightning ProtectionGas discharge + zenerGas discharge + zenerGas discharge + zener
Dimensions54×90×135mm54×90×135mm54×90×135mm
Temp / Protection-20°C~+60°C, IP40-20°C~+60°C, IP40-20°C~+60°C, IP40
Humidity≤98%≤98%≤98%

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