Single Channel Gas Detector Receiver

Model : GTC-520A
Channel : 1
Comm. : 4-20mA, RS-485, Relay



  • Connectable with various types of gas detectors
  • Easy installation with a wall mount type
  • Gas concentration display with 4-digit & Bar-graph (32 segment, 3-color LED)
  • 3-color display according to alarm stages (Green, Yellow, Red)
  • 3-stage alarm, 1-trouble LED display and relay contact output
  • Easy configuration of monitoring system with RS-485 Modbus (isolated) serial communication (Option)
  • Programmable alarm setting (Level, Time delay)
  • Peak hold
  • Self diagnosis



Model GTC-520A
Operation display 6-LEDs (Power, 3-alarm, Trouble, Stand-by(점검))
Measuring display 4-Digit FND & Bar-Graph(32개 LED)
Measuring range 1~9999 (프로그램에 설정) / %LEL, ppm, % Vol
Alarm display 3-Alarm, Trouble LEDs 시각표시
부져(buzzer) 청각신호
Alarm output signal 3-Alarm, Trouble / AC250V/5A relay contact (SPDT)
Alarm level set 측정범위 내의 프로그램 설정
Input signal 4-20mA DC (2 wire or 3 wire)
Output signal 4-20mA DC
Isolated RS-485 Modbus(option)
Reset signal Reset 스위치 및 원격제어
Program set mode 경보 농도 및 형태 설정 (1, 2, 3 alarm)
경보 시간 설정 (즉시 & 지연(1~30 min))
경보 작동 범위 (Dead band)
측정값 보정 (SAD)
Relay 출력 on/off 설정
Operating temperature -20℃ ~ +50℃
Operating humidity 0 ~ 99%.RH (non-condensing)
Operating power AC 90V~250V / 3.6W
24V DC (option)
Dimensions 135 x 180 x 81(W X H X D)
Weight 0.6 kg