Gas Detection (Australia) Pty Ltd
GTD 2000 Ex Operating Manual
Page 8 of 26
M-GTD2000Ex-01-01
4.3 AMP PCB
Amplifies the tiny signal of sensor to transmit DC 4-20mA signal, It also sends signal data
to LCD display.
4.4 Display Parts
Converts analogue signal from AMP/Terminal (Transmitter) PCB to digital signal and feed
the converted signal to LCD. It also lights power lamp to indicate current power status.
4.5 Power/mA Terminal
CN1 is composed of connection terminal for DC 21-27V power (+, -, ET) and for 4-20mA
signal. (mA, -).
4.6 Sensor Terminal
CN2 is connection terminal for sensor. (Red, White, Green and Blue)
4.7 Power LED
When the power is supplied, the lamp will turns on.
4.8 Function switch
- When setting parameter, the detector goes into program mode by touching this switch
with magnet bar for over 2 seconds. (Program mode, Calibration mode, Maintenance mode,
Test mode)
- Also, This switch is used for data input.
4.9 Reset switch
In order to go back to previous mode or cancel current action during setting parameters,
touch this switch with magnet bar once. (Every touch will make the detector go back to
previous mode)
Gas Detection for
Defence
