MAIN UNIT |
Model |
GD-70D |
GD-70D-NT |
GD-70D-ET |
Communication |
4-20mA DC |
DC power line communication |
PoE method |
Detection principle |
Different type depending upon sensor unit and detectable gas (see table) |
Sampling method |
Sample drawing types (auto-adjustment of flow rate) 0.5 / min +/-10% |
Display |
• Large LCD display (white backlight) • Gas concentration |
Gas alarms |
Two alarm levels: 1st alarm – Red 2nd alarm – Red Fault alarm – Yellow |
External output |
1st, 2nd, and trouble alarms: Relay contact output for each alarm |
Self diagnostic function |
System failure, sensor failure, flow failure, communication error NT / ET / Analogue |
Datalogging |
Event history, alarm history, calibration history. Alarm trend (180 sec before / after 1st alarm) |
Operation temp./ humidity |
0 ~ 40ºC, 30 ~ 70% RH (non-condensing) |
Operating settings |
All operational settings are user adjustable through front panel |
Power requirements |
DC 24V+/- 10%, approx 1.5W (Max 4W including sensor unit) |
PoE standard arrangement |
Dimensions & Weight |
70mm W x 120mm H x 150mm D, approx 0.9kg, including sensor unit |
Mounting |
Wall-mounting base plate by 2 or 3 screws |
Sampling tubing |
4 x 6mm PTFE tubing recommended. Tube fittings provided as standard accessories |
Bushing |
Cable type varies depending on communication method (Cable bushing optional) |
SENSOR UNIT |
Model |
ESU |
SGU |
SSU |
OSU |
NCU |
Detection Principle |
Electrochemical cell |
Semiconductor |
Pyrolysis-particle |
Galvanic cell |
Catalytic combustion |
Gas detected and detection range |
Refer to list of detectable gases |
0-2000ppm H2, CH4, or
CH2F2 (R-32) in air and others |
0-15ppm TEOS in air |
0-25% O2 in air |
0-100% LEL H2,
CH4, and others |
Self diagnosis function |
Sensor trouble, system failure |
Date logging function |
Event history, alarm history, calibration history, Alarm trend (60 sec. before/after 1st alarm) |
PYROLYZER UNIT |
Model |
PLU-70 |
Application |
NF3 / TEOS gases detected in air |
Usage |
Used by connecting to “GD-70D” (Main unit) |
Power Lamp |
LED (Green colour) Normal: Light-on |
Self-diagnostic function |
Pyrolyser unit trouble Fan trouble System trouble |
Operating temp. /humidity |
0-40° C, 30-70% RH (non-condensing) |
Operational settings |
All operational settings are user adjustable through front panel |
Power requirements |
DC 24V+/- 10%, approx. 25W (max) |
Dimensions & Weight |
70mm W x 120mm H x 150mm D, Approx. 1.2kg |
Mounting |
Wall-mounting base plate by 2 or 3 screws |
Sampling |
4x6mm PTFE tubing recommended. Tube fittings provided as standard accessories |
Bushing |
1.25sq 2 core cable for power supply DC24V (Cable bushing optional) |