The new model GD-70D smart gas detection transmitter/ toxic smart sensor series sets a new standard for performance, flexibility, and versatility. The GD-70D sample-draw transmitter offers an array of sensor technologies unmatched in the industry, including unique offerings, such as our hydrogen-specific or LEL versions.
The new Model GD-70D smart gas detection transmitter series sets a new standard for performance, flexibility, and versatility. The long life high capacity pump and wide variety of sensing elements are replaceable in a few seconds, with no tools required. The smart sensors retain all calibration and sensor-specific data in non-volatile memory, so sensors can be hot-swapped in the field with no programming required.
The GD-70D sample-draw transmitter offers an array of sensor technologies unmatched in the industry, including unique offerings, such as our hydrogen-specific or LEL versions.The sensors also retain calibration information, which means they can be conveniently calibrated separate from the transmitter, avoiding transport of calibration gases to field locations. The GD-70D firmware automatically corrects for long-term zero and span “drift” minimising maintenance and maximising reliability.
The GD-70D can be used as a stand-alone device, offering a number of communication protocols to existing PLC systems, or can be integrated with RKI’s Beacon series of single and multi-channel controllers. All GD-70D transmitters include a large, easy to read integral LCD display, tri-colour bar graph for visual notification of alarm status, programmable low and high alarm relays, and fault relay. Pump flow is self-tuning for maintenance-free operation. Because all GD-70D base units are identical, sensors can be interchanged with no programming or tools required, resulting in maximum flexibility to the user.
| 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) | ||||||
The new Model GD-70D smart gas detection transmitter series sets a new standard for performance, flexibility, and versatility. The long life high capacity pump and wide variety of sensing elements are replaceable in a few seconds, with no tools required. The smart sensors retain all calibration and sensor-specific data in non-volatile memory, so sensors can be hot-swapped in the field with no programming required.
The GD-70D sample-draw transmitter offers an array of sensor technologies unmatched in the industry, including unique offerings, such as our hydrogen-specific or LEL versions.The sensors also retain calibration information, which means they can be conveniently calibrated separate from the transmitter, avoiding transport of calibration gases to field locations. The GD-70D firmware automatically corrects for long-term zero and span “drift” minimising maintenance and maximising reliability.
The GD-70D can be used as a stand-alone device, offering a number of communication protocols to existing PLC systems, or can be integrated with RKI’s Beacon series of single and multi-channel controllers. All GD-70D transmitters include a large, easy to read integral LCD display, tri-colour bar graph for visual notification of alarm status, programmable low and high alarm relays, and fault relay. Pump flow is self-tuning for maintenance-free operation. Because all GD-70D base units are identical, sensors can be interchanged with no programming or tools required, resulting in maximum flexibility to the user.
| 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) | ||||||