RKI GD-70D Sample Draw Gas Sensor – Transmitter
Sample Draw Gas Detector
Features
- Monitor combustibles, O2, and a wide range of toxics
- Monitor vaporized hydrogen peroxide (VHP) fumigation and disinfection
- Plug and play smart sensors retain calibration and sensor data
- Common platform (Main unit / Sensor / Pump) for all detection methods
- Universal main unit (all sensor types)
- Multifunctional sensor unit (New Intelligent sensor)
- No internal tubing (main unit) / No coil (pump)
- Front access, no tool required, easy sensor and pump replacement
- Large size LCD screen
- Various communication methods available (4-20mA, NT and PoE)
- Minimal maintenance cost through enhanced troubleshooting firmware functions
- Small mounting space
- Environmentally friendly
- Wide variety of sensors available
GD-70D Datasheet [PDF]
GD-70D (IRU) N2O [PDF]
GD-70D Operator’s Manual [PDF]
GD-70D Pyrolyzer Manual [PDF]
The new Model GD-70D smart gas detection transmitter 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 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 sensors also retain calibration information, which means they can be conveniently calibrated separate from the transmitter, avoiding transport of calibration gases to the field location. The GD-70D firmware automatically corrects for long-term zero and span “drift” minimizing maintenance and maximizing reliability.
Vaporized hydrogen peroxide gas detection (VHP) in fumigation disinfection of medical facilities, pharmaceutical environments, including cleanrooms, production filling lines, and chemical fogging for the food industry.
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-color 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.
Related Services
- Design, Consultations, and Engineering
- Installation
- Start-up
- Training
- System Maintenance
Gases
| Toxic Gases | Detection Range | AGIH/TLV-TWA | Part Number |
| Ammonia NH3 | 75 ppm | 25 ppm | GD-70DEA-NH3 |
| Arsine AsH3 | 0.2 ppm | 5 ppb | GD-70DEA-ASH3 |
| Boron Trichloride BCl3 | 15 ppm | (C) 0.7 ppm | GD-70DEA-HCL (*) |
| Boron Trifluoride BF3 | 9 ppm | 0.1 ppm | GD-70DEA-HF (*) |
| Bromine BR2 | 1 ppm | 0.1 ppm | GD-70DEA-BR2 |
| Carbon Monoxide CO | 75 ppm (ESU-23) | 25 ppm | GD-70DEA-CO-02 |
| Carbon Monoxide CO | 75 ppm (ESU-231) | 25 ppm | GD-70DEA-CO-12 |
| Carbon Monoxide CO | 75 ppm (ESU-23) | 25 ppm | GD-70DEA-CO-01 |
| Carbon Monoxide CO | 75 ppm (ESU-231) | 25 ppm | GD-70DEA-CO-11 |
| Carbon Monoxide CO | 75 ppm (ESU-23) | 25 ppm | GD-70DEA-CO-03 |
| Carbon Monoxide CO | 75 ppm (ESU-231) | 25 ppm | GD-70DEA-CO-13 |
| Chlorine Cl2 | 3 ppm
1.5 ppm ⁕ |
0.5 ppm | GD-70DEA-Cl2 |
| Chlorine Trifluoride ClF3 | 0.6 ppm | (C) 0.1 ppm | GD-70DEA-ClF3-A |
| Diborane B2H6 | 0.3 ppm | 0.1 ppm | GD-70DEA-B2H6 |
| Dichlorosilane DCS | 15 ppm | GD-70DEA-DCS | |
| Diethylamine (CH3CH2)2NH | 15 ppm | 5 ppm | GD-70DEA-DEA |
| Dimethylamine (CH3)2NH | 15 ppm | 5 ppm | GD-70DEA-DMA |
| Disilane Si2H6 | 15 ppm | (C) 2 ppm | GD-70DEA-Si2H6 |
| Fluorine F2 | 3 ppm | 1 ppm | GD-70DEA-F2 |
| Germane GeH4 | 0.8 ppm | (C) 2 ppm | GD-70DEA-GeH4 |
| Hydrogen Bromide HBr | 6 ppm,
9 ppm ⁕ |
(C) 2 ppm | GD-70DEA-HBR-06/-09 |
| Hydrogen Chloride HCI | 6 ppm,
15 ppm ⁕ |
(C) 2 ppm | GD-70DEA-HCL-06E/15E |
| Hydrogen Cyanide HCN | 15 ppm | GD-70DEA-HCN | |
| Hydrogen Fluoride HF | 9 ppm | 0.5 ppm | GD-70DEA-HF-09 |
| Hydrogen Peroxide H2O2 | 3 ppm | 1 ppm | GD-70DEA-H2O2 |
| Hydrogen Selenide H2Se | 0.2 ppm | 0.05 ppm | GD-70DEA-H2Se |
| Hydrogen Sulfide H2S | 1 ppm
30 ppm
|
1 ppm | GD-70DEA-H2S-01/-30 |
| Nitric Oxide NO | 100 ppm | 25 ppm | GD-70DEA-NO |
| Nitrogen Dioxide NO2 | 9 ppm
15 ppm |
3 ppm | GD-70DEA-NO2-09/-15 |
| Nitrogen Tetraoxide N2O4 | 15 ppm | GD-70DEA-N2O4 | |
| Ozone O3 | 0.6 ppm | 0.1 ppm | GD-70DEA-O3 |
| Phosphine PH3 | 1 ppm (ESU-23AH) | 0.3 ppm | GD-70DEA-PH3-AH |
| Phosphine PH3 | 1 ppm (ESU-23DH) | 0.3 ppm | GD-70DEA-PH3-DH |
| Silane SiH4 | 15 ppm (ESU-23AH) | 5 ppm | GD-70DEA-SiH4
-AH |
| Silane SiH4 | 15 ppm (ESU-23DH) | 5 ppm | GD-70DEA-SiH4
-DH |
| Silicon Tetrachloride SlCl4 | 15 ppm | GD-70DEA-SiCl4 | |
| Silicon Tetrafluoride SiF4 | 9 ppm | GD-70DEA-SiF4 | |
| Sulfur Dioxide SO2 | 6 ppm | — | GD-70DEA-SO2 |
| Sulfur Tetrafluoride SF4 | 9 ppm | GD-70DEA-SF4 | |
| Tetraethyl Orthosilicate TEOS | 15 ppm | GD-70DEA-TEOS | |
| Ttrichlorosilane TCS | 15 ppm | GD-70DEA-TCS | |
| Trimethylamine (CH3)3N | 15 ppm | 5 ppm | GD-70DEA-TMA |
| Tungsten Hexafluoride WF6 | 9 ppm | GD-70DEA-WF6 | |
| MOS Gases | Detection Range | ACGIH/TLV-TWA | Part Number |
| Dichlorethylene DCE | 600 ppm | GD-70DEA-MDCE | |
| Dichloromethane DME | 2,000 ppm | 50 ppm | GD-70DEA-MDCM |
| Hydrogen H2 | 500 ppm | — | GD-70DEA-MH2-S500 |
| Hydrogen H2 | 1,000 ppm | — | GD-70DEA-MH2-S1K |
| Hydrogen H2 | 2,000 ppm | — | GD-70DEA-MH2-S2K |
| Hydrogen H2 | 2% Vol. | — | GD-70DEA-MH2-20K |
| Isopropyl Alcohol CH3CHOHCH3 | 2,000 ppm | 200 ppm | GD-70DEA-MIPA-2K |
| Methane CH4 | 2,000 ppm | — | GD-70DEA-MCH4-2K |
| Methane CH4 | 5,000 ppm | — | GD-70DEA-MCH4-5K |
| Methane CH4 | 2% Vol. | — | GD-70DEA-MCH4-20K |
| Methanol CH3 | 1,000 ppm | GD-70DEA-MCH3OH-1 | |
| Methanol CH3 | 2,000 ppm | GD-70DEA-MCH3OH-2 | |
| Propane CH3H8 | 2,000 ppm | 1,000 ppm | GD-70DEA-MC3H8-2K |
| Propane CH3H8 | 5,000 ppm | 1,000 ppm | GD-70DEA-MC3H8-5K |
| Difluoromethane R-32 | 2,000 ppm | 1,000 ppm | GD-70DEA-MR32 |
| Fluoro Methane R-41 | 2,000 ppm | 1,000 ppm | GD-70DEA-MR41 |
| Catalytic LEL & O2 | Detection Range | LEL % Vol. Levels | |
| Hydrogen H2 | 100% LEL | — | GD-70DEA-LEL-H2 |
| Hydrogen H2 | 2% Vol. | — | GD-70DEA-H2-20K |
| Isobutane i-C4H10 | 100% LEL | — | GD-70DEA-ISOB |
| Methane CH4 | 100% LEL | — | GD-70DEA-LEL-CH4 |
| Methane CH4 | 2% Vol. | — | GD-70DEA-CH4-20K |
| Oxygen O2 | 25% Vol. | GD-70DEA-OXY-EC |
Specifications
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 |
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||
| 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 / Analog | ||
| 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) Note: Approx. 2.5W (Max 5W) with SGU sensor unit | PoE standard arrangement | |
| Dimensions | 2.8”W x 4.7”H x 5.9”D (70W x 120H x 150Dmm) | ||
| Weight | Approx. 0.9kg (2.0lbs), 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 | NCU |
| Detection Principle | Electro-chemical cell | Semi-conductor | Pyrolysis-particle | 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 | 0-100% 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) | |||
PYROLYSER UNIT
| Model | PLU-70 |
| Application | NF3 / TEOS gases detected in air |
| Usage | Used by connecting to “GD-70D” (Main unit) |
| Power Lamp |
|
| Self-diagnostic function |
|
| 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 | 2.8”W x 4.7”H x 5.9”D (70W x 120H x 150Dmm) |
| Weight | Approx. 1.2kg (2.6lbs) |
| 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) |
