Part Number: 65-1080R-xxx (xxx denotes gas)
D-Guard²R
List of Benefits
- Built in relay board
- 2 Wire connection
- HART 7.0 communications
- Leading edge NDIR methane detection
- 5 year, O2 sensors
- Wide range of toxic gases monitored
- Ultra - Clear high resolution display
- Display illumination
- Full sensor temperature compensation
- Integrated dynamic response testing
- Timed/HART triggered sensor self-test
- Continuous operating condition monitoring
- Non-intrusive setup and calibration
- Guided intuitive user interface
- Detector isolate feature
- High impact anti-static housing IP66 and IP67/IP68 certified
D-Guard²R comes standard with a built in relay board. This includes 3 relays; 2 for the low and high alarms set within the transmitter and a third for fault. This allows for a reduced system install and running cost by avoiding having to run additional wiring between other relay boards. Oxygen monitoring applications now benefit from the optional use of next-generation 5 year life oxygen sensors, giving excellent dependability and further reducing system ownership costs.
Inclusion of HART communications enables access to a greater depth of information than is possible over a basic current loop signal. Real time gas readings, diagnostic information and sensor testing are available via the HART link. Remote current loop rescaling and test mode triggering is also possible via the HART link. An optional HART communications port can be fitted to the side of the unit for less intrusive HART access.
D-Guard²R includes a high resolution ultra low power display with super clear text and graphics. The display offers visibility in low light spaces right through to use in direct sunlight. The user interface is intuitive and provides on screen guidance for carrying out calibration and configuration tasks. Sensor temperature compensation results in long term stability, accuracy and reliability. D-Guard²R continually monitors the sensor temperature and applies corrections to both the zero operating point and the response to gas, allowing the detector to remain steady under zero gas conditions and accurate when measuring gas concentration.
Response time testing functionality is integral to D-Guard²R to give a true measurement of dynamic gas monitoring performance. As standards begin to emerge requiring such testing to be carried out, D-Guard² is equipped to make the task simple. D-Guard²R has been designed to efficiently allow the use of a single board to cover all detector types and ranges for toxic gases, oxygen, flammable gases and carbon dioxide. Configuration is simple and quick via the user interface and supplied service tool with magnetic stylus built in. D-Guard²R is housed in a specialised highly impact resistant non-conductive plastic, static preventing enclosure, which is UV stable. Ingress protection includes IP66 and IP67/IP68.
| Specification | Detail Description |
|---|---|
| Typical range of Gases Detected | |
| Ammonia (NH3) | 0 to 100 ppm in 1 ppm increments |
| Carbon Monoxide (CO) | 0 to 100 ppm in 1 ppm increments |
| Carbon Dioxide (CO2) | 0-1.5% v/v in 0.01% Vol increments |
| Chlorine (CL2) | 0 to 10 ppm in 0.1 ppm increments |
| Ethylene Oxide (ETO) | 0 to 20 ppm in 0.1 ppm increments |
| Hydrogen Cyanide (HCN) | 0 to 50 ppm in 1 ppm increments |
| Hydrogen Sulfide (H2S) | 0 to 200 ppm in 1 ppm increments |
| Hydrogen Chloride (HCL) | 0 to 200 ppm in 1 ppm increments |
| Methane (CH4) | 0-5% v/v /100% v/v in 0.01% or 1% increments |
| Methane (CH4) | 0-100% LEL in 1% increments |
| Nitric Oxide (NO) | 0 to 100 ppm in 1 ppm increments |
| Nitrogen Dioxide (NO2) | 0 to 10 ppm in 0.1 ppm increments |
| Oxygen (O2) | 0 to 25% in 0.1 %Vol increments |
| Ozone (O3) | 0 to 2 ppm in 0.01 ppm increments |
| Phosphine (PH3) | 0 to 1 ppm in 0.01 ppm increments |
| Sulfur Dioxide (SO2) | 0 to 10 ppm in 0.1 ppm increments |
| Other gases and ranges | Are available on request |
| Specifications | |
| Analogue output | Two wire 4-20mA |
| Digital Communication | HART 7.0 over two-wire loop |
| Indication | 400 x 240 pixel Graphical Back Light LCD display |
| Relay Output 1 | Low Alarm - Single Pole Double Throw (SPDT) |
| Relay Output 2 | High Alarm - Single Pole Double Throw (SPDT) |
| Relay Output 3 | Fault - Normally Energised |
| Input Power | 10-30VDC |
| Response Time | Typical response T90 in less than 40 sec (Toxic) and less than 10 sec (CH4), cell dependant |
| Operating Temperature | -20.C to +70.C (-20.C to +55.C NDIR Version and all other variants) |
| Humidity Range | 15-90% non-condensing |
| Accuracy / Repeatability | Less than AS2290.3, ANZ60079.29 and AS4641 |
| Sensor Style | 4 series sized plug in sensors |
| Calibration | Non-intrusive, magnetic stylus |
| Drift | Less than 3% signal loss per 12 months |
| Dimensions | 120mm x 120mm x 95mm |
| Enclosure | Anti-static / UV stable chemical resistant Delrin |
| Gland | 20mm nylon (IP68 Rated) |
| IP Rating | IP66 and IP67 (1m for 30min) IP68 (1.2m for 1.5 hrs) |
| Warranty | 2 Years on Instrument |
| Sensor warranty | varies with cell |
D-Guard2r datasheet.pdf 341.23 KB
Manual - Current versions
201025-D-Guard²R Instruction manual firmware 2.xx rev 2.pdf 4.67 MB
201017 D-Guard² non certified firmware 2.xx rev 5.pdf 1.12 MB
Manual - Superseded versions
GasTech D-Guard2 Non Certified Gas Detector User Manual_0.pdf 4.4 MB