True volume % readout over a wide range of pressures (pressure compensated).
Easier Gas Monitor set up using on-screen menus.
Graphical display of historic readings possible over a user-defined period.
Relay and fault outputs for control of external devices.
The Guardian NG Infrared Gas Monitor supplied by Edinburgh Sensors offers near-analyser quality, continuous sampling, measurement and display of target gas concentrations.
The ‘Guardian NG’ gas monitor provides high accuracy detection and measurement of either CO2 or CH4 gases, where detection level ranges of between 0 – 3000ppm and 0 – 100% by volume are required. The equipment is used for single gas measurement at a time.
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| Model | CO2 | CH4 | CO |
|---|---|---|---|
| Guardian NG | 0-3000 ppm | - | - |
| Guardian NG | 0-1% | - | - |
| Guardian NG | 0-3% | - | 0-3% |
| Guardian NG | 0-5% | 0-5% | - |
| Guardian NG | 0-10% | 0-10% | 0-10% |
| Guardian NG | 0-30% | 0-30% | - |
| Guardian NG | 0-100% | 0-100% | - |
| Guardian NG | 0-100% Biogas | 0-100% Biogas | - |
| Accuracy | ±2% of full scale | ||
| Response time | T90 = <30 seconds from sample inlet | ||
| Power requirements | 90 to 260 VAC 50 to 60 Hz | ||
| Power consumption | 13 W typical | ||
| Warm-up time | 1 minute (initial) 30 minutes (full specifications) | ||
| Humidity | Measurements are unaffected by 0-95% relative humidity, non condensing | ||
| Outputs | 4 - 20 mA / 0-20 mA analogue output 11V guaranteed drive capability Alarm ranges: zero to full scale. Alarm 1 relay, Alarm 2 relay and Fault relay SPCO (single pole change-over) | ||
| Voltage free contacts rating | 8A at 250V AC (resistive load) 8A at 24V DC (resistive load) | ||
| Enclosure rating | IP54 | ||
| Please Note | Equipment is configured for one gas type at a time. | ||
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