The GM25-4 is a gas analyser for site investigation, landfill gas control, and environmental regulation compliance monitoring.
The GM25-4 portable gas analyser makes all work steps as easy as possible for you. It is a fixed configuration, measuring the proportions of gases presented in greenfield and brownfield sites, as well as land affected by landfill operations or other contamination. Operation is extremely simple, yet the readings obtained are comprehensive and accurate.
The GM25 series can be used by itself or in combination with the DataField GM25 Connect app which allows the GM25 analyser to be controlled via a mobile device or tablet. This results in faster operations whilst being able to configure how readings are taken suiting the individual users needs.
| ATEX Rating | ATEX, IECEX, UKEx II 2 G Ex ib IIB T1 Gb | |||
| Dimensions | 260mm x 100mm x 75mm | |||
| Weight | 1.1kg | |||
| Ambient Temperature Range | -10ºC to 40ºC | |||
| Aspiration Rating (minimum) | 300mil/min | |||
| Gas Measurements | ||||
| Channel | Sensor Type | Range | Resolution | Accuracy |
| CH4 | IR | 0-100% | 0.1% | ± 3.0% (vol.) 0-100%
± 0.3% (vol.) 0%-5% |
| CO2 | IR | 0-100% | 0.1% | ± 3.0% (vol.) 0-100%
± 1.0% (vol.) 25%-45% |
| O2 | EC | 0-25% | 0.1% | ± 0.5% (vol.) |
| H2S | EC | 0-5000ppm | 1ppm | ± 5.0% (of reading) or 75ppm (whichever is greater) |
| CO | EC | 0-2000ppm | 1ppm | ± 5.0% (of reading) or 75ppm (whichever is greater) |
| Hexane | Calculated | 0-2% | 0.1% | ± 0.2% |
| LEL (indication only) | Calculated | 0-100% | 0.1% | |
| Pressure Measurements | ||||
| Atmospheric | Transducer | 800 to 1200mB | 1mB | ± 5mB |
| Differential | Calculation | ± 1250Pa | 1Pa | ± 3Pa to ± 250Pa across the range |
| Flow Rate | Transducer | -60 - 100L/hr | 0.1L/hr | ± 10% of reading or ± 1L/hr (whichever is greater) |
| Optional Measurements | ||||
| Velocity | Vane Anemometer | 0.7-40m/s | 0.1m/s | ± 0.5 m/s |
| Temperature | Thermistor | -10-1000C | 0.5ºC | ± 1.00C |