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Crowcon GM128 | 128-Channel Addressable Gas Controller | 1-128 channels, Modbus, web live feed
The Crowcon GM128 is the largest GM addressable controller, with capacity for 1-128 channel inputs, supplied in 19 in rack-mount form. Its modular build keeps complexity down on large systems because only the modules the application needs are fitted. Channels can be grouped into zones, with 3-minute trends, multi-channel views and a live web-page feed for remote monitoring.
Key features
- Capacity for up to 128 channels
- Channels grouped into zoned areas
- Web-page live feed over Ethernet
- RS-485 Modbus RTU and 4-20 mA inputs
- Digital channels with no controller variability
- Relays rated 5 A 30 V; 19 in rack mounting
- Specifications
- Downloads
| Part Number | GM128 |
| Brand | Crowcon |
| Channel inputs | 1-128 |
| Mounting | 19 in rack |
| Power | 20-50 W typical without detector heads |
| Inputs/outputs | 4-20 mA 2-wire sink, 3-wire source; RS-485 Modbus RTU |
| Relays | 5 A 30 V |
| Network | RJ45 |
| Operating temperature | -20 to +50 °C |
| Humidity | 0-90% non-condensing |
| Drift | Digital: none; analogue <1% FSD per year |
| Area | Non-hazardous area, as part of an IS system |
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