Crowcon
Crowcon GMS-1 Single-Channel Gas Detection Controller
- SKU:
- CROWCON-GMS-1
- Availability:
- Usually ships in 3 business days
Description
CE (EUR) BUILD - READ THIS FIRST: every configuration listed here is Crowcon's European CE build of the Gasmaster control panel. It is CE marked for the European market and carries NO UL or CSA certification - if your project requires a UL-listed panel, this is not it, and CPS will tell you so before you order.
The Crowcon Gasmaster is a compact gas and fire control panel that monitors remote gas detectors, flame detectors and fire zones and shows the status of every input on one large, clear LCD display, with alarms and faults indicated by LEDs and an integral sounder. Relay outputs are provided for alarms and faults, plus dedicated outputs for audible/visual alarms, and an RS-485 Modbus output transfers all data to industry-standard control systems. Gasmaster logs all alarm and fault events for later investigation using Gasmaster PC software, and its modular design means you only buy the input modules you need - each configuration below is a factory build defined by how many of its channels are 4-20mA inputs and how many are mV (pellistor) inputs, and whether RS-485 communications are fitted.
How to read the configuration code: GMS-1 / GMS-4 = channels; the two digits are the number of 4-20mA inputs and mV inputs fitted (for example, -10 = 1× 4-20mA and 0× mV); EUR = European CE build; C = RS-485 communications fitted, Z = no communications. Every configuration in the dropdown also spells out its inputs and communications in full, starting with its CE (EUR) build status.
Common Applications:
Oil & Gas • Petrochemical • Chemical Plants • Water & Wastewater • Steel • Power Generation • Marine & Offshore
Need help selecting the right configuration? Call CPS Calibrations at (865) 900-8844 — every configuration on this page is a factory Crowcon build, and we calibrate what we sell.
- CE (EUR) build only - CE marked, no UL/CSA certification on any configuration listed here
- Large multilingual LCD shows gas levels from all connected detectors simultaneously - full system status at a glance
- Two levels of independent alarm per channel, configurable to suit site requirements
- Modular design - you only purchase the required number of input modules; the 4-channel panel can be extended later by adding modules
- Monitors virtually any combination of 4-20mA or mV pellistor gas detectors, fire zones (loops of up to 20 conventional smoke/heat detectors or call points) and flame detectors, plus Crowcon ESU sampling units
- Relay outputs (DPCO, 250Vac 8A), A/V alarm drives, per-channel 4-20mA analogue outputs and an RS-485 Modbus RTU serial link to DCS/SCADA/PLC systems
- Event logging - time-stamped log of up to 300 alarms, faults or system interventions (upload via optional PC communications kit)
- Remote inhibit and remote reset facilities enable control from any point on site
- All day-to-day functions, testing and recalibration are performed from the front panel; Gasmaster PC software enables reconfiguration and event-log upload
- Internal 1.2Ah battery back-up fitted as standard
| Channels | 1 channel (single detector, fire zone or ESU) |
| Size | 288 x 278 x 110 mm (11.3 x 10.9 x 4.3 in) |
| Weight | 4.5 kg (10 lbs) |
| Enclosure material | Back-box: cast aluminium; front cover: ABS (flame retardant) |
| Ingress protection | IP65 |
| Power | 100-240Vac 50-60Hz or 20-30Vdc, 60W max |
| Battery back-up | 1.2Ah batteries fitted internally |
| Operating temperature | -10 to +50 °C (14 to 122 °F) |
| Humidity | 0-95% RH non-condensing |
| Gas inputs | 2 or 3 wire 4-20mA gas detector (sink or source) or mV pellistor flammable gas detector, per channel as configured |
| Fire inputs | Per channel: one loop of up to 20 conventional smoke/heat detectors or manual call points, or one flame detector (4-20mA or digital contact signal) |
| Relay outputs | DPCO contacts rated 250Vac 8A; low alarm, high alarm and fault (per channel plus common on the 4-channel panel); rising or falling, latching or non-latching |
| A/V alarm drive | 12Vdc or 24Vdc, 650mA max; suitable for +ve or -ve switched alarms |
| Analogue outputs | 4-20mA per channel (current source, max. loop resistance 700 ohm) or 1-5Vdc (min. load 50k ohm) |
| Serial link | RS-485 Modbus RTU for monitoring and control via DCS/SCADA/PLC systems (on communications-fitted configurations) |
| Event logging | Time-stamped log of up to 300 alarms, fault or system intervention activities |
| Panel indication | Back-lit LCD showing gas level (ppb, ppm, % vol or % LEL) with scrolling alphanumeric status; LEDs for Alarm, Fault, Power and Warning; integral 85dB sounder (at 10 cm) |
| Approvals | EMC: EN 50270, EN 60945, FCC Part 15, ICES-003 |
| Certification | CE (EUR build) - no UL/CSA certification; see the certification note at the top of the Description tab |
Product Documents & Resources
- GMS (Gasmaster) Datasheet (PDF)
Document files are being added to this page. Need one now? Email info@cpscalibrations.com and we'll send it straight over.