Gas Leak Detector Gasmaster GM-4

Order no.: GMS-4

£ 1,512.00
£ 1,814.40
GMS-4
price ex. (VAT / delivery)
Delivery time: 5-7 working days
Stationary gas leak detector Gasmaster GM 4 / (with ATEX approval) /
For adapting up to 4 gas sensors / For O2, O3, CO, CO2, NH3, H2S


The Gasmaster GM-4 gas leak detector is a reliable, stationary warning device for gases. To connect a gas sensor, the gas measuring device is optionally supplied with one to four 4 - 20 mA or mV signal inputs. Each signal input has two alarm relays with which the gas detector can control signal lamps/horns or fans, for example. Two additional relays for alarm 1 and 2 are installed inside the device. The Gasmaster gas warning system also has a third relay inside for the fault alarm. A large display shows the measured values in ppb, ppm or %. In addition, the gas detector can be equipped with an optional interface for PC configuration or for uploading the event log.

- Various combinations possible
- Event logging
- Large, backlit LCD display
- A/V alarm device Max. 24V DC 650 mA
- Communication port for PC configuration
- Operating temperature -10 ... + 50 °C / 14 ... 122 °F
- Air humidity 0 ... 95% rel. humidity
Technical specifications
Sensor inputs up to 4 inputs for a gas sensor
optional 4...20 mA or mV input
Outputs A/V alarm control: 12/24 VDC, 650 mA max.control
analog: 4...20 mA or 1...5 VDC
serial interface: RS-485 Modbus RTU
Memory for 300 processes
Display LCD with backlight
display in ppb, ppm or %
Alarm indicators acoustic: 85 dB loud beep
visual: alarm LEDs
Working temperature range   -10 ... +50 °C / 14 ... 122 °F
Working humidity range 0 ... 95 % RH (not condensing)
Supply 90 ... 264 VAC / 50 ... 60 Hz
Backup battery 1.2 Ah
Housing material frame made of stainless steel / front made of ABS plastic
Dimensions 288 x 278 x 10 mm / 11.3 x 10.9 x 0.4"
Weight 4.5 kg / 9.9 lb
Standards EN 50270 (EMC), EN 61010-1 low voltage
Protection class IP 54

1 x Gasmaster GM-4 gas leak detector
1 x Operating manual

N.B. Gas sensors optional