Methane (CH4) Gas Sensor (0-100% LEL)
UL61010 - Calibration Free - 10y+ lifespan

VOC-H2-TEMP sensor
RS485 VOC-H2-TEMP sensor

standard sensor version connecting to base unit with Modbus TCP, SNMP or MQTT output

native Modbus RTU (RS-485) version with 24v DC input and 2 relay outputs with 256 addresses

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key sensor features
Introducing our second generation digital SNMP & Modbus TCP sensor designed for monitoring 24x7 methane CH4 levels and detect leaks from lead acid and li-ion battery banks. For up to 100% LEL (lower explosive limit) or 5,000ppm CH4. Sensor is designed for use in non hazardous, commercial and zone 2 classed environments like data centers, battery rooms, mechanical rooms, cooling rooms, warehouses and more.

no pc required for the ServersCheck to operate once configured - measures methane in the air between 0 to 100% LEL
- T90 for methane in less than 30seconds
- with a ±3% LEL accuracy from 0-100%

- available as a standard sensor
- or daisy chained (up to 16 sensors per daisy chain)
- or native RS-485 sensor with 2 relay outputs

- UL 61010 pending

- 10+ year life span in normal conditions

- compact plug & play sensor.
- designed for indoor use.
- steel enclosure for non-power sensors or non-IP sensors. custom color & logo options available.
- industrial grade.
- 0u rack, DIN rail, magnetic or wall mountable sensor.
- plugs into the base unit.
- powered by the base unit (PoE, 12v DC, optionally 24v or -48v)
- alerts via SNMP Traps, email or SMS.
- out of the box integration via Modbus TCP, SNMP.
- optional integration via MQTT for Industrial IoT applications1New feature.
- optional integration via RS-485 enabling direct integration with your own gateway & controllers.2New feature

1Requires FW 10 or higher
2Some sensors are not available in RS-485 native versions. In that case RS-485 is available using the optional Modbus RTU module.
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modular architecture
hydrogen gas sensor architecture
A modular architecture enabling you to integrate it with your on-premises monitoring systems using IP based industrial protocols like Modbus TCP and SNMP. Optional add-on to connect sensor data to a Modbus RTU controller. With our optional and special firmware the base unit can connect to a MQTT provider of your choice.

With the output controls of the SensorHub, the system can on its own take corrective actions when too high flammable levels have been detected. For example you can start a fan as soon as flammable gas is detected and trigger a siren when a maximum limit has been exceeded.
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lab & bump testing
The sensor is calibration free over its entire life span.

For bump testing we offer the optional SPARE-GAS-BUMP adapter which is mounted on to the sensor. It enables you to self test the sensor at frequent intervals to ensure its operation within your own safety & operational requirements.
hydrogen bump gas testing