Sulfur Hexafluoride (SF6) Gas Sensor

SF6 Gas Sensor

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key sensor features
The SF6 gas sensor is a NDIR technology based sensor designed to detect leaks from Gas Insulated Switchgear (GIS).

no pc required for the ServersCheck to operate once configured - measures SF6 gas concentrations up to 1,000ppm
- accuracy of ±1% below 250ppm; ±5% above 500ppm
- lab tested and calibrated
- designed for following standards: EN 504020, EN 61508 (parts 1-7)
- up to 5 year life span
- operating temperature range of -20°C to +60°C

- additional sensors available for 20+ other gas types

- 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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Detecting SF6 leaks in switchgear
with InfraSensing's ENV-GAS-SF6 sensor
SF6 (sulfur hexafluoride) is a synthetic, man-made gas that is used in switchgear because it has a high dielectric strength and a low arc-quenching time. This means that it can effectively insulate and protect electrical equipment from damage due to high voltage arcing.

NDIR (non-dispersive infrared) SF6 gas sensors from InfraSensing are the best technology for detecting SF6 leaks because they are highly sensitive and accurate. They work by measuring the absorption of infrared light by the SF6 gas, which allows them to detect even very small leaks.

If an SF6 leak goes undetected, there are several risks. First, the gas is a potent greenhouse gas that contributes to global warming. Second, SF6 is a toxic gas that can be harmful to human health if inhaled in large amounts. Finally, if an SF6 leak goes undetected, it can cause damage to electrical equipment, which can lead to costly repairs or even system failures.
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calibration & bump testing
Prior to shipping every gas sensor is manually tested in our lab against calibrated gas.

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 intervals to ensure its operation within your own safety & operational requirements. Do note that each bump test impacts the sensor life span and accuracy. Incorrect bump testing may permanently damage the sensor.
hydrogen bump gas testing
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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 threshold levels have been detected. For example you can start a fan as soon as a specific is detected.