The instrument’s fault supervision circuitry continuously monitors for failed sensor cell and communication line breaks. Plus sensor cell operation is continuously supervised 24/7 and when used in conjunction with distributive control systems or PLC’s, provides immediate fault identification for a disconnected sensor cell.
The Air check LEL gas detector is housed in a Nema 4 explosion proof enclosure and is available for hydrogen gas. Capable of monitoring the % LEL combustible gases, the Air check Ex is a perfect monitoring solution for providing worker protection in chemical plants, refineries and other areas requiring hazardous classifications.
- LEL Combustible Gas Monitor with 0-100% Range
- Non-Intrusive One-man Calibration
- Ex Proof Enclosure
- Designed for Combustible Gases
- Local Digital Display
- 4-20 mA Analog Output
- Long Life LEL Catalytic Sensor
|Sampling Method||Diffusion Cell|
|Gases Detected 1||Ethane (C2H6)|
Ethyl Alcohol (C2H5OH)
Isopropyl alcohol (IPA)
Methyl Alcohol (MeOH)
|Accuracy||± 10 % of Reading|
|Operating Temperature||-32 to +50 ºC|
-25 to +122 ºF
|Display||3 1/2″ Digit LCD Digital Display|
|Sensor Type||LEL Catalytic Bead|
|Sensor Life||2 to 5 years under Normal Conditions|
|Signal Outputs||4-20 mA analog output|
|Power Requirements 2||24 VDC|
|Enclosure||Nema 4 Explosion Proof Suitable for Class 1, Group B,C, & D|
|Optional Extras||Alarm Output: 3ea. Alarm Relays: Low and High Level Gas Alarm and System Fault|
Signal Output: Modbus Digital Communications
1 Contact PureAire for more gases
2 48 V DC, 3 Wire Available for LEL and Hydrocarbon Gases.
The PureAire Air check Ex incorporates sophisticated electronics which, when used in conjunction with distributive control systems or PLC’s enable you to quickly identify and correct major system faults. These enhanced self-diagnostic capabilities include missing cell and broken transmitter wiring. Should a system error occur, the Air check Ex outputs a 0 mA signal to remote alarm/control systems to immediately alert control room personnel.