Combustible Gas Monitor Air Check

LEL combustible

$1,495.00

Item #: EX-2300, 95105

Product Summary

The Air Check Ex Combustible Gas Monitor is a gas monitor or gas detector for continuously monitoring combustible gases. The Air check Ex LEL ( Lower explosive limit) can be used for hydrogen (H2), natural gas (CH4), acetylene, and other various combustibles. The product uses a 4+ year sensor and requires low maintenance.

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 MethodDiffusion Cell
Gases Detected 1Ethane (C2H6)
Ethyl Alcohol (C2H5OH)
Ethylene (C2H4)
Isopropyl alcohol (IPA)
Methane (CH4)
Methyl Alcohol (MeOH)
Xylene ((C6H4(CH3)2)
Accuracy± 10 % of Reading
Operating Temperature-32 to +50 ºC
-25 to +122 ºF
Display3 1/2″ Digit LCD Digital Display
Sensor TypeLEL Catalytic Bead
Sensor Life2 to 5 years under Normal Conditions
Signal Outputs4-20 mA analog output
Power Requirements 224 VDC
3 Wire
Width5.3 in
135 mm
Height6.125 in
156 mm
Depth4.61 in
117 mm
Weight4.0 lb
1.8 kg
EnclosureNema 4 Explosion Proof Suitable for Class 1, Group B,C, & D
Optional ExtrasAlarm 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.

Self-Supervised Operation
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.

Air Check LEL Combustible Gas Monitor Literature

Air Check EX LEL Manual 

LEL Combustibles Layout 

LEL Monitor Layout 

LEL Monitor with Fan Relay