รหัสสินค้า : E2648-LEL

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E2648-LEL Combustible gas detector-transmitter

Features

• Stable long-life metal-oxide / pellistor sensor
• Range 0...100% LEL
• Resolution 0,1 / 1 % LEL
• Two SPST relays option
• 2 × 4-20 mA or 0-10 V, RS485

Description

Combustible gas detector-transmitter E2648-LEL is a member of new PluraSens® family of multifunctional measurement instruments. The transmitter exhibits sensitivity to hydrogen, methane, acetylene, propane and butane.

Applications include underground parkings, boiler houses, battery charging rooms, kitchens, and other confined spaces, where potentially explosive concentration of combustible gases can accumulate.

The instrument utilises fully calibrated metal-oxide semiconductor or pellistor gas sensors with excellent repeatability, stability and long lifetime.

Two relays with closing contact (optional) may be used for remote signalling or concentration control. Two alarm set-points are user settable.

Two analog outputs and RS485 digital interface with industry standard Modbus RTU protocol can be used to connect the detector to safety or building automation systems.

Technical Data

Detected gases hydrogen, methane, acetylene, propane, butane

Default calibration methane CH4

Sensor type metal-oxide semiconductor (MOS)

pellistor (catalytic bead) on demand

Sampling method diffusion

Detection range 0...100% LEL

Resolution 0,1 / 1 % LEL

Sensor lifetime > 5 years (MOS)

> 3 years (pellistor)

Power supply 12...36 VDC (default),

24 VAC or 230 VAC as options

Digital interface RS485, Modbus RTU protocol

Analog outputs 2 × 4-20 mA / 0-10 V, user settable

Output relays (option) 2 × SPST relays (closing contact),

250 VAC / 30 VDC, 5 A max

Default alarm set-points 20% LEL / 50% LEL CH4

Enclosure die-cast aluminium, wall mount, IP66

Dimensions H120 × W125 × D57 mm

Operating conditions -40...+70 °C, 15...95 %RH (MOS)

-10...+50 °C, 0...95 %RH (pellistor)