รหัสสินค้า : E2638-CH4

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E2638-CH4 Methane Detector

Methane detector-transmitter E2638-CH4 is a member of new PluraSens® family of multifunctional measurement instruments.

Applications include underground parkings, boiler houses, kitchens, and other areas, where potentially explosive concentration of methane 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.

Features

Stable long-life metal-oxide / pellistor sensor

Range 0...100% LEL CH4

Resolution 0,1 / 1 % LEL CH4

Two SPST relays option

2 × 4-20 mA or 0-10 V, RS485

Technical Data

Calibration methane CH4

Sensor type metal-oxide semiconductor (MOS)

pellistor (catalytic bead) on demand

Sampling method diffusion

Detection range 0...100% LEL CH4

Resolution 0,1 / 1 %LEL CH4

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 grey ABS plastic, wall mount, IP65

Dimensions H90 × W145 × D55 mm

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

-10...+50 °C, 0...95 %RH (pellistor)

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