รหัสสินค้า : E2648-CH4

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E2648-CH4 Methane detector-transmitter

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

Description

Methane detector-transmitter E2648-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 pellistro gas sensor 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

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 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)