Features

Stable long-life metal-oxide sensor
Range 0...100% LEL or 0...1000 ppm
Resolution 0,1% LEL or 1 ppm
Two SPST relays option
2 × 4-20 mA or 0-10 V, RS485

Description

Volatile organic compounds detector-transmitter E2638-VOC is a member of new PluraSens^® family of multifunctional measurement instruments which is intended for detection of various solvent vapors, e.g. toluene, xylene, ethanol.

Applications include storages, painting chambers and other areas, where toxic or potentially explosive concentration of volatile organic compounds can accumulate.

The instrument utilises a fully calibrated metal-oxide semiconductor gas sensor with excellent repeatability, stability and long lifetime.

According to user's preferences the detector can be ordered for either fire prevention (range 0...100% LEL) or for toxicity prevention (range 0...1000 ppm).

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 vapors	acetone, ethanol, toluene, xylene etc
Default calibration	toluene
Sensor type	metal-oxide semiconductor
Sampling method	diffusion
Detection range	0...100% LEL (flammable range)
	0...1000 ppm (toxic range)
Resolution	0,1% LEL for LEL range
	1 ppm for ppm range
Sensor lifetime	> 5 years
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
	100 ppm / 300 ppm
Enclosure	grey ABS plastic, wall mount, IP65
Dimensions	H90 × W145 × D55 mm
Operating conditions	-40…+70 °C, <95 %RH (non-condensing)