Combustible gas alarm

Combustible gas alarm combustible gas alarm product description for a variety of industrial environments and the special circumstances of the hydrogen sulfide concentration in continuous on-line inspection, Equipment imported electrochemical sensor and microcontroller technology, with signal stability, high accuracy and good reproducibility etc., explosion-proof wiring method is applicable to all kinds of dangerous places. Instrument compatible with various control alarms, PLC, DCS? And other control systems, remote monitoring can be achieved, remote control, remote alarm, computer data storage, analysis and other functions. ? Features LCD site gas concentration;? High-precision, long-life electrochemical, infrared sensors import;? A powerful set of software support to meet any range and any gas detection needs of customers between 1.0000-99999;? By controller or remote control, without opening the cover of the detector alarm point adjustment, zero adjustment and calibration target;? applies to dozens of gas detection, you can choose to display the name of dozens of common gases;? gas unit name PPM,% LEL, % VOL, can be arbitrarily set;? program of three floating-point arithmetic using technology to ensure the accuracy of the calculation;? in the whole range on any setting upper and lower alarm;? RS485 communication bus wiring is simple and convenient;? 4 ~ 20mA current output signal can be corrected, fully isolated, product jamming;? 2 normally open dry contact outputs for controlling fans or AC contactor solenoid valve;? compact power supply design, superb anti- mine design, pure SMT component placement process, so that product performance and stability;? ingenious structural design, the detector wiring exemption screws, installation is very simple; the product name combustible gas alarm H2S / EX-301 combustible gas detector gas detection principle catalytic combustion principle Detection range 0-100% LEL Resolution 1% LEL Test way Diffused, pump priming optional Display LCD output signal from the user according to actual requirements, as far as can be transmitted 2,000 meters (single 1mm2 shielded cable ) ① two-wire 4-20mA current signal output (three-wire optional) ②RS-485 digital signal output, with RS232 adapter for storing data (optional) ③2 relay outputs are available on the computer: a passive shock capacity 220VAC? 3A, 24VDC 3A (optional) ④ alarm signal output:? live sound and light alarm, alarm sound: <90 db (optional) detection accuracy ≤ ± 2% (FS) Repeatability ≤ ± 1% Zero drift ≤ ± 1% (FS / Year) Alarm audible alarm response time is less than the recovery time of less than 20S 20S type intrinsically safe explosion-proof mark Ex ibdIICT4 protection class IP45 direct reading PPM,% LEL,% VOL arbitrary sensor life 24 months Environment Temperature -20 ℃ ~ + 70 ℃; relative humidity ≤95% RH (non-condensing) Power supply 24VDC (normal operating voltage range: 10 ~ 30VDC) Dimensions (including exploration gun length) 170 × 140 × 80mm Weight 1.5Kg Case Material Stainless steel / aluminum alloy