HF alarm

HF HF HF HF alarm products alarm description for a variety of industrial environments and the special circumstances of the hydrogen fluoride concentration in continuous on-line inspection, Equipment imported electrochemical sensor and microcontroller technology, with signal stability, high accuracy, good repeatability Advantages explosion junction 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; Product name Hydrogen fluoride HF alarm HF / NE-301 detects hydrogen fluoride gas HF power detection principle The chemistry of the detection range of 0.01ppm detection method 0-10ppm resolution diffusion type, 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 can store data (optional) ③2 relay output on your computer: Passive shock capacity 220VAC 3A, 24VDC 3A (optional) ④ Alarm 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 intrinsically safe explosion-proof type of mark Ex ibdIICT4 protection class IP45 direct reading PPM,% LEL,% VOL arbitrary sensor life 24 months Ambient 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