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Product Details

AS-525 Online Toxic And Harmful Gas Detector Product Overview

The AS-525 online toxic and harmful gas detector of Bebur Company uses electrochemical principle technology to detect the concentration of various toxic and harmful gases in the ambient air. It can convert the gas concentration monitored on site into a standard 4-20mA signal output or RS485 output It is a standardized three-wire online detection instrument for toxic and harmful gases suitable for factory applications, featuring LCD on-site display and plug-and-play sensor replacement. It meets the requirements of industrial site safety monitoring for equipment reliability and diverse types of measured gases.

AS-525 online toxic and harmful gas detector

Applications

The industries such as petroleum , chemical , metallurgy, environmental protection , paper-making , municipal , biochemical medicine and water treatment.

Features

●Long service life,low-temperature resistance,strong tolerance to sulfide and silane gas poisoning

●Built-in temperature compensation circuit for accurate measurement

●Designed with cover-free style,infrared remote control calibration,operation

●Cast aluminum shell,suitable for various industrial environments

●Easy to install and maintain,sensor replacement on site(plug and play)

●Standard three-wire 4-20mA signal output or RS485 output,compatible with DCS or PLC system

●Field level-2 sound and light alarms,relay output(with the external equipment such as external exhaust connected)

Technical parameters

Principle of detection	Electrochemistry
Gas for detection	Toxic and harmful gases(see gas list for details)
Repeatability	≤±2%
T90 reaction time	＜60s（NH3＜150s）
Polarization time	6h
Calibration	Every 4-8 months
Reset	Every 3-6 months
User interface	Infrared remote control
Operating pressure	Standard atmospheric pressure±10%
Working humidity	0-95%RH(no condensation)
Working temperature	-40℃-70℃(limit)；-20℃-50℃(typical)
Output signal	4-20mA，RS485
Connection	Analog three-wire system
Display	Displayed by LCD backlight,gas concentration,alarm display
Explosion-proofclass	Ex db IIC T6 Gb
Protection grade	IP66
Standard configuration	Detector host、Remote control、Instructions
Optional configuration	Audible-visual warning light
Accessories installation	Mounting bracket、Rain cover

Type of gas detected

Name	Chemical formula	Standard range	Highest range
Ammonia	NH3	0-100PPM	0-5000PPM
Carbon monoxide	CO	0-200PPM	0-1000PPM
Sulfur dioxide	SO2	0-100PPM	0-40000PPM
Ozone	O3	0-5/50PPM	0-30000PPM
Ethylene	C2H4	0-100PPM	0-1500PPM
Formaldehyde	CH2O	0-10PPM	0-1000PPM
Ethylene oxide	ETO	0-100PPM	0-5000PPM
Vinyl chloride	C2H3CI	0-100PPM	0-2000PPM
Chlorine	CL2	0-20PPM	0-5000PPM
Hydrogen peroxide	H2O2	0-500PPM	0-2000PPM
Hydrogen sulfide	H2S	0-100PPM	0-5000PPM
Hydrogen chloride	HCL	0-100PPM	0-1000PPM
Hydrogen cyanide	HCN	0-100PPM	0-2000PPM
Nitric oxide	NO	0-100PPM	0-2000PPM
Nitrogen dioxide	NO2	0-20PPM	0-1000PPM
Phosphine	PH3	0-200PPM	0-4000PPM
Monosilane	SiH4	0-20PPM	0-200PPM
Hydrogen	H2	0-1000PPM	0-2000PPM
Oxygen	O2	0-25%VOL	0-30%VOL
Chlorine dioxide	CLO2	0-20PPM	0-200PPM
Carbon disulfide	CS2	0-100PPM	0-100PPM
Hydrogen fluoride	HF	0-10PPM	0-10PPM
Alcohols	ALC	0-100PPM	0-100PPM
Acid gas	Acid	0-100PPM	0-100PPM
Fluorine	F2	0-1PPM	0-1PPM
Methyl mercaptan	CH4S	0-10PPM	0-14PPM
Hydrazine	N2H4	0-1PPM	0-1PPM
Acrylonitrile	C3H3N	0-20PPM	0-100PPM