AS-525 Online VOC Gas Detector Product Overview

The Bebur AS-525 online voc gas detector can be used for continuous online detection of the concentration of VOC gases in ambient air. The instrument adopts the PID detection principle and can transmit and output the gas concentration data detected on-site through 4-20mA signals or RS485 signals. It is a standard three-wire online VOC gas detection instrument, featuring on-site LCD display, quick sensor replacement, and plug-and-play functionality, which can meet the application requirements of different industries.

Applications

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

Features

●Built-in temperature compensation circuit for accurate measurement  

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

●Fast response speed , high measuring accuracy  

●Multiple range options can meet requirements of customers  

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

●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

Working principle

The photoionization detector provides ionization energy via a high-energy ultraviolet lamp.When the volatile organic compounds  (VOCs) with an ionization potential  (IP) less than the energy of the ultraviolet lamp passes through the ionization cavity, the ultraviolet light source (UV) of the PID will break the compound into detectable positive and negative ions (that is , the ionization process) . The detector measures the ionized gas charge and converts it into a current signal , which is then amplified and converted into a concentration value . Upon the detection , the ions recombine into the original gas and vapor.

Technical Parameters