Hangzhou Zetian Technology

Zetian - Model TVAS-5000 - Calorific Value Analyzer

From Industrial Process - Laser Gas Analyzer

Based on infrared gas absorption analysis method, TVAS-5000 calorific value analyzer adopts intelligent digital processing technology to realize the analysis process of gas concentration value and calorific value in gas. It has the characteristics of high degree of automation, strong function, easy operation and digital communication.

Most popular related searches

Working principle

Spectral absorption method shows that many gas molecules have characteristic absorption in the infrared band. According to the Lambert-Beer law, the characteristic absorption intensity is proportional to the gas concentration. The TVAS-5000 calorific value analyzer adopts this principle and belongs to the NDIR (non-spectroscope) infrared gas analyzer.The TVAS-5000 calorific value analyzer adopts the mature and reliable analysis method in the field of gas analysis, and selects the international advanced MEMS infrared light source and dual-channel infrared detector.
TVAS-5000 calorific value analyzer measures CO and CO2 by NDIR method, H2 concentration by thermal conductivity method, O2 concentration by electrochemical method, and then calculates the calorific value according to the gas calorific value coefficient.

Main Functions

Accurate measurement of CO, CO2, O2 and H2 gas concentration and calorific value
Color LCD screen display, display information clearly.
Touch screen operation, easy to operate.
4-20mA current loop output.
8-way switch quantity (relay) output.
RS232 communication, easy to expand to RS485.

Specifications

Typical Range: CO 0-100%, CO2 0-50%, O2 0-25%, H2 0-10%
Working Environment Temperature: (5-45)℃
Linearity Deviation: ±2%FS
Stability: ±2%FS/7d
Repeatability: 1%
Response Time (T90): ≤25s
Ambient Temperature Influence: ±2%FS (5-45)℃

Features

NDIR measurement method, easy to use, replaces the combustion method calorific value meter.
The design of the dual-channel detector effectively improves the stability of the instrument.
Eliminate the influence of CO2 on H2 interference through dynamic compensation.
The isolated current loop output and switch output can eliminate the influence of various external disturbances on the instrument measurement.

Applications

Analysis of blast furnace top gas composition in metallurgical industry
Composition and calorific value measurement of industrial gas in the field of coal gasification