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DA-500 - Gas Detector

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Quick Overview

Model: DA-500
Xuất xứ: KOREA
Nhà cung cấp: STC Viet Nam
Hãng sản xuất: GASDNA

Availability: In Stock

Regular Price:

Special Price Liên Hệ: 0918 364 352

Contact

Mr Duy
0918 364 352

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Details

Introduction

DA-500 detects various combustible & toxic gases leaked from industrial areas for gas producers, gas users, gas reservoirs, gas by-producers, and so on, in order to prevent any accidents in advance. DA-500 converts digital signal into the 4-20mA standard current output signal which can be transmitted to various devices such as PLC, DDC, or recorder to build comprehensive gas monitoring system. Also, DA-500 provides RS-485 communication signal and alarm relay contact. DC 4-20mA standard output signal realizes max 2500m long distance output signal transmission and RS-485 communication signal realizes max 1000m long distance signal transmission.

Features

Digital Process

Digital processor based on built-in micro processor realizes various artificial intelligent functions which result in convenient gas monitoring environment.

Self diagnosis

Digital process automatically diagnoses the sensor signal and sends 2mA error signal output on the malfunction in the sensor.

Auto-calibration without opening cover

You don’t need to open front cover for calibration. You only have to touch cover window using magnetic bar. It is quite useful for the corrective work in the explosive area.

LCD display with back light

LCD offers real-time display of gas density and back light offers easy reading even in dark area.

User programming

User programming calibration density and detection rage offers user’s own operating functions.

Built-in HD(high dissolution) A/D converter for accurate output signal.

Multi signal output

Various output signals - DC 4-20mA, 2 step-relay contact, & RS-485(option) – provides best networking with all kinds of devices & equipments.

4-20mA transmitter

4-20mA output enables stable and long distance (maximum 2.5km) signal transmission.

RS-485

RS-485 enables stables stable and long distance (maximum 1.2km) signal communication.

Alarm output

SPST 2 step relay contacts (AL1/AL2).

Details


Detection principle	NDIR (Nondispersive infrared)
Gas sampling	Diffusion type
Target gas	Combustible gas, Toxic gas
Measurement range	%LEL, PPM, %vol
Response time	Within 30sec, 90%/full scale
Accuracy	≤±2%/Full Scale
Sensor displacement	Zero - ≤±1%LEL/6 Month, Span -≤±1%LEL/6 Month
User programmable	Calibration density, detection range
Input power	DC 20~30V
Output power	4~20mA/Full Scale - 2.5km Transmission
Operating temp.& humidity	-30℃~60℃, 5~95% RH (Non-Condensing)
Signal cable	CVVS & CVVSB 1.5sq x 3 Wire - Shield Type
Wire conduit	1/2” or 3/4” PF, NPT
Installation type	Wall or Pipe Station
Exterior material	Cast Aluminum Alloy
Explosion-proof	Ex d IIC T5 - Korea Gas Safety Corporation
Output	2 step- Relay Contact (High/Low)
Communication output	RS-485 communication output(option)