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DA-750 - Gas Detector

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Quick Overview

Model: DA-750
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

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Mr Duy
0918 364 352

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Details

DA-750

Introduction

DA-750 detects leakage of various toxic or combustible 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. Built-in micro pump suctions gas continuously which is effective gas sampling especially for closed area. DA-750 converts digital signal into the 4-20㎃ standard current signal for output signal which can be transmitted to various external devices such as PLC, DDC, RECODER, and so on to construct the gas monitoring system more extensive as well as more comprehensive. DA-750 provides RS-485 communication signal and gas leakage alarm signal by relay contact output. Besides, DA-750 has DC 4-20mA standard output which realizes max 2500m long distance output signal transmission from sensor to receiver and RS-485 communication signal which realizes max 1000m long distance signal transmission.

Features

Auto-Suction Type

Built-in micro pump suctions gas continuously which is effective gas sampling especially for closed area.

LCD Display with Back-Light

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

Isolation Circuit

Built-in isolation circuit prevents electrical noise to secure stable sensor operation.

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	Suction Type
Input power	DC 20V~30V (24 V DC Normal) / 250mA (Max.)
Sample gas volume	0.2 l/min ~ 2.5 l/min
Accuracy	≤ ±2%/Full Scale
Output signal	4-20㎃ DC/F.S
Density indication	LCD Display - PPM, %LEL, %vol, or PPb
Alarm	AL1 Alarm - LOW LED(RED) AL2 Alarm - HIGH LED(RED)
Setting of alarm value	AL1/AL2 2 stages Alarm-User can optionally set.
Alarm delay time	0~99seconds with user adjustable
Alarm clearing	Manually or automatically
Alarm output	2 step alarm relay contact (AL1/AL2)
Operating temperature & humidity	-20℃ ~ 50℃, 5% ~ 95% RH (Non-condensing)
How to install	Wall Mounting Type
Signal cable	CVVS & CVVSB 1.5sp*3 Wire-Shield Type
Gas inhaling	6Ø Tube”
Output option	RS-485