Gas Detector DA-500-HC GASDNA Vietnam

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).