Suction Type Gas Detectors DA-800

Safeguarding Industries: DA-800 Gas Detection System

The DA-800 is a state-of-the-art gas detection system designed to identify and quantify a wide range of combustible, toxic, and VOC gases that may escape from industrial environments. It caters to the needs of gas producers, users, reservoirs, and by-producers, ensuring their safety and operational efficiency.

This sophisticated indicator and transmitter-type gas detector not only swiftly translates detection signals into standardized current outputs but also conveys them to external devices, making it a critical component for industrial safety.

The DA-800 transmitter prominently showcases the sensor's current and voltage signals in gas density on its LCD screen. Simultaneously, it converts this data into a 4-20mA standard current output signal, which can be seamlessly transmitted to external systems. This level of integration enables the DA-800 to be seamlessly incorporated into various controllers, including Gas Leakage Alarm Systems (GMS1000, GMS2000), PLCs, DDCs, and MMRs, facilitating the creation of comprehensive and tailored gas monitoring solutions.


  • Smart Technology: Equipped with a built-in microprocessor for enhanced convenience, accuracy, and efficiency in gas detection.
  • High-Resolution Output: Features a high-resolution (HD) A/D converter for precise signal output.
  • Reliable Alarms: Incorporates LOW/HIGH 2-step relay contacts (AL1/AL2) for seamless integration with external devices such as fans.
  • Long-Distance Signal: Offers stable and long-distance signal transmission (up to 2.5km) through the 4-20mA output.
  • User Customization: User-programmable menu allows for personalized operating functions, tailoring the device to your specific needs.

Technical Properties:

  • Gas Sampling: Suction Type
  • Density Display: LCD Display (PPM, %LEL, % vol - User Adjustable)
  • Input Power: DC 20-30V
  • Explosion Proof: Ex d IIB+H2 T6 (Korea Gas Safety Certification)
  • Target Gases: Combustible, Toxic, O2, VOC
  • Detection Principle: NDIR (Nondispersive Infrared)
  • Suction Flow Rate: 0.2 l/min - 2.5 l/min
  • Suction Distance: Up to 100m
  • Measurement Range: Refer to Target Gas List (Page 16)
  • Accuracy: ≤ ±2% of Full Scale
  • Response Time: Within 10 seconds (90% of Full Scale)
  • Sensor Calibration: AUTO-CALIBRATION with Magnetic Switch
  • User Programming: Calibration Density & Measurement Range
  • Wiring: CVVS & CVVSB 1.5sq*3wire
  • External Output: 4mA-20mA (Transmits up to 2.5Km)
  • Alarm Output: 2-Step (HIGH/LOW) Alarm Relay Contacts
  • Operating Temperature: -20°C to 60°C
  • Operating Humidity: 5-95% RH (Non-Condensing)
  • Wire Conduit: 1/2” or 3/4” PF, NPT
  • Housing Material: Cast Aluminum Alloy
  • Mounting: Wall or Pipe Station