Fixed Nitrogen Dioxide (NO2) Gas Detector, 0 to 100/500/1000 ppm

High-quality fixed nitrogen dioxide gas detectors with self-calibration and zero calibration functions, make the detection more accurate and reliable. Measuring ranges of 0-20, 0-50, 0-100, 0-500, 0-1000ppm, with temperature compensation for gas concentration under condensing conditions. The infrared controller can remotely control the gas alarm setting, and the gas leak detector can output one or two switching signals, which can drive the ventilator or solenoid valve and other external devices. Adopting original overseas gas sensors, it is compatible with various controlled alarms, PLC, DCS, and other control systems, and can be remotely monitored.

Features

• Adopting high precision sensor for accurate gas leak detection.
• Equipped with 3-wire system 4-20mA analog output, relay output, RS485 output (optional).
• Compatible with various controlled alarms, PLC, DCS and other control system, and can be remote monitored.
• Explosion-proof design, fast, relaible and stable.
• Infrared ray controller can remote control the alarm point settings, zero calibration, and address modification.
• Two-stage alarm with sound and light, and the alarm point is settable.
• With self-calibration function, and three standard keys will be used to realize on-site maintenance.
• Can output one or two on-off signals, can drive ventilator, solenoid valve or other external devices.

Specification

Note: To measure confined spaces such as pipelines, please contact us and inform the detailed conditions of use.

Fixed Gas Detector Dimension (Unit: mm)

***Other Common Gases and Ranges Available for Fixed Gas Detectors

Note: Some common gases and the measuring ranges are listed in the above table. For more information, please feel free to contact us.

Details

Tips: Fixed Nitrogen Dioxide (NO2) Gas Detector Working Principle

1. Chemical or Electrochemical Sensors: Fixed NO2 gas detectors typically use chemical or electrochemical gas sensors as the core component to detect the presence and change in concentration of NO2 gas.
2. Gas Sampling: Gas leak detectors typically introduce a sample of ambient air into the gas sensor via a gas sampling system. This can be accomplished through a pumping system, pump, or other sampling device.
3. Potential Measurement: Once NO2 gas enters the sensor, a catalytic reaction at the working electrode causes a change in potential. The electrode circuitry measures this potential change and converts it into an electrical signal.
4. Signal Processing and Data Output: Gas tester typically include signal processing circuitry to amplify, filter and stabilize the signal obtained from the sensor. Finally, the gas detector outputs the measured NO2 concentration data in digital form, usually presented to the user via a display, data logging system, communications interface, etc.
5. Calibration: To ensure accurate measurements, fixed NO2 gas detectors usually require periodic calibration. This can be done by using a known concentration of calibration gas.