Hydrogen Chloride (HCl) Gas Sensor, 0-50ppm/0-500ppm

Good price HCl gas sensor detects 0-50 ppm or 0-500 ppm (optional) with a 100 ppm max load. Features 300 ±80 nA/ppm sensitivity, 0.1 ppm (0-50 ppm) and 1 ppm (0-500 ppm) resolution, ±10% precision, and ≤70s response time. Works in 90-110 kPa pressure and -30°C to 50°C temperature. Great for industrial plants, tunnels, power, and petrochemical industries. 

Specification

Dimension (Unit: mm)

Crossover Interference

The hydrogen chloride (HCl) gas sensor also responds to gases other than the target gas. For reference, the response characteristics of the sensor to several common interfering gases are listed in the table below. The data in the table are typical responses of interfering gases at a given concentration.

Basic Test Circuit

Application

Hydrogen chloride (HCl) gas sensor can be used in industrial plants, transportation tunnels, energy and electric power, petroleum and petrochemical, coal mine tunnel, instrumentation, fruit trees and gardens, farms and pastures, agricultural greenhouses, floriculture, laboratories and so on.

Tips: What factors can affect the performance of this HCl gas sensor?

Several factors can influence the accuracy and longevity of the sensor:

• Temperature & Humidity: The sensor operates within -30°C to 50°C and 15%RH to 90%RH (non-condensing). Extreme temperatures can affect sensor response, while high humidity may introduce minor signal drift.
• Gas Interference: While the sensor is designed to be highly selective, exposure to gases such as SO₂, NO₂, and H₂S may cause slight cross-sensitivity effects. However, advanced filtering techniques minimize these impacts.
• Calibration Frequency: Over time, sensor readings may drift due to electrode aging or environmental exposure. Regular calibration every 3-6 months ensures ongoing accuracy.
• Long-Term Exposure to High Concentrations: Prolonged exposure to HCl levels near or beyond the maximum load concentration (100 ppm for the 0-50 ppm model, 1000 ppm for the 0-500 ppm model) may lead to temporary saturation or degradation of sensor components.