XAR-H H2S Gas Detector

XAR-H H2S Gas Detector

Santacary XAR-H is a precise gas detector for monitoring hydrogen sulfide (H2S) in the workplace. It has been designed to notify of the presence of H2S gas.

Hydrogen sulfide is a colorless, flammable, extremely hazardous gas with a “rotten egg” smell. It is heavier than air and can collect in low-lying and enclosed poorly ventilated areas. The XAR-H will continuously display the concentration of H2S and activate its audible alarms whenever the preset set points are exceeded.

XAR-H can be widely used in iron smelters, oil refineries and petrochemical plant, oil and gas wells, tanks and compressor stations, offshore drilling, steel mills, landfills, food processing plants, breweries, wastewater facilities, pulp and paper industry, incoming cylinder inspection, process or emission gas analysis, and manure processing buildings etc.. In the above scenario, XAR-H can be used to avoid unhealthy and accidents caused by hydrogen sulfide produced in the workplaces.

Features

Portable H2S gas detector

H2S gas detector range: 0 ~ 500 PPM. Resolution: 1.0 PPM

Using 3-electrodes electrochemical H2S sensors, high precision

Support auto zero and span calibration

One press to restore factory setting, free from the bother of mis-operation

Audible alarm

Two set points of instantaneous alarm

Trend chart display showing the past readings for H2S

With temperature and humidity measurement

Only two buttons and easy to operate

Four AA Alkaline Batteries

Theory of Operation

The Santacary XAR-H H2S Gas Detector uses 3-electrode electrochemical technology, operating by the diffusion principle, for determining the concentration of H2S in air samples. In diffusion mode, the atmosphere reaches the sensor by diffusing through the air sampling ports on beside and top of the detector. Normal air movements are enough to carry the sample to the sensor.

Unit Description

Device

1.        Liquid crystal display (LCD)

2.        Power button

3.        Function button

4.        Battery compartment back cover

5.        Air sampling ports

Normal Display

1.        Alarm Status (None/Low Alarm/High Alarm)

2.        Battery Life Indicator

3.        H2S concentration

4.        H2S concentration unit in PPM

5.        Air Temperature

6.        % Relative Humidity

Calibration of Detector

This detector can implement span calibration when needed. Below is the guideline.

1.   Calibrate the detector at least once every 180 days depending on the use and sensor exposure to poisons and contaminants.

2.   Calibrate the detector if the ambient gas display varies at startup.

3.   Calibrate only in a clean atmosphere, which is free of H2S gas.

Calibration Menu

Alarm

Low Alarm and High Alarm

XAR-H has two alarm set points: High Alarm (H2S: 15 PPM) and Low Alarm (H2S: 10 PPM).These set points are factory set and cannot be changed. XAR-H is equipped with audio alarms to alert you when the ambient gas concentration exceeds one of the two alarm set points. When H2S value exceeds the defined high alarm set point (15 PPM), the audio alarm will sound at 3 beeps/sec. When H2S value exceeds the defined low alarm set point (10 PPM) but less than the defined high alarm set point (15 PPM), the audio alarm will sound at 2 beeps/sec.

Factory Alarm Set points

Specifications

H2S Sensor Specification:

Temperature Specification

RH Specification

General Specification

Out of range of operating conditions will impact the accurate of H2S measurement.

Maintenance

To maintain the detector in good operating condition, perform the following basic maintenance as required.

1.        Calibrate and inspect the detector at regular intervals.

2.        Clean the exterior with a soft damp cloth. Do not use solvents, soaps, or polishes.

3.        Do not immerse the detector in liquids.

Hydrogen Sulfide Levels and Health Effects