Hydrogen Sulfide Gas Detector

$2,170.00

Product Summary

The PureAire Hydrogen Sulfide Fixed Gas Detector is designed for continuous, real-time monitoring of hydrogen sulfide (H₂S), ensuring safe working conditions in water treatment facilities and similar environments. The system uses a dedicated electrochemical sensor calibrated in parts-per-million (ppm) to deliver accurate leak detection and immediate alerts.

Hydrogen sulfide is a common byproduct in water treatment processes such as wastewater treatment, sludge digestion, and industrial water processing. Due to its high toxicity and characteristic “rotten egg” odor, even low levels of H₂S can pose severe health hazards to personnel. Continuous monitoring is crucial in these environments to protect workers, prevent equipment corrosion, and ensure regulatory compliance.

PureAire’s H₂S sensors are engineered for long-term durability—lasting up to 8 years under normal conditions—and feature the benefit of being user-rechargeable on-site with electrolyte replacement, which helps lower maintenance costs and reduce downtime.

For water treatment plants and related industrial processes, PureAire delivers a robust, low-maintenance gas detection system that not only safeguards personnel and equipment but also supports efficient, compliant operations.

Please note that because of the nature of this product, the lead time is typically 2-3 days but may be up to one week. We will make every effort to ship your order as soon as possible.

Gas Range

Clear

Transmitter connects to any PureAire toxic or corrosive gas sensor
Plug & play sensor sets the transmitter gas & measurement range
Dual-level user-adjustable alarm relays
4- 20mA analog output (Active)
Built-in horn & visual alarm LEDs
Electronics continuously check the sensor & system status
Low-cost, long-life renewable sensor
Quick, easy sensor calibration
Optional remote cable for monitoring up to 30 feet from the transmitter
Connects to PLC or SCADA controller
UL, CUL, and CE Approvals
24V DC Power supply included
Available without a built-in horn – 99065. Please contact PureAire for ordering information: 847-726-6000

The PureAire Hydrogen Sulfide Gas Detector is a compact gas monitor that’s ideal for protecting workers from hydrogen sulfide gas exposure in the workplace. It consists of a transmitter/controller connected to a dedicated, renewable gas hydrogen sulfide sensor that automatically inputs the gas and measurement range. Designed as a stand-alone monitor, the Hydrogen Sulfide Gas Detector can also be connected to any programmable logic controller or SCADA system. PureAire also manufactures toxic gas detectors with a remote sensor.

The heart of the Hydrogen Sulfide Gas Detector is a smart, renewable sensor cell programmed with gas and measurement range information. When servicing the sensors, they can be recharged with fresh electrolyte and dynamically gas-calibrated in the maintenance shop away from the transmitter.

Sampling Method	Diffusion. (Optional: sensor can be remote up to 30 feet from the transmitter)
Other Available Gases	ammonia, bromine, chlorine, fluorine, hydrogen bromide, hydrogen chloride, hydrogen cyanide, hydrogen fluoride, hydrides, hydrazine, nitrogen dioxide, phosphine, and sulfur dioxide. For additional gases not listed here, please contact PureAire.
Accuracy	± 10% of full scale
Operating Temperature	-25 to +122F (-32 to +50C)
Sensor Type	Renewable electrochemical self-checking sensor with built-in microprocessor
Sensor Life	3 to 8 years under normal conditions
Gas concentration indicator	Built-in LCD digital display, (backlit) Displays: Gas Name & ppm concentration, AL1, AL 2, System Fault messages.
Signal Outputs	4-20 mA analog output (Active), Dual Level Alarm Relay Contacts
Power Requirements	24 VDC, .25 amp Regulated power supply required
Dimensions	5.12(W) x 8.25 (H) x 3.20 (D) inches; (120 x 209 x 81 mm)
Weight	1.2 lbs. (.5 kg)
Enclosure	Polycarbonate UL listed general-purpose, Optional NEMA 4X, IP 65 water-resistant (only available without built-in horn)
Country of Origin	USA
Harmonized Tariff Code	8531.10.0045

Maximize Safety, Minimize Costs

The PureAire Hydrogen Sulfide (H₂S) Gas Detector delivers powerful protection at a fraction of the long-term cost. With the lowest annual maintenance expenses in the industry, this detector features a renewable sensor that can be recharged in the field, eliminating the need for costly disposable sensor cells. At just 20% of the price of replacement cells, and with annual maintenance materials averaging $70, the savings can add up to hundreds of dollars each year.

Hassle-Free, Stand-Alone Monitoring

No need for complex integration—this gas detector is ready to protect right out of the box. Simply mount it near the risk zone, plug it into a standard 115VAC or 220VAC outlet, and begin monitoring H₂S levels instantly. The unit’s built-in horn and LED alarms provide fast, clear alerts in the event of a gas leak. For added control, individual alarm and fault relays allow connection to external alarms or systems, and the 4–20mA output ensures seamless data transmission to your PLC or SCADA systems.

Smart, Reliable Performance 24/7

Backed by intelligent, continuously supervised electronics, the Hydrogen Sulfide Gas Detector keeps your safety systems online around the clock. Should a fault occur, the analog output and fault relay instantly alert your control room to the issue. Plus, a dedicated microcontroller embedded in the sensor allows off-unit calibration, simplifying maintenance. Once reconnected, calibration data is automatically synced with the transmitter, keeping your operations running smoothly and safely.

Universal Gas Detector Literature

Universal Gas Detector Manual

Explosion-Proof EPU Gas Monitor Literature

Comparison PMS vs Disposable 1 pt

List of Gases We Can Detect