Hydrogen Sulfide (H₂S) Gas Sensors

SemeaTech, a world leader in sensing technologies, offers a full line of electrochemical sensors for detecting hazardous materials and gases for work safety and environmental protection. SemeaTech has built a wide network of industry experts and technologists to provide the company with guidance for... [See More]

• Gas Types: H₂S (0-100 ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

Senscient open path gas detector ensures best in class false alarm rejection. The Senscient ELDS laser-based open path gas detector is available for a wide range of toxic and flammable gases. The Senscient ELDS uses 'SimuGas' self-testing to eliminate employees entering hazardous areas for gas... [See More]

• Gas Types: Toxic; NH₃; CO₂; HCl; HF; H₂S; Methane (CH₄) / Natural Gas
• Number of Gases Monitored: Single; Multi (optional feature)

• Sensor Technology: Enhanced Laser Diode Spectroscopy
• Measurement Type: %Volume

The Dynament FGD14 series consists of standalone gas detectors featuring a front panel display that clearly shows the gas concentration level. These detectors are equipped with two control relays, which can be triggered based on user-defined alarm set points, allowing the relay contacts to control... [See More]

• Gas Types: Toxic; CO₂; CO; Cl₂; H₂S; O₂; SO₂
• Operating Temperature: 14 to 104

• Sensor Technology: NDIR Infrared or Electrochemical
• Operating Humidity: 0 to 95

Model SA2-H2S smart sensor modules are designed to detect and monitor hydrogen sulfide gas in ambient air. The modules consist of an electrochemical gas detection sensor and a micro-processor-based signal conditioning circuit. The signal conditioning circuits includes embedded temperature... [See More]

• Gas Types: Combustible; H₂S (0-1.00 ppm to 0-1,000 ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

The Acme GasPost toxic gas sensor/transmitter measures the concentration of the target gas in an enclosed area and produces a proportional analog output signal. ​. The 4-20mA transmitter is designed for standard 2-wire loop-powered operation where the output is supplied via the same pair of... [See More]

• Gas Types: Toxic; Combustible; NH₃ (0-100 PPM); CO (0-200 PPM); Cl₂ (0-5 PPM); H₂ (0-1000 PPM); H₂S (0-200 PPM); NO₂ (0-10 PPM); O₂ (0-25 %); SO₂ (0-10 PPM)
• Number of Gases Monitored: Multi

• Sensor Technology: Electrochemical
• Measurement Type: Trace

The ACME Wireless MultiSet series is a microprocessor-based multipoint multigas wireless detection and control system that can be used with the wireless CO and NO2 GasPost sensors. The communication between the Control Panel and the remote GasPost sensor/transmitters is accomplished through a 900... [See More]

• Gas Types: Toxic; Combustible; CO₂; CO; Refrigerants; Hydrocarbons; H₂; H₂S; NO₂; O₂
• Number of Gases Monitored: Multi

• Sensor Technology: Catalytic (optional feature); Electrochemical (optional feature); Infrared (optional feature)
• Measurement Type: Trace

The Acme WS GasPost Series toxic or combustible gas sensor/transmitter measures the concentration of the target gas in an enclosed area and transmits this value to the control panel via a 900MHz or 2.4 GHz wireless medium. The WS Wireless GasPost Sensor / Transmitter includes a high gain antenna... [See More]

• Gas Types: Toxic; Combustible; NH₃ (0-100 PPM); CO (0-200 PPM); Hydrocarbons (0-40% LEL); H₂ (0-1000 PPM); H₂S (0-200 PPM); NO₂ (0-10 PPM); O₂ (0-25%)
• Number of Gases Monitored: Multi

• Sensor Technology: Catalytic (optional feature); Electrochemical (optional feature)
• Measurement Type: %LEL or %LFL; Trace

The CommonSensor allows the user control over the cost of sensor use. By having the ability to replace sensor elements and flame arrestors, instead of the whole sensor, the user can keep the system operational with less expenditure for spares and labor. [See More]

• Gas Types: Toxic; Combustible; H₂S (0-50ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

CONSPEC's CN Series is an economical choice for toxic, combustible, and Oxygen gas monitoring. The CN Series is a simple and "smart" gas detector. An industry standard 4-20mA Analog output signal can be connected to any existing PLC, DCS, or EMS system. A simplified calibration procedure allows for... [See More]

• Gas Types: Toxic; Combustible; H₂S
• Number of Gases Monitored: Single

• Sensor Technology: Catalytic; Electrochemical; Infrared; PID; Thermal Conductivity
• Measurement Type: Trace

The petrochemical, gas processing, and gas pipeline industry has required an accurate and dependable, low maintenance and cost-effective CO2 analyzer for quality and process control purposes. Analytical Systems International has met these requirements with their proven microprocessor based non... [See More]

• Gas Types: Toxic; H₂S
• Number of Gases Monitored: Single

• Sensor Technology: Infrared
• Measurement Type: Trace

Rainwise offers customized turnkey weather monitoring solution. [See More]

• Gas Types: Toxic (optional feature); Combustible (optional feature); NH₃ (Contact Factory); AsH₃ (Contact Factory); Br₂ (Contact Factory); CO (Contact Factory); Cl₂ (Contact Factory); ClO₂ (Contact Factory); B₂H₆ (Contact Factory); F (Contact Factory); GeH₄ (Contact Factory); H₂ (Contact Factory); HCl (Contact Factory); HCN (Contact Factory); HF (Contact Factory); H₂Se (Contact Factory); H₂S (Contact Factory); NO (Contact Factory); NO₂ (Contact Factory); O₂ (Contact Factory); O₃ (Contact Factory); PH₃ (Contact Factory); SiH₄ (Contact Factory); SO₂ (Contact Factory)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: %LEL or %LFL; Trace

Model PT395-H2S is a microprocessor-based sensor designed to detect hydrogen sulfide in parts per million (ppm) level. The unit features easy one-man calibration initiated by simply activating a magnetic switch and applying the gas. The complete sensor consists of a stainless steel sensor head... [See More]

• Gas Types: H₂S (0-100ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

The GDS-49 is a two-wire loop-powered 4-20mA sensor transmitter designed to detect a wide range of toxic gases at ppm levels. The current loop output is compatible with the C1 Protector, C2 Protector, C2 Quad Protector or C64 Protector Controllers, the GASMAX II or GASMAX CX gas monitors or any... [See More]

• Gas Types: Toxic; Combustible; NH₃ (0-100 ppm); AsH₃ (0-1 ppm); CO (0-300/1000 ppm); Cl₂ (0-5/50 ppm); ClO₂ (0-1 ppm); F (0-1 ppm); H₂ (0-2000 ppm); HCl (0-30 ppm); HCN (0-50 ppm); HF (0-10 ppm); H₂S (0-50/100 ppm); NO (0-100/500 ppm); NO₂ (0-5/50 ppm); O₂ (0-25%); O₃ (0-1 ppm); SiH₄ (0-50 ppm); SO₂ (0-20/100 ppm) (COCI2 0-1ppm N2H4 0-1ppm TBM 0-14ppm)
• Number of Gases Monitored: Multi

• Sensor Technology: Electrochemical
• Measurement Type: %LEL or %LFL (optional feature); Trace (optional feature)

The Det-Tronics Nanotechnology Metal Oxide Semiconductor (NTMOS) gas detector delivers fast and repeatable H2S detection in extreme temperature and humidity applications where electrochemical sensing technologies are not preferred. The NTMOS H2S detector uses the latest nanotechnology to ensure... [See More]

• Gas Types: Toxic; H₂S (0-100 ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Infrared
• Measurement Type: Trace

The Sensepoint XCD transmitter provides comprehensive monitoring of combustible, toxic and Oxygen gas hazards in potentially explosive atmospheres, indoors and outdoors —and is marked by installation ease and flexibility, user-friendly operation and cost-effective gas monitoring. Sensepoint... [See More]

• Gas Types: Toxic; Combustible; NH₃ (0-50PPM); CO (0-200 PPM / 0-500 PPM); Cl₂ (0-5 PPM / 0-15 PPM); Hydrocarbons (0-100% LEL); H₂ (0-1000 PPM); H₂S (0-50 PPM / 0-100 PPM / 0-20 PPM); NO₂ (0-10 PPM); O₂ (0-25% VOL); SO₂ (0-15 PPM / 0-50 PPM)
• Number of Gases Monitored: Single

• Sensor Technology: Catalytic; Electrochemical
• Measurement Type: %LEL or %LFL; %Volume; Trace

Complete, easy-to-use sampling and analysis system. Detects and measures hazardous gases and vapors. Certified by the Safety Equipment Institute (SEI). Ideal for monitoring performance of Terra Exhaust Purification Filters. The most cost effective solution to air sampling and analysis. This Toxic... [See More]

• Gas Types: Toxic; H₂S (50 to 2000 PPM)
• Number of Gases Monitored: Single

• Sensor Technology: Colorimetric Stain
• Measurement Type: Trace

The SP3-AQ2 series is a tin dioxide semiconductor gas sensor which has an excellent sensitivity to various air pollution sources (e.g. VOCs) with quick response speed. This sensor uses a compact plastic housing with 3 pins configuration achieving a wide applicability in various design of applied... [See More]

• Gas Types: Combustible; NH₃ (3-30ppm); CO (10-100ppm); H₂ (1-100ppm); H₂S (1-10ppm) (Ethanol)
• Number of Gases Monitored: Multi

• Sensor Technology: Semiconductor
• Measurement Type: Trace

Reliable, open path detection of hydrogen sulfide at levels low enough to protect personnel from the toxic hazard. Faster response than any other hydrogen sulfide detection technology. No need to replace or re-calibrate sensors. True ease-of-installation, with vibration and misalignment tolerant... [See More]

• Gas Types: Combustible; H₂S (0-1000ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Infrared; Enhanced Laser Diode Spectroscopy
• Measurement Type: %LEL or %LFL; Trace; Leakage; Signature

This multi-component QCL represents the next generation of gas analyzers and sensors, with the ability to measure up to 20 gases and an interchangeable modular configuration for up to 9 lasers. An embedded ARM processor gives fully autonomous intelligent operation. Key Features/Benefits: Measure up... [See More]

• Gas Types: Combustible; NH₃ (0-4000 ppm); CO₂ (0-30%); CO (0-20000 ppm); Hydrocarbons (0-200 ppm); HCl (0-2000 ppm); HF (0-50 ppm); H₂S (0-50000 ppm); Methane (CH₄) / Natural Gas (0-20000 ppm); NO (0-10000 ppm); NO₂ (0-2000 ppm); N_xO_x (0-10000 ppm); O₂ (0-100%); SO₂ (0-4000 ppm); Water Vapor (0-40%) (Formaldehyde 0-100ppm, Hydrogen Peroxide 0-800ppm, Methanol 0-120 ppm, Nitromethane 0-120ppm)
• Number of Gases Monitored: Multi

• Sensor Technology: Infrared
• Measurement Type: %Volume; Trace

G-TECTA ™ SG is a fully functional premium single gas instrument, water and dust resistant, with one button operation and a choice of 28 sensors to suit almost every application. The lightweight and robust design combined with full download and data logging capability offers the ideal single... [See More]

• Gas Types: Toxic; Combustible; NH₃; CO₂; CO; Cl₂; ClO₂; Hydrocarbons; H₂; HCN; HF; H₂S; Methane (CH₄) / Natural Gas; NO; NO₂; O₃; PH₃; SO₂
• Measurement Type: %LEL or %LFL

• Number of Gases Monitored: Single
• Operating Temperature: -4 to 149

Detector tubes provide fast, economical monitoring for a wide variety of target gases and vapors. Their direct reading capability provides on-the-spot results eliminating laboratory turnaround time. The tubes are typically calibrated in one of three commonly used units of concentration. [See More]

• Gas Types: Toxic; Combustible; H₂S (100 cf)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical; Gas Chromatography
• Measurement Type: Trace

Hydrogen Sulfide, solid state aluminum [See More]

• Gas Types: Combustible; H₂S
• Number of Gases Monitored: Single

• Sensor Technology: Semiconductor

CONSPEC Controls Multi-Channel Controller is a microprocessor-based multi-analog input controller. The P2259/60 was designed to be an independent stand-alone controller but can integrate into any type of data acquisition system. The Controller can provide up to eight channels of remote monitoring... [See More]

• Gas Types: Combustible; Aerosols; NH₃; AsH₃; Br₂; CO₂; CO; Cl₂; ClO₂; B₂H₆; F; GeH₄; Refrigerants; Hydrocarbons; H₂; HCl; HCN; HF; H₂Se; H₂S; NO; NO₂; O₂; O₃; PH₃; SiH₄; SO₂; SF₆
• Number of Gases Monitored: Multi

• Sensor Technology: Catalytic; Electrochemical; Infrared; PID; Thermal Conductivity
• Measurement Type: %LEL or %LFL; %Volume; Trace

The petrochemical, gas processing, & gas pipeline industry has for many years required an accurate, dependable, low maintenance, and cost effective sulfur analyzer for quality and process control purposes. With over twenty years of experience in developing and manufacturing sulfur analyzers and... [See More]

• Gas Types: Toxic; H₂S
• Number of Gases Monitored: Single

• Sensor Technology: Lead Acetate Tape/Photodiode-LED
• Measurement Type: Trace

Model PT205 sensor is designed to detect Hydrogen Sulfide in air and provides an analog output signal. PT205 uses electrochemical cell technology to detect H2S in parts per million (ppm). The complete sensor consists of a stainless steel sensor head assembly, a user connection board and a... [See More]

• Gas Types: H₂S (0-100ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

The Det-Tronics GT3000 line of electrochemical fixed-point toxic-gas detectors provides continuous monitoring of the atmosphere for potentially hazardous toxic gas leaks or oxygen depletion. The GT3000 family currently includes sensors that detect each of the following gases (additional gases added... [See More]

• Gas Types: Toxic; NH₃ (0-100ppm); CO (0-500ppm); Cl₂ (0-10ppm); H₂S (0-50 ppm; 0-100 ppm); O₂ (0-25%); SO₂ (0-20 ppm)
• Number of Gases Monitored: Multi

• Sensor Technology: Electrochemical
• Measurement Type: %Volume; Trace

Highest performance fixed flammable and toxic gas detector with a choice of communication outputs, accessories and installation flexibility. Apex takes the best elements of gas detection design and combining them into one unit. Apex provides the highest performance, installation flexibility, a wide... [See More]

• Gas Types: Toxic; Combustible; NH₃ (0-50 PPM / 0-1000 PPM); AsH₃ (0-0.2 PPM); Br₂ (0-0.4 PPM); CO (0-100 PPM / 0-500 PPM); Cl₂ (0-2 PPM / 0-15 PPM); ClO₂ (0-0.4 PPM); B₂H₆ (0-0.4 PPM); F (0-4 PPM); GeH₄ (0-0.8 PPM); Hydrocarbons (0-100% LEL); H₂ (0-1000 PPM); HCl (0-20 PPM); HCN (0-20 PPM); HF (0-12 PPM); H₂S (0-15 PPM / 0-100 PPM); NO (0-100 PPM); NO₂ (0-12 PPM); O₂ (0-21 % v/v); O₃ (0-4 PPM); PH₃ (0-1.2 PPM); SiH₄ (0-20 PPM); SO₂ (0-8 PPM / 0-50 PPM) (Many other toxic gases- see datasheet)
• Number of Gases Monitored: Multi

• Sensor Technology: Catalytic; Electrochemical
• Measurement Type: %LEL or %LFL; %Volume; Trace

G-TECTA ™ 4GP is an extremely robust 4 gas instrument with built in pump and charger. The single button operation and full data management allows the users to effectively manage their gas detection requirements with confidence. G-TECTA 4GP has infrared communication, full functional capability... [See More]

• Gas Types: Toxic; Combustible; NH₃; CO; Cl₂; H₂; HCN; HF; H₂S; Methane (CH₄) / Natural Gas; NO; NO₂; O₂; O₃; PH₃; SO₂
• Measurement Type: %LEL or %LFL

• Number of Gases Monitored: Multi
• Operating Temperature: -4 to 131

Minimum Indicated Concentration .............. 4 ppm. Repeatability .............................................. ± 2% of reading. Accuracy * ................................................. ± 2% of full scale. Zero Drift ................................................... < 5%... [See More]

• Gas Types: Toxic; Combustible; H₂S (0-100ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

CONSPEC's Single Channel Controllers are single point monitoring and control processors, which are housed in a NEMA 4-4X weatherproof non-metallic enclosure and are designed to monitor and display any voltage or current input signal from any instrument, including CONSPEC's EZ-CAL Toxic and... [See More]

• Gas Types: Toxic; Combustible; Aerosols; NH₃ (0-50, 100, 200, 500ppm); AsH₃; Br₂ (0-10ppm); CO₂ (0-2000ppm, 10000ppm 0-2%, 0-5%, 0-100%); CO (0-50, 100, 200, 500, 1000, 10000, 50000); Cl₂ (0-10, 20ppm); ClO₂ (0-5 ppm); B₂H₆; F; GeH₄; Refrigerants; Hydrocarbons (0-100% LEL or 0-100% Vol.); H₂ (0-2000, 10,000ppm 0-4%); HCl (0-25, 100, 150ppm); HCN; HF; H₂Se; H₂S (0-25, 50, 100, 200ppm); NO (0-50, 100ppm); NO₂ (0-20ppm); O₂ (0-25, 100%); O₃ (0-2, 5ppm); PH₃; SiH₄; SO₂ (0-10, 100, 1000, 2000ppm); SF₆
• Number of Gases Monitored: Single

• Sensor Technology: Catalytic; Electrochemical; Infrared; PID; Thermal Conductivity
• Measurement Type: %LEL or %LFL; %Volume; Trace

The petrochemical, gas processing, and gas pipeline industry has required an accurate and dependable, low maintenance and cost-effective H2S analyzer for quality and process control purposes. With over thirty years of experience in developing and manufacturing gas analyzers and associated parts and... [See More]

• Gas Types: Toxic; H₂S
• Number of Gases Monitored: Single

• Sensor Technology: Lead Acetate Tape/Photodiode-LED
• Measurement Type: Trace

Model PT295-H2S is a microprocessor-based sensor designed to detect hydrogen sulfide in parts per million (ppm) level. The unit features easy one-man calibration initiated by simply activating a magnetic switch and applying the gas. The complete sensor consists of a stainless steel sensor head... [See More]

• Gas Types: H₂S (0-100ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

Remotely monitor toxic gases in Class 1, Div 2 areas while reducing the maintenance, training and overall cost of gas monitoring. Sensepoint XCD RTD from Honeywell Analytics makes it easy on your maintenance team, time and budget when faced with the challenge of monitoring toxic gases in Class I,... [See More]

• Gas Types: Toxic; NH₃ (0-50 PPM); CO (0-200 PPM); Cl₂ (0-5 PPM); H₂S (0-50 PPM); NO (0-100 PPM); NO₂ (0-10 PPM); O₂ (0-25%); SO₂ (0-15 PPM)
• Measurement Type: %Volume; Trace

• Number of Gases Monitored: Multi
• Electrical Outputs: Voltage; Current

The G-TECTA ™ 4G is a rugged, compact and easy to use 4-gas instrument with full data management and operator functionality. With 14 sensor options, one button operation and a robust water and dust resistant ergonomic casing, G-TECTA 4G is the ideal confined space entry monitor. The instrument... [See More]

• Gas Types: Toxic; Combustible; NH₃; CO₂; CO; Hydrocarbons; H₂; H₂S; Methane (CH₄) / Natural Gas; O₃; SO₂
• Measurement Type: %LEL or %LFL

• Number of Gases Monitored: Multi
• Operating Temperature: -4 to 131

Smart Sensor Technology enables SensAlertPlus to automatically recognize and configure to the gas type and range of the sensor, using the latest calibration data. The Predictive Sensor Failure (PSF) function provides warning of approaching sensor end-of-life. Non-volatile memory stores calibration... [See More]

• Gas Types: Toxic; Combustible; H₂S (0-100ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

CONSPEC Controls Multi-Channel Controller is a microprocessor-based multi-analog input controller. The P2260 was designed to be an independent stand-alone controller but can integrate into any type of data acquisition system. The Controller can provide up to sixteen channels of remote monitoring and... [See More]

• Gas Types: Combustible; Aerosols; NH₃; AsH₃; Br₂; CO₂; CO; Cl₂; ClO₂; B₂H₆; F; GeH₄; Refrigerants; Hydrocarbons; H₂; HCl; HCN; HF; H₂Se; H₂S; NO; NO₂; O₂; O₃; PH₃; SiH₄; SO₂; SF₆
• Number of Gases Monitored: Multi

• Sensor Technology: Catalytic; Electrochemical; Infrared; PID; Thermal Conductivity
• Measurement Type: %LEL or %LFL; %Volume; Trace

The regulated d.c. power supply provides a constant standing voltage. The gas diffuses through a porous filter and contacts the surface of the sensor element. A change in resistance occurs that is proportional to the concentration at gas applied. This signal is then amplified and sent to the... [See More]

• Gas Types: Toxic; Combustible; CO₂; CO; Cl₂; H₂S; O₂; SO₂
• Number of Gases Monitored: Multi

• Sensor Technology: Catalytic; Electrochemical
• Measurement Type: %LEL or %LFL

Ultra 1000 series is a microprocessor based addressable sensor for detection of Hydrogen Sulfide in ambient air. The self- contained sensor features user friendly interface and menu driven calibration procedure and configuration. The complete sensor consists of a stainless steel sensor head... [See More]

• Gas Types: H₂S (0-100ppm)
• Number of Gases Monitored: Single

• Sensor Technology: Electrochemical
• Measurement Type: Trace

ATEX certified flammable, toxic and Oxygen gas detectors offering a low cost solution to hazardous area monitoring. The Sensepoint range of flammable, toxic and Oxygen gas detectors offer users a high quality, low cost solution to their industrial gas monitoring needs. Installation in potentially... [See More]

• Gas Types: Combustible; NH₃ (0-50 PPM / 0-1000 PPM); CO (0-200 PPM / 0-500 PPM); Cl₂ (0-5 PPM / 0-15 PPM); Hydrocarbons (0-100% LEL); H₂ (0-1000 PPM); H₂S (0-20 PPM / 0-50 PPM/ 0-100 PPM); NO₂ (0-10 PPM); O₂ (0-25% VOL); SO₂ (0-15 PPM / 0-50 PPM)
• Number of Gases Monitored: Single

• Sensor Technology: Catalytic
• Measurement Type: %LEL or %LFL; Trace

The G-TECTA ™ SG2 instrument offers the user a simple to use, low maintenance disposable gas detector with a warranted 2 year life. Designed to resist the most arduous environments and to be used with basic training, the G-TECTA SG2 is ideal for contract work and where limited functionality is... [See More]

• Gas Types: NH₃; CO; Cl₂; H₂S; O₂; SO₂
• Operating Temperature: -4 to 122

• Number of Gases Monitored: Single
• Operating Humidity: 5 to 95