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Alphasense Hydrogen Sulfide sensors operate using well-known fuel cell technology. The H2S-A series sensors are designed for continuous use between -30C and +50C, making H2S-A1 ideal for Oil and Gas/Petrochemical applications in adverse climatic conditions.
The H2S-A offers our leak free guarantee and good, reliable detection performance. The leakproof housing is moulded in colour coded plastic for ease of identification.
Our unique ATAV test and validation system enables us to perform customised testing to customer requirements. A record of each sensor's performance is stored in our database, accessible via the sensor barcode, available as hard copy evidence and as a powerful diagnostic tool.
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gas sensor
- Aperometric 3 electrode sensor element
- Fast response
- High reliability
description
Sensor for measuring hydrogen sulphide gas
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Alphasense Hydrogen Sulfide Miniature sensors operate using well known fuel-cell technology. The Alphasense H2S-D series offers our unique leak-free guarantee and superior detection performance all in a diameter of 14.5mm. Only its size is reduced, not its performance or guaranteed life. The leakproof housing is colour coded for ease of identification.
As with all other Alphasense sensors, the use of stabilisation racks to continuously monitor every sensor during initial conditioning ensures that only sensors operating within specification are passed to the companies unique ATAV (Alphasense Test and Validation) system. This also enables us to perform customised testing to customer requirements. The key operating characteristics for every sensor are recorded against the sensor serial number, which is bar coded onto the sensor. This data can be released at the time of despatch so that full traceability is maintained.
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The FCM6812 combustible gas sensor module is a new
unit which utilizes TGS6812, Figaro's catalytic pellistor
type gas sensor which features durability, stability, and
quick gas response. Calibrated under strictly controlled
environmental conditions at Figaro's factory, this module
provides analog output voltage proportional to hydrogen
gas concentration. FCM6812 is resin coated for
waterproofing and electrical insulation purposes, and also
is also capable of detecting sensor wire breakage. The
unit has a wide range of operating temperature from -10°
to +60°C.
Because the TGS6812 sensor can detect methane and
LP gas as well as hydrogen, this module is suitable for
gas leak detection in stationary fuel cells which use
hydrogen generated from combustible gases.
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TGS821 Semiconductor type
Figaro semiconductor type sensor TGS821 has high sensitivity to low concentrations of hydrogen. Even at 100ppm of hydrogen, the sensor can detect the target gas with good repeatability and long term stability. Figaro's unique sensor technology makes this sensor highly selective to hydrogen. TGS821 utilizes a durable ceramic housing that makes it ideal for industrial applications which involve transformer maintenance or usage of batteries. This sensor is also appropriate for checking gas leakage within a fuel cell system.
TGS6812 Catalytic type
Figaro's catalytic type sensor TGS6812 can detect levels of hydrogen up to 100%LEL. This sensor features high accuracy, good durability and stability, quick response, and linear output. This sensor can detect not only hydrogen but also methane and LP gas, making it an excellent solution for monitoring gas leakage from stationary fuel cell systems which use hydrogen that is transformed by combustible gases. Due to an adsorbent inside its sensor cap, the cross sensitivity of TGS6812 to alcohol is much smaller than can be found in traditional catalytic type sensors. In addition, TGS6812 is more durable against silicone compounds than the traditional catalytic type sensors.
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SENSOR FEATURES:
- High selectivity to hydrogen
- Low power operation LEL hydrogen detection (1000 ppm - 2%)
- Can be operated at room temperature (no heater power consumption)
- Can be used for ppm hydrogen detection (50 - 1000 ppm) at higher operating
temperature and power (150°C/275 mW)
- Environmental humidity range of 0 - 90%, non-condensing
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SENSOR FEATURES:
- Sensor designed to reliably detect H2S at concentrations from 1-100 ppm.
- Rugged sensor undamaged by exposure to temperature and humidity extremes.
- Fast response and complete recovery after H2S exposure.
- Large, stable, easy to measure resistance change on exposure to H2S.
- Preliminary studies indicate sensor response is stable (does not go to sleep).
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Cross sensitivity to H2, > 4%
Sensitivity nA/ppm in 400ppm CO 55 to 85
Response time t90 (s) from zero to 800ppm CO < 45
Zero current ppm equivalent in zero air < ± 2
Resolution RMS noise (ppm equivalent) < 1
Range ppm CO limit of performance warranty 2,000
Linearity ppm error at full scale, linear at zero and 800ppm CO < ± 40
Overgas range maximum ppm for stable response to gas pulse 4,000
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H2scan’s HY-ALERTA™ 600 Fixed Area Hydrogen Monitor provides hydrogen-specific leak detection and measurement for hydrogen concentrations as low as 4000ppm and can be scaled to any concentration up to 5% hydrogen by volume, a range representing 10% to 125% of hydrogen’s low flammability limit. The monitor is
designed for either ceiling or wall mount and has an RS422 capability that extends the interface from the sensor to the controller to several hundred feet. H2scan's hydrogen-specific sensor technology has no cross sensitivity to other combustible gases, thus eliminating false positive alarms and ensuring safety system reliability.
Performance
Hydrogen Sensitivity Range:
0.4% to 5.0% hydrogen by volume
10% to 125% hydrogen lower flammable limit
Accuracy: ± (3.0% of indication + 2000ppm)
Typical Response Time: T90 less than 30 sec
Ingress Protection: IP64 capable
Calibration Interval: 90 days
Product Life Expectancy: 10 years
Interface Options
Input Voltage Range: 8VDC to 13VDC
Input Current: 0.5A
Analog Outputs:
Output Voltages - OR - Output Currents
• 0VDC to 5VDC • 4mA to 20mA
• 1VDC to 5VDC • 0mA to 20mA
• 0VDC to 4VDC • User-specific mA range
• 0.5VDC to 4.5VDC
• User-specific VDC range
Serial Communication Options: RS232 or RS422
Relay Contacts: Two programmable 60VDC/1A
SPDT relays with both normally open (N.O.)
and normally closed (N.C.) contacts.
Operating Conditions
Operating Temperature Range: -20ºC to 40ºC
Storage Temperature Range: -40ºC to 50ºC
Operating Humidity: 0% to 95% RH
Calibration Background Gas: Air
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H2scan’s HY-ALERTA™ 1600 Intrinsically Safe Area Hydrogen Monitor provides hydrogen-specific leak detection and measurement for hydrogen concentrations as low as 4000 ppm and can be scaled to any concentration up to 5% hydrogen by volume, a range representing 10% to 125% of hydrogen’s low flammability limit. H2scan's hydrogen-specific sensor technology has no cross sensitivity to other combustible gases, thus eliminating false positive alarms.
Performance
Hydrogen Sensitivity Range:
0.4% to 5% hydrogen by volume
10% to 125% hydrogen lower flammable limit
Accuracy: ± (0.03 x indication + 0.2) percent hydrogen by volume
Typical Response Time: T90 of 60 sec maximum
Ingress Protection: IP64 capable
Calibration Interval: 90 days
Product Life Expectancy: 10 years
Interface Options
Power Barrier Input Voltage: 24 VDC nominal
Power Barrier Input Voltage Range: 20 VDC to 28 VDC
Intrinsically Safe Sensor Input Voltage: 10 VDC
Sensor Input Voltage Range: 5 VDC to 28 VDC
Input Power: 10 W
Analog Outputs: 4 mA to 20 mA
Serial Communication: RS422
Operating Conditions
Operating Humidity: 0% to 95% RH
Operating Temperature Range: -20ºC to 40ºC
Storage Temperature Range: -40ºC to 50ºC
Calibration Background Gas: Air
Included Accessories
Intrinsically Safe Power Barrier
4 m Power / Analog Cable
Optional Accessories
Intrinsically Safe Analog Output Barrier
Intrinsically Safe Serial Interface Barrier
4 m RS422 Serial Interface Cable
Dimensions
Total Length: 8.1 in.
Total Width: 4.4 in.
Depth: 1.6 in.
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PART # HGDI-DR (DUAL RELAY)
Hydrogen Gas Detector
Lead-acid storage batteries emit hydrogen while gassing during charge. Hydrogen concentration of 4% to 75% by volume in air are potentially explosive. Hydrogen gas detector is designed to provide for dissipation and warning before any concentration reaches the lower explosive limit (LEL) of 4%.
- 1% Concentration energizes a relay which activates your exhaust fan
- 2% Concentration activates a built-in, pulsating warning alarm
- One-Year Warranty
- 110V; 50/60 htz
- 220VAC or 12VDC available
- 7"h x 4 3/4"w - 2 1/2" deep
ADDITIONAL PARTS:
HGDI-REM - REMOTE - 25FT
HGDI-JB - JUNCTION BOX
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MILLENNIUM ELECTROCHEMICAL TOXIC GAS DETECTOR
Net Safety's toxic gas detector, the Millennium, delivers safety, security and performance - protection you can trust! Using the latest in electrochemical sensor technology, the Millennium continuously monitors your site for a wide range of toxic gas types. The Millennium is fast and accurate and requires only periodic calibration and maintenance.
Enclosed in a compact and explosion-proof housing, the Millennium features a power disconnect switch to simplify maintenance, a clearly visible scrolling LED display for calibration and configuration and meter jacks for easy current loop monitoring. The Millennium has both an internal push button and external magnetic switch for either intrusive or non-intrusive calibration and configuration.
The Millennium is designed for 12 or 24 VDC systems and is available with analog, relay and digital output configurations as well as a Low Power option- just let us know your requirements!
Net Safety has once again designed a simple yet precise toxic gas detector, engineered to the highest standards for performance and quality, and ideally suited to withstand the challenges imposed by high-risk industrial applications.
A full range of gases and custom configurations are available (ppm ranges etc.). Please consult our Sales Department.
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The S4100T Intelligent Sensor is a highly reliable, self-contained, microprocessor-controlled hydrogen sulphide transmitter with integral 3 digit readout. It is designed to measure and display concentrations of H2S in the 0-20 ppm, 0-50 ppm or 0-100 ppm range, but will continue to display concentrations up to 120% FSD. The sensing element may be incorporated in the transmitter housing or remotely mounted at distances of 600 meters. The sensor employs thin film metal oxide semiconductor (TFMOS) technology as the measuring principle.
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SIMTRONICS “TT63ES” detector is a semi-conductor sensor type with a very low cross sensitivity to other gas.
The basic principle is the resistance variation of a tin oxide semi-conductor. The inflammable gas reacts with the oxygen absorbed at the surface of the semi-conductor, and causes the electric resistance to decrease. The nature of the semi-conductor, its doping and its service temperature contribute to better detectivity of certain gases.
When other semiconductor on the market need to smell gas every week to avoid the sensor to fall asleep, the SIMTRONICSsemiconductor sensor only needs a six-month or one year calibration test.
Modern electronics provides high performance for humidity and temperature rate compensation and long term stability. The circuits ensuring the supply to the sensor, the amplifier and the interface are grouped in the flameproof enclosure onto which the detection probe is secured.
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H2scan’s Series 700 in-line hydrogen-specific process monitors are designed for ease of use, interface flexibility and true process control. The HY-OPTIMA™ 700 is a solid state sensor that can operate in humidity and process gas streams with temperatures up to 100ºC. The HY-OPTIMA™ 700 is ideal for hydrogen production and petrochemical applications where real time measurements of hydrogen can increase process plant efficiencies, improve diagnostics and enhance maintenance management translating into higher profitability.
Performance
Hydrogen Sensitivity Range:
0.5% to 100% hydrogen by volume at 1ATM
Typical Response Time: T90 less than 30 sec
Ingress Protection: IP64 capable
Calibration Interval: 90 days
Product Life Expectancy: 10 years
Accuracy: ± (3.0% of indication + 2000ppm)
Interface Options
Input Voltage Range: 8VDC to 13VDC
Input Current: 0.5A
Analog Outputs: 4-20mA
Serial Communication Options: RS232 or RS422
Relay Contacts: Two programmable 60VDC/1A
SPDT relays with both normally open (N.O.)
and normally closed (N.C.) contacts.
Operating Conditions
Operating Humidity: 0% to 95% RH
Flow Rate: 0.1slpm to 50slpm
Pressure: 0 to 7bar gauge, 0 to 100psi gauge
Process Gas Temperature Range: -20ºC to 100ºC
Operating Temperature Range: -20ºC to 40ºC
Storage Temperature Range: -40ºC to 50ºC
Calibration Background Gas: Nitrogen
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The analyser from ARELCO A.R.C. model CATARC MP - R integrates a sensor which works on the principle of thermal conductibility and a very powerful electronics with microprocessor. It is designed for monitoring and checking binary gas blending like H2/N2, He/N2, SF6/air, ...
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H-Sense
Hydrogen Gas Analyzer
One of industry's first, true, on-line hydrogen gas analyzers. By utilizing standard MS techniques, coupled with a unique gas handling system, the H-Sense is proven to be a powerful, high speed, direct emission, hydrogen gas analyzer.
The mobile analyzer boasts a number of advantages:
Electron Pulse Ionization (EIMS) mass spec principle optimized for H2 only analysis.
Fully integrated gas inlet system compensates for high pressure variations.
High dynamic detection range (low ppm to 100%), highest degree of flexibility, ruggedized for any industrial or laboratory process.
System contamination from particulate or condensation is eliminated
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The analyzers of line 4400 are suitable to being installed in rack cabinets 19 " or to panel, being placed on a job plan, and at last easy transportable thanks to a comfortable balancing handle.
They integrate the sensitive units and of control of the analyzers from process in an elegant aluminum structure and supply in continuous, with extreme precision, marks them proporziona them to variable the gaseous one wished.
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Hydrosteel 6000 is the ultimate portable monitoring tool for sour, HF and high temperature corrosion and diffusible hydrogen damage in steel.
The intrinsically safe instrument is totally non-intrusive and with minimal test surface preparation, and no consumables such as grease required, reliable measurements can be made within a minute.
Measurements can be taken from small pipes and large vessels, at any orientation and at any temperature up to 500 °C (932 °F), with a single probe.
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H2scan believes that protecting lives means being able to locate and find a hydrogen leak as quickly as possible. With two sensing elements on the same semiconductor die, the HY-ALERTA™ 500 can detect hydrogen leaks as
low as 15ppm and will not saturate or be destroyed when detecting concentrations of hydrogen up to 100%. The flexible cable allows the sensor probe access to virtually all potential leak sources.
Performance
Hydrogen Sensitivity Range:
15ppm to 100% hydrogen by volume
No peripheral equipment needed
Typical Response Time: less than 30 sec
Ingress Protection: IP64 capable
Field Verification/Calibration Period: 1 year
Product Life Expectancy: 10 years
Lithium Ion Battery Performance
Operating Time: 10hours
Charge Time: 4hours maximum with included charger
Operating Conditions
Operating Temperature Range: 0ºC to 45ºC
Storage Temperature Range: -20ºC to 45ºC
Operating Humidity: 0% to 95% RH
Calibration Background Gas: Air
Dimensions
Unit Weight: 2.15lbs, 975g
Total Length: 6.8in.
Total Width: 3.4in.
Depth: 1.4in.
Probe Length: 7.8in.
Probe Tip Diameter: 0.5in.
Probe Handle Diameter: 1.2in.
Coiled Cord Length Retracted: 26in.
Coiled Cord Length Extended: 72in.
Coiled Cord Diameter: 0.7in.
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H2scan’s HY-ALERTA™ 2600 Explosion Proof Area Hydrogen Monitor provides hydrogen-specific leak detection and measurement for hydrogen concentrations as low as 4000 ppm and can be scaled to any concentration up to 5% hydrogen by volume, a range representing 10% to 125% of hydrogen’s lower flammability limit. The monitor is designed for either ceiling or wall mount and has an RS422 capability that extends the interface from the Sensor Module to the Control Module to several hundred feet. H2scan's hydrogen-specific sensor technology has no cross sensitivity to other combustible gases, thus eliminating false positive alarms.
Performance
Hydrogen Sensitivity Range:
0.4% to 5.0% hydrogen by volume
10% to 125% hydrogen lower flammable limit
Accuracy: ± (0.03 x indication + 0.2) percent hydrogen by volume
Typical Response Time: T90 of 60 sec maximum
Ingress Protection: IP66
Calibration Interval: 90 days
Product Life Expectancy: 10 years
Interface Options
Input Voltage Range: 90 VAC to 260 VAC
Input Power: 15 W
Analog Output: 4 mA to 20 mA
Serial Communication: RS422
Relay Contacts: Two programmable 5 A, 250 VDC / VAC
SPDT relays with both normally open (N.O.) and
normally closed (N.C.) contacts
Operating Conditions
Operating Temperature Range: 4ºC to 60ºC
Storage Temperature Range: -40ºC to 50ºC
Calibration Background Gas: Air
HY-ALERTA™ 2600 Includes
Sensor Module
Control Module
Infrared Remote Control
Dimensions
Sensor Module
Width: 13.8 cm (5.4 in.)
Length: 19.3 cm (7.6 in.)
Depth: 13.0 cm (5.1 in.)
Control Module
Width: 13.8 cm (5.4 in.)
Length: 14.3 cm (5.6 in.)
Depth: 14.4 cm (5.7 in.)
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Ultra-fine leak detection method using a mixture of nitrogen and hydrogen
(5% H2 and 95% N2)
- Non-destructive testing,
- Leak detection,
- Sealing control,
- Leak localization,
- Object validation,
- Certification
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The H520, a new comer in the ATEQ range of Hydrogen leak detectors, is one of the finest gas tracer and leak detector on the market today.
The most cost effective solution when you desire to identify leaks in gr/year or
ppm, equipped with all features for easy integration.
Detection of leaking gas traces
Range: 5 ~ 100 ppm
The part is filled with hydrogen gas 5% in Nitrogen gas,
for localization, the leaking gas is attracted in a suction probe to the sensor
for fine leak detection, the leaking gas is first accumulated in a chamber,
then attracted to the sensor through the suction tube,
Traces of the leaking gas are detected by ATEQ sensor.
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 see the results for the following category : Fuel cells |
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