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P-Type Metal Oxide Hydrogen Sulfide (H2S) Sensor
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Price
Price on request ≥1piece
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Model Number
H2S-MF1, H2S-PF1, H2S-AF1 -
Data Sheet
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Package
Original packaging -
Specs
H2S-MF1, H2S-PF1, H2S-AF1 -
Quantity
- +Send Inquiry
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Product Description
P-Type Metal Oxide Hydrogen Sulfide (H2S) Sensor Description
This sensor responds well in the temperature and humidity extremes of the oil and gas industry.
Unlike common n-type sensors, this p-type sensor has a large dynamic range, repeatable response, low humidity response and resistance increases in the presence of H2S.
The change in resistance can be converted to an output voltage via a simple electrical circuit. Although the sensor can be used in constant temperature/ voltage mode, best response is achieved when the sensor is cycled between 400°C (sensing temperature) and 525°C (reset temperature).
Developed over many years, our p-type metal oxide gas sensors offer the following benefits:
• stable baseline
• low humidity sensitivity
• positive response to gases (safer response)
H2S detection at high temperatures (up to 120°C) for oil and gas applications
Each sensor type can be supplied in three housings:
• TO-5 metal can, the most common format
• Plastic 6-pin housing - frequently used with other metal oxide gas sensors
• Ex housing - stainless steel 316 housing with UL, CSA, ATEX and IECEx approvals, unique for metal oxides, allowing use in hazardous areas without the need for an IS circuit
P-Type Metal Oxide Hydrogen Sulfide (H2S) Sensor Housing options
H2S-xF1: no passive filter fitted
This sensor responds well in the temperature and humidity extremes of the oil and gas industry.
Unlike common n-type sensors, this p-type sensor has a large dynamic range, repeatable response, low humidity response and resistance increases in the presence of H2S.
The change in resistance can be converted to an output voltage via a simple electrical circuit. Although the sensor can be used in constant temperature/ voltage mode, best response is achieved when the sensor is cycled between 400°C (sensing temperature) and 525°C (reset temperature).
Developed over many years, our p-type metal oxide gas sensors offer the following benefits:
• stable baseline
• low humidity sensitivity
• positive response to gases (safer response)
H2S detection at high temperatures (up to 120°C) for oil and gas applications
Each sensor type can be supplied in three housings:
• TO-5 metal can, the most common format
• Plastic 6-pin housing - frequently used with other metal oxide gas sensors
• Ex housing - stainless steel 316 housing with UL, CSA, ATEX and IECEx approvals, unique for metal oxides, allowing use in hazardous areas without the need for an IS circuit
P-Type Metal Oxide Hydrogen Sulfide (H2S) Sensor Housing options
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Housing |
H2S |
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TO-5 metal |
H2S-MF1 |
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6-pin Plastic |
H2S-PF1 |
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Ex certified metal |
H2S-AF1 |
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P-Type Metal Oxide Hydrogen Sulfide (H2S) Sensor PERFORMANCE |
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Range |
ppm H2S |
1 to 100 |
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Sensor resistance (Ro) |
kΩ (50% rh, 23 ±2°C) |
280 ±50 |
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Sensor resistance (Rg) |
kΩ H2S @ 24ppm in air |
1500 ±500 |
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Sensor resistance ratio (Rg/Ro x 100%) |
% H2S @ 24ppm in air |
550 ±100 |
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Gas response (Rg/Ro - 1 = k.Concn) |
k |
0.5 ± 0.1 |
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n |
0.7 ± 0.05 |
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Heater resistance (RH@ 23 ±2°C) |
Ω |
10.5 ±1.5 |
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Heater resistance (RH@ 400 ±10°C) |
Ω |
25 ±3 |
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Heater resistance (RH@ 525 ±10°C) |
Ω |
29 ±3 |
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Heater power consumption (mW) |
VH = 2.7 ±0.2V (400°C) |
360 ±30 |
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VH = 3.7 ±0.3V (525°C) |
550 ±50 |
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Operating Temperature Range |
°C |
-20 to 120 |
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P-Type Metal Oxide Hydrogen Sulfide (H2S) Sensor CROSS SENSITIVITY |
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H2 sensitivity |
% measured gas @ 100 ppm H2 |
TBA |
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EtOH sensitivity |
% measured gas @ 50 ppm EtOH |
TBA |
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C3H8 sensitivity |
% measured gas @ 500 ppm C3H8 |
TBA |
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NH3 sensitivity |
% measured gas @ 25 ppm NH3 |
TBA |
|
SO2 sensitivity |
% measured gas @ 25 ppm SO2 |
TBA |