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| Categories | Gas Detector Sensor |
|---|---|
| Brand Name: | Alphasense |
| Model Number: | O2-A2 |
| Certification: | CE |
| Place of Origin: | UK |
| MOQ: | 1 |
| Payment Terms: | L/C, D/A, D/P, T/T |
| Range: | High performance leak free O2 Sensor |
| Sensitivity: | < 0.1% CO2 Sensitivity |
| Response time t90: | T90 of less than 15 seconds |
| Temperature range: | -30 to 40 ℃ |
| Pressure range: | 80 to 120 kPa |
| Humidity range: | 15 to 85% rh continuous |
| Weight: | < 13 g |
| Company Info. |
| Beijing Zetron Technology Co., Ltd |
| Verified Supplier |
| View Contact Details |
| Product List |
O2-A2 Oxygen Sensor (O2 Sensor) Description
Alphasense Oxygen sensors use capillary flow control.
Unlike partial pressure oxygen sensors, they have good pressure and
temperature dependence, making them the best choice in safety
applications.
Standard galavanic sensors use lead for greatest reliability but
fixed lifetime.
Sensors are available in three sizes:
A: 20mm diameter, the industry standard size for portable gas
detectors
C: 20mm diameter, extra height allows additional filter material
when measuring combustion gases
G: Miniature, proven long-term performance. The sensors are
designed for the next generation of portable gas detectors. Part of
the Alphasense ‘D‘ family.
O2-A2 Oxygen Sensor (O2 Sensor) Features
– High-performance leak-free O2 Sensor
– T90 of less than 15 seconds
– < 0.1% CO2 Sensitivity
<span font-size:15.2px;background-color:#ffffff;"=""
style="color: rgb(33, 37, 41);">– Up to 99% humidity resistance
| O2-A2 Oxygen Sensor PERFORMANCE | ||
| Output | μA @ 20.9% O2 | 80 to 120 |
| Response time | t90 (s) from 20.9% to 0% O2 | < 15 |
| Zero current | μA in N2 | < 2.5 |
| Linearity | % O2 deviation @ 10% O2 | 0.6 |
| O2-A2 Oxygen Sensor LIFETIME | ||
| Output drift | % change in output @ 3 months | < 1 |
| Operating life | months until 85% original output of 20.9% O2 | > 24 |
| O2-A2 Oxygen Sensor ENVIRONMENTAL | ||
| Humidity Sensitivity | % O2 change: 0% to 95% rh @ 40℃ | < 0.7 |
| CO sensitivity | % (change O2 reading) / % CO2 @ 5% CO2 | 0.1 |
| Pressure sensitivity | (% change of output)/(% change of pressure) @ 20kPa | < 0.1 |
| O2-A2 Oxygen Sensor KEY SPECIFICATIONS | ||
| Temperature range | ℃ | -30 to 55 |
| Pressure range | kPa | 80 to 120 |
| Humidity range | % rh non-condensing (0 to 99% rh short term) | 5 to 95 |
| Storage period | months @ 3 to 20℃ (store in sealed pot, open circuit) | 6 |
| Load resistor | Ω (recommended) | 47 to 100 |
| Diameter | mm (including label) | 20 |
| Height | mm (including foam ring) | 17.4 |
| Weight | g | < 16 |
Matched Transmitter board for O2-A2 O2 Sensor
Alphasense 4-20m Analogue Transmitter Board
• Factory calibration, custom-set for immediate use
• Wide operating voltage range
• Low RFI susceptibility
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