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
NO-B4 Nitric Oxide Sensor (NO Sensor) Description
Alphasense Nitric Oxide gas sensors operate using proven fuel cell technology.
Sensors are available in the following sizes:
A: 20mm diameter, the industry standard size for portable gas detectors B: 32mm diameter package, the best choice for fixed site applications
D: miniature, with proven long-term performance. Sensors designed for the next generation of portable gas detectors.
The NO range provides OEMs with reliable sensors for use in a number of high volume applications. Strong signal levels combined with low zero current allows resolution to 200 parts per billion (ppb) whilst giving linear outputs to as high as 250ppm. The sensors are suitable for inclusion in fixed installation sensing heads, portable safety instruments, urban air monitoring and stack gas analysers.
Alphasense NO sensors provide a significant improvement in stability of response to transient relative humidity changes.
The NO sensors offer our electrolyte leak-free guarantee and reliable long-term detection performance. The leakproof housing is moulded with a colour coded top for ease of identification.
NO-B4 Nitric Oxide Sensor (NO Sensor) PERFORMANCE |
Sensitivity |
nA/ppm at 2ppm NO |
500 to 850 |
Response time |
t90 (s) from zero to 2ppm NO |
< 45 |
Zero current |
nA in zero air at 20ºC |
30 to 140 |
Noise* |
±2 standard deviations (ppb equivalent) |
15 |
Range |
ppm NO limit of performance warranty |
20 |
Linearity |
ppb error at full scale, linear at zero and 5ppm NO |
< ±1 |
Overgas limit |
maximum ppm for stable response to gas pulse |
50 |
* Tested with Alphasense ISB low noise circuit |
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NO-B4 Nitric Oxide Sensor (NO Sensor) LIFETIME |
Zero drift |
ppb equivalent change/year in lab air |
0 to 50 |
Sensitivity drift |
% change/year in lab air, monthly test |
0 to -20 |
Operating life |
months until 50% original signal (24 month warranted) |
> 24 |
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Nitric Oxide Sensor (NO Sensor) NO-B4 ENVIRONMENTAL |
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Sensitivity @ -20ºC |
(% output @ -20ºC/output @ 20ºC) @ 2ppm NO |
60 to 90 |
Sensitivity @ 40ºC |
(% output @ 50ºC/output @ 20ºC) @ 2ppm NO |
97 to 110 |
Zero @ -20ºC |
nA |
0 to 30 |
Zero @ 40ºC |
nA |
100 to 200 |
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NO-B4 Nitric Oxide Sensor (NO Sensor) CROSS SENSITIVITY |
H2S sensitivity |
% measured gas @ 5ppm H2S (after 3 minutes) |
< 10 |
NO2 sensitivity |
% measured gas @ 5ppm NO2 (after 3 minutes) |
< 4 |
Cl2 sensitivity |
% measured gas @ 5ppm Cl2 |
< 3 |
SO2 sensitivity |
% measured gas @ 5ppm SO2 |
< 5 |
H2 sensitivity |
% measured gas @ 100ppm H2 |
< 0.1 |
CO sensitivity |
% measured gas @ 5ppm CO |
< 0.3 |
NH3 sensitivity |
% measured gas @ 5ppm NH3 |
< 0.1 |
CO2 sensitivity |
% measured gas @ 5% Vol CO2 |
< 0.1 |
O3 sensitivity |
% measured gas @ 100ppb O3 |
< 4 |
Halothane sensitivity |
@ 100ppm Halothane |
< 0.1 |
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NO-B4 Nitric Oxide Sensor (NO Sensor) KEY SPECIFICATIONS |
Bias voltage |
mV(working electrode potential is above reference electrode) |
200 |
Temperature range |
ºC |
-30 to 40 |
Pressure range |
kPa |
80 to 120 |
Humidity range |
% rh continuous |
15 to 85 |
Storage period |
months @ 3 to 20ºC (stored in sealed pot) |
6 |
Load resistor |
Ω (ISB circuit is recommended) |
33 to 100 |
Weight |
g |
< 13 |
Matched Transmitter board for NO-B4 NO Sensor Individual Sensor Board (ISB) Alphasense B4 4-Electrode Gas Sensors
The Individual Sensor Board (ISB) is designed for use with the Alphasense B4 family of four-electrode gas sensors. This potentiostat provides a dual channel voltage output.
A low noise bandgap provides the bias voltage for NO sensors and the ISB can measure both oxidising (CO, H2S, SO2 and NO) and reducing (O3 and NO2) gases.
The ISB is configured for specific sensors: NO, NO2, O3 and CO / H2S / SO2 .
Designed for low power applications, the ISB requires 3.5 to 6.4 stable DC supply at only 1mA.
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Beijing Zetron Technology Co., Ltd, formerly Beijing Senre Technology Co., Ltd was founded in 2006, located in Beijing with convenient transportation access. We have almost 16 years experience in the retail, import and export of gas detection and monitoring equipment.
This experience has enabled us to form an organisation based on knowledge and expertise and have allowed us to supply a range of gas detectors and monitors that are tailored to our customers needs and budgets. Our aim is to provide the best values products with high quality and style.To provide the new affordable and complete service for gas detection needs for the industrial, engineering and shipping market and our friendly staff are here to help with advice and prices. So far, we have customers/buyers from over 20 countries/regions like Bulgaria, Brazil, Canada, China, Colombia, Germany, Iraq, Japan, Philippines, Russian Federation, Singapore, Taiwan, Thailand, Uruguay, United States, Ukraine, Vietnam, etc.
The list of countries still expanding.....!!
We are committed to become the International Well Know Provider to provide similar or better alternative, original merchandises & service to meet customers' needs, requirements and solutions.
Every customer is important to us and we strive to satisfy all our Customers needs and expectations.
Local and International Distributors, Dealers and Resellers are Welcomed! Please contact us at the homepage.