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ALPHASENSE
ALPHASENSE


O2-E2

Oxygen Sensor


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O2-E2 pdf
αS
O2-E2 Oxygen Sensor
Figure 1 O2-E2 Schematic Diagram
24.6
Top View
All dimensions in millimetres (± 0.1mm)
Bottom View
Side View
PERFORMANCE
Output
Response time
Zero current
Pressure sensitivity
Linearity
Hysteresis
Hand aspirator
response
µA @ 20.9% O2
t90 (s) from 20.9% to 0% O
2
µA in N
2
(% change of output)/(% change of pressure) @ 20kPa
% O deviation @ 30% O
22
% O2 change after 16 cycles: 0 to 20.9% O2
% O change during aspiration (typical)
2
260 to 315
< 15
<5
< 0.1
< 0.6
< 0.2
20 to 21.5
LIFETIME
Output drift
Operating life
% change in output @ 3 months
months until 85% original output of 20.9% O
2
ENVIRONMENTAL Humidity sensitivity % O change: 0% to 95% rh @ 40°C
2
CO sensitivity
% change in output / % CO @ 5% CO
2 22
PHYSICAL
DIMENSIONS
Diameter
Height
Weight
mm (including label)
mm (excluding foam ring)
g
<1
> 24
< 0.7
0.1
22.2
24.6
< 33
KEY
SPECIFICATIONS
Temperature range
Pressure range
Humidity range
Storage period
Load resistor
°C
kPa
% rh continuous (0 to 99% rh short term)
months @ 3 to 20°C (store in sealed pot, unshorted
(recommended)
-30 to 55
80 to 120
5 to 95
6
47 to 100
NOTE: all sensors are tested at ambient environmental conditions, with 47 ohm load resistor, unless otherwise stated. As applications of use are outside our control,
the information provided is given without legal responsibility. Customers should test under their own conditions, to ensure that the sensors are suitable for their own
requirements.
Alphasense Ltd, 3 Oak Industrial Park, Great Dunmow, Essex. CM6 1XN, UK
Telephone: +44 (0) 1371 878048 Fax: +44 (0) 1371 878066 E-mail: sensors@alphasense.com Website: www.alphasense.com
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O2-E2 pdf
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O2-E2 Performance Data
Figure 2 Sensitivity Temperature Dependence
106
104
102
100
98
96
94
92
90
88
86
84
82
-30 -20 -10
80
0 10 20
Temperature oC
30
Figure 2 shows the variation
in sensitivity caused by
changes in temperature.
Mean
"+95 conf."
"-95 conf."
See Application Note:
AAN 110 on our website
40 50
Figure 3 10kPa Pressure Step Performance
900
800
700
600
500
400
300
200
100
0
0 50 100 150 200
Time (seconds)
250
Step changes in pressure can
cause a temporary signal
transient. Positive pressure
gives an output signal
increase whilst negative
pressure causes the output
signal to decrease.
This repeatability was tested
on sensors six months old.
300
Figure 4 Response Profile
350
300
250
200
150
Figure 4 shows the time taken
for a typical O2-E2 sensor to
reach 90% of its maximum
output. This is termed the t90
response time and for these
sensors is less than 10
seconds.
100
50
0
0 100 200 300 400 500 600 700 800 900
Time (seconds)
For further information on the performance of this sensor, on other sensors in the range or any other subject, please
contact Alphasense Ltd. For Application Notes visit “www.alphasense.com”.
In the interest of continued product improvement, we reserve the right to change design features and specifications without prior notification. The data contained
in this document is for guidance only. Alphasense Ltd accepts no liability for any consequential losses, injury or damage resulting from the use of this document
or the information contained within it.
( ©ALPHASENSE LTD ) Doc. Ref. TDS/O2E2/ Issue 12
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Part Number O2-E2
Description Oxygen Sensor
Maker ALPHASENSE - ALPHASENSE
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