Table 5 Membrane specifications - Oxygen sensors (1) (continued)
Specification
2956A-A
2958A-A
29552A-A
2952A-A
Integrated radiation dose limit
[rads]
2 x 10
4
10
8
N/A
10
8
Expected current in air @ 1 bar
25 °C [μA]
26.4
9.4
6.3
5.4
Expected current in pure O
2
[μA]
132
47
31.4
27
O
2
consumption in O
2
saturated
water at 25 °C [μg/hour]
40
14
9.4
8
Temp. compensation range
– 5 to 60 °C
Temp. measuring range
– 5 to 100 °C
Response time
5
7.2 sec.
9.5 sec.
90 sec.
38 sec.
Recommended min. liquid flow
rate
6
[mL/min]
180
120
50
50
Recommended min. linear flow
rate
6
[cm/sec]
200
100
30
30
Recommended gaseous flow rate
[L/min]
0.1 to 3
2.3.2 Oxygen sensors (Table 2)
Table 6 Membrane specifications - Oxygen sensors (2)
Specification
2935A-A
29521A-A
2995A-A
Recommended applications
Saturated to super
saturated levels
Saturated to super
saturated levels
In line hot wort
(up to 70 °C)
Material
Halar
®
7
Tefzel
®
Tefzel
®
Thickness [μm]
25
125
12.5
Calibration gas
Air / Pure O
2
Air / Pure O
2
Pure O
2
Dissolved measurement range
0 ppb to 400 ppm
0 ppb to 400 ppm
0 ppb to 2000 ppm
Gaseous measurement range
0 Pa to 1000 kPa
0 Pa to 1000 kPa
0 Pa to 5000 kPa
Accuracy
The greater of
±1% of reading
or ± 10 ppb,
or ± 20 Pa
The greater of
±1% of reading
or ± 10 ppb,
or ± 20 Pa
The greater of
±1% of reading
or ± 50 ppb,
or ± 100 Pa
Integrated radiation dose limit [rads]
N/A
10
8
10
8
Expected current in air @ 1 bar
25 °C [μA]
0.9
0.7
0.2
Expected current in pure O
2
[μA]
4.7
3.8
0.9
O
2
consumption in O
2
saturated
water at 25 °C [μg/hour]
1.4
1.3
0.3
Temp. compensation range
– 5 to 60 °C
5
Response time at 25 °C for a 90% signal change
6
Liquid flow through an ORBISPHERE 32001 flow chamber, with protection cap and no grille
7
Halar is a trademark of Solvay Corporation.
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