Oxygen sensors (table 1), 4 english – Hach-Lange ORBISPHERE 31xxx Basic User Manual User Manual
Page 4
Specification
Membrane
2956A
Membrane
2952A
Membrane
2995A
Membrane
29015A
Response time
1
2 seconds
5 seconds
6 seconds
50 seconds
Recommended minimum liquid flow
rate
2
[mL/min]
50 to 220
40 to 200
20 to 70
20 to 40
Recommended minimum linear flow
rate
2
[cm/sec]
200
150
50
30
Recommended gaseous flow rate
[L/min]
0.005 to 3
1
Response time at 25°C for a 90% signal change
2
Liquid flow through an ORBISPHERE 32001 flow chamber, with protection cap and no grille
Oxygen sensors (table 1)
Specification
Membrane
2956A
Membrane
2958A
Membrane
29552A
Membrane
2952A
Recommended applications
Corrosion
control, De-
aerated water
Beverage, Lab.
applications
In line wort,
Air/O
2
injection,
Sewage
treatment
Corrosion
control, In line
beverage, De-
aerated water
Material
PFA
Tefzel
®
PTFE
Tefzel
®
Thickness [μm]
25
12.5
50
25
Calibration gas
Air
Air
Air
Air / pure O
2
Dissolved measurement range
0 ppb to 20 ppm 0 ppb to 40 ppm 0 ppb to 80 ppm 0 ppb to 80 ppm
Gaseous measurement range
0 Pa to 50 kPa
0 Pa to 100 kPa 0 Pa to 200 kPa 0 Pa to 200 kPa
Accuracy
The greater of
±1% of reading
or ± 0.1 ppb
(1)
,
or ± 1 ppb
(2)
, or
± 0.25 Pa
The greater of
±1% of reading
or ± 1 ppb, or ±
2 Pa
The greater of
±1% of reading
or ± 2 ppb, or ±
5 Pa
The greater of
±1% of reading
or ± 2 ppb, or ±
5 Pa
(1)
Accuracy is ± 0.1 ppb for 410, 510, 362x, 360x and 3655 instruments
(2)
Accuracy is ± 1 ppb for 366x and 3650 instruments
Integrated radiation dose limit
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
Temperature compensation range
-5 to 60°C
Temperature measuring range
-5 to 100° C
Response time
1
7.2 seconds
9.5 seconds
90 seconds
38 seconds
Recommended minimum liquid flow
rate
2
[mL/min]
180
120
50
50
4 English