Hach-Lange ORBISPHERE 31xxx Installation and Maintenance - Manual (Page 13)

11
Technical Specifications
2.4.2 Oxygen sensors (Table 1)
Table 4 Membrane specifications - Oxygen sensors (1)
Membrane Model 2956A 2958A 29552A 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 [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 1 7.2 sec. 9.5 sec. 90 sec. 38 sec.
Recommended min. liquid
flow rate
2 [mL/min]
180 120 50 50
Recommended min. linear
flow rate
2 [cm/sec]
200 100 30 30
Recommended gaseous
flow rate [L/min]
0.1 to 3