Hach-Lange ORBISPHERE 31xxx Installation and Maintenance - Manual (Page 14)

12
Technical Specifications
2.4.3 Oxygen sensors (Table 2)
Table 5 Membrane specifications - Oxygen sensors (2)
Membrane Model 2935A 29521A 2995A
Recommended
applications Saturated to super
saturated levels
Saturated to super
saturated levels
In line hot wort
(up to 70°C)
Material Halar ® Tefzel ® Tedlar ®
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
Temp. measuring range – 5 to 100° C
Response time 1 2.5 min. 18 min. 80 sec.
Recommended min. liquid
flow rate
2 [mL/min]
25 25 5
Recommended min. linear
flow rate
2 [cm/sec]
20 60 5
Recommended gaseous
flow rate [L/min]
0.1 to 3