English 3 - Hach ORBISPHERE 31 series Basic User Manual

Sensor specifications
Specifications are subject to change without notice.
Sensor product line
Max. Pressure
Gas
rating (bar)
20
50
O
2
100
200
20
O
3
100
50
H 100
2
200
• All ORBISPHERE electrochemical sensor enclosures are certified IP68 / NEMA4
• PEEK (Polyetheretherketone) is a highly crystalline thermoplastic
Sensor membrane specifications
Hydrogen sensors
Specification
Recommended applications
Material
Thickness [μm]
Calibration gas
Dissolved measurement range
Gaseous measurement range
Accuracy
Integrated radiation dose limit
Expected current in air @ 1 bar 25°C
[μA]
Expected current in pure gas [μA]
Temperature compensation range
Temperature measuring range
Sensor models Comments
31 11x.yz
Where :
x=Sensor special characteristics
31 12x.yz
(0 or 1; depending on application)
31 13x.yz
y=Membrane O-ring material
31 14x.yz
(0=EDPM; 1=Viton; 2=Kalrez; 4=Nitril)
z=Head material
31 31x.yz
(1=Stainless Steel; 2=Peek; 4=Hastelloy; 5=Titanium; 7= Monel)
31 33x.yz
Suffixes (when used):
31 21x.yz
A denotes a sensor with fast response to temperature change
31 23x.yz
E denotes an EEx certified sensor (Ex-Proof)
s denotes a Smart sensor
31 24x.yz
Membrane
2956A
Trace
measurement
PFA
25
1% pure H
0 ppb to 75 ppb
0 Pa to 5 kPa
The greater of
±1% of reading or
± 0.03 ppb, or ±
1 Pa
4
2 x 10
150
0 to 50°C
Membrane
2952A
Low
concentration
®
Tefzel
25
10% pure H
2 2
0 ppb to
300 ppb
0 Pa to 20 kPa
The greater of
±1% of reading ±1% of reading or
or ± 0.09 ppb,
or ± 6 Pa
8
10
N/A
50
0 to 50°C
-5 to 100° C
Membrane Membrane
2995A 29015A
Average
concentration concentration
®
Tedlar Saran
12.5
100% pure H 100% pure H
2
0 ppb to 0 ppb to
3200 ppb 32 ppm
0 kPa to
0 Pa to 200 kPa
2000 kPa
The greater of The greater of
±1% of reading
± 1 ppb, or ± or ± 10 ppb, or
50 Pa ± 1 kPa
8
10
5
10 to 45°C 10 to 45 °C

English 3

High
23
2
N/A
0.5