Hach-Lange ORBISPHERE 31xxx Thermal Basic User Manual - Manual (Page 4)

Sensor membrane specifications
In-line instrument applications (Table 1)
Sensor type
31 250 H
2
and 31260 H
2
(purge gas N
2
)
For other purge gases, please contact your Hach Lange
representative for specification.
Specification Membrane 29561A Membrane 2952A Membrane 2935A
Thickness [μm] 25 25 25
Material PFA ETFE ECTFE (Halar ® )
Recommended applications
Waste gas offgas,
reactor coolant
Reactor coolant High H
2
level
Radiation limits 10 5 rad 10 8 rad 10 8 rad
Measurement range at 25°C
0-2 ppm, or
0-25 cc/kg, or
0-1.5 bar
0-10 ppm, or
0-120 cc/kg, or 0-6 bar
0-20 ppm, or
0-220 cc/kg, or
0-12 bar
Accuracy (sample temperature
20-50°C within ± 5°C of calibration
temperature)
The greater of ±1% of
reading or ± 2 ppb, or
± 0.03cc/kg, or ±
1.5 mbar
The greater of ±1% of
reading or ± 8 ppb, or
± 0.1cc/kg, or ±
6 mbar
The greater of ±1% of
reading or ± 25 ppb, or
± 0.4 cc/kg, or ±
20 mbar
Accuracy (sample temperature 0-50°C
independent of calibration
temperature)
The greater of ±3% of
reading or ± 15 ppb or
± 0.18 cc/kg or ±
6 mbar
The greater of ±3% of
reading or ± 60 ppb or
± 0.6 cc/kg, or ±
20 mbar
The greater of ±3% of
reading or ± 150 ppb
or ± 2.5 cc/kg, or ±
50 mbar
Measurement cycle (seconds) 17
Sample flow rate 1 (through flow
chamber)
220 mL/min 200 mL/min 100 mL/min
Linear flow rate 2 (past sensor socket) N/A N/A N/A
1 Minimal flow through an ORBISPHERE 32001 flow chamber
2 Minimal flow past an ORBISPHERE 29501 sensor socket
In-line instrument applications (Table 2)
Sensor type
31 450 CO
2
and
31460 CO
2
(purge
gas N
2
)
31 550 N
2
and
31560 N
2
(purge
gas CO
2
)
31 280 H
2
/D
2
and He (clean air
purge)
Specification Membrane 29561A Membrane 29561A
Membrane
2952A
Membrane
29561A
Thickness [μm] 25 25 25 25
Material PFA PFA ETFE PFA
Recommended applications In-line beverage In-line beverage Reactor coolant Waste gas PWR
Radiation limits 10 5 10 5 10 8 10 5
Measurement range at 25°C
0-7 V/V, or
0-15 g/kg, or
0-10 bar
0-350 ppm, or
0-300 mL/L, or
0-20 bar
0-100% H
2
/D
2
or
0-10 bar
0-100% H
2
/D
2
or
0-4 bar
4 English