Hach ORBISPHERE 31x9 Series, Basic User Manual

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Sensor type
31490 CO
2
(purge
gas N
2
)
31590 N
2
(purge gas
CO
2
)
31285TC H
2
/D
2
and He (clean air
purge)
Specification Membrane 29561A Membrane 29561A Membrane 2952A
Membrane
29561A
Accuracy (sample
temperature 20-50°C
within ± 5°C of
calibration temperature)
The greater of ±1%
of reading or ±
0.006V/V, or ±
0.012g/kg, or ±
8 mbar
The greater of ±2% of
reading or ± 0.3 ppm,
or ± 0.25mL/L, or ±
15 mbar
The greater of
±2% of reading or
± 1% H
2
/D
2
The greater of
±2% of reading or
± 0.2% H
2
/D
2
Accuracy (sample
temperature 0-50°C
independent of
calibration temperature)
The greater of ±2%
of reading or ±
0.02 V/V or ±
0.048g/kg or ±
14 mbar
The greater of ±4% of
reading or ± 1 ppm or
± 0.8 mL/L or ±
34 mbar
N/A N/A
Measurement cycle
(seconds)
22
3
60 60
Sample flow rate
4
(through flow chamber)
100 mL/min 300 mL/min 200 mL/min 500 mL/min
Linear flow rate
5
(past
sensor socket)
50 cm/sec 150 cm/sec N/A N/A
Sensor weight and dimensions
Weight 1050 g (±20g).
Figure 1 Sensor dimensions
3
Measurement cycle for 3624 ProBrix application is 15 seconds
4
Minimal flow through an ORBISPHERE 32001 flow chamber
5
Minimal flow past an ORBISPHERE 29501 sensor socket
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