Chapter 5 measuring at overpressure, Chapter 5, Measuring at overpressure – Vaisala HMT360N User Manual
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Chapter 5 __________________________________________________ Measuring at Overpressure
VAISALA _______________________________________________________________________ 61
CHAPTER 5
MEASURING AT OVERPRESSURE
This chapter provides you with important information concerning
measurement in conditions with pressure higher than the normal
atmospheric pressure.
The probes HMP362, HMP364 and HMP368 are designed for dewpoint
measurement at overpressure. The maximum measurement pressures
depend on the probe as follows:
The accuracy of the dewpoint measurement is affected by pressure in
the measurement chamber. The actual pressure in the sampling cell is
required to be set to the transmitter, see section
).
HMP362:
0 ... 167 bar (16,7 MPa), for natural gas, sample cell
HMP302SC available
HMP364:
0 ... 100 bar (10 MPa), for pressurized rooms and
processes, probe is provided with a nut, fitting screw
and sealing washer
HMP368:
0 ... 40 bar (4 MPa), for pressurized pipelines, ball
valve set available