Vaisala PTB330TS - Manual (Page 35)

Chapter 3 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 33
settings upon exiting; select YES if you want to check the
settings, or NO to exit.
3. Attach the MI70 indicator to the top of the tabletop casing, and wait
for the reading to stabilize.
0812-017 Figure 12 Ready for Pressure Measurement
Measuring Humidity and Temperature (Option)
1. Place the HMP155 probe in the desired measurement location:
- Make sure the probe sits securely and will not fall when
operating the MI70 indicator.
- The probe should be out of direct sunlight and not near any
heat sources.
- If you are measuring relative humidity (RH), mixing ratio (x)
or wetbulb temperature (T
w
) and your HMP155 has the
additional temperature probe (T-probe), it is important to
make sure that the humidity probe and the T-probe are placed
in the same conditions in order to get meaningful and accurate
humidity readings. The two probes need to be installed so that
the humidity probe does not heat the T-probe, but is close
enough for the probes to share the same environment
conditions.