Vaisala HUMICAP HMT330 SERIES User Manual

Chapter 4 ________________________________________________________________ Operation
VAISALA______________________________________________________________________ 105
Example:
>pres
Pressure : 1013.00 hPa ?
>pres 2000
Pressure : 2000.00 hPa
>
Table 27 Conversion Factors for Pressure Units
From To: hPa
mbar 1
Pa N/m2 0.01
mmHg torr 1.333224
inHg 33.86388
mmH
2
O 0.09806650
inH
2
O 2.490889
atm 1013.25
at 980.665
bar 1000
psia
1)
68.94757
1) psia = psi absolute.
For example, 29.9213 inHg = 29.9213 × 33.86388 = 1013.25 hPa.
Date and Time
Using Display/Keypad
If the optional Data Logger Module is installed, you can change the time
and date using the display/keypad.
1. Press any of the arrow buttons to open the Main Menu.
2. Select System and press the ► arrow button to confirm your
selection.
3. Select Date and time and press the ► arrow button.
4. Press the SET button to enter the adjustment mode, and use the
arrow buttons to select and change the values.
5. You can also change the date and time formats that are shown in
the graphs. The selected formats are only used in graphical display,
they do not change the formats that are used in the serial
communication.
6. Press EXIT to return to the basic display.

Vaisala HUMICAP HMT330 SERIES Specifications

General

Humidity Measurement Range	0 ... 100 %RH
Protection Class	IP65
Measurement Parameters	Relative Humidity, Temperature
Temperature Measurement Range	-40 to +60 °C
Humidity Accuracy	±1 %RH (0 ... 90 %RH) ±1.7 %RH (90 ... 100 %RH)
Temperature Accuracy	±0.2 °C
Humidity Sensor	HUMICAP®
Output Signals	Analog
Power Supply	10...35 VDC
Operating Temperature Range	-40 to +60 °C