Chapter 4 ________________________________________________________________ Operation
VAISALA_______________________________________________________________________ 51
To start issuing commands, make sure that HMT360 is connected to a
serial port of your computer and that the terminal session is open. Issue
commands by typing them on your computer according to the following
instructions. In these commands, <cr> stands for pressing Enter (on your
computer keyboard).
Setting the Analog Outputs
ASEL Selecting Analog Outputs
Syntax: ASEL [xxxyyy]<cr>
Turn the internal DIP switch Calibration Enabled/Disabled to position
ON before the selecting the analog outputs and return it to position OFF
after making the selection. Output quantities and their abbreviations are
listed in the table below:
where
xxx = Quantity of Ch 1
yyy = Quantity of Ch 2
Character Quantity Abbreviation Availability Metric Unit Nonmetric Unit
0 relative humidity RH A, D %RH %RH
1 temperature T A, D, F, H °C °F
2 dewpoint
temperature
Td D °C °F
3 absolute humidity a D
g/m
3
gr/ft
3
4 mixing ratio x D g/kg gr/lb
5 wet bulb
temperature
Tw D °C °F
6mass
concentration of
water
ppmw H ppm
w
ppm
w
7 water activity aw H, F 0 ... 1 0 ... 1
8 relative humidity
of saturation
RS H %RS %RS
9 saturation
temperature
Ts H °C °F
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