WP
4
PotentiaMeter
Computer Interface
42
the screen labeled “Connect Using” and select
the COM Port your RS-232 cable is connected to.
4. A pop-up menu labeled “COM Properties” will
appear, showing the port settings for the COM
port you selected. Make sure the settings are the
following: Bits per second, 9600; 8 databits, no
parity, 1 stop bit, and flow control set to hard-
ware. Click OK.
5. Plug your RS-232 cable to the COM port you
selected and connect it to your WP4. Begin sam-
pling. Your WP4’s data will be displayed on
screen as it samples. It will be output in the fol-
lowing format:
time (since chamber was closed), sample tempera-
ture, sample water potential, and sample water
activity. Here is an example:
6. When you are finished sampling, you can print
the data in the terminal session, or cut and paste
it to a spreadsheet or text editor. If you want to
3, 24.3, -2.19, 0.9839
time since
sample was
started
temp
(°C)
Water
potential
Water
activity
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