ROTRONIC HP23-AW-A - Manual (Page 12)

E-M-HP23-V2_13
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroPalm HP23-A / HP23-AW-A hand-held
indicator:
User Guide
Instruction Manual
Document Type
Page 12 of 37
Document title
© 2009-2012; Rotronic AG E-M-HP23-V2_13
4.1.2 Difference between Probe 1 and Probe 2 (Delta Probe)
The difference between the humidity, temperature and calculated parameter of two probes connected to the
HP23 (Probe 1 value minus Probe 2 value) can be shown on the display by turning on the DPbe/UCalc option
(HP23 internal menu - accessed from the keypad). The Delta Probe function is similar to a third probe that can
be selected from the keypad with the UP key or with the DOWN key.
Note: This function works only when two probes are connected to the HP23. Delta Probe is also not available
when the HP23 has been configured with the HW4 software to calculate a user defined parameter (see
below).
4.1.3 User defined parameter
Using the HW4 software, the HP23 can be enabled to calculate up to two user defined parameters such as
the difference between the temperature and the dew point measured by a probe, the average of the
temperature measured by two probes, etc.
The user defined parameters can be shown on the display by turning on the DPbe/UCalc option (HP23
internal menu - accessed from the keypad). For additional explanations and instructions see the following
HW4 manual: E-M-HW4v3-F2-012.
4.2 Keypad
ON/OFF: Turns the instrument on or off.
Activates / de-activates HOLD function
MENU: Activates the internal menu. Press this
key again to go back to the previous sub-
menu or to exit the menu
UP / DOWN:
o
Changes the probe being displayed (including delta
probe or user defined parameter, when enabled)
o Changes the data-bin used to capture data
o When the menu is active, use to navigate the menu,
make a selection or change a value
ENTER:
o
When the menu is active, use to confirm the
selection of a menu item, effect a change of
settings and confirm any change
o In the HP23 Standard Mode, use to capture the
current %RH and temperature data to one of the 8
data bins
o In the HP23 AW Mode, use to start, hold or stop
the water activity measurement function