ROTRONIC HP22A - Manual (Page 7)

E-M-HP22-V2_13
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroPalm HP22-A hand-held indicator:
User Guide
Instruction Manual
Document Type
Page 7 of 16
Document title
© 2010-2012; Rotronic AG E-M-HP22-V2_13
3.3 Interaction between the HP22 and probe functions
It is important to note that when used together, the HP22 indicator and HC2 probe (HygroClip 2) constitute a
2-component system. Each system component has its own microprocessor, firmware and functions. Some of
these functions are unique to each system component. Other functions are found in both components.
The functions and settings of the HP22 indicator and HygroClip 2 probe (HC2) operate together as indicated
below:
Function / Setting HP22 HC2 Notes
Device protection X X Individual to the HP22 and HC2 probe
RS-485 address X X Individual to the HP22 and HC2 probe
Device Name X X
User defined description
The device name of the HC2 probe is not displayed by HW4 and is
replaced with the HP22 Input Name
Calculation X X
Psychrometric calculation
HP22 setting overrides HC2 probe setting
Data refresh rate X
When set above 1 s, causes the HC2 probe not to be powered in
between measurements
Simulator function X X
Generates fixed humidity and / or temperature value
When enabled, the HP22 settings override the HC2 probe settings
Unit system X X
The HP22 setting overrides HC2 probe setting. The HC2 probe
settings still apply when the probe is used alone
Make sure to use the same humidity symbol and the same
temperature unit for both the HP22 and probe.
Out-of-limits value
alarm
X X
The HP22 settings are independent from the HC2 probe settings.
The HC2 probe settings have an effect only when the HP22 is
enabled to monitor alarms generated by the probe
When out-of-limit values have been defined for the same
parameter for both the HP22 and probe, alarms are triggered
based on the narrowest set of limits.
Analog outputs X X
Parameter and scale
The HC2 probe settings have no effect on the HP22