ROTRONIC HF4 - Manual (Page 10)

E-M-HF4-V1_22
Rotronic AG
Bassersdorf, Switzerland
Document code Unit
HygroFlex HF4 Humidity Temperature
Transmitters: User Guide Instruction Manual
Document Type
Page 10 of 29
Document title
© 2009-2011; Rotronic AG E-M-HF4-V1_22
PROCESS PROTECTION / PROTECTION OF OTHER DEVICES
AirChip 3000 Functions Description
► Limit humidity output to 100 %RH Used to prevent the humidity signal from exceeding
100 %RH when condensation forms on the sensor. Can be
enabled or disabled
► Out-of-limit value alarm Used to specify the normal range for humidity, temperature and
the calculated parameter depending on the user application.
Can be configured, enabled or disabled
Out-of-limit values trigger a digital alarm which can be also be
seen on the optional display
► Bad sensor alarm Built-in function. Cannot be disabled
A bad humidity or temperature sensor triggers a digital alarm
which can be also be seen on the optional display
► Fail safe mode Used to specify a "safe" fixed value for humidity and for
temperature in the event of a sensor failure. Can be configured,
enabled or disabled
4.2 Factory default settings
Notes:
o Configuration of the HF4 by the user and access to its functions requires a PC with the ROTRONIC HW4
software (version 2.1.1 or higher) installed. Service cable AC3006 or AC3009 is used to connect the HF4
service connector to a USB port of the PC (see Maintenance > Service Cable). The HF45 can also be
connected to the PC using either its USB or Ethernet interface
o Settings and functions that can also be either partially or fully accessed from the optional keypad are
marked with the letter K (see also Operation > Internal Menu).
Configurable Settings
Applicability Factory default
Unit system (Metric or English) K HF42, HF43, HF45 As per ordering code
Analog signal type (4…20 mA or other) HF43 As per ordering code
Psychrometric calculation HF42, HF43, HF45 As per ordering code
Output 1 parameter, scale and unit HF42, HF43 As per ordering code (%RH or DP)
Output 2 parameter, scale and unit HF42, HF43 Temperature, unit as per ordering code
Display resolution (optional) HF42, HF43, HF45 1 decimal
Display backlight (optional) K HF43, HF45 Always on
Displayed parameters K HF42, HF43, HF45 As per ordering code
Trend indicator (display) HF42, HF43, HF45 Enabled
Communication protocol HF43 with DI, HF45 RO-ASCII
RS-485 address HF43, HF45 0
TCP/IP settings HF45 See document IN-E-TCPIP-Conf
Device name HF43, HF45 Instrument model