IN-E-HyFlex-V4_10
Rotronic AG
Bassersdorf, Switzerland
Document code
Unit
Instruction Manual
Document Type
HygroFlex transmitter version 4: instruction
manual
Document title
Page
6
of 61
© 2006; Rotronic AG IN-E-HyFlex-V2_10.doc
2
General description
2.1 Power requirements
The HygroFlex is available with a choice of two basic internal power modules:
-
Standard power module for operation with 12 to 35 VDC (maximum 300 mA) or with 12 to 24 VAC.
-
Optional power module for operation with voltages within the range of 90 to 264 VAC (50/60 Hz).
Starting with PCB number 66.0738.0502 all models are equipped with a SMD power fuse
(250 VAC 1 A) – see page 19.
2.2 Probes and probe Inputs
Model
HygroFlex 1
HygroFlex 2
HygroFlex 3
number of probe inputs
1
1 (standard) or 2 (optional)
probe types (see below)
ROTRONIC Digital
ROTRONIC Analog
ROTRONIC Digital
ROTRONIC Analog
Third-Party Analog
number of digital input channels
1
1 (input 1) + 1 (input 2 - optional)
number of analog input channels
2
2 (input 1) + 1 (input 2 - optional)
analog input A/D resolution
10-bit
10-bit
Unless otherwise specified when ordering, all probe inputs are factory programmed to accept a HygroClip
digital probe and the voltage powering the probe is set to 5 VDC.
Prior to using any analog probe, the corresponding input should be re-programmed. This can be done with the
HW4 software after connecting the internal service connector to a PC COM port (see separate software
manual).
IMPORTANT:
HygroClip EX probes require 15 VDC power supply. These probes, as well as any third party
analog probe requiring a supply voltage of more than 5 VDC, can be supplied with 15 VDC by moving the
jumper B20 to B19 – see page 12: selection of the probe supply voltage.
A matching adapter cable is required to connect analog probes.
2.2.1
HygroClip digital probes
The HygroFlex is primarily designed for use with the ROTRONIC HygroClip digital humidity
temperature probes. These probes permit to take full advantage of all the features and functions of
the HygroFlex such as the software based calibration.
The ROTRONIC HygroClip digital probes are highly accurate and are calibrated entirely by means
of software (no adjustment potentiometers). Because calibration and other data are stored in the
probe non-volatile memory, the probes are fully interchangeable. When a probe requires calibration
or has to be repaired, it can be replaced with another probe in a few seconds. The ROTRONIC
HygroClip digital probes are available in different configurations so as to meet the requirements of
each application:
