Manual

12.0902.0003
ROTRONIC AG, CH-8303 Bassersdorf
Tel. [phone], www.rotronic.com
ROTRONIC Messgeräte GmbH, D-76275 Ettlingen
Tel. [phone], www.rotronic.de
ROTRONIC SARL, 56, F - 77183 Croissy Beaubourg
Tél. [phone], www.rotronic.fr
ROTRONIC Italia srl
, I- 20157 Milano
Tel. [phone], www.rotronic.it
ROTRONIC Instruments (UK) Ltd, West Sussex RH10 9EE
Phone [phone], www.rotronic.co.uk
ROTRONIC Instrument Corp, NY 11788, USA
Phone [phone], www.rotronic-usa.com
ROTRONIC South East Asia Pte Ltd, Singapore 339156
Phone [phone], www.rotronic.com.sg
ROTRONIC Shanghai Rep. Office, Shanghai 200233, China
Phone [phone], www.rotronic.cn
A
Digital transmitter for humidity & temperature
Congratulations on your purchase of the new state-of-the-art HygroFlex8-series transmitter. Please
read these short instructions carefully before installing the device.
General description
The HygroFlex8-series devices are universal transmitters for transmission of humidity and tempera-
ture measurements. Compatible with all interchangeable HC2 probes. These short instructions are
limited to a description of the main functions and installation of the device. The detailed instruction
manual can be found on the internet at: www.rotronic.com
Dimensions / Connections
Wall version
Measured Parameters
HygroClip2 probe:
Humidity and temperature. The HC2 probes measure relative humidity with a ROTRONIC Hygromer
®
IN1 capacitive sensor and temperature with a Pt100 RTD.
Analog probe (general):
Any parameter measured by the probe. The parameter unit must be specied with the HW4 software
(Device Manager). Analog pressure probe: the unit used for barometric pressure is set with the
HW4 software > Device Manager > Unit System.
Probe inputs
The HF8 has two probe inputs. Using the HW4 software (Device Manager), each probe input can
be congured to accept one of the following:
HygroClip2 humidity-temperature digital probe:
Both inputs can be congured to read and display digital signal of a HygroClip2 probe.
1-channel analog probe (general):
To be compatible with the HF8 the analog probe must meet the following requirements: supply
voltage: max. 5 VDC, current consumption: max. 10 mA, output signal: 0 to max. 3.3 VDC. The HF8
uses a 12-bit A/D converter to digitize the probe analog signal and can be congured to measure
practically any parameter.
Analog pressure probe:
This is a special case of analog probe and is subject to the same compatibility requirements. When
analog pressure probe is selected, the HF8 automatically uses the signal from the probe to calculate
any humidity parameter that requires barometric pressure as an input value (example: mixing ratio).
AC5005 Mounting ange
for 15 mm probe
Service interface
Digital connection
Mounting the wall version
Alignment
Mount the transmitter so that the probe points down.
Mounting variant 1
Drill the necessary holes using the drill template drawn on the
packaging. Then insert the plugs delivered with the device and
mount the transmitter with the screws.
Mounting variant 2
If there is a TS35 DIN top-hat rail available, the transmitter can be
clipped on to the top-hat rail directly with the help of the mounting
kit AC5002 (available as optional extra). For this, the DIN holders
(a kit has two holders and eight screws) are screwed directly on to
the predrilled holes in the transmitter.
Electrical installation
Power supply
a) HF831 - HF835: 15 to 40 VDC or 12 to 28 VAC
b) HF841 - HF845 (galvanic separated): 9 to 36 VDC or 7 to 24 VAC
c) HF857: Power over Ethernet (PoE) or 12 to 28 VAC
d) HF861 - HF865: 85 to 265 VAC
Note: depending on the type of output signal, the HF8 will operate with the following
minimum voltage
0…1 V outputs 5 VDC or 5 VAC
0…5 V outputs 10 VDC or 8 VAC
0…20 mA or 4 …20 mA outputs 6 VDC or 5 VAC with 0 ohm load
15 VDC or 12 VAC with 500 ohm load
Typical maximum current consumption
Model with 4 analog outputs 150 mA
Model with 4 relay contacts 150 mA
Model with Ethernet (TCP/IP) interface 300 mA
Supply voltage / Technology
Type Supply voltage V+ Load Output
HF831 15…40 VDC / 12…28 VAC Max 500 Ω 0...20 mA
HF832 15…40 VDC / 12…28 VAC Max 500 Ω 4...20 mA
HF833 15…40 VDC / 12…28 VAC Min 1000 Ω 0...1 V
HF834 15…40 VDC / 12…28 VAC Min 1000 Ω 0...5 V
HF835 15…40 VDC / 12…28 VAC Min 1000 Ω 0...10 V
Type Supply voltage V+ Load Output
HF841 9…36 VDC / 7…24 VAC Max 500 Ω 0...20 mA
HF842 9…36 VDC / 7…24 VAC Max 500 Ω 4...20 mA
HF843 9…36 VDC / 7…24 VAC Min 1000 Ω 0...1 V
HF844 9…36 VDC / 7…24 VAC Min 1000 Ω 0...5 V
HF845 9…36 VDC / 7…24 VAC Min 1000 Ω 0...10 V
HF857 Power over Ethernet (PoE) Digital Output
HF861 85...265VAC Max 500 Ω 0...20 mA
HF862 85...265VAC Max 500 Ω 4...20 mA
HF863 85...265VAC Min 1000 Ω 0...1 V
HF864 85...265VAC Min 1000 Ω 0...5 V
HF865 85...265VAC Min 1000 Ω 0...10 V
Caution: Wrong supply voltages and excessively high loading of the outputs can
damage the transmitter.
Terminal conguration / Connection diagrams
The type is dened using the table Supply voltage / Technology to then use the following connec-
tion diagrams:
Terminal block diagram (all HF8 models)
Terminal Block K6 Description
K6-1: – Power supply: VDC (-) or VAC (neutral)
K6-2: + Power supply: VDC (+) or VAC (Phase)
K6-3: Protective ground (see note below)
Terminal Blocks K1 and K2 Description Standard output
K1-1: GND Output signal 1 (–)
K1-2: GND Output signal 2 (–)
K1-3: GND Output signal 3 (–)
K1-4: GND Output signal 4 (–)
K2-1: OUT 1 Output signal 1 (+) Humidity*
K2-2: OUT 2 Output signal 2 (+) Temperature**
K2-3: OUT 3 Output signal 3 (+) Humidity*
K2-4: OUT 4 Output signal 4 (+) Temperature**
Terminal Block K3 (RS-485) Description
K3-1: V+ VDC (+), when HF8 is powered from RS-485 data cable
K3-2: GND VDC (-), when HF8 is powered from RS-485 data cable
K3-3: D+ RS-485 +
K3-4: D– RS-485 –
Relay 1 2 3 4
Terminal Block K7 K8 K4 K5
NC: Normally closed (relay not energized) K7-1 K8-1 K4-1 K5-1
COM: Common K7-2 K8-2 K4-2 K5-2
NO: Normally open (relay not energized) K7-3 K8-3 K4-3 K5-3
* For humidity and calculated value output settings:
OUT2/4 = calculated value, OUT1/3 = humidity
** For temperature and calculated value output settings:
OUT1/3 = calculated value, OUT2/4 = temperature
Terminal K6-3: Protective ground is usually connected to GND. If this is not wanted, a link on
the PCB (B2) must be removed.
Terminals K3 (RS-485): Terminals K3-1 and K3-2 can be used to feed the device (multi-point
connection). Several RS-485 devices can be operated with a strong 15 VDC power supply unit. In
this case the supply voltage at K6-1 to K6-3 is not used.
Warning: Make sure that all settings have been made correctly before integrating and connecting
the transmitters in the network.
Programming
The basic settings of the devices are made in the factory according to your order. The transmit-
ters are adjusted in the factory and therefore do not need to be checked and readjusted during
installation. The devices can be started immediately after installation.
SHORT INSTRUCTION MANUAL
Current output
Voltage output
Relay Digital Analog
102
192
85
52
=
~
K6-2:
DC+/AC L
K6-1:
DC −/AC N
K1: GND
K2: OUT2...4
K2: OUT1
K1: GND
K2: OUT2...4
K2: OUT1
K6-2:
DC+/AC L
K6-1:
DC −/AC N
1) RXD (UART digital probe)
2) GND (digital and power)
3) V+: digital probes: 3.3 VDC nominal, analog probes: max. 5.0 VDC, 10 mA
4) AGND (analog ground)
5) Not used
6) One-channel analog probe signal: +0.0 to 3.3 VDC
7) TXD (UART digital probe)
Pin-Out Diagram
Mechanical installation
General recommendations
Relative humidity is extremely temperature-dependent. In order to measure it exactly, the probe and
sensors must be set exactly on the temperature level of the environment that is to be measured.
The installation site can therefore have a signicant inuence on the performance of the device.
Follow the guidelines below to ensure optimum performance:
a) Select a representative installation site: Install the probe at a point where the humidity, tempe-
rature and pressure conditions are representative for the environment that is to be measured.
b) Make sure there is sufcient air movement around the probe: An air ow of at least 1 meter/
second accelerates and facilitates adjustment of the probe to changing temperatures.
c) Avoid:
1. Probe too close to heating elements, cooling coils, cold or hot walls, direct sunlight, etc.
2. Probe too close to steam, injectors, humidiers or direct precipitation.
3. Unstable pressure conditions with high air turbulence.
d) Insert the probe as far as possible into the environment that is to be measured.
e) Avoid accumulation of condensation at the contact wires of the sensor. Install the probe so
that the tip points down. If that is not possible, install it in horizontal position.
Mounting with separated probe
To avoid measurement errors, at least 200 mm of the probe should be inserted into the environ-
ment that is to be measured. If necessary, use the mounting ange AC5005 to install the probe.
Power
Supply
Display modes
The LC display has a backlight which can be set to be on all the time or whenever a key is pressed.
The backlight can also be disabled.
Using the HF8 Menu > Device Settings > Display Settings, the display mode can be changed as
shown below:
Standard 3-line display Large
%RH
Temperature
Date and time
%RH
Temperature
Calculated parameter
No date and time
Both the parameter and
probe can be changed
with the UP arrow key or
the DOWN arrow key
The display can also be congured to show a trend indicator on each line:
▲ increasing value ▼ decreasing value
In the event of an alarm the symbol [ ! ] appears to the right of the value.
The bottom of the display shows the date and time as well as which probe is currently selected.
Keypad
Unit system
Press the MENU key and select Device Settings > Local Settings > Unit Sys. Press ENTER to activate
the Unit Sys menu item, use the [+] or [-] key to change the unit system. Press ENTER to conrm
and press MENU to exit.
The HW4 software can also be used to change the unit system.
Date and time
Press the MENU key and select Device Settings > Date or Time. Press ENTER to activate either
the Date or the Time menu item. Use the [+] or [-] key to change the Date or the Time. After each
change, the cursor moves to the right. When done, press ENTER to conrm and press MENU to exit.
To change either the date or the time format, Press the MENU key and select Device Settings >
Local Settings > Date Fmt or Time Fmt. Press ENTER to activate either the Date Fmt or the Time Fmt
menu item, use the [+] or [-] key to change the Date or the Time format. When done, press ENTER
to conrm and press MENU to exit.
The HW4 software can also be used to set the clock of the HF8 to the PC date and time.
Select the calculated parameter for a probe input
The calculated parameter is available only when the input is set for a digital HygroClip 2 probe.
Press the MENU key and select Device Settings > Input 1 or Input 2 > Calc. Press ENTER to activate
the Calc sub-menu, use the [+] or [-] key to select the calculated parameter. Press ENTER to conrm
and press MENU to exit.
192
52
16
31
22.3
39.5
MENU
Activates the internal menu. Press this key
again to go back to the previous menu or to
exit the menu.
ENTER ✔
• When the menu is active, use to conrm the
selection of a menu item, effect a change of
settings and conrm any change.
• In the HF8 Standard Mode, use to capture the
current %RH and temperature data to one of
8 data bins.
UP / DOWN + / –
• Changes either the probe or the parameter
being displayed (including the delta probe).
• When the menu is active, use to navigate the
menu, make a selection or change a value.
K 3
V+
GND
485+
485–
1 2 3 4
K 1
K 2
GND
GND
GND
GND
OUT1
OUT2
OUT3
OUT4
1
2
3
4
1
2
3
4
K 4
NO
COM
NC
3
2
1
K 5
NO
COM
NC
3
2
1
K 7
NO
COM
NC
K8
NO
COM
NC
3
2
1
3
2
1
1
2
3
K6
DC–/AC N
DC+/AC L
B2
• •
digital in/output