ROTRONIC HF4 - Manual

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ROTRONIC AG, CH-8303 Bassersdorf
Tel. +41 44 838 11 44, www.rotronic.com
ROTRONIC Messgeräte GmbH, D-76275 Ettlingen
Tel. +49 7243 383 250, www.rotronic.de
ROTRONIC SARL, 56, F - 77183 Croissy Beaubourg
Tél. +33 1 60 95 07 10, www.rotronic.fr
ROTRONIC Italia srl
, I- 20157 Milano
Tel. +39 2 39 00 71 90, www.rotronic.it
ROTRONIC Instruments (UK) Ltd, West Sussex RH10 9EE
Phone +44 1293 571000, www.rotronic.co.uk
ROTRONIC Instrument Corp, NY 11788, USA
Phone +1 631 427-3898, www.rotronic-usa.com
ROTRONIC South East Asia Pte Ltd, Singapore 339156
Phone +65 6294 6065, www.rotronic.com.sg
ROTRONIC Shanghai Rep. Offi ce, Shanghai 200233, China
Phone +86 40 08162018, www.rotronic.cn
A
Digital transmitter for humidity & temperature
Duct & Wall Version
Congratulations on your purchase of the new state-of-the-art HygroFlex4-series transmitter. Please
read these short instructions carefully before installing the device
General description
The HygroFlex4-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
Duct version
Wall version
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 signifi cant infl 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, tem-
perature and pressure conditions are representative for the environment that is to be measured.
b) Make sure there is suffi cient air movement around the probe: An air fl ow of at least 1 metre/
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, humidifi 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 the duct version
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 fl ange AC5005 to install the probe and fasten the transmitter.
AC5005 Mounting fl ange
for 15 mm probe
Models with digital HF45x connection
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) HF42 (2-wire, current loop): 10 to 28 VDC – depending on the connected load. The minimum
supply voltage can be calculated as follows. V min = 10 V + (0.02 x load*) *Load (resistance in
Ohm). The minimum supply voltage for the maximum load of 500 Ohm is: 10 + (0.02 x 500) =
20 VDC. When both outputs are connected, the maximum current consumption is 40 mA.
b) HF43 (3-wire with analogue outputs): 5 to 40 VDC or 5 to 28 VAC. When both outputs are con-
nected, the maximum current consumption is 50 mA.
c) HF45 (3-wire with digital output: 5 to 40 VDC or 12 to 28 VAC. Maximum current consumption:
USB 50 mA, Ethernet (TCP/IP) 300 mA.
Supply voltage / Technology
Type
Supply voltage V+ Load Output
2- or 2x2-wire
HF420
10...28 VDC: 10 V + (0.02 x load) Max 500 Ω 4...20 mA
3 / 4-wire
HF431
15...40 VDC / 12...28 VAC Max 500 Ω 0...20 mA
HF432 15...40 VDC / 12...28 VAC Max 500 Ω 4...20 mA
HF433 5...40 VDC / 5...28 VAC Min 1000 Ω 0...1 V
HF434 10...40 VDC / 8...28 VAC Min 1000 Ω 0...5 V
HF435 15...40 VDC / 12...28 VAC Min 1000 Ω 0...10 V
Digital output
HF456
15...40 VDC / 12...28 VAC Digital output
Caution: Wrong supply voltages and excessively high loading of the outputs can
damage the transmitter.
Terminal confi guration / Connection diagrams
The type is defi ned using the table Supply voltage / Technology to then use the following connec-
tion diagrams:
2- or 2x2-wire / HF420
Terminal Description
K2-2-T-OUT
Analogue temperature output +
K2-1-V+ Supply voltage +
K1-2-H-OUT Analogue humidity output +
K1-1-V+ Supply voltage +
3 / 4-wire circuit / HF43x
Terminal Description
K1-1 GND K6-1 GND GND / Neutral
K1-2 V+ K6-2 V+ Supply voltage +/Phase
K1-3 K6-3 Earth
K2-4 GND GND
K2-3 GND GND
K2-2 OUT2 Analogue temperature output + *
K2-1 OUT1 Analogue humidity output + **
Analogue and digital output / HF45x
Analogue and digital
Digital
Terminal Description
K1-1 GND
GND / Neutral
K1-2 V+ Voltage supply +/Phase
K1-3 Earth
K2-4 GND GND
K2-3 GND GND
K2-2 OUT2 Analogue temperature output + *
K2-1 OUT1 Analogue humidity output + **
K3-4 D- RS-485 Bi-directional TX- / RX -
K3-3 D+ RS-485 Bi-directional TX+ / RX +
K3-2 GND GND
K3-1 PWR DC (+) 15…40 VDC (+) See remarks below
* For humidity and calculated value output settings:
OUT2 = calculated value, OUT1 = humidity
** For temperature and calculated value output settings:
OUT1 = calculated value, OUT2 = temperature
Terminal K1-3: Earth is usually connected to GND. If this is not wanted, a land (B18) on the PCB
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 K1-1 to K1-3 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.
Display
In models with LC display the value can be read directly.
Button MENU: open / close menu
Button ENTER: select menu point
Menu navigation
Buttons + / - change value: increase/decrease
Note: Unauthorised use of the menu can be prevented by locking the setting “Display Menu”
(using the HW4 software > Device Manager > Display).
The main menu points
Main menu
Menu points Options / Information Remarks
Decive Settings
Units °C / °F Temperature /
dew or frost point
Back Light Key Press / On / Off Display
backlight mode
Device Information
Version Firmware version
Serial No. Serial number
Address RS-485 adress
Type Device type
Sources of error
Measured values can be infl uenced by the following factors:
Temperature errors :
Adaptation time too short, cold outside wall, heating elements, sunlight, etc.
Humidity errors:
Steam, water spray, dripping water or condensation at the sensor, etc. Repeatability and long term
stability are, however, not infl uenced by these factors even if the probe is exposed to high humidity
or saturation with steam (condensation) over a longer period of time.
Soiling:
By dust in the air. The choice of probe fi lter depends on the amount of soiling at the measuring
point. The fi lter must be cleaned or replaced periodically.
Scaling / Adjustment / Firmware update
The following settings can be made with the help of the HW4 software and either the service cable
AC3006 or AC3009:
• new scaling of the outputs
• adjustment
• fi rmware update
You can fi nd a detailed description in the manual that you can download from our web site at
www.rotronic-humidity.com
Periodic calibration of the probe / transmitter
Both the Pt 100 RTD temperature sensor and the corresponding electronics are very stable and do
not normally need to be changed or calibrated after factory calibration. The long term stability of the
ROTRONIC Hygromer
® humidity probes is typically better than 1 %rh per year. For maximum accuracy
we recommend calibration of the probe about every six to 12 months. More frequent calibration
can be necessary in applications where the sensor is exposed to pollutants. The calibration can
be performed by the user himself on site or in the laboratory / workshop. For routine calibrations
the probe should be checked at one or two points.
The electronics of the transmitter do not normally require calibration in the fi eld. They can be
checked easily with the help of the probe simulator in the HW4 software package. The electronics
cannot be repaired in the fi eld and should be returned to the manufacturer in the case of problems.
For details on calibration, please see the full version of the instruction manual, which you can
download from the internet.
Technical data (measurement)
Humidity: 0...100 %rh
Temperature: –50...100 °C
Accuracy: ±1 %rh, ± 0.1 K @ 23°C
Protection: IP65 except for models with USB and Ethernet interface
Outputs: Current or voltage signals, digital output depending on order code,
UART service interface
Technical data (operation)
Temperature:
–40...60 °C / Models with display –10...60 °C
Humidity: 0...100 %rh, non-condensing
Current output
Voltage output
SHORT INSTRUCTION MANUAL
= ~
K1: V+
K1: GND K2: GND
K2: OUT1
K2: OUT2
K1: V+
K1: GND K2: GND
K2: OUT1
K2: OUT2
T – OUT
V +
H – OUT
V +
K 2
K 1
2
1
2
1
K 2
GND
GND
OUT2
OUT1
4
3
2
1
3 2 1
GND V +
K 6
K 1
GND
V +
1
2
3
OUT 1 = %RH
OUT 2 = °C/F
USB or TPC/IP
K 1
GND
V+
1
2
3
D –
D +
GND
PWR
4
3
2
1 K3 D –
D +
GND
PWR
4
3
2
1 K3
K 1
GND
V+
1
2
3
USB
K 2
GND
GND
OUT 2
OUT 1
4
3
2
1
12.0839.0005_Manual HF_4 Wand_Kanal_dt_en_fr_it.indd 1 26.06.2013 09:00:42