ROTRONIC HF7 - 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 Instruments Pte Ltd, Singapore 159836
Phone +65 6376 2107, www.rotronic.sg
ROTRONIC Shanghai Rep. Office, Shanghai 200233, China
Phone +86 40 08162018, www.rotronic.cn
A
Digital transmitter for humidity & temperature
Duct, wall and cable Version
Cable-version (Type C)
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 significant influence 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.
Wall-version (Type W)
Drill template for all types Service interface
Congratulations on your purchase of the new state of the art HygroFlex7-Series transmitter.
Please read these short instructions carefully before installing the device
General description
The HygroFlex7-Series devices are universal transmitters for transmission of humidity and tempe-
rature measurements. 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
Service interface
(Mini-USB)
Duct-Version
(Type-D) for ø 15 mm probe
(Type-A) for ø 25/15 mm probe
(Type-D) for ø 15 mm probe
AC5005 Mounting flange
for 15 mm probe
b) Make sure there is sufficient air movement around the probe: An air flow 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, humidifiers 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.
Mount the transmitter so that the
probe points down. 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 the duct version type-A / -D / -C
To avoid measurement errors, at least 200 mm of the probe should be inserted into the environment
that is to be measured. If necessary, use the mounting flange AC5005 (only for type-D and type-C)
to install the probe and fasten the transmitter.
Electrical installation
General wiring guidelines
Heavy machinery and instrumentation should not share the same power supply wiring. If this
cannot be avoided, noise filters and surge protectors should be used. Most UPS devices have
those features already integrated.
Lightning protection
Cabling in areas with a risk of lightning requires a lightning protection. For cabling underground
in between buildings, we recommend the use of special fiber optic cables. If this is not possible,
use copper cables that are suitable for underground installation.
Cable grip and cable specifications
The HF7 is supplied either with one M16 sealing cable gland or with a ½” conduit adapter. The M16
cable gland provides effective sealing only with cables having the proper outside diameter. Pre-
ferably, use a cable with an outside diameter of 6 to 7 mm (0.236 to 0.275 inch) with 18 AWG wires.
Grounding
We generally recommend grounding the (-) side of the power supply, especially if the electronics
will be subjected to a low humidity environment (35 %rh or less).
Power supply
HF72: (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.
HF73: (3-wire with analogue outputs): 5 to 40 VDC or 5 to 28 VAC. When both outputs are connected,
the maximum current consumption is 50 mA.
Caution: Wrong supply voltages and excessively high loading of the outputs can
damage the transmitter.
Terminal configuration / Connection diagrams
The type is defined using the table Supply voltage / Technology to then use the following con-
nection diagrams:
2- or 2x2-wire / HF720
Terminal Description
K1-1-H+V
Supply voltage +
K1-2-H_OUT Relative humidity or dew point output +
K1-3-T+V Supply voltage +
K1-4-T_OUT Temperature output +
3 / 4-wire circuit / HF73x
Klemme Tuchel connector Beschreibung
K1-1 OUT1 6 Analogue humidity-/dew point output +
K1-2 OUT2 4 Analogue temperature output +
K1-3 GND 3 and 5 Analogue GND
K2-1 PWR 1 Supply voltage + / Phase
K2-2 GND 2 GND / Neutral
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. Display settings can only be changed
with the HW4 Software.
Sources of error
Measured values can be influenced 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 influenced 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 filter depends on the amount of soiling at the measuring
point. The filter 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
• firmware update
You can find a detailed description in the manual that you can download from our web site at
www.rotronic.com
Periodic calibration of the probe / transmitter
Both the Pt100 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 sensors 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 field. They can be checked easily with the help of the probe simulator in
the HW4 software package. The electronics can not be repaired in the field 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.
Cleaning or replacing the dust filter (optional)
Depending on the conditions of measurement, the filter should be checked from time to time.
Corroded, discolored or clogged filters should be replaced. The probe of the HF7 has a removable
filter cartridge. Simply replace the cartridge (leave the metal base on the probe).
Technical data (measurement)
Temperature / Humidity
Typ W / A -100…100 °C / 0…100 %rh *
Typ D -100…150 °C / 0…100 %rh
Typ N -100…200 °C / 0…100 %rh *
* With PPS probe -100…200 °C / 0…100 %rh
Accuracy
±1.0 %rF, ± 0.2 K @ 23 °C
Protection IP65 unflamable
Output Current or voltage signals
Technical data (operation)
Temperature
-40...85 °C / -10...60 °C with display
Humidity 0...100 %rh, non-condensing
Filter Filter carrier
(Type-A) for ø 25/15 mm probe
Mounting the wall version type-W
Alignment Mounting
(see drill template for all types)
T+V
T_OUT H_OUT
H+V
H + V
H _ OUT
T + V
T _ OUT
K 1
1
2
3
4
= ~
K2: PWR
K2: GND K1: GND
K1: OUT1
K1: OUT2
K2: PWR
K2: GND K1: GND
K1: OUT1
K1: OUT2
PWR
GND 2 1
GND
1
2
3 OUT1
OUT2
Supply voltage / Technology
Type
Supply voltage V+ Load Output
2- or 2x2-wire
HF720
10...28 VDC: 10 V + (0.02 x load) Max 500 Ω 4...20 mA
3 / 4-wire
HF731
15...40 VDC / 12...28 VAC Max 500 Ω 0...20 mA
HF732 15...40 VDC / 12...28 VAC Max 500 Ω 4...20 mA
HF733 5...40 VDC / 5...28 VAC Min 1000 Ω 0...1 V
HF734 10...40 VDC / 8...28 VAC Min 1000 Ω 0...5 V
HF735 15...40 VDC / 12...28 VAC Min 1000 Ω 0...10 V
OK
OK
Current output
Voltage output
SHOrT inSTruCTiOn MAnuAL