Huba Control 713 User manual

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311 1
713
Level sensing pressure transmitter
Operating instructions

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311
English
General Notes
Dear customer,
for reasons of clarity the instructions does not contain detailed information
about all types of products and cannot take into account every conceivable
case of installation, operation or maintenance.
If you require further information or should problems occur which are not
sufficiently explained in the instructions, you can consult our homepage
www.hubacontrol.com to obtain the necessary information.
May we also draw your attention to the fact that the contents of the operating
instructions are not part of a previous or existing agreement, approval or legal
relationship or an amendment thereof. All obligations of the Huba Control AG
result from the contract of purchase which also contains the full and solely
valid warranty agreement. These contractual warranty conditions are neither
extended nor restricted by the contents of the operating instructions.
Intrinsically safe devices lose their license as soon as they are operated on cir-
cuits which do not meet the requirements of the examination certificate valid
in your country. The device may be operated with high pressure and corrosive
media. Therefore serious injuries and/or considerable material damage cannot
be ruled out in the event of improper handling of the device.
The equipment may only be used for the purposes specified in this
operating instructions.
CAUTION

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311 3
(1) YYMMDD - example 100912
The date of manufacture can be seen on the label of the
pressure transmitter, for example: YYMMDD-XXX-XX-XXXX
Date as ıyear-month-day„
3 digits of the order number
Order position
Single part number
(1)
Construction
The level sensor consists of a ceramic measuring cell (relative and absolute
pressure) with an amplified electronic and is adjusted in the requested pressu-
re range. The sensor, the electronic and the connection cable are hermetically
encapsulated in a stainless steel case. The measuring diaphragm is protected
from outside influences by a protection cover. A venting pipe is included in the
connection cable with humidity protection element for the relative version. The
wide temperature range of the level sensor is compensated.
Mode of operation
The pressure of the medium acts on the keramic sensor which is deflected to
transmit the pressure to the piezo-resistive bridge in the measuring sensor.
The output signal of the sensor is fed to an electronic circuit which converts
it into a standard voltage and current output. The hydrostatic pressure which
is proportional to the submersion depth acts on the diaphragm of the sensor.
This pressure is compared with the atmospheric pressure (at relative pressure).
Field of application
The level sensor type 713 is generally used for hydrostatic level measurement.
All liquids specified in the data sheet are suitable for this sensor (no solids and
frozen media). For further media the user is responsible to check the compati-
bility with the parts in contact with the medium.
Serial number setup

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311
Instructions for mounting
Qualified Personnel
are persons familiar with the insallation, assembly, commisioning and ope-
ration of the product and who have the appropriate qualifications for their
activities such as:
training or instruction or authorization to operate and maintain devices/
systems according to the standard of safety technology for elecrical
circuits, high pressures and corrosive as well as hazardous media.
training or instruction according to the standards of safety engineering in
the care and use of suitable safety equipment.
Only trained qualified personnel shall execute this work.
Modules which are sensitive to electrostatic charge may be destroyed by
voltages which are far below the human level of perception. These voltages
occur already when you touch a component or electrical connections of a
module without first discharging yourself electrostatically. The damage in-
curred by a module as a result of an overvoltage is not usually immediate-
ly perceptible but only becomes noticeable after a long time in operation.
Therefore, a suitable equipotential bonding must be guaranteed when repai-
ring the device.
Installation
The level pressure transmitter 713 is ins-
talled hanging downwards on the cable.
In moving media, the transmitter must be
fixed to prevent measuring errors. This can
be done with a guide tube. Make sure that
the inlet openings on the protective cap of
the level pressure transmitter are not soiled
in order to guarantee perfect functioning.
h - Fluid level
- Measurement reference height

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311 5
Operating conditions
The following points should be noted particularly when using the device:
The maximum permissible pressure pmax of the transmitter may not be
exceeded.
The temperature of the medium in contact with the transmitter may
not exceed +80ÀC.
Avoid formation of ice on the process input of the transmitter because
this could damage the diaphragm.
Prevent soiling of the transmitter input.
Avoid obstruction to the vent pipes in the special cable (influences the
measuring accuracy).
Consider the chemical resistance of sensor, case, O-ring and connection
cable with the media.
Connect the sensor to a low voltage power supply with safe separa-
tion (SELV).
Electrical connections
The electronic GND is connected with a 1MΩÃresistor to the level transmitter
housing.
The case connection is connected with the level
transmitter housing.
digital
Communication interface version digital
https://www.hubacontrol.com/fileadmin/user_upload/domain1/Produkte/
DE_EN_FR/713_app_note.pdf
brown
white
green
brown
white
green
brown
white
green
yellow
brown
white
green
with temperature

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311
Technical overview
Medium Groundwater, drinking water
Temperature Medium -20 ... +80 ÀC
Storage -40 ... +80 ÀC
Overload / rupture pressure see Order code selection table in the data sheet
Output Power supply Load
4 ... 20 mA 10 ... 30 VDC Power supply - 10 V [Ohm]
ratiom. 10...90% 5 VDC μ10% > 10 kOhm / < 100 nF
Temperature output 5 VDC μ10% > 1 MOhm / < 100 nF
Digital version
Digital 3000 ... 11000 digits 5 VDC μ10%
Polarity reversal Short circuit proof and protected against polarity
protection reversal. Each connection is protected
against crossover up to max. supply voltage.
Protection standard IP 68, permanent immersion until max. over pressure
(see Order code selection table in the data sheet)
Protection class III
Maintenance
The level transmitter requires no maintenance.
Calibration
The transmitter has been calibrated to the measuring range at the factory and
not have to be re-calibrated.
0.02 A

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311 7
Calculation of level
General level with relative pressure sensor:
General level with absolute pressure sensor:
which
und
Using a second level sensor as barometric air pressure sensor
For level sensor with current output use nominal signal values for ITS ... instead of
variables UTS ... (resp. IBaro ... instead of UBaro ...)
Simplification of formula for level sensor with ratiometric output:
Using a second level sensor as barometric air pressure sensor
Legend:
h level [m] ρdensity of media [kg/m3]
g acceleration of fall 9.80665 [m/s2]∆p measured relative pressure [Pa]
PTS measured pressure of level sensor [Pa] UTS signal on level sensor output [V or mA]
PBARO measured pressure of barometer [Pa] UBARO Signal on barometer output [V or mA]
PTS_NP minimal nominal pressure of level sensor [Pa] UTS_NP minimal nominal signal of level sensor [V or mA]
PTS_EW maximum nominal pressure of level sensor [Pa] UTS_EW maximum nominal signal of level sensor [V or mA]
PBARO_NP minimal nominal pressure of barometer [Pa] UBARO_NP minimal nominal signal of barometer [V oder mA]
PBARO_EW maximum nominal pressure of barometer[Pa] UBARO_EW maximum nominal signal of barometer [V or mA]

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311
a + b •In •+ c •In •
3
OUT T OUT T
-50ºC
255
TDig 200ºC
Specification temperature output
ratiom. 10 ... 90%
TTEMP Sensor temperature [ÀC] OUT T Sensor signal [V]
T0-273.15 [ÀC] R 20'000 [Ω]
U
IN power supply 5V μ10%
a 0.001204001
b 0.000208775
c 0.000000294
Digital
TTEMP Sensor temperature [ÀC]
TDig digital value (0 ... 255 digits)

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Huba Control AG - Industriestrasse 17, CH-5436 Würenlos - Edition 08/2017 - 120311 9
Huba Control AG ăHeadquarters Schweiz
Industriestrasse 17, 5436 Würenlos
Telefon [phone]
Telefax [phone]
[email protected]
Huba Control AG ăNiederlassung Deutschland
Schlattgrabenstrasse 24, 72141 Walddorfhäslach
Telefon [phone]
Telefax [phone]
[email protected]
Huba Control SA ăSuccursale France
Rue Lavoisier, Technopôle Forbach-Sud
57602 Forbach Cedex
Téléphone [phone]
Télécopieur [phone]
[email protected]
Huba Control AG ăVestiging Nederland
Hamseweg 20A, 3828 AD Hoogland
Telefoon [phone]
Telefax [phone]
[email protected]
Huba Control AG ăBranch Office United Kingdom
Unit 13 Berkshire House
County Park Business Centre
Shrivenham Road
Swindon - Wiltshire SN1 2NR
Phone [phone]
Fax [phone]
[email protected]