All pressure connections may only be opened after the system is
without pressure!
Warnin
Observe the national regulations about safety and accident prevention , as
well as the safety instructions in this operating manual when operating the
Warnin
Warnin
Attention
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pressure transmitter.
Any operation not described in the following instructions must not be car-
ried out.
If a failure cannot be repaired, the transmitter must be switched off. The
operator must then make sure that it is only switched on again after the
failure has been repaired.
Prior to installing, starting and operating a pressure measuring instrument,
the user must ensure that the appropriate instrument has been selected
with regard to scale range and performance and that the wetted parts
material is suitable for the specific measuring conditions of the respective
application.
Serious injuries and/or damage can occur should the relevant regulations
not be observed.
Dangerous pressure media such as oxygen, acetylene, flammable gases
or liquids and toxic gases or liquids as well as instruments for refrigeration
plants or compressors etc. require attention above the standard regulations. Here the specific safety codes or regulations must be considered.
Contents
Ramaining pressure medium contained in the pressure element may be
hazardous or toxic. This should be considered when handling and storing
Warnin
the removed pressure measuring instrument.
Repairs should only be carried out by the manufacturer. All other repairs or
modifications of the transmitter are unauthorized.
Attention
Other important safety guidelines can be found in the different sections of
this instruction manual.
The UniTrans pressure transmitter can be used in level control applications as well as
for pressure measurement applications in process industr
nections, measurement ran
for a wide ran
2.1Construction
The UniTrans consists of a pressure sensor, a control interface unit and a housin
cover with optional displa
can be mounted (see “Model Ke
2.1.1 Pressure Transducer
The pressure transducer has a piezo-resistive or thinfilm measurement cell depend-
on the pressure range. The sensors are temperature compensated, and have a
in
hermeticall
ducers do not have internal sealin
Pressure transducers further distin
pressure ran
connections can be selected to serve a wide ran
e of applications.
welded membrane which is "helium" leak-tested. The pressure trans-
es and the different materials of wetted parts. Different process
es, main boards and display options result in a product
. Due to this modular design, different transmitter versions
” on page 79).
elements.
uish themselves from one another based on their
e of applications.
. A variety of process con-
Never exceed the overpressure limit of the respective pressure transducer.
The processin
ment and the ke
activated (unlocked) before use. Durin
tect data and functions previousl
is hit for 10 minutes. The processing unit converts the digitalized signal from
no ke
the measurin
Processing Unit
2.1.3 Display Unit
unit, which is integrated in the housing contains the terminal compart-
pad used for programming the transmitter. The four keys must be
unit into a standard 4...20 mA current signal.
Universal Pressure Transmitter UniTrans
Product Description
normal operation the keypad is locked to pro-
entered. The keypad is automatically locked when
CALIBRATION
RANGE
The indicator has four di
ment displa
of measure can be selected b
rectl
bar). Additional information is displa
operator can enter commands in the pro
of menu
The UniTrans is primaril
and tanks. Dependin
bar can be measured. The pressure is measured usin
or relative (a
sensor selected.
The UniTrans is also used for h
pipes and containers.
Process Pressure Measurement:Process Pressure Measurement:
Used to measure pressure of liquidsUsed to measure container pressure.
or gases in pipelines.
ainst external or air pressure) measurement depending on the type of
Universal Pressure Transmitter UniTrans
Product Description
used to monitor the pressure in pipes, technical equipment
on the pressure range pressures between 20 mbar up to 1000
absolute (against a vacuum)
drostatic pressure measurement within liquid filled
Process Pressure Measurement:Process Pressure Measurement:
Installed behind feed pumps for Installed in front of and behind the filter.
process control or monitoring of pump Uses the pressure differential for monifunctions.toring the function or accumulation of dirt
in the filter. Both output signals are processed by a PLC or signal converter.
Integration time0s, 1s, 5s, 20s, 40s, programmable
Adjustment of the spanUp to Turn down 1 : 20
Integrated lightning protectionoptional
Zero point adjustment2.5 ... 99 %
3.3Construction
Universal Pressure Transmitter UniTrans
Technical Data
Process connections
Model UT-10
Model UT-11
Model UT-11 EHEDG version
Materials
Housin
Wetted parts (UT-10)
(UT-11)
Internal transmission fluid
G 1/2 B per DIN 16288 (1/2 NPT)
M 16 x 1,5 with sealin
3/8-24 UNF LH male
1/4"-28 UNF LH M 250-C
G 1Bflush diaphra
G 1/2 Bflush diaphra
G 1 1/2 flush diaphra
G 1flush diaphra
G 1flush diaphra
hi
plastic (PBT); optionall
CrNi-steel 1.4571 and 2.4711
CrNi-steel 1.4571, o-rin
or EPDM}; {Hastello
Standard {Halocarbon oil for ox
applications}; {FDA-approved}
voltage is between 12 and 36 V DC. The power supply and the output sig-
voltage can be supplied by a power unit, a transmitter power supply or by
ested to use a model with integrated lightning protection for preventing dam-
uration.
Published 16.2.04
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Terminal Configuration
Ground
L- suppl
L+ suppl
ITest circuit; connect the ampere meter between terminals L+ and I
The unit must be properl
4.5Pressure Compensation when using a Relative Pressure Sensor
A Goretex diaphram is used to compensate for the atmospheric pressure under the
IP 65 Protection Method.
A special cable with capillaries for relative pressurization is used for In
tion IP 67.
minus (to connect the negative signal line)
plus (to connect the positive signal line)
• Connect an ampere meter to the device’s output (between terminals I and L+).
• Note that after each action, a brief oscillation/deflection of 20 mA occurs (verifica-
tion of a successful action).
The followin
• Zero point adjustment with a full or empt
• Span adjustment with a full or empt
ration time
• Inte
• Reset to manufacturer’s defaults
An error signal is caused by a current surge (21 mA or 3.6 mA; 5 sec) when
the zero point or span setting fall outside of the sensor’s nominal pressure
range during adjustments with existing pressure. No values are stored.
The keypad becomes inactive after 10 min. of disuse. All settings will default to previously stored values. Only settings that have been confirmed
with the "OK" function are stored.
5.2Key Functions (only available for transmitters without display)
rammed before or after installation.
functions can be programmed without a display unit:
Mountin
tion of the sensor
(push simultanousl
Reset to default
(push simultaneousl
s
for 2 sec.)
correc-
for 2 sec.)
for 2 sec.)
Published 16.2.04
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meas
Zeropointcalibration
CalibrationValue
Confirm
Function
(2 sec.)
(2 sec.)
(2 sec.)
024-DS-GB
meas
Calibrationofspan
CalibrationValue
Confirm
Function
(2 sec.)
(2 sec.)(2 sec.)
025-DS-GB
g
5.3Calibration with Pressure
5.3.1 Zero Point Calibration
Make sure that the pressure to be used as the zero point (P 0 %), is
present at the transmitterer diaphragm before calibration.
5.3.2 Span Calibration
Calibration of the measurement ran
Make sure that the pressure to be used as the span end-point (P 100 %) is
present at the transmitter diaphragm. The measuring range between zero
and end value of span is saved as span.
Universal Pressure Transmitter UniTrans
Operation of Transmitters without Display
e (span).
A change in the zero point has no effect on the calibrated span.
However, if the span end-point is higher than the peak value of the sensor’s nominal pressure range, then span end-point is fixed at this peak value and the span is reduced accordingly.
A change in the span setting has no effect on the zero point. The zero point
and span end-point must fall within the sensor’s nominal pressure range.
A mounting correction must not be carried out when making an adjustment
with pressure (wet adjustment). Otherwise, the mounting correction must
be carried out before saving the zero point and the end value of span.
Calibration of span, without display, without pressure
027-DS-GB
current value decreases
Confirm
CalibrationValue
...toI
meas=Icalc
currentvalueincreases
I
calc
=
(2 sec.)
(2 sec.)
Mountingcorrectionofthesensor
049-DS-GB
CalibrationValue
Function
(2 sec.)
(2 sec.)
(2 sec.)
Universal Pressure Transmitter UniTrans
Operation of Transmitters without Display
Example:
A pressure transmitter with 0 ... 400 mbar (nominal pressure) is to be programmed.
The liquid’s surface (with a densit
The maximum (span end-point) should be 3 m. The measurin
of 1) is 1 m above the diaphragm at the zero point.
range (span) is 200
mbar.
I
This means that the output must be set to 12 mA durin
A change in the zero point has no effect on the adjusted span.
However, if the span end-point is higher than the peak value of the
transmitter’s nominal pressure range, then the span end-point is fixed
at this peak value and the span is reduced accordingly.
A change in the span setting has no effect on the zero point. The zero
point and span end-point must fall within the transmitter’s nominal
pressure range.
A test / correction of the zero point is suggested after adjusting the
span in order to maintain optimum accuracy.
Important
A mounting correction should be carried out before or after making an
adjustment without pressure (dry adjustment) (see 5.4.3). The transmitter must therefore be placed in the reference position for the measurement (installation site) without pressure on the diaphragm.
5.4.3 Mounting correction of the sensor
The position of the measurin
cell ist adjusted by simultaneously pressing (2 sec.) the
pad is activated and the device can be programmed by simultaneously press-
The ke
in
the "esc" and "ok" keys (for 2 sec.). This method is used to access the main
menus. Each main menu has one or more sub-menus and each sub-menu, ma
its own sub-menus.
pad (push simultaneously; 2 s)
rammed before or after installation.
forward to next menu
option
back to main menu
without savin
The keypad becomes inactive after 10 min. of disuse. All settings will default to previously stored values. Only settings that have been confirmed
with the "OK" function are stored.
A change in the starting measurement (zero point) has no effect on the
measurement span. Likewise, a change in the span has no effect on the
starting measurement.
An error signal occurs when the zero point or span settings fall outside of
the sensor’s nominal pressure range during calibration with pressure.
Nothing is saved.
*) The density of a medium must
be entered to calculate the correct
fill-level when displaying or adjusting the level in height units (e.g.
mm, m, feet, inch) (see 6.5.6). For
ranges which require over 4 digits
see 2.1.3
**) For volume-based units it is
necessary to enter the reference
value (100% = 0.0,
value range 0 ... 3000).
*)
mbar
bar
PSI
at
kg/cm²
mA
%
mm
mstarting with softinchware version 1.05
feet
Pa
hPa
kPa
MPa
mmWS
mWS
mmHG
**)
l
kg
t starting with softm³ware version 1.05
gal
lb
Adjustment zero point via entry
of a pressure value within the
nominal pressure range
Adjustment span via entry
of a pressure value within the
nominal pressure range
Universal Pressure Transmitter UniTrans
Operation of Transmitters with Display
6.5.2 Main Menu: Calibration of zero and span
A single pressure value is set for the zero point or the span end-point
within the sensor’s nominal pressure range, and assigned to the associated output current signal when making adjustments with existing pressure. An error signal occurs when the existing pressure lies outside of
the sensor’s nominal pressure range. The value is not saved in this
case.
A mounting correction should be performed before or after making an
adjustment without pressure (dry adjustment) (see 6.5.6). The sensor
Important
must therefore be placed in the reference position for the measurement
(installation site) without pressure on the diaphragm.
A mounting correction is unnecessary when making an adjustment with
pressure (wet adjustment). Otherwise, the mounting correction must be
performed before saving the zero point and span end- point.
The current runs between 4 and 20 mA
Alarm condition when limits are reached;
It is necessary to restart device by
using reset or by shutting down power
(see 8.5.6).
The output current is combined with an
assigned offset, which can have a maximum
of 0.4 mA.
Query routine for
additional safety.
033-DS-GB
Published 16.2.04
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MAIN MENU
EVALUATION
EVALUATION
FUCTIONS
EVALUATION
REF. TABLE
REF. POINT
INSERT
REF. POINT
DELETE
INSERT
INSERT
DELETE
DELETE
DELETE
The level value and volume value
always be adjusted or verified in
order to store a value pair.
TABLE
EDIT
TABLE
ACTIVATE ?
EVALUATION
LINEAR
LINEAR
ACTIVATE ?
EVALUATION
DENSITY
Entry of a new value pair
for the table used in
tank linearization
Entry of the level as a %
Entry of the associated
volume as a %
It is possible to enter up to
30 value pairs
The value pair for 0% (P0)
and 100% (P31) are fixed
The selected
tag (value pair)
is deleted
The upper limit
can only be verified, not altered
The lower limit
can only be verified, not altered
Selected tag
(value pair:
level/volume)
is altered
The preset
linearization table
is activated
The linear correlation
between input and
output is set
Enter hei
linearization. The linearization and the assi
areconverted into tank volumes usin
ht values, which are each assigned a volumetric value of measure for tank
When the evaluations function is activated the Turn down becomes
inactiv e
nment of the 4 ... 20 mA output signal
this value pair.
71
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Universal Pressure Transmitter UniTrans
Operation of Transmitters with Display
Please check the following if "Wrong Entry" appears in the Evaluation
menu:
• whether or not more than 32 value pairs are entered in the table for tank
linearization (please note: P 0 and P 31 are fixed at 0% and 100% respectively)
• whether or not an existing height value was tried to be stored again
Please enter correct values.
prices and designs according to chemical seals product range
up to 1600 bar abs, max. medium temperature 60°C
1)
only with aluminum case
1)
only with aluminum case
1)
only with aluminum case
> 1600 bar
> 1600 bar
Ingress protection IP 65
Ingress protection IP 67
standard
1) with accuracy 0.5 % only; max. Turn down 2:1
2) please make sure to consider the max. pressure admissible for your respective high pressure tube
(see manufacturers specification for the high pressure tube)