FlexBar HRT Pressure Transmitter
Safety instructions
This instrument is built and tested ac cord ing to the current EU-directives and packed in technically safe con di tion. In order to main tain this
condition and to ensure safe op er a tion, the user must follow the hints
and warnings given in this instruction.
During the installation the valid national rules have to be observed.
Ignoring the warnings may lead to severe per son al injur y or substantial
damage to property.
The product must be op er at ed by trained staff. Correct and safe
operation of this equipment is de pend ent on proper transport, storage,
installation and op er a tion.
All electrical wiring must conform to local stand ards. In order to prevent
stray elec tri cal radiation, we rec om mend twisted and shielded input
cables, as also to keep power sup ply cables separated from the input
cables. The con nec tion must be made ac cord ing to the connecting
di a grams.
Before switching on the power supply take care that other equip ment
is not af fect ed. Ensure that the supply voltage and the conditions in the
environment comply with the spec i fi ca tion of the de vice.
Before switching off the supply voltage check the possible effects on
other equipment and the processing system.
WAR NIN G
For electrical installation and com mis sion ing of explosion protected
devices, the data given in the con form i ty cer tifi cate as also the local
reg u la tions for installation of elec tri cal apparatus within explosion pro tect ed areas must be considered. The intrinsically safe versions can be
mounted in the explosion hazarded area according to its spec i fi ca tion
only con nect ed to a certifi ed intrinsically safe supply loop with the cor re spond ing electrical values.
This Ex-approved product is manufactured by:
Baumer A/S
Jacob Knudsens Vej 14
DK-8230 Aabyhoej
Denmark
Installation Manualwww.baumerprocess.com
Page 1 Design and specifi cations subject to change without notice
Installation
1)
Factory guarantee is void on mechanical damages on the diaphragm.
Die Werksgarantie erstreckt sich nicht auf mechanische Schäden der Membran.
Les détériorations mécaniques de la membrane ne sont pas couvertes par la garantie .
Mekanisk skade på membranen er ikke omfattet af fabriksgarantien.
Mekaniska skador på trycktransmitterns membran omfattas inte av garantin.
Takuu ei koske käytön aikana tullutta mekaanista vauriota kalvossa.
2)
>22 mm
4)
3)
1 2
4...20 mA 6.5...35 V
+ 1 2 -
+ 1 2 -
- 2 1 +
Opto-relay
4 3
Plug M12
3
dc
Plug
DIN 43650 B
Plug
DIN 43650 A
Installation Manualwww.baumerprocess.com
Page 2 Design and specifi cations subject to change without notice
FlexBar HRT Electronics Module
Screw terminals 1 & 2: 4...20 mA loop
LED, lights during
Auto Zero adjustment
Auto Zero push button
Pin 1 & 2: Connection
of FlexProgrammer
Ground connection
Non-Ex-application, Point-to-point, HART
4...20 mA
230 Vac
3 4
1 2
+ -
24 Vdc
Test terminals:
With a multimeter (R
the loop current can be measured
without breaking the loop.
Screw terminals 3 & 4: Opto-relay
Voltage, standard: max. 230V
Voltage, GL. approval: max. 60V
DC-voltage: max. 50 V
Current, continuous: max. 50 mA
Current, pulse: max. 500 mA
2 1
- +
< 2 Ohm)
i
dc
ac
ac
Resistance Power supply FlexBar HRT pressure transmitter
> 250 Ohms (or master) with FlexView display (optional)
Installation Manualwww.baumerprocess.com
Page 3 Design and specifi cations subject to change without notice
Installation
Unpacking the transmitter
If the transmitter is visibly damaged, it should not be put into operation.
Mechanical installation and cleaning
The pressure diaphragm must not be touched during installation.
Cleaning with pressurised cleaners and tools may damage the
diaphragm (Fig.1).
Precautions prior to the installation:
If the transmitter has a 1/2" threaded neck, check before mounting
in a blind hole that the thread length is at least 22 mm (Fig.2). Use
a gasket ø28.6 x ø21.5 mm, made from a material proof against the
measuring medium, and do the clamping with an NV27 mm engineer's
wrench. FlexBar HRT can be mounted on a Baumer pressure gauge
connection type no. 81 26-92X (see data sheet).
For a correct 3A installation refer to page 7.
Mounting the pressure transmitter in closed systems (e.g. a stop cock)
can create over pres su re in excess of that permit ted (400%), which
could deform the diaphragm and damage the pressure sensor.
The transmitter must not be exposed to pressure or surge exceeding
4 x span, max. 600 bar though.
The freezing point of process media and condensates must be
checked to prevent unintentional pressure rise when it is freezing.
Radiated heat may create excessively higher opera ting tempera tures
than the allowed -10...70°C (14...154°F).
The correct zero point pressure must be established prior to adjusting the zero point. Tank and pressure transmitter must have the same
temperature. If the pressure trans mit ter has a relative measuring cell
from 0 bar, the zero point pressure is the same as the atmospheric
pressure or the level in a tank selected as zero point level. A pressure
transmitter measuring absolute pressure has a zero point lower than 1
mbar abs.
When the required zero point pressure has been established, the Zero
push button inside FlexBar must be pressed and held. The LED will
respond with one blink per second. When the actual zero pressure
level has been stored in the memory of the FlexBar the LED will blink
twice a second.
You can revert to the zero point correction set by Baumer by reconfi guring the FlexBar HRT with the FlexProgrammer.
The pressure transmitter can change zero point slightly, owing to
mechanical tension
and the fi tting direction selected for the pressure diaphragm. Optimal
results are therefore achieved if the zero point is adjusted after the
pressure transmitter has been mounted in place.
Electrical installation
Suitable cables should be used to secure maximum tightness in the
gland. For models having a plug for electrical connection the inner part
of the plug must be oriented in a way so that the opening is turning
downwards (Fig4).
To avoid measuring errors resulting from insuffi cient supply voltage,
the transmitter must be supplied with min. 6.5 V
The transmitter has a high immunity against high-frequency interference. In environments with a high radiation we recommend to use
screened and twisted cable (Fig. 3).
at 23 mA.
dc
Installation procedure
a) Remove protection-cap.
b) Install FlexBar.
(G1/2A versions: Tighten up at 20 Nm.)
c) Confi gure Span by the FlexProgrammer or a HART
confi gurator.
d) Connect the power supply, press and hold the Auto Zero button
or use the facility in the FlexProgrammer or the HART confi gurator.
Adjusting the zero point
With FlexBar HRT the electronic zero point can be adjusted from
-10...10% of the total measuring range.
Disposal of product and packing
According to national laws or by returning to Baumer
Ex-Confi guring Warnings
None of the two types of FlexProgrammer confi guring unit must be
connected to the FlexBar HRT within the hazardous area.
Confi guring procedure:
a) Disconnect mains from the 4...20 mA loop circuit.
b) Disconnect the FlexBar HRT from the circuitry within
the hazardous area.
c) Uninstall and bring the FlexBar HRT to the safe area.
d) Connect the FlexProgrammer and perform the
confi guring session.
e) Re-install the FlexBar HRT in the hazardous area.
f) Connect the power supply to the circuit.
Confi guration of the FlexBar HRT can be made within the hazardous
area by means of the handheld confi gurator model 275, providing the
precautions and guidelines described in the product´s manual are
observed.
WAR NIN G
This product contains no replaceable parts.
In case of malfunction the product must be shipped to Baumer for
repair.
WAR NIN G
Products with painted and/or plastic surfaces (e.g. display) imply a risk
of electrostatic charging.
To prevent electrostatic hazard - do only clean with a moist cloth.
After mounting the device - do check that the housing has a ground
potential.
Installation Manualwww.baumerprocess.com
Page 4 Design and specifi cations subject to change without notice
Ex ia IIC T5/T6, ATEX II 1G
Ex-data
Supply range 6.5...30 VDC
Internal inductivity L
Internal capacity C
< 10 µH
i
< 1 nF
i
Barrier data U < 30 VDC ; I < 0.1 A ; P
Temperature class T1...T5: -10 < T
T6: -10 < T
< 0.75 W
< 70°C
amb
< 50°C
amb
Ex ia - Installation
A FlexBar HRT with the type number 81 6x2 xxx xxxx is Ex ia IIC
T5/T6 and ATEX II 1G approved for application in hazardous areas in
accordance with the current EU-directives.
A certifi ed Ex ia or isolation barrier with the maximum values
U
= 30 VDC ; I
max
= 0.1 A ; P
max
= 0.75 W must be used.
max
Zone 0/1 Safe area
Opto-relay
Voltage, standard Max. 230 VAC
Voltage, GL-approved Max. 60 VAC
DC-voltage Max. 50 VDC
Current, continuously Max. 50 mA
Current, pulse Max. 500 mA
Relay function Set/reset
If the FlexBar HRT has the relay option (type numbers 81 62 xxxx
xxxx and 81 64 xxxx xxxx) the connections to the relay must be carried
out according to the rules for an intrinsically safe installation.
The FlexBar HRT must be connected in the 4...20 mA loop circuit only.
230 VAC
3 4
Relay
4..20 mA
FlexBar HRT
with relay and cover
Lamp
1 2
+ -
3
4...20 mA
24 VDC
4
1
2
Zone 0/1 Safe area
230 VAC
3 4
- +
1 2
+ -
4...20 mA
24 VDC
Barrier FlexView display Power
(Optional) Supply
Installation Manualwww.baumerprocess.com
Page 5 Design and specifi cations subject to change without notice
Ex nA II T4/T5, ATEX II 3G
Ex-data
Supply range 6.5...35 VDC
Temperature class T1...T4: -10 < T
T5: -10 < T
< 85°C
amb
< 60°C
amb
Ex nA - Installation
A FlexBar HRT with the type number 81 6x3 xxx xxxx is Ex nA II
T4/T5 and ATEX II 3G approved for application in hazardous areas in
accordance with the current EU-directives.
The FlexBar HRT must be installed in accordance with prevailing
guidelines for zone 2 without a barrier.
Electrical Connection
Electrical Connection Cable diameter Torque
mm Nm
Gland M20, plast 8...13 8
Plug DIN-B 6...8 4
Plug DIN-A 8...10 3
Gland M16 3...9 8
Plug M12 - 4
Opto-relay
Voltage, standard Max. 230 VAC
Voltage, GL-approved Max. 60 VAC
DC-voltage Max. 50 VDC
Current, continuously Max. 50 mA
Current, pulse Max. 500 mA
Relay function Set/reset
If the FlexBar HRT has the relay option (type numbers 81 62 3xxx
xxxx and 81 64 3xxx xxxx) the connections to the relay must be carried
out according to the rules for an intrinsically safe installation.
The FlexBar HRT must be connected in the 4...20 mA loop circuit only.
Warning: If the FlexBar HRT is to be installed in ambient
temperature exceeding 70°C a proper cable should be installed.
Ex nA - Installation
230 VAC
- +
FlexBar HRT FlexView display Power
(Optional) Supply
- +
4...20 mA
+ -
24 VDC
Installation Manualwww.baumerprocess.com
Page 6 Design and specifi cations subject to change without notice
Mounting of 3A Approved Products
Max. ± 85°
1)
2)
3)
Installation of 3A approved products:
1) Use only a 3A approved counter part.
2) The inspection hole should be visible and drained.
3) Mount the instrument in a self drained position.
4) Level the inner surface of the pipe with the counter part.
5) Weldings should be grinded to Ra= 0.8
4)
5)
Max. ± 175°
Refer to the data sheet “FlexBar Accessories” for O-rings, gaskets and
other accessories.
Installation Manualwww.baumerprocess.com
Page 7 Design and specifi cations subject to change without notice
5850-007_UK/2007-10-03/Rev. A1 This data sheet may only be reproduced in full.
Installation Manualwww.baumerprocess.com
Page 8 Design and specifi cations subject to change without notice
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