Baumer PFMH User Manual
Operators instructions
CombiPress™, type PFMx
CombiPress™ PFMx high end pressure transmitter is made for
measuring pressure in all gaseous and liquid processes, within
ranges from full vacuum (-1 bar) to 400 bar gauge.
Safety instructions
This instrument is built and tested according to the current EUdirectives and packed in a technically safe condition. In order to maintain this condition and to ensure safe operation, 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 personal injury or substantial
damage to property.
The product must be operated by trained staff. Correct and safe operation of this equipment is dependent on proper transport, storage, installation and operation.
All electrical wiring must conform to local standards. In order to prevent
stray electrical radiation, we recommend twisted and shielded input
cables, as also to keep power supply cables separated from the input
cables. The connection must be made according to the connection diagrams.
Before switching on or off the power supply take care that other equipment is not effected. Ensure that the supply voltage and the conditions
in the environment comply with the specification of the device.
Description
The CombiPress™ PFMN industrial and PFMH hygienic version pressure transmitter is a high end programmable instrument for
measuring pressure from full vacuum to 400 bar gauge pressure or 0 to 400 bar absolute pressure.
CombiPress™ series are supplied to industrial applications with threaded connections or with hygienic connections for hygienic
applications. All wetted parts are in stainless steel AISI 316L (or better). The connection can be mounted as bottom connection or
as rear connection.
PFMx is powered by a 10…35 VDC power supply, featuring an analogue 4...20 mA output signal. A version with 4...20 mA signal
with HART® and an ATEX-version is available.
The CombiPress™ can be mounted with or without a display. The version with display utilizes the Baumer CombiView™ DFON
display, which is connected to the transmitter via the internal UnitCom ribbon cable. The DFON is supplied with power and a digital
signal for measured value, programming etc., which is more reliable and with better accuracy, than using a 4…20 mA loop. In
instruments with UnitCom both the transmitter and display can be programmed at the same time or separate programming of each
device can be selected.
The DFON has a unique background colour setting. Three colours are available – White / Red / Green and further the red and
green colour can be set as flashing as a warning.
The DFON has two integrated galvanic separated relays. The instrument can be delivered with or without activated relays. If supplied without activated relays, those can be activated by purchasing a license code from Baumer. By entering the code to the instrument via the FlexProgrammer the relays are enabled.
The DFON can be programmed by the touch screen on the display or by the FlexProgrammer 9701 Baumer programming unit with
the Baumer FlexProgram installed on a PC.
www.baumer.com
Operators instructions: 11120948 PFMx Page 1 / 12
EN/20131117 Design and specifications subject to change without notice
Operators instructions
CombiPress™, type PFMx
Warning
The diaphragm Don’t No high Use no
is very sensible toutch pressure tools
and easy to destroy cleaning
Mounting
Factory guarantee is void on mechanical damage
of the diaphragm
Don’t touch the diaphragm
Always put on the protection cap if removing
the instrument from the application
Don’t use a high pressure cleaner on the dia-
phragm
Don’t use any tools on the diaphragm, only a
soft brush may be used.
Installation of 3A approved and EHEDG certified 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) Welding's should be grinded to Ra= 0.8
Tighten the connection with a torque of:
PFMN G½A/G1A 20 Nm
WARNING
Cannot be
drained
Fitted
incorrect
Example
with 8126928
Example
with 8126916
After installation and configuration
Check the leak tightness between the welding
sleeve and the instrument
Check the tightness of glands or M12 plugs.
Check the tightness of the instrument cover
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Leakage indication hole
must be placed downwards
Operators instructions: 11120948 PFMx Page 2 / 12
Operators instructions
CombiPress™, type PFMx
Dimensions
Housing Housing Housing
Diameter Bottom connection Rear connection
Connections for industrial pressure transmitter PFMN
Connection 41 Connection 44 Connection with
G½A G1 conical cooling neck
High temperature types
Standard High temp. LCN:
Code 41 → Code 71 77 mm
Code 44 → Code 74 89 mm
Connections for hygienic pressure transmitter PFMH
Connection 50 Connection 51 Connection 54 Connection with
3A DN 38 ISO 2852 DN 38 ISO 2852 DN 51 cooling neck
High temperature types
Standard High temp. LCN:
Code 51 → Code 81 51 mm
Code 54 → Code 84 51 mm
Connection 56 Connection 61
3A DN 76 Variline® type N
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Operators instructions: 11120948 PFMx Page 3 / 12
Installation
Operators instructions
CombiPress™, type PFMx
If the transmitter is visibly damaged, it should not be put into
operation.
The pressure diaphragm must not be touched during installation. Cleaning with high pressure cleaners and tools may damage the diaphragm.
If the transmitter has a G½A connection, check before mounting that the depth of the hole is at least 20 mm.
For correct installation in 3A connections please see page 2.
Mounting the pressure transmitter in a closed system (e.g. a
valve) may create overpressure higher than permitted, which
can deform and damage the diaphragm.
Measuring ranges and over pressure safety
Cell range, bar 0...0,345 -1...1 -1...5 -1...20 -1...34 -1...68 -1...400
Over pressure 1 3 15 60 70 135 690
Burst pressure 2 6 30 120 170 270 1.350
The freezing point of the filling liquid must not be exceeded
White oil -10°C
Silicone oil -40°C
The maximum temperature for the filling liquid is 200°C.
Though the maximum temperature is limited by the mechanical
construction for standard connection to 125°C.
During CIP the temperature may reach 150°C for max. 1 hour.
Installation procedure
The pressure transmitter can change zero point slightly, owing to
mechanical tension and the fitting 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 in the application.
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.
To avoid measuring errors resulting from insufficient supply voltage, the transmitter must be supplied with min. 10 VDC at 23
mA. When mounted with DFON display the minimum voltage will
be 14,5 or 16,5 VDC, depending on the setting of the background light.
The transmitter has a high immunity against high-frequency interference. In environments with a high radiation it is recommended to use screened and twisted cable.
Accuracy, turn down
The specifications for accuracy apply to full scale (FS). at 20°C
However the below results are tested and will under normal conditions apply
Accuracy: 0,10%/FS@20°C will apply for up to 2:1 turn down
0,25%/FS@20°C will apply for up to 4:1 turn down
a) Remove protection-cap.
b) Install CombiPress™ in the application
c) Connect the power supply
d) If needed, configure span by the touch screen, FlexPro-
grammer or a HART configurator.
e) If needed, configure the 0-point (4 mA) by pressing the
0-botton for about 5 second (slow blinking diode in app.
5 sec after which the diode will blink fast and the 0-point is
set) or use the facility in the FlexProgrammer or the HART
configurator.
The electronic zero point can be adjusted from -10...10% of the
measuring range.
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 transmitter 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.
You can revert to the factory set zero point correction by recon-
figuring the CombiPress™ with the FlexProgrammer and select-
ing factory setting.
www.baumer.com
Operators instructions: 11120948 PFMx Page 4 / 12
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