Siemens SITRANS P Brochure & Specs page 4

SITRANS P measuring instruments for pressure
Transmitters for gage, absolute and differential pressure
Z series for gage pressure
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Overview
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SITRANS P pressure transmitters, Z series for gage pressure
(7MF1562-...)
The SITRANS P pressure transmitter, Z series (7MF1562-...),
measures the gage pressure of aggressive and non-aggressive
gases, liquids and vapors.
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Benefits
• High measuring accuracy
• Sturdy brass housing
• For aggressive and non-aggressive media
• For measuring the pressure of liquids, gases and vapor
• Temperature-compensated measuring cell
• Compact design
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Application
The pressure transmitter of the Z series for gage pressure
(7MF1562-...) is used above all in the following industrial areas:
• Power engineering
• Mechanical engineering
• Shipbuilding
• Water supply etc.
A concrete application example is the measurement of com-
pressed air containing oil in compressors or compressor sta-
tions.
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© Siemens AG 2008
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Design
The main components of the pressure transmitter are:
• Brass housing with silicon measuring cell and electronics
plate
• Process connection
• Electrical connection
The silicon measuring cell has a thin-film strain gage which is
mounted on a ceramic diaphragm. The ceramic diaphragm can
also be used for aggressive media.
The process connection to DIN EN 837-1 is made of brass and
has a male thread G½B or a female thread G
The electrical connection is made using a plug to DIN 43650
with a M16x1.5 cable inlet.
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Function
The pressure transmitters of the Z series for gage pressure mea-
sure the pressure of aggressive and non-aggressive gases,
liquids and vapors.
The measuring cell is temperature-compensated.
Mode of operation
SITRANS P pressure transmitters, Z series (7MF1562-...), functional dia-
gram
The thin-film measuring cell has a thin-film resistance bridge at
which the operating pressure p is transmitted through a ceramic
diaphragm.
The measuring cell output voltage is fed to an amplifier and con-
verted into an output current of 4 to 20 mA. The output current
is linearly proportional to the input pressure.
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