Z series for gage pressure, Sitrans p measuring instruments for pressure – Siemens SITRANS P User Manual

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SITRANS P measuring instruments for pressure

Transmitters for gage, absolute and differential pressure

Z series for gage pressure

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Siemens FI 01 · 2009

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Overview

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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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.

, U

const.