Catalogue Siemens - Measuring instruments for pressure
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SITRANS P measuring instruments for pressure
Transmitters for gage and absolute pressure
absolute pressure
Measuring range >1 bar (>14.5 psi) Main components:
• Stainless steel housing with ceramic measuring cell and elec­tronics module. The temperature-compensated ceramic 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.
• Process connection made of stainless steel in diverse designs (see Selection and Ordering data)
• Electrical connection made using a plug to DIN 43650 with the cable inlet M16 x 1.5, /-14 NPT or round plug connector M12.
The industrial pressure transmitters with a nominal range > 1barg
(> 14.5 psi g) are optionally available with or without explosion
protection.
I Function
The pressure industrial transmitter measures the gage and absolute pres­sure as well as the level of liquids and gases.
Mode of operation
Overview
2
SITRANS P pressure transmitters, Z series for pressure and absolute pressure (7MF1564-...)
SITRANS P pressure transmitters, Z series (7MF1564-...), mea­sure the gage and absolute pressure as well as the level of liq­uids and gases.
I Benefits
• High measuring accuracy
• Sturdy stainless steel housing
• For aggressive and non-aggressive media
• For measuring the pressure of liquids, gases and vapor
• Temperature-compensated measuring cell
• Compact design
I Application
The pressure transmitter of the Z series for gage pressure and absolute pressure (7MF1564-...) is used above all in the follow­ing industrial areas:
• Chemical industry
• Pharmaceutical industry
• Food industry
• Mechanical engineering
• Shipbuilding
• Water supply
Design
The design of the pressure transmitter is dependent on the mea­suring range.
Measuring range <1 bar (<14.5 psi) Main components:
• Stainless steel housing with piezo-resistive silicon measuring cell (with stainless steel diaphragm, temperature-compen­sated) and electronics module
• Process connection made of stainless steel in diverse designs (see Selection and Ordering data)
• Electrical connection made using a plug to DIN 43650 with the cable inlet M16 x 1.5, /-14 NPT or round plug connector M12.
The pressure transmitters with a nominal range < 1 bar g
(< 14.5 psi g) are optionally available with or without explosion
protection.
SITRANS P pressure transmitters, Z series (7MF1564-...), functional dia­gram
The mode of operation of the pressure transmitter is dependent on the measuring range.
Measuring range <1 bar (<14.5 psi)
The silicon measuring cell of the pressure transmitter has a piezo-resistive bridge to which the operating pressure is trans­mitted through silicone oil and a stainless steel diaphragm.
The measuring cell output voltage is fed to an amplifier and con­verted into an output current 4 ... 20 mA. The output current is linearly proportional to the input pressure
Measuring range >1 bar (>14.5 psi)
The thin-film measuring cell has a thin-film resistance bridge to which the operating pressure p is transmitted through a ceramic diaphragm.
The voltage output from the measuring cell is converted by an amplifier into an output current 4 ... 20 mA or an output voltage of 0 ... 10 V DC.
The output current and voltage are linearly proportional to the in­put pressure
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Siemens FI 01 • 2008
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