7MF15654 Series Technical Instructions Document No. 155-768 January 18, 2012 Pressure Transmitter, PSIG Range for Sensing Liquid/Gas Siemens Industry, Inc. Description The 7MF15654 Series Pressure Transmitters measure the gauge pressure of aggressive and non-aggressive gases as well as the level of liquids and vapors. Features • High measuring accuracy • Sturdy stainless steel housing • For aggressive and non-aggressive media • Measures the pressure of liquids, gases and vapor • Temperature-compensated measuring cell • Compact design Application The 7MF15654 Series Pressure Transmitters are mainly used in the U.S. market for the following industrial areas: • Chemical industry • Pharmaceutical industry • Food industry • Mechanical engineering • Water supply Product Numbers Table 1. Product Number Description 7MF15654XX005EA1 Sensor, Liquid/Gas, 4 to 20 mA 7MF15654XX105EA1 Sensor, Liquid/Gas, 0 to 10 Vdc XX = BB 0 to 15 PSI BE 0 to 30 PSI BF 0 to 60 PSI BG 0 to 100 PSI CA 0 to 150 PSI CB 0 to 200 PSI CD 0 to 300 PSI Technical Instructions 7MF15654 Pressure Transmitter, PSIG Range for Sensing Liquid/Gas Document Number 155-768 January 18, 2012 Page 2 Siemens Industry, Inc. Design The design of the pressure transmitter is dependent on the measuring range. Measuring range <1 bar (<14.5 psi) The main components of the pressure transmitter are: • Stainless steel housing with piezo-resistive silicon measuring cell (with stainless steel diaphragm, temperature-compensated) and electronics module. • Stainless steel process connection 1/4 - 18 NPT Straight. • Electrical connection is made to DIN 43650 with the cable inlet 1/2 – 14 Taper. Pressure transmitters with a nominal range < 1 bar g (< 14.5 psi g) are available with or without explosion protection. Measuring range > 1 bar (> 14.5 psi) The main components of the pressure transmitter are: • Stainless steel housing with ceramic measuring cell and electronics module. The temperature-compensated ceramic measuring cell has a thin-film strain gauge which is mounted on a ceramic diaphragm. The ceramic diaphragm can also be used for aggressive media. • Stainless steel process connection 1/4 - 18 NPT Straight. Electrical connection is made to DIN 43650 with the cable inlet 1/2 – 14 Taper. Pressure transmitters with a nominal range > 1 bar g (>14.5 psi g) are available with or without explosion protection. Function The pressure transmitter measures the gauge pressure as well as the level of liquids and gases. Mode of Operation SEN0444R1 p U U B0 1 U const. I I Figure 1. 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 a 4 to 20 mA output current. The output is linearly proportional to the input pressure. 7MF15654 Pressure Transmitter, PSIG Range for Sensing Liquid/Gas Technical Instructions Document Number 155-768 January 18, 2012 Siemens Industry, Inc. Page 3 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 measuring cell output voltage is converted by an amplifier into an output current. The output is linearly proportional to the input pressure. Specifications Mode or Operation Measuring range Piezo-resistive <1 bar (<14.5 psi) Measuring range Thin-film strain gauge >1 bar (<14.5 psi) Input Media Range Measured variable Gauge pressure Measured range Pressure 0 to 300 psi g (0 to 21 bar g) Output Signal Current output signal 4 to 20 mA Voltage output signal 0 to 10 Vdc Accuracy To EN 60770-1 Error in measurement (at 77°F [25°C]), 0.25% of full-scale value – typical including conformity error, hysteresis and repeatability Response time T 99 < 0.1 second Long-term drift Start of scale 0.25% of full scale value/year Full-scale value 0.25% of full scale value/year Influence of ambient temperature Start of scale 0.25%/10 K of full-scale value Full-scale value 0.25%/10 K of full-scale value Rated Operating Conditions Process temperature -22°F to 248°F (-30°C to 120°C) Ambient temperature -13°F to 185°F (-25°C to 84°F) Storage temperature -58°F to 212°F (-50°C to 100°C) Degree of protection to EN60529 IP65 Design Weight ≈ 0.55 lb (≈ 0.25 kg) Wetted parts materials: Measuring cell Measuring range < 1 bar (< 14.5 psi) Stainless steel, 1.456 1/316Ti Measuring range > 1 bar (> 14.5 psi) AI 2 O 3 – 96% Process connection Stainless steel, mat. No. 1.4571/316Ti Gasket Viton Input Power Supply U H Terminal voltage on pressure transmitter For current output 10 to 36 Vdc Technical Instructions 7MF15654 Pressure Transmitter, PSIG Range for Sensing Liquid/Gas Document Number 155-768 January 18, 2012 Information in this publication is based on current specifications. The company reserves the right to make changes in specifications and models as design improvements are introduced. Product or company names mentioned herein may be the trademarks of their respective owners. © 2012 Siemens Industry, Inc. Siemens Industry, Inc. Building Technologies Division 1000 Deerfield Parkway Buffalo Grove, IL 60089 USA + 1 847-215-1000 Your feedback is important to us. If you have comments about this document, please send them to SBT_technical.editor.us.sbt@siemens.com Specifications, Continued Certificates and Approvals Classification according to pressure For gases of fluid group 1 and liquids equipment directive (DRGL 97/23/EC) of fluid 1; complies with requirements of article 3, paragraph 3 (sound engineering practice) Explosion protection Intrinsic safety ”i” (only with current output TÜV 02 ATEX 1953X Identification) Ex II 1/2G EEx ia IIC T4 Intrinsic safety “T.I.S.”(only with current output) Applied Lloyd’s Register of Shipping Certificate No. 03/30003 Wiring Diagram SEN0446R1 Signal + 1+ 2- 2 (-U B ) 1 (-U B ) U B U B R L R L I 0 I 0 Output current Power supply Load Connections: Signal + 1+ 2- 3+ 2 (-U B ) 3 (U 0 ) 1 (+U B ) U B U B R L R L U 0 U 0 Output current Power supply Load Connections: Figure 2. Wiring Diagram with Current Output (Top) and Voltage Output (Bottom). Dimensions Figure 3. Dimensions in Millimeters (Inches). 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