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Siemens SITRANS 7MF03.0 Compact Operating Instructions
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Siemens SITRANS 7MF03.0 Compact Operating Instructions

Siemens SITRANS 7MF03.0 Compact Operating Instructions

Pressure transmitter
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SITRANS
Pressure transmitter
SITRANS P320/P420 (mA/HART)
Compact Operating Instructions
7MF03.0
7MF04.0
06/2018
A5E38874562-AA
Introduction
Safety instructions
Installing/mounting
Connecting
Commissioning
Service and maintenance
Technical data
Appendix A
1
2
3
4
5
6
7
8

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Summary of Contents for Siemens SITRANS 7MF03.0

  • Page 1 Introduction Safety instructions Installing/mounting SITRANS Connecting Pressure transmitter SITRANS P320/P420 (mA/HART) Commissioning Service and maintenance Compact Operating Instructions Technical data Appendix A 7MF03.0 7MF04.0 06/2018 A5E38874562-AA...
  • Page 2 Note the following: WARNING Siemens products may only be used for the applications described in the catalog and in the relevant technical documentation. If products and components from other manufacturers are used, these must be recommended or approved by Siemens. Proper transport, storage, installation, assembly, commissioning, operation and maintenance are required to ensure that the products operate safely and without any problems.

  • Page 3: Table Of Contents

    Table of contents Introduction..............................7 Purpose of this documentation....................7 Document history........................7 Scope of validity of this document....................7 Intended use..........................8 Product compatibility........................8 Nameplate layout........................9 Checking the consignment.....................11 Security information.......................11 Transportation and storage....................12 1.10 Notes on warranty........................12 Safety instructions............................13 Precondition for use.......................13 2.1.1 Warning symbols on the device.....................13 2.1.2 Laws and directives........................13...
  • Page 4 Table of contents 4.2.3 Closing the device........................34 Commissioning............................37 Basic safety instructions......................37 Switching on the supply voltage.....................38 Commissioning the device.....................39 gauge pressure, absolute pressure from the differential pressure series and absolute pressure from the gauge pressure series................39 5.4.1 Commissioning for gases.......................39 5.4.2 Commissioning with steam or liquid..................41 Differential pressure and flow rate..................42...
  • Page 5 Table of contents Measuring accuracy of SITRANS P420.................73 7.3.1 Reference conditions......................73 7.3.2 Effect of auxiliary power supply....................73 7.3.3 Gauge pressure........................73 7.3.4 Gauge pressure from the differential pressure series ............74 7.3.5 Absolute pressure from gauge and differential pressure series..........76 7.3.6 Absolute pressure with front-flush diaphragm................77 7.3.7 Gauge pressure with front-flush diaphragm................78 7.3.8...
  • Page 6 Table of contents SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 7: Introduction

    The instructions are aimed at persons who install and commission the device. To realize optimum performance from the device, read the complete operating instructions. See also Instructions and manuals (http://www.siemens.com/processinstrumentation/documentation) Document history The overview below summarizes the most important changes in the documentation when compared to the previous edition.

  • Page 8: Intended Use

    Introduction 1.5 Product compatibility Intended use Overview Depending on the variant, the pressure transmitter measures corrosive, non-corrosive and hazardous gases, vapors and liquids. You can use the pressure transmitter for the following measuring tasks: ● Gauge pressure ● Absolute pressure ●...

  • Page 9: Nameplate Layout

    Introduction 1.6 Nameplate layout Nameplate layout Nameplate with general information The nameplate with the article number and other important information, such as design details and technical data, is located on the cover over the buttons. ① ⑥ Article number (MLFB number) Degree of protection ②...
  • Page 10 Introduction 1.6 Nameplate layout Nameplate with approval information The nameplate with approval information is located on the front of the enclosure. Characteristics of the hazardous area Type of protection Group (gas, dust) Maximum surface temperature (temperature class) Device protection level Figure 1-2 Example Measuring point label...

  • Page 11: Checking The Consignment

    In order to protect plants, systems, machines and networks against cyber threats, it is necessary to implement – and continuously maintain – a holistic, state-of-the-art industrial security concept. Siemens’ products and solutions constitute one element of such a concept. SITRANS P320/P420 (mA/HART)

  • Page 12: Transportation And Storage

    The content reflects the technical status at the time of publishing. Siemens reserves the right to make technical changes in the course of further development.

  • Page 13: Safety Instructions

    Safety instructions Precondition for use This device left the factory in good working condition. In order to maintain this status and to ensure safe operation of the device, observe these instructions and all the specifications relevant to safety. Observe the information and symbols on the device. Do not remove any information or symbols from the device.

  • Page 14: Conformity With European Directives

    If you need additional information not covered by these instructions, contact your local Siemens office or company representative. Note Operation under special ambient conditions...

  • Page 15: Use In Hazardous Areas

    Safety instructions 2.3 Use in hazardous areas Use in hazardous areas Qualified personnel for hazardous area applications Persons who install, connect, commission, operate, and service the device in a hazardous area must have the following specific qualifications: ● They are authorized, trained or instructed in operating and maintaining devices and systems according to the safety regulations for electrical circuits, high pressures, aggressive, and hazardous media.
  • Page 16 Safety instructions 2.3 Use in hazardous areas WARNING Use of incorrect device parts in potentially explosive environments Devices and their associated device parts are either approved for different types of protection or they do not have explosion protection. There is a risk of explosion if device parts (such as covers) are used for devices with explosion protection that are not expressly suited for this type of protection.

  • Page 17: Installing/Mounting

    Installing/mounting Basic safety instructions DANGER Pressure applications Danger to personnel, system and environment will result from improper disassembly. ● Never attempt to loosen, remove, or disassemble process connection while vessel contents are under pressure. WARNING Wetted parts unsuitable for the process media Risk of injury or damage to device.
  • Page 18 Installing/mounting 3.1 Basic safety instructions WARNING Incorrect material for the diaphragm in Zone 0 Risk of explosion in the hazardous area. If operated with intrinsically safe supply devices of category "ib" or devices of the flameproof enclosure version "Ex d" and simultaneous use in Zone 0, pressure transmitter explosion protection depends on the tightness of the diaphragm.

  • Page 19: Installation Location Requirements

    ● Prevent severe external stresses and loads from acting on the device. Note Material compatibility Siemens can provide you with support concerning selection of sensor components wetted by process media. However, you are responsible for the selection of components. Siemens accepts no liability for faults or failures resulting from incompatible materials.

  • Page 20: Devices With Marine Approval

    Installing/mounting 3.1 Basic safety instructions NOTICE Direct sunlight Increased measuring errors. ● Protect the device from direct sunlight. Make sure that the maximum ambient temperature is not exceeded. Refer to the information in the section Technical data (Page 55). 3.1.1.1 Devices with marine approval Note For vibrations in the direction of the measuring cell diaphragm, the measuring accuracy of the...

  • Page 21: Installation (Except Level)

    Installing/mounting 3.2 Installation (except level) NOTICE Incorrect mounting The device can be damaged, destroyed, or its functionality impaired through improper mounting. ● Before installing ensure there is no visible damage to the device. ● Make sure that process connectors are clean, and suitable gaskets and glands are used. ●...

  • Page 22: Installation (Except Level)

    Installing/mounting 3.2 Installation (except level) 3.2.2 Installation (except level) Mounting location Verify that the mounting location meets the following conditions: ● Accessible ● Close to the measuring point ● Vibration-free ● Within the permitted ambient temperature values Protect the pressure transmitter from: ●...
  • Page 23 Installing/mounting 3.2 Installation (except level) Note Install the device so that the pressure transmitter and the differential pressure lines are not subject to different vibrations. Otherwise there is a danger that the differential pressure lines will rupture. Example 1: Pipe mounting of pressure transmitter (gauge pressure series) The mounting bracket for the gauge pressure series includes, among other things: ●...

  • Page 24: Installation (Level)

    Installing/mounting 3.3 Installation (level) Installation (level) Mounting location Verify that the mounting location meets the following conditions: ● Accessible ● Close to the measuring point ● Vibration-free ● Within the permitted ambient temperature values Protect the pressure transmitter from: ● Direct heat radiation ●...

  • Page 25: Mounting On The Container

    Installing/mounting 3.3 Installation (level) Procedure To install the pressure transmitter for level, proceed as follows: 1. Attach the seal to the container's mating flange. Ensure that the seal is centrally positioned and that it does not restrict the movement of the flange's seal diaphragm in any way.
  • Page 26 Installing/mounting 3.3 Installation (level) Assembly on a closed container When taking measurements in a closed container without or with little condensate formation, the negative pressure line is not filled. Lay the line in such a way that condensation pockets do not form. Install a condensation container if required. Formula: Start of scale value: Δp = ρ...
  • Page 27 Installing/mounting 3.3 Installation (level) When taking measurements in a closed container with strong condensate formation, you must fill the negative pressure line (mostly with the condensate of the measured medium) and install a condensate pot. Lock the device using the dual pneumatic block 7MF9017-..A. Formula: Start of scale value: Δp...

  • Page 28: Removing

    Installing/mounting 3.4 Removing Removing WARNING Incorrect disassembly The following risks may result from incorrect disassembly: - Injury through electric shock - Risk through emerging media when connected to the process - Risk of explosion in hazardous area In order to disassemble correctly, observe the following: ●...

  • Page 29: Connecting

    Connecting Basic safety instructions WARNING Unsuitable cables, cable glands and/or plugs Risk of explosion in hazardous areas. ● Use only cable glands/plugs that comply with the requirements for the relevant type of protection. ● Tighten the cable glands in accordance with the torques specified in Technical data (Page 55).
  • Page 30 Connecting 4.1 Basic safety instructions WARNING Improper laying of shielded cables Risk of explosion through compensating currents between hazardous area and the non‑hazardous area. ● Shielded cables that cross into hazardous areas should be grounded only at one end. ● If grounding is required at both ends, use an equipotential bonding conductor. WARNING Connecting device in energized state Risk of explosion in hazardous areas.
  • Page 31 Connecting 4.1 Basic safety instructions NOTICE Condensation in the device Damage to device through formation of condensation if the temperature difference between transportation or storage and the mounting location exceeds 20 °C (36 °F). ● Before taking the device into operation let the device adapt for several hours in the new environment.

  • Page 32: Connecting The Device

    Connecting 4.2 Connecting the device Connecting the device 4.2.1 Opening the device Procedure ① Safety catch (optional) ② Cover of the electrical cable compartment. Figure 4-1 Rear view of pressure transmitter ① 1. Use a 3 mm Allen key to loosen the safety catch ②...

  • Page 33: Connecting The Device

    Connecting 4.2 Connecting the device 4.2.2 Connecting the device Procedure - Test + ① ⑥ Feed separator with integrated load Safety catch ② ⑦ Supply voltage Process connec‐ tion ③ ⑧ Cable gland for supply voltage/current output Protective conduc‐ tor connector/equi‐ potential bonding terminal ④...

  • Page 34: Closing The Device

    Connecting 4.2 Connecting the device ④ 3. Connect the wires to the connecting terminals "+" and "-". Ensure the correct polarity! ⑨ 4. Apply the shield to the screw of the ground terminal The screw of the ground terminal is electrically connected to the external protective conductor connection.
  • Page 35 Connecting 4.2 Connecting the device 4. Tighten the screw for the cover over the buttons. ⑤ ② 5. Check the tightness of the blanking plug and cable gland in accordance with the degree of protection. SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...
  • Page 36 Connecting 4.2 Connecting the device SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 37: Commissioning

    Commissioning Basic safety instructions DANGER Toxic gases and liquids Danger of poisoning when venting the device: if toxic process media are measured, toxic gases and liquids can be released. ● Before venting ensure that there are no toxic gases or liquids in the device, or take the appropriate safety measures.

  • Page 38: Switching On The Supply Voltage

    Commissioning 5.2 Switching on the supply voltage WARNING Opening device in energized state Risk of explosion in hazardous areas ● Only open the device in a de-energized state. ● Check prior to commissioning that the cover, cover locks, and cable inlets are assembled in accordance with the directives.

  • Page 39: Commissioning The Device

    Commissioning 5.4 gauge pressure, absolute pressure from the differential pressure series and absolute pressure from the gauge pressure series Procedure Switch on the power supply. ● Product name and firmware version appear briefly on the display. ● The measured values are shown on the display. For a device without a display, you read off the current output as follows: –...
  • Page 40 Commissioning 5.4 gauge pressure, absolute pressure from the differential pressure series and absolute pressure from the gauge pressure series Procedure Example: Measuring gases above the Example: Measuring gases below the pressure tapping point pressure tapping point ① ⑤ Pressure transmitter Pressure line ②...

  • Page 41: Commissioning With Steam Or Liquid

    Commissioning 5.4 gauge pressure, absolute pressure from the differential pressure series and absolute pressure from the gauge pressure series ⑥ 5. Open the shut-off valve at the pressure tapping point. ③ 6. Open the shut-off valve for the process 5.4.2 Commissioning with steam or liquid Requirement All valves are closed.

  • Page 42: Differential Pressure And Flow Rate

    Commissioning 5.5 Differential pressure and flow rate ⑥ 5. Open the shut-off valve at the pressure tapping point. ③ 6. Open the shut-off valve for the process Differential pressure and flow rate WARNING Incorrect or improper operation If the lock screws are missing or are not sufficiently tight, and/or if the valves are operated incorrectly or improperly, it could lead to serious physical injuries or considerable damage to property.
  • Page 43 Commissioning 5.5 Differential pressure and flow rate Procedure Pressure transmitter above the differential pressure transducer Pressure transmitter below the differential pressure transducer ① ⑦ Pressure transmitter Blowout valves ② ⑧ Stabilizing valve Condensate vessels (optional) ③ ④ ⑨ Differential pressure valves Differential pressure transducer ⑤...

  • Page 44: Commissioning For Liquids

    Commissioning 5.5 Differential pressure and flow rate 5.5.2 Commissioning for liquids Requirement All valves are closed. DANGER Toxic liquids Danger of poisoning when the device is vented. If toxic process media are measured with this device, toxic liquids can escape when the device is vented.

  • Page 45: Commissioning With Vapor

    Commissioning 5.5 Differential pressure and flow rate To commission the pressure transmitter for liquids, proceed as follows: ⑥ 1. Open both the shut-off valves at the pressure tapping point. ② 2. Open the stabilizing valve 3. With pressure transmitters below the differential pressure transducer, partially open both ⑦...
  • Page 46 Commissioning 5.5 Differential pressure and flow rate WARNING Hot vapor Danger of injury. ⑦ You can briefly open the drain valves to clean the line. Hot vapor can escape in the process. ⑦ ● Only open the drain valves briefly, and close them again before vapor escapes. Procedure ①...
  • Page 47 Commissioning 5.5 Differential pressure and flow rate 6. Partially open the vent valve (sealing plug with vent valve) on the negative side of the pressure transmitter until condensate escapes without bubbles. ③ 7. Close the differential pressure valve ④ 8. Partially open the differential pressure valve until condensate escapes without bubbles.
  • Page 48 Commissioning 5.5 Differential pressure and flow rate SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 49: Service And Maintenance

    Service and maintenance Basic safety instructions WARNING Use of a computer in a hazardous area If the interface to the computer is used in the hazardous area, there is a risk of explosion. ● Ensure that the atmosphere is explosion-free (hot work permit). WARNING Dust layers above 5 mm Risk of explosion in hazardous areas.

  • Page 50: Cleaning

    Do not use corrosive cleaning agents. Prevent the diaphragm from getting damaged due to sharp-edged tools. Maintenance and repair work WARNING Impermissible repair and maintenance of the device ● Repair and maintenance must be carried out by Siemens authorized personnel only. SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 51: Defining The Maintenance Interval

    6.3 Maintenance and repair work WARNING Impermissible repair of explosion protected devices Risk of explosion in hazardous areas ● Repair must be carried out by Siemens authorized personnel only. CAUTION Hot surfaces Risk of burns during maintenance work on parts having surface temperatures exceeding 70 °C (158 °F).

  • Page 52: Checking The Gaskets

    Incorrect measured values will be displayed. Changing the seals in a process flange of a differential pressure measuring cell can alter the start-of-scale value. ● Changing seals in devices with differential pressure measuring cells may only be carried out by personnel authorized by Siemens. SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 53: Diagnostics Messages

    Using the wrong seals with flush-mounted process connections can cause measuring errors and/or damage the diaphragm. ● Always use seals which comply with the process connection standards or are recommended by Siemens. 1. Clean the enclosure and seals. 2. Check the enclosure and seals for cracks and damage.

  • Page 54: Disposal

    Further information about devices containing batteries can be found at: In‐ formation on battery/product return (WEEE) (https:// support.industry.siemens.com/cs/document/109479891/) Note Special disposal required The device includes components that require special disposal. ● Dispose of the device properly and environmentally through a local waste disposal contractor.

  • Page 55: Technical Data

    Technical data Input 7.1.1 Gauge pressure Gauge pressure input Measured variable Gauge pressure Measuring span (continuous‐ Measuring span Maximum permissible Maximum test ly adjustable) or measuring operating pressure MAWP pressure range, max. operating pres‐ (PS) sure (in accordance with 8.3 … 250 mbar 4 bar 6 bar 2014/68/EU Pressure Equip‐...

  • Page 56: Gauge Pressure With Front-Flush Diaphragm

    Technical data 7.1 Input Gauge pressure measuring limits 30 mbar a/3 kPa a/0.44 psi a ● Measuring cell with inert oil 100 mbar a/10 kPa a/1.45 psi a ● Measuring cell with FDA-compliant oil Upper measuring limit 100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/ 1450 psi and 60 °C ambient temperature/medium temperature) Start of scale value Between the measuring limits (continuously adjustable)

  • Page 57: Gauge Pressure From The Differential Pressure Series

    Technical data 7.1 Input 7.1.3 Gauge pressure from the differential pressure series Gauge pressure input from the differential pressure series Measured variable Gauge pressure and differential pressure Measuring span (continuous‐ Measuring span Maximum permissible Max. permissible ly adjustable) and maximum operating pressure test pressure operating pressure (accord‐...

  • Page 58: Absolute Pressure From The Gauge Pressure Series

    Technical data 7.1 Input 7.1.4 Absolute pressure from the gauge pressure series Absolute pressure input from the gauge pressure series Measured variable Absolute pressure Measuring span (continuous‐ Measuring span Maximum permissible Maximum test ly adjustable) or measuring operating pressure MAWP pressure range, max.

  • Page 59: Absolute Pressure With Front-Flush Diaphragm

    Technical data 7.1 Input Absolute pressure measuring limits from gauge pressure series Upper measuring limit 100% of max. range (for oxygen measurement: max. 100 bar/10 MPa/ 1450 psi and 60 °C ambient temperature/medium temperature) Start of scale value Between the measuring limits (continuously adjustable) 7.1.5 Absolute pressure with front-flush diaphragm Absolute pressure with front-flush diaphragm...

  • Page 60: Absolute Pressure From The Differential Pressure Series

    Technical data 7.1 Input 7.1.6 Absolute pressure from the differential pressure series Absolute pressure input from the differential pressure series Measured variable Absolute pressure Measuring span (continuous‐ Measuring span Maximum permissible Max. permissible ly adjustable) and maximum operating pressure test pressure operating pressure (accord‐...

  • Page 61: Differential Pressure And Flow

    Technical data 7.1 Input 7.1.7 Differential pressure and flow Differential pressure input and flow Measured variable Differential pressure and flow Measuring span (continuous‐ Measuring span Maximum permissible Max. permissible ly adjustable) and maximum operating pressure test pressure operating pressure (accord‐ MAWP (PS) ing to 2014/68/EU Pressure 1 ...

  • Page 62: Level

    Technical data 7.1 Input Differential pressure and flow measuring limits Lower measuring limit -100% of maximum measuring range or 30 mbar a /3 kPa a /0.44 psi a ● Measuring cell with silicone oil filling ● Measuring cell with inert oil For process temperature -20 °C -100% of maximum measuring range or 30 mbar a /3 kPa a /0.44 psi a <...

  • Page 63: Measuring Accuracy Of Sitrans P320

    Technical data 7.2 Measuring accuracy of SITRANS P320 Level measuring limits Lower measuring limit Measuring cell with silicone oil -100% of max. measuring range or 30 mbar a/3 kPa a/0.44 psi a depending filling on the mounting flange Measuring cell with inert oil -100% of max.
  • Page 64 Technical data 7.2 Measuring accuracy of SITRANS P320 Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure 1 bar/100 kPa/14.5 psi ≤ 0.065% ≤ (0.004 • r + 0.045)% 4 bar/400 kPa/58 psi 16 bar/1.6 MPa/232 psi 63 bar/6.3 MPa/914 psi 160 bar/16 MPa/12321 psi r ≤...

  • Page 65: Gauge Pressure From The Differential Pressure Series

    Technical data 7.2 Measuring accuracy of SITRANS P320 7.2.4 Gauge pressure from the differential pressure series Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from the differential pressure series Measuring span ratio r (spread, Turn-Down) r = max.

  • Page 66: Absolute Pressure From Gauge And Differential Pressure Series

    Technical data 7.2 Measuring accuracy of SITRANS P320 Step response time T (without electrical damping) - gauge pressure from differential pressure series 20 mbar/2 kPa/8.031 inH Approx. 0.160 s 60 mbar/6 kPa/24.09 inH2O Approx. 0.150 s 250 mbar/25 kPa/3.6 psi Approx.

  • Page 67: Absolute Pressure With Front-Flush Diaphragm

    Technical data 7.2 Measuring accuracy of SITRANS P320 Step response time T (without electrical damping) - absolute pressure from gauge and differential pressure series Gauge pressure series All measuring cells Approx. 0.105 s Differential pressure series 250 mbar/25 kPa/3.6 psi Approx.

  • Page 68: Gauge Pressure With Front-Flush Diaphragm

    Technical data 7.2 Measuring accuracy of SITRANS P320 Effect of mounting position In pressure per change of angle 0.04 kPa/0.4 mbar/0.006 psi per 10° incline (zero-point correction is possible with position error compen‐ sation) 7.2.7 Gauge pressure with front-flush diaphragm Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure with front-flush diaphragm Measuring span ratio r (spread, Turn-Down) r = max.

  • Page 69: Differential Pressure And Flow

    Technical data 7.2 Measuring accuracy of SITRANS P320 7.2.8 Differential pressure and flow Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Measuring span ratio r (spread, Turn-Down) r = max. measuring span/set measuring span and nomi‐ nal measuring range Linear characteristic curve r ≤...
  • Page 70 Technical data 7.2 Measuring accuracy of SITRANS P320 Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Flow 25 ... 50% 250 mbar/25 kPa/3.63 psi ≤ 0.13% ≤ (0.008 • r + 0.09)% 600 mbar/60 kPa/8.70 psi 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi 30 bar/3 MPa/435.11 psi...
  • Page 71 Technical data 7.2 Measuring accuracy of SITRANS P320 Long-term stability at ±30 °C (±54 °F) - differential pressure and flow 250 mbar/25 kPa/3.63 psi In 5 years ≤ (0.125 • r)% 600 mbar/60 kPa/8.70 psi In 10 years ≤ (0.15 • r)% 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi 30 bar/3 MPa/435.11 psi...

  • Page 72: Level

    Technical data 7.2 Measuring accuracy of SITRANS P320 7.2.9 Level Conformity error at limit point setting, including hysteresis and repeatability - level Measuring span ratio r (spread, r = max. measuring span/set measuring span and nominal measuring range Turn-Down) ● Linear characteristic curve r ≤...

  • Page 73: Measuring Accuracy Of Sitrans P420

    Technical data 7.3 Measuring accuracy of SITRANS P420 Measuring accuracy of SITRANS P420 7.3.1 Reference conditions ● In accordance with EN 60770-1 ● Rising characteristic curve ● Lower range value 0 bar/kPa/psi ● Seal diaphragm stainless steel ● Measuring cell with silicone oil filling ●...

  • Page 74: Gauge Pressure From The Differential Pressure Series

    Technical data 7.3 Measuring accuracy of SITRANS P420 Effect of ambient temperature - gauge pressure 4 bar/400 kPa/58 psi ≤ (0.025 • r + 0.125)% 16 bar/1.6 MPa/232 psi 63 bar/6.3 MPa/914 psi 160 bar/16 MPa/2321 psi 400 bar/40 MPa/5802 psi 700 bar/70 MPa/10152 psi ≤...
  • Page 75 Technical data 7.3 Measuring accuracy of SITRANS P420 Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure from differential pressure series 250 mbar/25 kPa/3.6 psi ≤ 0.04% ≤ (0.004 • r + 0.045)% 600 mbar/60 kPa/240.9 inH 1600 mbar/160 kPa/642.4 inH 5000 mbar/500 kPa/2008 inH 30 bar/3 MPa/435 psi...

  • Page 76: Absolute Pressure From Gauge And Differential Pressure Series

    Technical data 7.3 Measuring accuracy of SITRANS P420 Effect of mounting position ≤ 0.7 mbar/0.007 kPa/0.01015266 psi per 10° incline (zero-point correction is possible with position error compen‐ sation) 7.3.5 Absolute pressure from gauge and differential pressure series Conformity error at limit point setting, including hysteresis and repeatability - absolute pressure from gauge and differential pressure series Measuring span ratio r (spread, Turn-Down) r = max.

  • Page 77: Absolute Pressure With Front-Flush Diaphragm

    Technical data 7.3 Measuring accuracy of SITRANS P420 Effect of mounting position - absolute pressure from gauge and differential pressure series In pressure per change of angle ● For absolute pressure (from the gauge pressure series): ≤ 0.05 mbar/0.005 kPa/0.000725 psi per 10° incline ●...

  • Page 78: Gauge Pressure With Front-Flush Diaphragm

    Technical data 7.3 Measuring accuracy of SITRANS P420 7.3.7 Gauge pressure with front-flush diaphragm Conformity error at limit point setting, including hysteresis and repeatability - gauge pressure with front-flush diaphragm Measuring span ratio r (spread, Turn-Down) r = max. measuring span/set measuring span and nominal measuring range ●...
  • Page 79 Technical data 7.3 Measuring accuracy of SITRANS P420 Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Linear characteristic curve r ≤ 5 5 < r ≤ 60 60 mbar/6 kPa/0.87 psi ≤ 0.075% ≤...
  • Page 80 Technical data 7.3 Measuring accuracy of SITRANS P420 Conformity error at limit point setting, including hysteresis and repeatability - differential pressure and flow Flow 25 ... 50% ≤ 0.08% ≤ (0.008 • r + 0.09)% ● 250 mbar/25 kPa/3.63 psi 600 mbar/60 kPa/8.70 psi 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi...
  • Page 81 Technical data 7.3 Measuring accuracy of SITRANS P420 Long-term stability at ±30 °C (±54 °F) - differential pressure and flow 250 mbar/25 kPa/3.63 psi In 5 years ≤ (0.125 • r)% 600 mbar/60 kPa/8.70 psi In 10 years ≤ (0.15 • r)% 1600 mbar/160 kPa/23.21 psi 5 bar/500 kPa/72.52 psi 30 bar/3 MPa/435.11 psi...

  • Page 82: Level

    Technical data 7.3 Measuring accuracy of SITRANS P420 7.3.9 Level Conformity error at limit point setting, including hysteresis and repeatability - level Measuring span ratio r (spread, r = max. measuring span/set measuring span and nominal measuring range Turn-Down) ● Linear characteristic curve r ≤...

  • Page 83: Operating Conditions

    Technical data 7.4 Operating conditions Operating conditions Operating conditions for gauge pressure and absolute pressure (from the gauge pressure series) Ambient conditions ● Ambient temperature Note Observe the temperature class in hazardous areas. Enclosure Measuring cell with sili‐ -40 … +85 °C (-40 … +185 °F) cone oil filling Measuring cell with inert -40 ...
  • Page 84 Technical data 7.4 Operating conditions Operating conditions for gauge pressure and absolute pressure (from the gauge pressure series) Cell Pressure Temperature range Measuring cell with sili‐ -40 … +100 °C (-40 … +212 °F) cone oil filling Measuring cell with inert 1 bar/100 kPa/3.6 psi -40 …...
  • Page 85 Technical data 7.4 Operating conditions Operating conditions for gauge pressure and absolute pressure with flush-mounted diaphragm Electromagnetic compatibili‐ In accordance with EN 61326 and ● Interference emission and NAMUR NE 21 interference immunity Process medium conditions Process temperature -40 … +150°C (-40 … +302 °F) ●...
  • Page 86 Technical data 7.4 Operating conditions Operating conditions for gauge pressure and absolute pressure (from the differential pressure series), differential pressure and flow rate Enclosure with mounted HAN con‐ IP65 nector Electromagnetic compatibili‐ Interference emission and In accordance with EN 61326 and interference immunity NAMUR NE 21 Process medium conditions...

  • Page 87: Vibration Resistance

    Technical data 7.5 Vibration resistance Operating conditions for level Enclosure with mounted HAN con‐ IP65 nector Electromagnetic compatibili‐ Interference emission and In accordance with EN 61326 and interference immunity NAMUR NE 21 Process medium conditions ● Process temperature Measuring cell with sili‐ ●...
  • Page 88 Technical data 7.5 Vibration resistance Operating conditions according to KTA Gauge pressure series Differential pressure series 3503 Aluminum and stainless steel enclosure Aluminum and stainless steel enclosure Vibrations (sine) 9 ... 35 Hz at 10 m/s² IEC 60068-2-6 1 octave/min 1 cycle/axis Vibrations (sine) 5 ...

  • Page 89: Construction

    Technical data 7.6 Construction Operating conditions for marine (only in Gauge pressure series Differential pressure series 1)2) combination with order option E): DNV-GL (Det Norske Veritas/Germa‐ 2 ... 25 Hz at 3.2 mm nischer Lloyd) 25 ... 100 Hz at 40 m/s² Lloyd’s Register 0.5 octave/min Bureau Veritas...
  • Page 90 Technical data 7.6 Construction Construction for gauge pressure and absolute pressure (from the gauge pressure series) Process connection ● Connection pin G A in accordance with DIN EN 837-1 ● Female thread ‑14 NPT ● Oval flange (PN 160 (MAWP 2320 psi g)) with fastening screw thread: –...
  • Page 91 Technical data 7.6 Construction Construction for gauge pressure and absolute pressure (from the differential pressure series), differential pressure and flow rate Weight Approx. 3.9 kg (8.5 lb) with aluminum enclosure Approx. 5.9 kg (13 lb) with stainless steel enclosure Material ●...
  • Page 92 Technical data 7.6 Construction Construction for level Stainless steel, mat. no. 1.4404/316L, Monel 400, mat. no. 2.4360, Alloy B2, mat. ● Seal diaphragm on the no. 2.4617, Alloy C276, mat. no. 2.4819, Alloy C22, mat. no. 2.4602, tantalum, PTFE mounting flange Smooth as per EN 1092‑1, form B1 or ASME B16.5 RF 125 …...

  • Page 93: Torques

    Technical data 7.8 Display, keyboard and auxiliary power Torques Torques Cable glands/blanking plugs 4 Nm (3 ft lb) ● Screw-in torque for plastic gland in all enclosures 6 Nm (4.4 ft lb) ● Screw-in torque for metal/stainless steel glands in aluminum/stainless steel enclosure 15 Nm (11.1 ft lb) ●...

  • Page 94: Certificates And Approvals

    Technical data 7.9 Certificates and approvals Certificates and approvals Certificates and approvals Classification according to pressure equipment direc‐ ● For gases of fluid group 1 and liquids of fluid group 1; complies tive (PED 2014/68/EU) with requirements of article 4, paragraph 3 (sound engineering practice) ●...
  • Page 95 Technical data 7.9 Certificates and approvals Certificates and approvals Designation II 1D Ex tb IIIC T120 °C Da II 2D Ex tb IIIC T120 °C Db II 3D Ex tc IIIC T120 °C Dc Permissible ambient temperature -40 ... +80 °C (-40 ... +176 °F) Permissible temperature of medium -40 …...
  • Page 96 Technical data 7.9 Certificates and approvals SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 97: Technical Support

    In addition to our documentation, Siemens provides a comprehensive support solution at: ● Service&Support (http://www.siemens.com/automation/service&support) Personal contact If you have additional questions about the device, please contact your Siemens personal contact at: ● Partner (http://www.automation.siemens.com/partner) To find the personal contact for your product, go to "All Products and Branches" and select "Products &...

  • Page 98: Certificates

    Appendix A 8.2 Certificates Certificates You can find certificates on the Internet at Certificates (http://www.siemens.com/ processinstrumentation/certificates) or on an included DVD. SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

  • Page 99: Index

    Index Instuctions and manuals, 97 Ambient temperature, 83, 84, 85, 86 Effect, 67, 77 Laws and directives Disassembly, 13 Personell, 13 Layout of nameplate with general information, 9 Blowout valve, 40 Blowout valves, 43 Manuals, 97 Modifications correct usage, 14 Certificates, 13, 98 improper, 14 Cleaning, 50...
  • Page 100 Index Technical Support, 97 Partner, Personal contact, 97 Test certificates, 13 Vent valve, 45, 46 Warranty, 12 SITRANS P320/P420 (mA/HART) Compact Operating Instructions, 06/2018, A5E38874562-AA...

This manual is also suitable for:

Sitrans p420Sitrans p320Sitrans 7mf04.0

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