Siemens 7MF03 Series Compact Operating Instructions
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Siemens 7MF03 Series Compact Operating Instructions

Pressure transmitter with 4 to 20 ma/hart
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SITRANS P
Pressure transmitter
SITRANS P320/P420 with 4 to 20
mA/HART
Compact Operating Instructions
7MF03..-.....-.... (SITRANS P320)
7MF04..-.....-.... (SITRANS P420)
09/2018
A5E38874562-AB
Getting started
Introduction
Safety instructions
Installing/mounting
Connecting
Commissioning
Service and maintenance
Technical data
Appendix A
1
2
3
4
5
6
7
8
A

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Summary of Contents for Siemens 7MF03 Series

  • Page 1 Getting started Introduction Safety instructions SITRANS P Installing/mounting Pressure transmitter SITRANS P320/P420 with 4 to 20 Connecting mA/HART Commissioning Compact Operating Instructions Service and maintenance Technical data Appendix A 7MF03..-..-..(SITRANS P320) 7MF04..-..-..(SITRANS P420) 09/2018 A5E38874562-AB...
  • 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 Getting started..............................7 Commissioning the device without display................7 Commissioning the device with display..................8 Introduction..............................11 Purpose of this documentation....................11 Document history........................11 Scope of validity of this document..................11 Intended use..........................12 Product compatibility......................13 Nameplate layout........................14 Checking the consignment.....................16 Security information.......................16 Transportation and storage....................17 2.10 Notes on warranty........................17 Safety instructions............................19...
  • Page 4 Table of contents Connecting..............................37 Basic safety instructions......................37 Connecting the device......................41 5.2.1 Opening the device........................41 5.2.2 Connecting the device......................42 5.2.3 Closing the device........................43 Commissioning............................45 Basic safety instructions......................45 Switching on the supply voltage.....................46 Commissioning the device.....................47 gauge pressure, absolute pressure from the differential pressure series and absolute pressure from the gauge pressure series................47 6.4.1 Commissioning for gases.......................47...
  • Page 5 Table of contents 8.2.5 Absolute pressure from gauge and differential pressure series..........74 8.2.6 Absolute pressure with front-flush diaphragm................75 8.2.7 Gauge pressure with front-flush diaphragm................76 8.2.8 Differential pressure and flow....................77 8.2.9 Level............................80 Measuring accuracy of SITRANS P420.................81 8.3.1 Reference conditions......................81 8.3.2 Effect of auxiliary power supply....................81 8.3.3 Gauge pressure........................81...
  • Page 6 Table of contents SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 7: Getting Started

    Getting started Commissioning the device without display Introduction In this section, you will learn how to commission the device step-by-step. Before you start, please read the following safety information: ● General safety information (Page 19) ● Basic safety information: Installing/mounting (Page 23) ●...

  • Page 8: Commissioning The Device With Display

    Getting started 1.2 Commissioning the device with display 4. Open the cover of the buttons: Figure 1-1 Top view 5. Operate the buttons as follows: Apply lower range value (with pressure applied) Hold down the button for 3 seconds. Apply upper range value (with pressure applied) Hold down the button for 3 seconds.
  • Page 9 Getting started 1.2 Commissioning the device with display Procedure 1. Mount the device. Installation (except level) (Page 27) Installation (level) (Page 30) 2. Connect the device. Connecting the device (Page 41) 3. Switch on the power supply. Switching on the supply voltage (Page 46) 4.
  • Page 10 Getting started 1.2 Commissioning the device with display SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 11: Introduction

    Introduction Purpose of this documentation These instructions are a brief summary of important features, functions and safety information, and contain all information required for safe use of the device. Read the instructions carefully prior to installation and commissioning. In order to use the device correctly, first review its principle of operation.

  • Page 12: Intended Use

    Introduction 2.5 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 13: Nameplate Layout

    Introduction 2.6 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 ⑦ Firmware and hardware identification Minimum/maximum measuring span ②...
  • Page 14 Introduction 2.6 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 2-2 Example Measuring point label...

  • Page 15: 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 only form one element of such a concept. SITRANS P320/P420 with 4 to 20 mA/HART...

  • Page 16: 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 17: 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 18: 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 19: Use In Hazardous Areas

    Safety instructions 3.3 Use in hazardous areas DANGER Using equipment with approval-related restrictions Risk of explosion, damage to property due to operating conditions not in conformity with the approval (e.g. temperature and pressure limits exceeded) ● Take note of the approval restrictions before using the device. You can find the information on this in the current certificates.
  • Page 20 Safety instructions 3.3 Use in hazardous areas WARNING Loss of safety of device with type of protection "Intrinsic safety Ex i" If the device has already been operated in non-intrinsically safe circuits or the electrical specifications have not been observed, the safety of the device is no longer ensured for use in hazardous areas.

  • Page 21: 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 22 Installing/mounting 4.1 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 23 ● 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 24: Installation Location Requirements

    Installing/mounting 4.1 Basic safety instructions 4.1.1 Installation location requirements WARNING Insufficient air supply The device may overheat if there is an insufficient supply of air. ● Install the device so that there is sufficient air supply in the room. ● Observe the maximum permissible ambient temperature. Refer to the information in the section Technical data (Page 63).

  • Page 25: Proper Mounting

    Installing/mounting 4.2 Installation (except level) 4.1.2 Proper mounting WARNING Incorrect mounting at Zone 0 Risk of explosion in hazardous areas. ● Ensure sufficient tightness at the process connection. ● Observe the standard IEC/EN 60079-14. CAUTION Loss of type of protection Damage to device if the enclosure is open or not properly closed.

  • Page 26: Installation (Except Level)

    Installing/mounting 4.2 Installation (except level) Installation configuration for gases Install the pressure transmitter above the pressure sampling point. Lay the pressure tubing with a constant gradient to the pressure sampling point, so that any condensation produced can drain in the main line and thereby avoid corruption of the measured values.

  • Page 27: Fastening With The Mounting Bracket

    Installing/mounting 4.2 Installation (except level) Procedure 1. Attach the pressure transmitter to the process connection. Use an appropriate tool (e.g. open-ended wrench with width across flats 36). Otherwise, the measuring cell may be damaged. 2. Turn only on the key area above the process connection. Caution: If you turn the pressure transmitter on the housing, the measuring cell may be damaged.

  • Page 28: Installation (Level)

    Installing/mounting 4.3 Installation (level) Example 2: Pipe mounting of pressure transmitter (differential pressure series) The mounting bracket for the differential pressure series includes, among other things: ● 4 screws ● One pipe clamp with nuts ● Washers You can then mount the pressure transmitter in different positions: Installation (level) Mounting location Verify that the mounting location meets the following conditions:...

  • Page 29: Mounting On The Container

    Installing/mounting 4.3 Installation (level) Protect the pressure transmitter from: ● Direct heat radiation ● Rapid temperature fluctuations ● Heavy contamination ● Mechanical damage ● Direct sunlight Note Select the height of the mounting flange such that the pressure transmitter is always mounted below the lowest fill height to be measured.
  • Page 30 Installing/mounting 4.3 Installation (level) Formula: Lower range value: p = ρ · g · h Upper range value: p = ρ · g · h Measurement assembly on an open container Lower filling level Δp Lower range value Upper filling level Δp Upper range value Pressure...
  • Page 31 Installing/mounting 4.3 Installation (level) Lay the line in such a way that condensation pockets do not form. If required, you need to install a condensation container below the negative pressure line of the pressure transmitter. Formula: Lower range value: Δp = ρ...
  • Page 32 Installing/mounting 4.3 Installation (level) To compensate the liquid column on the minus side, reset the zero point. Formula: Lower range value: Δp = g · (h · ρ - h · ρ') Upper range value: Δp = g · (h ·...

  • Page 33: Removing

    Installing/mounting 4.4 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 34 Installing/mounting 4.4 Removing SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 35: 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 63).
  • Page 36 Connecting 5.1 Basic safety instructions WARNING Lack of equipotential bonding Danger of explosion through compensating currents or ignition currents through lack of equipotential bonding. For devices of intrinsic safety "db", "ec", "tb" or "tc" which are operated in a non-intrinsically safe circuit, observe the following: ●...
  • Page 37 Connecting 5.1 Basic safety instructions WARNING Incorrect selection of type of protection Risk of explosion in hazardous areas. This device is approved for various types of protection. 1. Select an intrinsic safety type of protection "ia", "ib", "ic" or non-intrinsic safety "db", "tb", "tc", "ec".
  • Page 38 Connecting 5.1 Basic safety instructions Note Electromagnetic compatibility (EMC) You can use this device in industrial environments, households and small businesses. For metal housings there is an increased electromagnetic compatibility compared to high- frequency radiation. This protection can be increased by grounding the housing, see Technical data (Page 63).

  • Page 39: Connecting The Device

    Connecting 5.2 Connecting the device Connecting the device 5.2.1 Opening the device Procedure ① Safety catch (optional) ② Cover of the electrical cable compartment. Figure 5-2 Rear view of pressure transmitter ① 1. Use a 3 mm Allen key to loosen the safety catch ②...

  • Page 40: Connecting The Device

    Connecting 5.2 Connecting the device 5.2.2 Connecting the device Procedure - Test + ① ⑥ Feed separator with integrated load Safety catch ② ⑦ Supply voltage Process connection ③ ⑧ Cable gland Protective conductor connector/ equipotential bonding terminal ④ ⑨ Connecting terminals Ground terminal ⑤...

  • Page 41: Closing The Device

    Connecting 5.2 Connecting the device ④ 3. Connect the wires to the connection terminals "+" and "-", observing the polarity and the torques. – Use wires with a diameter of 0.5 ... 2.5 mm – If you use stranded wire used, you need a ferrule. ⑨...
  • Page 42 Connecting 5.2 Connecting the device ④ ⑦ 1. Screw on the cover as far as it will go. Make sure that there is no gap between enclosure and cover. ③ ⑥ 2. Secure each cover with the cover catch by removing the screw. ①...

  • Page 43: 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 44: Switching On The Supply Voltage

    Commissioning 6.2 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 45: Commissioning The Device

    Commissioning 6.4 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 46 Commissioning 6.4 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 47: Commissioning With Steam Or Liquid

    Commissioning 6.4 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 6.4.2 Commissioning with steam or liquid Requirement All valves are closed.

  • Page 48: Differential Pressure And Flow Rate

    Commissioning 6.5 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 49 Commissioning 6.5 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 50: Commissioning For Liquids

    Commissioning 6.5 Differential pressure and flow rate 6.5.2 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 51: Commissioning With Vapor

    Commissioning 6.5 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 52 Commissioning 6.5 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 53 Commissioning 6.5 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 54 Commissioning 6.5 Differential pressure and flow rate SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 55: Service And Maintenance

    Service and maintenance Basic safety instructions The device is maintenance-free. However, a periodic inspection according to pertinent directives and regulations must be carried out. An inspection can include check of: ● Ambient conditions ● Seal integrity of the process connections, cable entries, and cover screws ●...

  • Page 56: Cleaning

    Maintenance and repair work WARNING Impermissible repair and maintenance of the device ● Repair and maintenance must be carried out by Siemens authorized personnel only. WARNING Impermissible repair of explosion protected devices Risk of explosion in hazardous areas ●...

  • Page 57: Defining The Maintenance Interval

    Service and maintenance 7.3 Maintenance and repair work CAUTION Hot surfaces Risk of burns during maintenance work on parts having surface temperatures exceeding 70 °C (158 °F). ● Take corresponding protective measures, for example by wearing protective gloves. ● After carrying out maintenance, remount touch protection measures. 7.3.1 Defining the maintenance interval WARNING...

  • Page 58: 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. Note Using the wrong seals Using the wrong seals with flush-mounted process connections can cause measuring errors and/or damage the diaphragm.

  • Page 59: Diagnostics Messages

    For further details, refer to the operating instructions. See also Decontamination declaration (http://www.siemens.com/sc/declarationofdecontamination) Return document (http://www.siemens.com/processinstrumentation/returngoodsnote) Disposal Devices described in this manual should be recycled. They may not be disposed of in the municipal waste disposal services according to the Di‐...
  • Page 60 Service and maintenance 7.5 Disposal SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 61: Technical Data

    Technical data Input 8.1.1 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 62: Gauge Pressure With Front-Flush Diaphragm

    Technical data 8.1 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 63: Gauge Pressure From The Differential Pressure Series

    Technical data 8.1 Input 8.1.3 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 64: Absolute Pressure From The Gauge Pressure Series

    Technical data 8.1 Input 8.1.4 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 65: Absolute Pressure With Front-Flush Diaphragm

    Technical data 8.1 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) Lower range value Between the measuring limits (continuously adjustable) 8.1.5 Absolute pressure with front-flush diaphragm Absolute pressure with front-flush diaphragm...

  • Page 66: Absolute Pressure From The Differential Pressure Series

    Technical data 8.1 Input 8.1.6 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 67: Differential Pressure And Flow

    Technical data 8.1 Input 8.1.7 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 68: Level

    Technical data 8.1 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 69: Measuring Accuracy Of Sitrans P320

    Technical data 8.2 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 70 Technical data 8.2 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 71: Gauge Pressure From The Differential Pressure Series

    Technical data 8.2 Measuring accuracy of SITRANS P320 8.2.4 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 72: Absolute Pressure From Gauge And Differential Pressure Series

    Technical data 8.2 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 73: Absolute Pressure With Front-Flush Diaphragm

    Technical data 8.2 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 74: Gauge Pressure With Front-Flush Diaphragm

    Technical data 8.2 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) 8.2.7 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 75: Differential Pressure And Flow

    Technical data 8.2 Measuring accuracy of SITRANS P320 8.2.8 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 76 Technical data 8.2 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 77 Technical data 8.2 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 78: Level

    Technical data 8.2 Measuring accuracy of SITRANS P320 8.2.9 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 79: Measuring Accuracy Of Sitrans P420

    Technical data 8.3 Measuring accuracy of SITRANS P420 Measuring accuracy of SITRANS P420 8.3.1 Reference conditions ● According to EN 60770-1/IEC 61298-1 ● Rising characteristic curve ● Lower range value 0 bar/kPa/psi ● Seal diaphragm stainless steel ● Measuring cell with silicone oil filling ●...

  • Page 80: Gauge Pressure From The Differential Pressure Series

    Technical data 8.3 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 81 Technical data 8.3 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 82: Absolute Pressure From Gauge And Differential Pressure Series

    Technical data 8.3 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) 8.3.5 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 83: Absolute Pressure With Front-Flush Diaphragm

    Technical data 8.3 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 84: Gauge Pressure With Front-Flush Diaphragm

    Technical data 8.3 Measuring accuracy of SITRANS P420 8.3.7 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 85 Technical data 8.3 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 86 Technical data 8.3 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 87 Technical data 8.3 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 88: Level

    Technical data 8.3 Measuring accuracy of SITRANS P420 8.3.9 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 89: Operating Conditions

    Technical data 8.4 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 90 Technical data 8.4 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 91 Technical data 8.4 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 92 Technical data 8.4 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 93: Vibration Resistance

    Technical data 8.5 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 94 Technical data 8.5 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 95: Construction

    Technical data 8.6 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 96 Technical data 8.6 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 97 Technical data 8.6 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 98 Technical data 8.6 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 99: Torques

    Technical data 8.8 Display, keyboard and auxiliary power Torques Torques Terminal compartment 0.4 to 0.8 Nm (0.3 to 0.6 ft lb) ● Connecting terminals Cable glands/blanking plugs 4 Nm (3 ft lb) ● Screw-in torque for plastic gland in all enclosures 6 Nm (4.4 ft lb) ●...

  • Page 100: Certificates And Approvals

    Technical data 8.9 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 101 Technical data 8.9 Certificates and approvals Certificates and approvals Designation 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 102 Technical data 8.9 Certificates and approvals SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 103: 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 104: Certificates

    Appendix A A.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 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

  • Page 105: Index

    Index Instuctions and manuals, 103 Ambient temperature, 89, 90, 91, 92 Effect, 73, 83 Laws and directives Disassembly, 17 Personell, 17 Layout of nameplate with general information, 13 Blowout valve, 46 Blowout valves, 49 Maintenance, 55 Manuals, 103 Modifications Certificates, 17, 104 correct usage, 18 Cleaning, 56 improper, 18...
  • Page 106 Index Technical Support, 103 Partner, Personal contact, 103 Test certificates, 17 Vent valve, 51, 52 Warranty, 16 SITRANS P320/P420 with 4 to 20 mA/HART Compact Operating Instructions, 09/2018, A5E38874562-AB...

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