Endress+Hauser Deltabar S PMD75 Technical Information

Differential pressure transmitter with ceramic and silicon sensors overload-resistant and function-monitored; communication via hart, profibus pa or foundation fieldbus
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Technical Information

Deltabar S PMD70/75, FMD76/77/78
Differential pressure measurement
Differential pressure transmitter with ceramic and silicon sensors
Overload-resistant and function-monitored; Communication via
HART, PROFIBUS PA or FOUNDATION Fieldbus
Application
The Deltabar S differential pressure transmitter is used
for the following measuring tasks:
• Flow measurement (volume or mass flow) in
conjunction with primary devices in gases, vapors and
liquids
• Level, volume or mass measurement in liquids
• Differential pressure monitoring, e.g. of filters and
pumps
• International usage thanks to a wide range of approvals
TI00382P/00/EN/19.14
No. 71254471
Your benefits
• Very good reproducibility and long-term stability
• High reference accuracy: up to r0.075 %,
as PLATINUM version: r0.05 %
• Turn down up to 100:1, higher on request
• Used for flow and differential pressure monitoring
up to SIL 3, certified to IEC 61508 by TÜV SÜD
®
• HistoROM
/M-DAT memory module
• Function-monitored from the measuring cell to the
electronics
• Continuous modularity for differential pressure,
hydrostatics and pressure (Deltabar S, Deltapilot S,
Cerabar S), e.g.
– replaceable display
– universal electronics
• Quick commissioning with Quick Setup menu
• Menu-guided operation
• Extensive diagnostic functions
• New TempC diaphragm for diaphragm seals:
Minimum temperature effects and short recovery
times

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Summary of Contents for Endress+Hauser Deltabar S PMD75

  • Page 1: Technical Information

    Technical Information Deltabar S PMD70/75, FMD76/77/78 Differential pressure measurement Differential pressure transmitter with ceramic and silicon sensors Overload-resistant and function-monitored; Communication via HART, PROFIBUS PA or FOUNDATION Fieldbus Application Your benefits The Deltabar S differential pressure transmitter is used • Very good reproducibility and long-term stability •...
  • Page 2: Table Of Contents

    FMD76 ......... . . 26 Endress+Hauser...
  • Page 3 FMD77 ......... . . 88 FMD77 (continued) ........89 Endress+Hauser...
  • Page 4: Function And System Design

    Output 4 to 20 mA with superimposed HART protocol, PROFIBUS PA or FOUNDATION Fieldbus Options – High-pressure version up to p 700 bar (10500 psi) stat – PMD75, FMD77, FMD78: gold-rhodium-coated process isolating diaphragm, NACE-compliant material – Separate housing Endress+Hauser...
  • Page 5: Measuring Principle

    (semi-conductor technology). The change in the bridge output voltage, which depends on the differential pressure, is measured and processed further. Advantages: • Standard system pressures: 160 bar (2400 psi) and 420 bar (6300 psi) • High long-term stability • Very high single-sided overload resistance Endress+Hauser...
  • Page 6: Flow Measurement

    • The totalizing mode and unit can be individually set for each totalizer. This allows independent daily and annual quantity totalizing. • With the Deltatop product family, Endress+Hauser is offering universal and reliable solutions for flow measurement: – Deltatop, the compact, ready-to-use flow measuring unit including the Deltabar S differential pressure...
  • Page 7: Level Measurement (Level, Volume And Mass)

    • 4 to 20 mA with HART communication protocol • PROFIBUS PA – The Endress+Hauser devices meet the requirements of the FISCO model. – Due to the low current consumption of 13 mA ± 1 mA, the following number of devices can be operated on one bus segment if installing as per FISCO: –...
  • Page 8: Input

    For PMD75 devices with CRN-approved process connections, the MWP is • with the use of O rings: 315 bar (4725 psi) • with the use of PTFE and CU seals: 120 bar (1800 psi) "–" side: 100 bar (1500 psi) 420 bar (6300 psi) only PMD75 Endress+Hauser...
  • Page 9: Explanation Of Terms

    This span is based on the zero point. P01-xMD7xxxx-05-xx-xx-xx-007 Example: 500 mbar (7.5 psi) measuring cell Set span Zero-based span Nominal value i upper range limit (URL) Nominal measuring range Sensor measuring range Lower range limit Upper range limit Lower range value Upper range value Endress+Hauser...
  • Page 10: Output

    When operating via a handheld terminal or via a PC with an operating program, a minimum communication resistance of 250 : must exist within the loop. • Current output: 1 PA Resolution • Display: can be set (factory setting: presentation of the maximum accuracy of the transmitter) Endress+Hauser...
  • Page 11: Dead Time, Time Constant

    • 500 mbar (7.5 psi) • 1260 • 1443 • 3 bar (45 psi) • 1160 • 1213 FMD77, max. Dependent on the diaphragm seal FMD78 Reading cycle • Acyclic: max. 3/s, typical 1/s (depends on command # and number of preambles) Endress+Hauser...
  • Page 12: Dynamic Behavior: Profibus Pa

    PLC cycle time. A new value can be determined up to 5 times per second. Response time • Cyclic: approx. 10 to 13 ms (depends on Min. Slave Interval) • Acyclic: approx. 60 to 70 ms (depends on Min. Slave Interval) Endress+Hauser...
  • Page 13: Dynamic Behavior: Foundation Fieldbus

    • Via onsite display, handheld terminal or PC with operating program, continuous from 0 to 999 s • Additionally for HART and PROFIBUS PA: via DIP switch on the electronic insert, switch position "on" = set value and "off" • Factory setting: 2 s Endress+Hauser...
  • Page 14: Protocol-Specific Data

    Measured values for PV (über Analog Input Function Block) • Pressure • Flow • Level • Tank content Measured values for SV • Pressure • Temperature Measured values for QV • Totalizer Input values Input value sent from PLC, can be shown on display Endress+Hauser...
  • Page 15 • Restart • Configure error as warning or alarm • HistoROM • Peakhold • AlarmInfo • SensorTrimm Number of VCRs • 44 (Device Revision 6) • 24 (Device Revision 7) Number of Link Objects in VFD Only with FF912 Endress+Hauser...
  • Page 16 (channel 5) Dp Flow Block Contains flow and totalizer parameter Totalizer 1 (channel 6) Diagnostic Block Contains diagnostic information Error code via DI channels (channel 0 to 16) Display Block Contains parameters to configure the onsite display No output values Endress+Hauser...
  • Page 17 This block contains all process alarm conditions 35 ms 35 ms standard enhanced (working like a comparator) and represents them at the output. Additional function block information: Instantiate Function Block Number of additional instantiate blocks Without trend and alarm reports Endress+Hauser...
  • Page 18: Power Supply

    • Use a twisted, shielded two-wire cable, preferably cable type A Note! For further information on the cable specifications, see Operating Instructions BA00034S "PROFIBUS DP/PA: Guidelines for planning and commissioning", the PNO Guideline 2.092 PROFIBUS PA User and Installation Guideline" and IEC 61158-2 (MBP). Endress+Hauser...
  • Page 19 Not assigned Signal – Earth A0011175 Endress+Hauser offers the following accessories for devices with an M12 plug: Plug-in jack M 12x1, straight • Material: body PA; coupling nut CuZn, nickel-plated • Degree of protection (fully locked): IP67 • Order number: 52006263 Plug-in jack M 12x1, elbowed •...
  • Page 20 – Delivery status – Minimum supply voltage: 11.5 V DC – Measuring 4 to 20 mA test signal via the plus and test terminal: Test Test not possible. – Minimum supply voltage: 10.5 V DC Endress+Hauser...
  • Page 21: Supply Voltage

    ä 79 ff, feature 30 "Housing; Cable entry; Protection". Cable entry Cable specification • Endress+Hauser recommends using shielded, twisted-pair two-wire cables. • Terminals for core cross-sections 0.5 to 2.5 mm (20 to 14 AWG) • Cable outer diameter: 5 to 9 mm (0.2 to 0.35 in) depends on the used cable gland (o ä 20)

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