Technical Data
CompareContinuous / Liquids
| Measuring Principle | Differential pressure |
| Characteristic / Application | Transmitter with metal membrane for differential pressure monitoring in liquids or gases. Intuitive and clear wizard for commissioning. |
| Specialities | Zero/Span buttons, Testclamp, RFID TAG for easy identification |
| Supply / Communication | Ex d, Ex e, non-Ex: 10.5...35V DC Ex i: 10.5...30V DC |
| Accuracy | Standard: up to 0.065 % Platinum: up to 0.055 % |
| Long term stability | 0.1 % of URL/ year 0.2 % of URL/ 5 years 0.25 % of URL/ 10 years |
| Ambient temperature | -40°C...+85°C (-40°F...+185°F) |
| Process temperature | -40°C...+110°C (-40°F...+230°F) |
| Process connection | NPT1/4-18 |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, IECEx, JPN Ex, INMETRO, NEPSI |
| Safety approvals | SIL |
| Design approvals | EN10204-3.1, NACE MR0103, NACE MR0175 |
Pressure
| Measuring Principle | Differential pressure |
| Characteristic | Transmitter with metal membrane for differential pressure monitoring in liquids or gases. Intuitive and clear wizard for commissioning. |
| Supply voltage | Ex d, Ex e, non-Ex: 10.5...35V DC Ex i: 10.5...30V DC |
| Reference Accuracy | Standard: up to 0.065 % Platinum: up to 0.05 % |
| Long term stability | 0.1 % of URL/ year 0.2 % of URL/ 5 years 0.25 % of URL/ 10 years |
| Process temperature | -40°C...+110°C (-40°F...+230°F) |
| Ambient temperature | -40°C...+85°C (-40°F...+185°F) |
| Measuring cell | 100 mbar...40 bar (1.45 psi...580 psi) |
| Smallest calibratable span | 0.3 mbar (0.0043 psi) |
| Vacuum resistance | 25 mbar (0.0375 psi) |
| Max. Turn down | 100:1 |
| Max. overpressure limit | 375 bar (5625 psi) |
| Process connection | NPT1/4-18 |
| Material process membrane | 316L, AlloyC, Gold |
| Material gasket | PTFE, FKM, EPDM, FFKM |
| Fill fluid | Silicone oil, Inert oil |
| Material housing | Aluminum, 316L |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, IECEx, JPN Ex, INMETRO, NEPSI |
| Safety approvals | SIL |
| Design approvals | EN10204-3.1, NACE MR0103, NACE MR0175 |
| Specialities | Zero/Span buttons, Testclamp, RFID TAG for easy identification |
Deltabar PMD50 - differential pressure transmitter
Transmitter with metallic diaphragm for measuring differential pressure, level and flow of liquids and gases
Advantages
Software wizards enable fast and simple commissioning
Device developed in accordance with IEC 61508
Flexible write protection via hardware and/or software wizards
Pre-assembled manifold (pressure and leak tested) for faster installation
Field of application
The Deltabar PMD50 is a differential pressure transmitter with a metallic diaphragm for measuring liquids and gases. It is optimized for standard applications and offers intuitive operating functions.
Pressure measuring range: up to 40 bar (600 psi)
Process temperature up to 400°C (752°F) when using diaphragm seals
Accuracy: up to +/-0.055%
Benefits
Software wizards enable fast and simple commissioning
Device developed in accordance with IEC 61508
Flexible write protection via hardware and/or software wizards
Pre-assembled manifold (pressure and leak tested) for faster installation
Lean selection
Standard product
Reliable, robust, low maintenance
Spare Parts & Accessories 39
39 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71487198 | Blind plug, M20, 316L, O-ring EPDMConsists of: blind plug, O-ring PTFE coated 17.0x2.0. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71679714 | Blind plug M20, Alu, Ex dConsists of: Plug IEC/ATEX Ex d marking, o-ring PTFE coated 17,0x2,0. Usage: FMG50, FMP51, FMP52, FMP54, FMP55, FMP56, FMP57, FMR51, FMR52, FMR53, FMR54, FMR57, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL64, OFMP50, OFMP51, OFMP57, OFMR51, OFMR54, OFTL41, OFTL51B, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71487199 | Plug: M20, aluminum, EPDM sealing ringConsists of: blind plug, O-ring PTFE coated 17.0x2.0. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71679712 | Blind plug M20, 316L, Ex dConsists of: Plug IEC/ATEX Ex d marking o-ring PTFE coated 17,0x2,0. Usage: FMG50, FMP51, FMP52, FMP54, FMP55, FMP56, FMP57, FMR51, FMR52, FMR53, FMR54, FMR57, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL62, FTL64, OFMP51, OFMP57, OFMR51,OFMR54, OFTL51B, PMC71B, PMD50, PMD75B, PMD78B, PMP50, PMP71B. | Details |
| 71487201 | Blind plug, NPT1/2, aluminumConsists of: blind plug, PTFE coated. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71679718 | Blind plug NPT1/2, Alu, Ex dConsists of: Plug IEC/ATEX Ex d marking, PTFE coated. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL64, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71487203 | Blind plug, NPT1/2, 316LConsists of: blind plug, PTFE coated. Usage: FHX50B, FTL51B, FTL62, FTL63, FTL64, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, NMT81, PMC51B, PMC71B, PMD50, PMD55B, PMD75B, PMD78B, PMP50, PMP51B, PMP71B. | Details |
| 71679715 | Blind plug NPT1/2, 316L, Ex dConsists of: Plug IEC/ATEX Ex d marking, PTFE coated. Usage: FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL64, PMC71B, PMD50, PMD75B, PMD78B, PMP71B, PMP50. | Details |
| 71435135 | Cable gland M20, plastic, suitable for models: FTL41, FTL51B, PMC51B, PConsists of: Cable gland, O-ring 17.0 x 2.0 PTFE coated. Usage: FHX50B, FMB70, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD50, PMD55B, PMD63B, PMD75B, PMD78B, PMP50, PMP51B, PMP63B, PMP71B. | Details |
| 71435136 | Cable gland M20, nickel-plated brass, suitable for: FMG50, FTL41, FTL51B, PConsists of: Cable gland, O-ring 17.0 x 2.0 PTFE coated. Usage: FHX50B, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL41, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71435137 | Cable gland M20, 316L, suitable for models: FMG50, FTL51B, PMC51BConsists of: Cable gland, O-ring 17.0 x 2.0 PTFE coated. Usage: FHX50B, FMG50, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL63, FTL64, PMC51B, PMC71B, PMD55B, PMD75B, PMD78B, PMP51B, PMP71B. | Details |
| 71474251 | Enclosure grounding terminal L+PConsists of: spring washer, screw, earth handle, clamp. Usage Liquiphant: Only for digital communication. Usage: FHX50B, FMG50, PMD50, PMD55B, PMD63B, PMD75B, PMD78B, PMC51B, PMC71B, PMP50, PMP51B, PMP63B, PMP71B, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, FTL51B, FTL62, FTL63, FTL64. | Details |
| 71652584 | Cover Alu, closedSealing ring: HNBR. Usage: PMD50, PMP50. | Details |
| 71652584 | Cover Alu, closedSealing ring: HNBR. Usage: PMD50, PMP50. | Details |
| 71652585 | Cover, aluminium, with sight glassSight glass: Soda lime glass. Usage: PMD50, PMP50. | Details |
| 71652587 | Housing cover, aluminum, flameproofSealing ring: HNBR. Usage: PMD50, PMP50. | Details |
| 71652587 | Housing cover, aluminum, flameproofSealing ring: HNBR. Usage: PMD50, PMP50. | Details |
| 71652606 | Aluminium cover, sight glass, Ex dSealing ring: HNBR. Sight glass: Soda lime glass. Usage: PMD50, PMP50. | Details |
| 71652609 | Cover red Alu, sight glass, Ex dSealing ring: HNBR. Sight glass: Soda lime glass. Usage: PMD50, PMP50. | Details |
| 71652610 | Cover 316L, sight glass, Ex dSealing ring: HNBR. Sight glass: Soda lime glass. Usage: PMD50, PMP50. | Details |
Configurator / Comparison
Source:Endress+Hauserpublic information from the website
Measuring principle video
Click to playManuals & Documents 4
All documents for this modelCase Studies
Municipal Wastewater Treatment · Differential Pressure Measurement — Application Case
Project Overview
The site is the inlet, biological and outlet stages of a municipal plant. The customer wanted Differential Pressure Measurement properly configured on the existing plant, with the aim of differential pressure for flow and filter monitoring.
Technical Challenges
What actually causes trouble is high solids and corrosive fractions, with large diurnal flow swings, and effluent parameters drift and probes foul with sludge and biofilm. All of this means the Differential Pressure Measurement configuration has to involve checking static pressure limit, overload margin and impulse lines.
Configuration
Supply and installation were organised through the pressure range: pressure solution matched to process pressure and temperature. On site this meant checking static pressure limit, overload margin and impulse lines, checked line by line against: stable compliance with Grade 1A discharge limits and online data reporting.
Performance
After commissioning the outcome is filters changed on pressure drop, using cartridges to their full life, and the readings are now used for process tuning.
Food & Beverage · Differential Pressure Measurement — Application Case
Site Conditions
This is a Food & Beverage customer whose plant is at dosing, pasteurising, filling and CIP stages. The main task was differential pressure for flow and filter monitoring.
The Problem
The difficulty lies in syrups, dairy and beverages that scale easily, under strict hygienic requirements; at the same time frequent cleaning demands instruments that withstand hot CIP/SIP caustic cycles. Specification therefore means checking static pressure limit, overload margin and impulse lines.
What We Did
We took a pressure range approach — pressure solution matched to process pressure and temperature. Delivery was built around checking static pressure limit, overload margin and impulse lines, with point-by-point checks on: food-safety and hygienic design per 3-A / EHEDG.
Operating Outcome
In service the system performs as intended — filters changed on pressure drop, using cartridges to their full life, with routine maintenance falling noticeably.
Chemical & Pharmaceutical · Differential Pressure Measurement — Application Case
Application Context
reactors, metering vessels and finished-product tanks is a typical Chemical & Pharmaceutical duty. The project started from Differential Pressure Measurement, focusing on differential pressure for flow and filter monitoring.
Process Constraints
corrosion plus Ex protection shortens instrument life and makes downtime costly, and highly corrosive media with solvents and crystallisation, partly in explosive atmospheres only amplify it. The Differential Pressure Measurement specification must therefore cover checking static pressure limit, overload margin and impulse lines.
Delivery Approach
Delivery was handled as the pressure range — pressure solution matched to process pressure and temperature. Execution centred on checking static pressure limit, overload margin and impulse lines, together with Ex certification and GMP traceability of records.
Field Results
Operation shows the benefit clearly — filters changed on pressure drop, using cartridges to their full life, with confidence in this measuring point improving markedly.
Power & Energy · Differential Pressure Measurement — Application Case
Customer Profile
The typical setting in Power & Energy is boiler feedwater, turbine condensate and FGD/DeNOx systems. The measuring point is Differential Pressure Measurement; the focus is differential pressure for flow and filter monitoring.
Key Difficulties
Conditions are high temperature and pressure with both steam and saline water and, on top of that, drift under high temperature and pressure, with very costly unplanned outages, which a standard configuration cannot handle for long. The design therefore starts with checking static pressure limit, overload margin and impulse lines.
Implementation
The scope ran through the pressure range: pressure solution matched to process pressure and temperature. Technically it hinges on checking static pressure limit, overload margin and impulse lines, and on these requirements: compliance with power-industry codes and unit availability targets.
Customer Benefit
In practice this means filters changed on pressure drop, using cartridges to their full life, which cut the workload on the site maintenance team.
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