Technical Data
CompareContinuous / Liquids
| Measuring Principle | Differential pressure |
| Characteristic / Application | Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids. |
| Supply / Communication | 4...20 mA HART |
| Accuracy | 0.075% of individual sensor, "PLATINUM" 0.05% of individual sensor |
| Long term stability | 0.05% of URL/year of individual sensor |
| Ambient temperature | –40...+80°C (–40... +176°F) |
| Process temperature | –40...+125°C (–40 ... +257°F) |
| Process pressure / max. overpressure limit | 160 bar (2400 psi) |
| Pressure measuring range | 400 mbar...10 bar (6 psi...150 psi) |
| Main wetted parts | 316L, Alloy C |
| Process connection | Threads Flange (DIN, ASME,JIS) |
| Process connection hygienic | DIN11851 DIN11864-1 Tri-Clamp DRD Varivent |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, CSA, CSA C/US IEC Ex, NEPSI, INMETRO |
| Design approvals | NACE MR0175 EN10204-3.1 |
| Hygienic approvals | FDA |
| Options | 4-line digital display SS- or Aluminium housing |
| Application limits | Use the Software Applicator Sizing Electronic DP |
Pressure
| Measuring Principle | Differential pressure |
| Characteristic | Electronic differential pressure transmitter with metal sensor for level, volume or mass measurement in liquids. |
| Supply voltage | 4...20 mA HART: 12...45V DC (Non Ex) Ex ia: 12...30V DC |
| Reference Accuracy | 0.075% of individual sensor, "PLATINUM" 0.05% of individual sensor |
| Long term stability | 0.05% of URL/year of individual sensor |
| Process temperature | –40...+125°C (–40...+257°F) |
| Ambient temperature | –40...+80°C (–40...+176°F) |
| Measuring cell | 400 mbar...10 bar (6 psi...150psi) |
| Vacuum resistance | 10 mbar (0.15 psi) |
| Max. overpressure limit | 160 bar (2400 psi) |
| Process connection | Threads Flange (DIN, ASME,JIS) |
| Process connection hygienic | DIN11851 DIN11864-1 Tri-Clamp DRD Varivent |
| Material process membrane | 316L, AlloyC, |
| Fill fluid | Silicone oil Synthetic oil |
| Material housing | Die-cast aluminum Stainless steel |
| Communication | 4...20 mA HART |
| Certificates / Approvals | ATEX, FM, CSA, IECEx, NEPSI, INMETRO, UK Ex |
| Design approvals | NACE MR0175, EN10204-3.1, |
| Hygienic approvals | EHEDG 3A |
The Deltabar FMD72 electronic differential pressure measurement system measures the pressure, level, volume or mass of liquids in pressurized vessels or distillation towers/evaporators. The high-pressure sensor (HP) measures the hydrostatic pressure of the liquid, the low-pressure sensor (LP) measures the top pressure, and the transmitter calculates the level from the sensor inputs. The electronic remote differential pressure level measurement system eliminates the problems encountered with conventional differential pressure measurement.
Benefits:
Eliminates measured-value drift caused by ambient temperature changes
· Eliminates condensation or evaporation and blockages in the impulse lines
· Eliminates the high cost of winter heating and frost protection of impulse lines (installation, insulation)
· Eliminates the leak-prone pipes and fittings of conventional systems
· Multivariable level measurement: the same system provides differential pressure, top pressure and temperature measurement via HART communication
· Diagnostics via HART communication indicate the overall system operating status
· Intuitive, menu-guided commissioning
Application areas:
For differential pressure, level, volume and mass measurement in pressurized tanks and distillation columns/evaporators
· Process connections: thread, flange and hygienic connections
· Process temperature: -40...+125 °C (-40...+257 °F), optionally 250 °C (480 °F)
· Measuring range: 400 mbar ... +40 bar (6 ... 600 psi)
· Accuracy: sensor up to ±0.05 %, system up to ±0.07 %
· International explosion protection and hygienic approvals
Spare Parts & Accessories 46
46 spare parts · click to collapse
| Order code | Description | |
|---|---|---|
| 71111056 | Atmospheric compensation filter portConsists of: Vent screw 304. Pressure compensation filter. O-ring EPDM, protection lid. Usage: FMB50, FMB51, FMB52, FMB53, FMD71, FMD72, FMD76, FMD77, FMD78, FMR60B, FMR62B, FMR63B, FMR66B, FMR67B, PMC51, PMC71, PMD70, PMD75, PMP71, PMP75, PMP51, PMP55. | Details |
| 71002811 | cover with viewing windowMaterial: 316L Sight glass: Polycarbonat PC flat gasket VMQ, centering ring, screw approval A,F,R,S,U,1,6 Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
| 52024110 | key housingfor external operation consists of: push button, cover + screws colour: dark grey | Details |
| 71290825 | Grounding terminalConsists of: spring washer, screw, earth handle, clamp. Usage: housing T14/T15/T17, FMB70, FMD71/FMD72/ FMD77/FMD78, PMC71, PMP71/PMP75, PMD70/PMD75. Housing F30/F31, FMB50/FMB51/FMB52/ FMB53, PMC51, PMD55, PMP51/PMP55. | Details |
| 52020432 | Aluminum cover with gasketMaterial: Aluminium, coated O-ring EPDM, FDA not for EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
| 52020433 | Aluminum cover with gasketMaterial: Aluminium, coated O-ring EPDM, FDA for EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 | Details |
| 52020433 | Aluminum cover with gasketMaterial: Aluminium, coated O-ring EPDM, FDA for EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 | Details |
| 71245247 | Aluminum coverMaterial: aluminium, coated. Sight glass: mineral glass, coated. O-ring EPDM, FDA. Not for EEx d/XP. Usage: FMB70, FMD71/FMD72/FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/PMP75. | Details |
| 71245249 | Aluminum coverMaterial: aluminium. Sight glass mineral glass, coated. O-ring EPDM, FDA. Individual tested, EEx d/XP. Usage: FMD71/FMD72/FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/PMP75. | Details |
| 71245250 | CoverMaterial: 316L. Sight glass: mineral glass, coated. O-ring EPDM, FDA. Individual tested, EEx d/XP. Usage: FMD71/FMD72/FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/PMP75. | Details |
| 71206968 | Stainless Steel CoverMaterial: 316L. Sight glass: mineral glass,coated. O-ring FVMQ. Individual tested, EEx d/XP. Usage: FMD71/FMD72/FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/PMP75. | Details |
| 71002774 | Stainless Steel CoverMaterial: 316L flat gasket VMQ, centering ring, screw not for EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
| 71002810 | cover with viewing windowMaterial: 316L Sight glass: mineral glass flat gasket VMQ, centering ring, screw approval 2,3,4,8,Q,W,7,8 Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
| 52020429 | Seal ring assemblyconsists of: 5x O-ring 75,87x2.62, EPDM, PTFE, FDA | Details |
| 52028310 | Stainless Steel CoverMaterial: 316L O-ring EPDM, FDA individual tested, EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 | Details |
| 52028310 | Stainless Steel CoverMaterial: 316L O-ring EPDM, FDA individual tested, EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 | Details |
| XPP0006- | Electronic module FMD72Transmitter electronis. Usage: FMD71/FMD72. | Enquire |
| 71191892 | terminal blockRFI-filter. Usage: FMB70, FMD71/FMD72/FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/PMP75. | Details |
| 71191894 | terminal blockOvervoltage protection, RFI-filter. Usage: FMB70, FMD71/FMD72/FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/PMP75. | Details |
| 71002865 | Display moduleDigital display with snapped bracket languages de, en, fr, es, it, nl for electronics from software version 2.0 languages ja, zh for electronics from software version 2.0.1 Cerabar S PMC71,PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70 | Details |
Configurator / Comparison
Source: public information from the Endress+Hauser website
Measuring principle video
Click to playManuals & Documents 6
All documents for this model6 documents · click to expand
Case 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.
Related Products
Endress+HauserDeltabar M PMD55
Endress+HauserDeltabar S PMD75
Endress+HauserDeltabar PMD55B
Endress+HauserDeltabar PMD78B
Endress+HauserDeltabar S FMD77
Endress+HauserDeltabar FMD71
Endress+HauserDeltabar PMD75B
Endress+Hauser