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PMD75 differential pressure transmitter

PMD75 differential pressure transmitter
Deltabar S PMD75
Configurable Models 11 models
The differential pressure transmitter adopts a metal sensor for differential pressure measurement.
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Continuous / Liquids

Measuring Principle Differential pressure
Characteristic / Application Digital transmitter with metallic measuring diaphragms
Modular transmitter
Long term stability
High static pressure/Overload resistance
Enhanced safety via self diagnostic functions
Secondary process barrier
Supply / Communication 4...20 mA HART:
10,5...45V DC
Ex ia: 10,5...30V DC
PROFIBUS PA /
FOUNDATION Fieldbus:
9...32V DC
Accuracy Standard: 0.05%
Platinum: up to 0.035%
Long term stability 0,05% of URL/year
Ambient temperature -50 °C...85 °C
(-58 °F...185 °F)
Process temperature -40 °C...85 °C
(-40 °F...185 °F)
Process pressure / max. overpressure limit 420 bar (6300 psi)
Pressure measuring range 10 mbar...250 bar
(0.15 psi...3750 psi)
Main wetted parts Alloy C276
316L
Monel
Tantalum
Process connection 1/4-18NPT
RC1/4"
Max. measurement distance 400 m (1.312 ft) H2O
Communication 4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Certificates / Approvals ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC
Safety approvals SIL
Design approvals EN 10204-3.1
NACE MR0175, MR0103
Marine approval GL/ ABS
Options HistoROM/M-Dat
4-line digital display
SS- or Aluminiumhousing
Separate housing
Successor PMD75B
Application limits Measuring cell:
Metal welded

Gas

Measuring Principle Differential pressure
Product headline Digital transmitter with metallic measuring diaphragms
Modular transmitter
Long-term stability
High static pressure/Overload resistance
Enhanced safety via self diagnostic functions
Secondary process barrier
Max. measurement error 0,075%
"PLATINUM" 0,05%
Max. process pressure max. 420 bar
(max. 6 091 psi)
Medium temperature range Temperature gradient from pressure piping
Display/Operation Option
Outputs 4...20mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Digital communication HART
PROFIBUS PA
FOUNDATION Fieldbus
Hazardous area approvals ATEX, FM, CSA, IECEx, INMETRO, NEPSI, TIIS
Functional safety SIL
Material certificates NACE MR0103
NACE MR0175
EN10204-3.1

Liquids

Measuring Principle Differential pressure
Product headline Digital transmitter with metallic measuring diaphragms
Modular transmitter
Long-term stability
High static pressure/Overload resistance
Enhanced safety via self diagnostic functions
Secondary process barrier
Max. measurement error 0,075%
"PLATINUM" 0,05%
Max. process pressure max. 420 bar
(max. 2175 psi)
Medium temperature range Temperature gradient from pressure piping
Display/Operation Option
Outputs 4...20mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Digital communication HART
PROFIBUS PA
FOUNDATION Fieldbus
Hazardous area approvals ATEX, FM, CSA, IECEx, INMETRO, NEPSI, TIIS
Functional safety SIL
Material certificates NACE MR0103
NACE MR0175
EN10204-3.1

Pressure

Measuring Principle Differential pressure
Characteristic Digital transmitter with metallic measuring diaphragms
Modular transmitter
Long-term stability
High static pressure/Overload resistance
Secondary process barrier
Supply voltage 4...20 mA HART
10,5...45V DC (Non Ex):
Ex ia: 10,5...30V DC
PROFIBUS PA:
9...32 V DC (Non Ex)
FOUNDATION Fieldbus:
9...32 V DC (Non Ex)
Reference Accuracy Standard: 0.05%
Platinum: up to 0.035%
Long term stability 0.03 % of URL/ year
0.05 % of URL/ 5 years
0.08 % of URL/ 10 years
Process temperature -40°C...85°C
(-40°F...185°F)
Ambient temperature -50°C...85°C
(-58°F...185°F)
Measuring cell 10 mbar...250 bar
(0.15 psi...3750 psi)
Smallest calibratable span 1 mbar (0.015 psi)
Vacuum resistance 50 mbar (0.73 psi)
Max. Turn down 100:1
Max. overpressure limit On one side:
420 bar
(6300psi)
Process connection 1/4-18NPT
RC1/4"
Material process membrane 316L, AlloyC,
Tantal,
Gold-Rhodium
Material gasket Viton, PTFE, EPDM, NBR
Fill fluid Silicone oil
Inert oil
Material housing 316L, Die-cast aluminum
Communication 4...20 mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Certificates / Approvals ATEX, FM, CSA, CSA C/US, IEC Ex, INMETRO, NEPSI, EAC, UK Ex
Safety approvals SIL
Design approvals NACE MR0103
EN10204-3.1
Marine approvals GL/ ABS
Specialities Diagnostic functions
Successor PMD75B

Steam

Measuring Principle Differential pressure
Product headline Digital transmitter with metallic measuring diaphragms
Modular transmitter
Long-term stability
High static pressure/Overload resistance
Enhanced safety via self diagnostic functions
Secondary process barrier
Max. measurement error 0,075%
"PLATINUM" 0,05%
Max. process pressure max. 420 bar
(max. 6091 psi)
Medium temperature range Temperature gradient from pressure piping
Display/Operation Option
Outputs 4...20mA HART
PROFIBUS PA
FOUNDATION Fieldbus
Digital communication HART
PROFIBUS PA
FOUNDATION Fieldbus
Hazardous area approvals ATEX, FM, CSA, IECEx, INMETRO, NEPSI, TIIS
Functional safety SIL
Material certificates NACE MR0103
NACE MR0175
EN10204-3.1

Areas of application
The Deltabar PMD75 differential pressure transmitter with piezoresistive sensor and welded metal diaphragm is used for the continuous measurement of liquids, steam and gases in all industries. Three-key operation enables simple and reliable commissioning and operation. The integrated HistoROM data module allows easy management of process and device parameters. Designed according to IEC 61508 for SIL2/3 safety applications.
For level, volume or mass measurement of liquids, differential pressure monitoring, and flow measurement (volume or mass flow) together with primary elements in gases, steam and liquids.
Process connection: thread
Process temperature: -40 to +85°C (-40 to +185°F)
Measuring range: 0.25mbar to 40bar (0.0036 to 600psi)
Accuracy: ±0.05%, “platinum” ±0.035% (optional)
International explosion protection certificate, overflow protection WHG, SIL, hygienic approval, marine approval

Advantages
Optimum accuracy, reproducibility and long-term stability
Certified to IEC 61508, hermetically sealed feedthrough provides the highest SIL2/3 safety
Simple menu-guided commissioning via local display, 4 to 20mA HART, PROFIBUS PA, FOUNDATION fieldbus
HistoROM data management concept for fast and easy commissioning, maintenance and diagnostics
Cost savings through the modular concept, easy replacement of sensor, display or electronics
Overload resistance up to 420bar/42MPa/6300psi, function monitored
Seamless and independent system integration (HART/PA/FF)

 

Spare Parts & Accessories 142

142 spare parts · click to collapse
Order codeDescription
52022418key housingfor external operation consists of: push buttons, cover + screwsDetails
52022419key housingfor external operation consists of: push buttons, cover + screws colour: light greyDetails
52024110key housingfor external operation consists of: push button, cover + screws colour: dark greyDetails
52020760cable glandconsists of: cable gland M20 O-ring 18.72x2.62 VMQ Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70Details
52020761cable entryconsists of: gasket 18.72x2.51 NBR adapter M20 > G1/2 O-ring 18.77x1.78 NBR Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70Details
52020762plug connectorHarting plug set Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70Details
52020763plug connectorCerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78 Deltapilot S FMB70Details
71111056Atmospheric 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
71219639Atmospheric compensation filter portConsists of: vent screw 304. Pressure compensation filter. O-ring VMQ, protection lid. Usage: housing T17, FMB70, FMD76/FMD77/FMD78, PMC71, PMD70/PMD75, PMP71/ PMP75. Housing F15 at B1,BB,BD,BF,GA,ID,I1, FMB50/FMB51/FMB52/FMB53, PMC51, PMP51/PMP55.Details
71043886CableConnection cable sensor>sep. housing. Usage: FMB50/FMB51/FMB52, FMB70, FMD76/FMD77/FMD78, PMC51, PMC71, PMD70/PMD75, PMP51/PMP55, PMP71/PMP75.Details
71043888CableConnection cable sensor>sep. housing. Usage: FMB50/FMB51/FMB52, FMB70, FMD76/FMD77/FMD78, PMC51, PMC71, PMD70/PMD75, PMP51/PMP55, PMP71/PMP75.Details
71043889CableConnection cable sensor>sep. housing. Usage: FMB50/FMB51/FMB52, FMB70, FMD76/FMD77/FMD78, PMC51, PMC71, PMD70/PMD75, PMP51/PMP55, PMP71/PMP75.Details
71070738CableConnection cable sensor>sep. housing. Usage: FMB50/FMB51/FMB52, FMB70, FMD76/FMD77/FMD78, PMC51, PMC71, PMD70/PMD75, PMP51/PMP55, PMP71/PMP75.Details
52020429Seal ring assemblyconsists of: 5x O-ring 75,87x2.62, EPDM, PTFE, FDADetails
52020432Aluminum 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 FMB70Details
52020433Aluminum cover with gasketMaterial: Aluminium, coated O-ring EPDM, FDA for EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78Details
52028309***Cover T14 316L, Ex d, sight glass, EPDMMaterial: 316L Sight glass: mineral glass O-ring EPDM, FDA individual tested, EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78Details
52028310Stainless Steel CoverMaterial: 316L O-ring EPDM, FDA individual tested, EEx d/XP Cerabar S PMC71, PMP71/PMP75 Deltabar S PMD70/PMD75,FMD76/FMD77/FMD78Details
71002774Stainless 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 FMB70Details
71002810cover 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 FMB70Details

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11 models · click to collapse
Municipal Wastewater Treatment

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

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

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

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.