Differential pressure flow measurement

Simple products
Easy to select, install and operate

Technical excellence

Simplicity

What is FLEX?

Standard products
Reliable, robust and low-maintenance

Technical excellence

Simplicity

What is FLEX?

High-end products
Highly functional and convenient

Technical excellence

Simplicity

What is FLEX?

Specialized products
Designed for demanding applications

Technical excellence

Simplicity

Variable

What is FLEX?

FLEX selections	Technical excellence	Simplicity
F L E X Fundamental selection Meet your basic measurement needs	Technical excellence	Simplicity
F L E X Lean selection Handle your core processes easily	Technical excellence	Simplicity
F L E X Extended selection Optimize your processes with innovative technologies	Technical excellence	Simplicity
F L E X Xpert selection Master your most challenging applications	Technical excellence	Simplicity Variable

Learn more about the FLEX selections

Compare

Deltabar PMD75B - differential pressure transmitter

Smart pressure transmitter which detects process anomalies like plugged impulse lines

Accuracy Standard:
up to 0.05 %
Platinum:
up to 0.035 %

Max. measurement error Standard:
up to 0.05 %
Platinum:
up to 0.035 %

Measuring range 10 mbar...250 bar
(0.15 psi...3750 psi)

Process temperature -40°C...+110°C
(-40°F...+230°F)

Pressure measuring range 10 mbar...250 bar
(0.15 psi...3750 psi)

Main wetted parts 316L, AlloyC,
Tantal, Monel,
Gold

Max. process pressure 420 bar (6300 psi)

Material process membrane 316L, AlloyC,
Tantal,
Monel,
Gold

Wetted materials 316L,
AlloyC,
Tantal,
Monel,
Gold

Measuring cell 10 mbar...250 bar
(0.15 psi...3750 psi)

Deltabar FMD71 - Electronic differential pressure

Compare

Electronic differential pressure Deltabar FMD71

Electronic differential pressure system utilizing two ceramic sensor modules and one transmitter

Accuracy 0.075% of individual sensor,
"PLATINUM" 0.05% of individual sensor

Process temperature –25...+150°C
(–13...+302°F)

Pressure measuring range 100mbar...40bar
(1.5psi...600psi)

Process pressure / max. overpressure limit 60 bar (900 psi)

Material process membrane Ceramic
316L, AlloyC

Measuring cell 100 mbar...40 bar
(1.5 psi...600 psi)

Deltabar FMD72 - Electronic differential pressure

Compare

Electronic differential pressure Deltabar FMD72

Electronic differential pressure system utilizing two metal sensor modules and one transmitter

Accuracy 0.075% of individual sensor,
"PLATINUM" 0.05% of individual sensor

Process temperature –40...+125°C
(–40 ... +257°F)

Pressure measuring range 400 mbar...10 bar
(6 psi...150 psi)

Process pressure / max. overpressure limit 160 bar (2400 psi)

Main wetted parts 316L, Alloy C

Material process membrane 316L, AlloyC,

Measuring cell 400 mbar...10 bar
(6 psi...150psi)

Compare

Differential pressure Deltabar PMD55

Differential pressure transmitter with metal sensor for measurement of pressure differences

Accuracy 0,1%
"PLATINUM" 0,075%

Process temperature -40 °C...85 °C
(-40 °F...185 °F)

Pressure measuring range 10mbar...40bar
(0.15...580psi)

Main wetted parts 316L

Material process membrane 316L, AlloyC,

Measuring cell 10 mbar...40 bar
(0.15...580 psi)

Deltabar PMD55B - differential pressure transmitter

Compare

Deltabar PMD55B - differential pressure transmitter

Smart transmitter with metal membrane for differential pressure monitoring in liquids and gases

Accuracy Standard:
up to 0.075 %
Platinum:
up to 0.055 %

Measuring range 30 mbar...40 bar
(0.45 psi...600 psi)

Process temperature -40°C...+110°C (-40°F...+230°F)

Medium temperature range -40°C...+110°C
(-40°F...+230°F)

Pressure measuring range 30 mbar.... 40 bar (0.45 psi... 600 psi)

Main wetted parts 316L, AlloyC

Material process membrane 316L, AlloyC

Wetted materials 316L, Alloy

Measuring cell 30 mbar...40 bar
(0.45 psi...600 psi)

Compare

Differential pressure Deltabar PMD75

Differential pressure transmitter with metal sensor for measurement of pressure differences

Accuracy Standard: 0.05%
Platinum: up to 0.035%

Process temperature -40 °C...85 °C
(-40 °F...185 °F)

Pressure measuring range 10 mbar...250 bar
(0.15 psi...3750 psi)

Main wetted parts Alloy C276
316L
Monel
Tantalum

Material process membrane 316L, AlloyC,
Tantal,
Gold-Rhodium

Measuring cell 10 mbar...250 bar
(0.15 psi...3750 psi)

Compare

Differential pressure Deltabar FMD77

Differential pressure transmitter with one diaphragm seal for level measurement

Accuracy 0,075% + influence of diaphragm seal

Process temperature -40°C...400°C
(-40°F...752°F)

Pressure measuring range 100mbar...16bar
(1.5psi...230 psi)

Process pressure / max. overpressure limit 160bar (2400 psi)

Main wetted parts Alloy C276
316L
Monel
Tantalum

Max. measurement distance 160m (525ft) H2O

Material process membrane 316L, AlloyC,
Tantal,
Gold-Rhodium,
PTFE

Measuring cell 100 mbar...16 bar
(40 inH20...240 psi)

Compare

Differential pressure Deltabar FMD78

Differential pressure transmitter with two diaphragm seals for differential pressure and level

Accuracy 0,075% + influence of diaphragm seal

Process temperature -40°C...400°C
(-40°F...752°F)

Pressure measuring range 100mbar...40bar
(1.5psi ... 600 psi)

Process pressure / max. overpressure limit 160bar (2400 psi)

Main wetted parts Alloy C276
316L
Monel
Tantalum

Max. measurement distance 400m (1312ft) H2O

Material process membrane 316L, AlloyC,
Tantal,
Gold-Rhodium
PTFE

Measuring cell 100 mbar...40 bar
(40 inH2O...600 psi)

New

Not available

Compare

Deltabar PMD50 - differential pressure transmitter

Not available

Transmitter with metal membrane for measuring differential pressure, level and flow in liquids and gases

Material process membrane 316L, AlloyC, Gold

Measuring cell 100 mbar...40 bar
(1.45 psi...580 psi)

Compare

Deltabar PMD78B - differential pressure transmitter

Minimizes ambient and process temperature effects on your measurement thanks to the TempC membrane

Accuracy Standard:
up to 0.1 %

Process temperature -40°C...+400°C
(-40°F...+752°F)

Pressure measuring range 100 mbar...40 bar
(1.5psi...600 psi)

Main wetted parts 316L, AlloyC,
Tantal, Monel
PTFE, Gold

Material process membrane 316L, AlloyC,
Tantal,
Monel
PTFE
Gold

Measuring cell 100 mbar...40 bar
(1.5 psi...600 psi)

Application-specific product selection

Use our product finder to search for the right measuring devices, software or system components to fit your needs. The Applicator helps you to make an individual product selection according to your area of application.

Go to product finder Go to Applicator

About differential pressure flow measurement

Proven use in a wide range of applications across industries: Differential pressure transmitters offer the possibility of continuous flow measurement in conjunction with differential pressure transmitters in gases, vapors and liquids. These transmitters are suitable for all types of media, both in standard applications and applications with high process pressures and temperatures.

Measuring principle

Flow measurement is used to determine the quantity that flows through a pipe system per unit of time. The measurement of flow by means of differential pressure is carried out using differential pressure transducers. Differential pressure transducers include orifices, pitot tubes or Venturi tubes. When installed in the pipe, they generate a differential pressure which is measured using the differential pressure transmitter. The flow rate is calculated in the differential pressure transmitter from this measured value.

Benefits

Universal differential pressure transmitters for flow, level and filter applications
Pre-assembled pressure-tested valve blocks

Differential pressure flow measurement

Application-specific product selection

About differential pressure flow measurement

Measuring principle

Benefits

We value your privacy