Endress+Hauser PMD75-1QA7H11DADU Deltabar Differential Pressure Transmitter 0-3 bar

Name: Endress+Hauser PMD75 Deltabar 0-3 bar – Manual & Price Quote
Brand: Endress+Hauser (E & H)

Description

Overview

The Endress+Hauser PMD75 Deltabar is a digital differential pressure transmitter built on the proven Cerabar/Deltabar S sensor platform, and this configuration, order code PMD75-1QA7H11DADU, is factory-calibrated to a 0-3 bar differential range. This mid-range span makes the Endress+Hauser PMD75 the workhorse setting for orifice-plate flow measurement, pump discharge/suction differential monitoring, and vessel differential interlocks where the pressure swing is larger than a filter-monitoring application but still requires tight, repeatable accuracy across the full span.

Working closely with plant engineers in the region, Seven Star LLC proudly supplies the PMD75 Deltabar to refineries, utility operators, and industrial manufacturers across the Sultanate of Oman, Muscat, and the wider GCC region. Specifying the PMD75 through Seven Star LLC comes with a formal quotation, the manufacturer datasheet and technical support with selection.

Measurement Principle

The PMD75 measures differential pressure by applying the high-side and low-side process pressures across opposite faces of an internal diaphragm, which deflects in proportion to the pressure difference between the two ports. This deflection changes the capacitance of an internal measuring cell, and the transmitter’s digital electronics convert that capacitance change into a precise electrical signal representing the differential pressure, independent of absolute line pressure fluctuations, an important property in the 0-3 bar range where static line pressure can be significantly higher than the measured differential.

Because the PMD75 measures the differential directly at the sensor rather than deriving it from two separate absolute measurements, it eliminates the subtraction error that would otherwise erode accuracy at the top and bottom of the calibrated span, delivering reference accuracy of up to 0.075% of the calibrated span across the full 0-3 bar range. This direct-measurement approach also gives the PMD75 excellent long-term stability and a fast response time, both essential when the transmitter drives the square-root extraction used in orifice-plate flow computation.

Engineering Design of the Endress+Hauser PMD75

The PMD75 uses a two-chamber transmitter housing, available in aluminum or stainless steel, that physically separates the terminal compartment from the electronics compartment so that field wiring can be serviced without exposure to the measuring circuitry. The process wetted parts and diaphragm seal materials are selected at the point of order to match the process medium, and the instrument supports both direct process connection via a five-way or three-way manifold and remote-seal configurations depending on the installation.

A backlit local display with a four-key operating concept allows field engineers to configure the zero and span, apply damping, and read diagnostic information without a separate handheld communicator, while the HART-based 4-20mA output integrates directly with existing control loops. The PMD75 is designed to IEC 61508 and can be applied in SIL2/SIL3 safety instrumented functions, an important consideration for differential pressure loops tied to pump protection and vessel-level interlocks.

Key Features

The Endress+Hauser PMD75 combines mid-range differential accuracy with rugged industrial construction. Core capabilities include:

Factory-calibrated 0-3 bar differential pressure range suited to orifice-plate flow and pump differential duties.
Reference accuracy of up to 0.075% of calibrated span maintained across the full measuring range.
Direct differential measurement that avoids the subtraction error inherent in dual absolute-pressure setups.
Two-chamber aluminum or stainless steel housing isolating wiring from sensitive electronics.
Local backlit display with four-key configuration for on-site zero, span, and damping adjustment.
SIL2/SIL3-capable design per IEC 61508 for use in pump protection and vessel interlock systems.
HART-compatible 4-20mA output for seamless integration with existing DCS and PLC platforms.
Compatible with three-way and five-way manifolds for straightforward impulse line installation.

Industrial Applications

The 0-3 bar span of this Endress+Hauser PMD75 configuration is widely specified for orifice-plate and venturi flow measurement on process water, cooling water, and utility air systems throughout Oman’s industrial and desalination facilities, where the differential signal is extracted to a square-root flow output for custody transfer and process control. Pump manufacturers and skid builders across the GCC also rely on this mid-range Endress+Hauser PMD75 for continuous pump discharge-to-suction differential monitoring, protecting rotating equipment from cavitation and dry-run conditions.

With fast quotation turnaround and technical support, Seven Star LLC distributes the Deltabar PMD75 to EPC contractors and plant operators throughout the Sohar and Salalah economic zones, supporting vessel differential-level interlocks, dP-based flow totalization, and pump protection schemes. Facility engineers across the region rely on Seven Star LLC for both the initial specification of the correct calibrated range and the long-term parts and calibration support that follows commissioning.

Technical Specifications

Full technical parameters for the Endress+Hauser PMD75 differential pressure transmitter, order code PMD75-1QA7H11DADU, are summarized below to help engineers confirm the Endress+Hauser PMD75 matches their process requirements before submitting a purchase order:

Parameter	Specification
Model	Endress+Hauser PMD75 Deltabar
Order Code	PMD75-1QA7H11DADU
Measuring Principle	Capacitive Differential Pressure
Calibrated Range	0 to 3 bar
Accuracy	Up to 0.075% of calibrated span
Output Signal	4-20mA / HART
Housing	Two-chamber, aluminum or stainless steel
Safety Rating	SIL2/SIL3 capable per IEC 61508
Display	Local backlit display, 4-key operation

Request a Quote for Endress+Hauser PMD75-1QA7H11DADU Deltabar Differential Pressure Transmitter 0-3 bar

To submit a formal Request for Quote (RFQ), confirm current availability and lead time, or obtain the complete technical datasheet for the Endress+Hauser PMD75-1QA7H11DADU Deltabar differential pressure transmitter, please contact the instrumentation division at Seven Star LLC today. With engineering support in Muscat, our engineers are ready to support specification and sourcing for your differential pressure measurement project.

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About brand

Level, flow and pressure measurement account for most of the Endress+Hauser instruments engineers ask us about, and each device is defined by the order code on its nameplate. Endress+Hauser, founded in 1953 and based in Reinach, Switzerland, builds process instrumentation for liquids, gases and bulk solids. Seven Star LLC is an independent supplier listing Endress+Hauser (E+H) flowmeters, radar and vibronic level instruments, pressure and temperature transmitters and liquid analysis equipment for plants in Oman and the GCC.

Endress+Hauser product families on this page

Level is the largest group: Micropilot free-space radar (FMR10B, FMR62 and the FMR67 for bulk solids, all 80 GHz), Levelflex guided radar (FMP50, and the FMP55 for interface measurement), the Liquiphant FTL51 vibronic point level switch and the Prosonic S FMU90 ultrasonic transmitter. Flow covers Proline Promag electromagnetic flowmeters (Promag P 300, Promag W 400) and the Prowirl F 200 vortex meter. Pressure is represented by the Cerabar PMP51B, temperature by the iTEMP TMT82 HART transmitter. For liquid analysis the listing has the Liquiline CM444 multiparameter transmitter and Memosens sensors such as the CPS11E pH electrode.

Where Endress+Hauser instruments are used

Water and wastewater plants rely on Promag W meters, radar level and Liquiline analysis. Oil and gas, chemical and power plants specify Levelflex and Micropilot on tanks and separators, Prowirl on steam and gas, and Cerabar on process lines. Food and pharmaceutical producers use hygienic versions of the same families, and cement and mining sites use the FMR67 on silos.

Ordering Endress+Hauser instruments: what we need

Send the order code and, for a replacement, the serial number from the nameplate. The extended order code is better still, because it spells out every option. Without a code we need the medium, pressure and temperature, measuring span, process connection, wetted materials, output signal or fieldbus, power supply, display and the hazardous area approval required. For flowmeters add line size and liner, for radar the tank height and nozzle size.

Frequently Asked Questions

Why choose the 0-3 bar range for the PMD75 Deltabar?

The 0-3 bar span suits mid-range applications such as orifice-plate flow measurement and pump discharge differential monitoring, where the pressure swing is larger than a low-range filter-monitoring duty but still needs tight accuracy across the full span.

Does the PMD75 support square-root flow extraction for orifice metering?

Yes. The PMD75 can output a linearized square-root signal derived from the measured differential pressure, allowing direct integration with flow computers and DCS totalizers used for orifice-plate flow measurement.

What manifold options are compatible with the PMD75?

The PMD75 is compatible with standard three-way and five-way manifolds, simplifying impulse line installation, zero verification, and instrument isolation for maintenance without draining the process line.

Can the PMD75 integrate with legacy 4-20mA control systems?

Yes. The PMD75 outputs a standard 4-20mA/HART signal, allowing it to integrate directly into existing analog loops as well as digital HART-based asset management systems without additional hardware.

Is Seven Star LLC an experienced supply partner for Endress+Hauser products?

Yes. Seven Star LLC is an experienced supplier of Endress+Hauser in Oman and the GCC, supplying genuine, factory-calibrated instruments with full local warranty and technical support.

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