Endress+Hauser Deltabar PMD78B Differential Pressure Transmitter

Name: Endress+Hauser Deltabar PMD78B DP Transmitter | Seven Star
Brand: Endress+Hauser (E & H)

Description

Overview

The Endress+Hauser Deltabar PMD78B is a differential pressure transmitter from the new Deltabar generation, engineered for flange-mounted, remote-seal applications where the process connection must be isolated from the electronics through capillary-connected diaphragm seals. Combining robust construction with wireless Bluetooth commissioning, the PMD78B is well suited to differential level, interface, and flow measurement on vessels and pipelines carrying viscous, corrosive, or high-temperature media.

As a regional supplier of Endress+Hauser products, Seven Star LLC supplies the Deltabar PMD78B Differential Pressure Transmitter to refineries, petrochemical plants, and process industries across the Sultanate of Oman and the wider GCC, with manufacturer documentation and local technical support.

Measurement Principle

The Endress+Hauser Deltabar PMD78B measures differential pressure by sensing the pressure applied to two remote diaphragm seals connected to the transmitter’s measuring cell via oil-filled capillary tubing. Process pressure deforms each diaphragm, and the resulting hydraulic pressure is transmitted through the fill fluid to a precision measuring cell inside the transmitter body, which converts the differential signal into a standard 4-20 mA HART, PROFIBUS PA, or PROFINET output. Because the diaphragm seals isolate the electronics from direct process contact, the PMD78B can be applied to hot, viscous, crystallizing, or corrosive media that would otherwise damage a directly wetted sensor.

Long-term stability of 0.025% of the upper range limit per year, combined with standard accuracy of 0.1% and an optional 0.075% variant, ensures the compensated differential pressure signal remains dependable over extended service intervals. Heartbeat Technology performs on-demand diagnostic self-checks and verification without requiring process shutdown, giving maintenance teams documented confidence in continued measurement accuracy between scheduled calibrations.

Engineering Design of the Endress+Hauser Deltabar PMD78B

The PMD78B covers a pressure measuring range from 100 mbar to 40 bar (1.5 to 600 psi), with a maximum overpressure rating of 240 bar and static pressure capability up to 160 bar, supporting demanding high-pressure process conditions. Process connections are available in MNPT1/2 and G1/2 threaded formats as well as ASME and DIN flange options from NPS 2 inches to 4 inches (DN50 to DN100), while wetted diaphragm and capillary materials include 316L stainless steel, Alloy C, tantalum, Monel, PTFE, and gold-plated options to match aggressive or hygienic process fluids.

An integrated Bluetooth module and the SmartBlue smartphone app allow secure wireless configuration, commissioning, and diagnostic access even when the transmitter is mounted in a hard-to-reach or elevated location, eliminating the need to physically connect a laptop or handheld communicator. Setup wizards guide technicians through SIL-compliant commissioning and proof testing, and the device supports 4-20 mA HART, PROFIBUS PA, and PROFINET with Ethernet-APL for direct integration into modern digital plant networks.

Key Features

The Endress+Hauser Deltabar PMD78B combines remote-seal versatility with modern wireless diagnostics for demanding differential pressure applications:

Measures differential pressure from 100 mbar to 40 bar with reference accuracy up to 0.075% and long-term stability of 0.025% of URL per year.
Remote diaphragm seal design isolates the transmitter electronics from hot, viscous, corrosive, or crystallizing process media.
Process temperature rating up to 400°C and maximum overpressure rating of 240 bar suit demanding refinery and petrochemical service.
Wetted materials including 316L, Alloy C, tantalum, Monel, PTFE, and gold accommodate a wide range of aggressive process fluids.
Bluetooth wireless technology with the SmartBlue app enables secure remote configuration and diagnostics without physical access to the transmitter.
Heartbeat Technology delivers on-demand verification and anomaly detection without interrupting the process.
Supports 4-20 mA HART, PROFIBUS PA, and PROFINET with Ethernet-APL for integration into both legacy and modern digital control architectures.
FLEX-certified extended selection options allow the PMD78B to be tailored precisely to specific application and approval requirements.

Industrial Applications

The Endress+Hauser Deltabar PMD78B is widely applied on differential level and interface measurement in refinery distillation columns, petrochemical reactors, and separator vessels, as well as on flow measurement across orifice plates and Venturi tubes in hydrocarbon processing lines. Its remote-seal configuration makes it particularly valuable for hot or fouling services in district cooling energy centers, RO desalination pre-treatment trains, and heavy industrial process plants where direct-mount pressure sensors would be exposed to unsuitable process conditions.

As a supplier of Endress+Hauser products, Seven Star LLC supplies the Deltabar PMD78B to oil and gas operators, petrochemical complexes, and industrial process plants throughout Oman, including projects supported from the Sohar and Salalah economic zones, as well as broader GCC markets, with application engineering support for seal and capillary configuration.

Technical Specifications

The table below summarizes the principal specifications of the Endress+Hauser Deltabar PMD78B Differential Pressure Transmitter, confirming why the Endress+Hauser Deltabar PMD78B is specified on demanding remote-seal duties.

Parameter	Specification
Model	Endress+Hauser Deltabar PMD78B
Measuring Range	100 mbar to 40 bar (1.5 to 600 psi)
Reference Accuracy	Up to 0.1% standard; 0.075% optional
Long-Term Stability	0.025% of URL per year
Process Temperature	-40°C to +400°C (-40°F to +752°F)
Maximum Overpressure	240 bar (3600 psi)
Process Connections	MNPT1/2, G1/2; flange NPS 2-4 in / DN50-100
Wetted Materials	316L, Alloy C, Tantalum, Monel, PTFE, Gold
Output / Protocols	4-20 mA HART, PROFIBUS PA, PROFINET with Ethernet-APL
Wireless Configuration	Bluetooth with SmartBlue app

Request a Quote for Endress+Hauser Deltabar PMD78B

Seven Star LLC invites refineries, petrochemical plants, and process industries across Oman and the GCC to submit a formal request for quotation for the Endress+Hauser Deltabar PMD78B Differential Pressure Transmitter. Contact Seven Star LLC for a quotation and current lead time for the Endress+Hauser Deltabar PMD78B. In Oman and the GCC, Seven Star LLC supplies common configurations on request, provides the manufacturer technical datasheet on request, and connects customers directly with our instrumentation division for seal and capillary sizing support. Contact Seven Star LLC today to receive a competitive quotation with current lead time and local technical support.

Browse the full Endress+Hauser (E & H) range or see more Pressure Instrumentation products supplied by Seven Star LLC in Oman and the GCC.

Datasheets & Documents

datasheet Endress+Hauser Deltabar PMD78B Datasheet Download

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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

What is the benefit of remote diaphragm seals on the Deltabar PMD78B?

Remote diaphragm seals isolate the transmitter's electronics and measuring cell from direct contact with hot, viscous, corrosive, or crystallizing process media, extending service life on demanding applications like distillation columns and reactors.

Can the PMD78B be commissioned wirelessly?

Yes. The PMD78B includes an integrated Bluetooth module compatible with the SmartBlue app, allowing secure wireless configuration and diagnostics without connecting a laptop or handheld communicator.

What process connections and materials are available?

The PMD78B is available with MNPT1/2 or G1/2 threaded connections and ASME or DIN flange options from NPS 2 to 4 inches, with wetted materials including 316L, Alloy C, tantalum, Monel, PTFE, and gold.

Does the PMD78B support legacy 4-20 mA loop integration?

Yes. In addition to PROFIBUS PA and PROFINET with Ethernet-APL, the PMD78B outputs a standard 4-20 mA HART signal, allowing straightforward integration into existing analog control loops.

Is Seven Star LLC a trusted supplier for Endress+Hauser products?

Yes, Seven Star LLC is the trusted supplier and regional supplier for Endress+Hauser in Oman and the GCC, supplying genuine factory-warrantied instruments with local calibration and technical support.

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