Danfoss MBS 5100 Pressure Transmitter

Overview

The Danfoss MBS 5100 is a ship-approved, high-accuracy block-type pressure transmitter engineered for use across almost all marine and general industrial applications. The Danfoss MBS 5100 pairs an acid-resistant AISI 316L wetted pressure connection with fully digitally compensated electronics, delivering an accuracy of ±0.1% FS (typical) and a 4…20 mA output signal across pressure ranges spanning 0…2.5 bar up to 0…400 bar, making a single sensor family suitable for everything from low-pressure HVAC circuits to high-pressure hydraulic and fuel systems.

As the official authorized partner and exclusive regional representative for Danfoss, Seven Star LLC proudly supplies the Danfoss MBS 5100 pressure transmitter to marine engineers, HVAC contractors, and industrial maintenance teams across Oman and the wider GCC, backed by genuine Danfoss warranty coverage, calibration certificates, and locally stocked units for time-critical vessel and plant turnarounds.

Measurement Principle

The Danfoss MBS 5100 uses a robust piezoresistive sensing element mounted directly in the pressure block, with the resulting analogue signal digitally compensated for temperature and non-linearity effects before being output as a stable 4…20 mA current loop. This block-type construction places the sensing element in direct contact with the process media through the G1/4 female pressure connection, eliminating the transfer fluids or diaphragm seals that introduce lag and additional failure points in some transmitter designs, while non-linearity is held to ≤ ±0.2% FS (BFSL) across the compensated temperature range.

Because the MBS 5100 is fully digitally compensated at the point of manufacture, it requires no field adjustment of zero or span for standard applications, and its acid-resistant stainless steel wetted parts allow direct exposure to seawater, fuel, and hydraulic media without a separate isolation diaphragm. This translates into no moving parts in the pressure path, no measurable pressure drop introduced into the line, and strong resistance to the cavitation and liquid-hammer events common in marine piping systems and pump discharge lines.

Engineering Design of the Danfoss MBS 5100

The Danfoss MBS 5100 is built around a compact block-type body with a G1/4 female pressure connection sized for direct manifold mounting, and an angular DIN 175301-803-A electrical connector (Pg11) that simplifies field wiring and cable strain relief in confined engine-room and skid environments. The transmitter’s rated IP65 enclosure and −40…85°C ambient operating range make it suitable for both climate-controlled machinery spaces and exposed GCC outdoor installations subject to intense solar loading.

Overload pressure ratings of up to twice the nominal span, combined with excellent vibration stability and high EMC/EMI protection, allow the MBS 5100 to be mounted directly on engines, compressors, and pump skids where mechanical shock and electrical noise would degrade a less-robust transmitter. The sensor is UL approved and carries a range of marine classification-society approvals, giving specifiers confidence for both newbuild and retrofit marine instrumentation projects as well as onshore industrial installations that value the same proven, rugged design.

Beyond its marine classification pedigree, the Danfoss MBS 5100 is independently certified by an unusually broad span of classification societies, including Det Norske Veritas (DNV), Lloyd’s Register (LR), the American Bureau of Shipping (ABS), Bureau Veritas (BV), RINA, Nippon Kaiji Kyokai (NKK), the Korean Register (KR), and China Classification Society (CCS), giving specifiers on multinational newbuild and retrofit projects a single transmitter model that satisfies whichever society is surveying the vessel. Electrical termination is available with an EN 175301-803-A angular plug in M20, Pg9, or Pg11 thread options, or without a mating plug where the customer supplies its own cable gland, and the transmitter’s short-circuit-protected 4…20 mA output is powered from a 9…32 VDC supply with reverse-polarity protection built in. Response time is under 4 ms for liquid media below 100 cSt viscosity and under 35 ms for gases, and the sensing element is rated for more than 10 million pressure cycles with a calculated mean time to dangerous failure exceeding 100 years, underscoring the transmitter’s suitability for continuous, unattended service in machinery spaces.

The transmitter is tested to sinusoidal vibration of 15.9 mm peak-to-peak (5–25 Hz) and 20g (25 Hz–2 kHz), random vibration of 7.5 grms, mechanical shock of 500g/1ms, and a 1 metre free-fall drop — levels reflecting sustained engine-room vibration and occasional handling impact. Static overload reaches six times nominal span (max 1500 bar) and burst pressure six times span (max 2000 bar); EMC performance is certified to EN 61000-6-3/6-2, with an ATEX Zone 2 variant available under EN 60079-0/-7 for classified areas such as tank farms.

Key Features

The Danfoss MBS 5100 pressure transmitter delivers marine-grade reliability that translates directly into value for Oman’s industrial, HVAC, and port-facility markets.

• Acid-resistant AISI 316L wetted parts withstand seawater, fuel, and hydraulic media without a separate diaphragm seal.
• Accuracy of ±0.1% FS typical (≤0.3% FS max) suits demanding process-control applications.
• Fully digitally compensated electronics eliminate the need for field zero/span adjustment.
• 4…20 mA two-wire output integrates directly into existing analogue instrumentation loops.
• Pressure ranges from 0…2.5 bar to 0…400 bar cover HVAC, hydraulic, and high-pressure fuel systems.
• Excellent vibration stability and high EMC/EMI protection suit engine-mounted and skid installations.
• Ship approvals from major classification societies support marine newbuild and retrofit projects.
• IP65-rated angular DIN connector and −40…85°C rating suit exposed GCC outdoor and machinery-space duty.

Industrial Applications

The Danfoss MBS 5100 is widely specified for marine engine-room pressure monitoring, HVAC and refrigeration circuits, hydraulic power units, and compressed-air and fuel-oil systems, wherever a rugged, digitally compensated block transmitter is needed to withstand vibration, cavitation, and liquid-hammer stress. In Oman, typical installations include port and marine terminal equipment pressure monitoring, HVAC chiller-plant pressure control in commercial and hospitality developments, and hydraulic system monitoring on heavy machinery serving the Sultanate’s logistics and industrial sectors.

As the officially authorized partner for Danfoss, Seven Star LLC distributes the MBS 5100 pressure transmitter to marine operators, HVAC contractors, and industrial plants throughout Muscat, the Sohar and Salalah port and free zones, and neighboring GCC states, supporting district cooling plants, RO desalination pump skids, and hospital and hospitality-chain mechanical systems that depend on dependable, ship-grade pressure sensing.

Technical Specifications

The table below summarizes the core specifications relevant to sizing and installing the Danfoss MBS 5100 pressure transmitter.

Request a Quote for Danfoss MBS 5100 Pressure Transmitter

Seven Star LLC invites marine engineers, HVAC contractors, and industrial maintenance teams across Oman and the GCC to submit a formal RFQ for the Danfoss MBS 5100 pressure transmitter. As the authorized partner for Danfoss in Oman and the GCC, we hold regional warehouse stock for rapid dispatch, provide the full technical datasheet on request, and connect buyers directly with our instrumentation division for pressure-range selection, marine classification guidance, and installation support.

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