Danfoss MBS 33M 060G3126 Marine Pressure Transmitter

Danfoss MBS 33M 060G3126 Marine Pressure Transmitter (0–10 Bar / 4–20 mA)

The Danfoss MBS 33M (Part No. 060G3126) is a heavy-duty, marine-type approved pressure transmitter engineered for demanding maritime, offshore, and heavy industrial automation systems. Featuring a calibrated gauge measuring range of 0 to 10 bar (0 to 145 psi) and a standard 4–20 mA 2-wire loop-powered output, this transmitter delivers high reliability in harsh engine room environments subject to severe mechanical vibration, thermal cycling, and high electromagnetic interference (EMI/EMC).

Manufactured with an AISI 316L (1.4404) stainless steel wetted body and laser-welded piezoresistive sensing diaphragm, the MBS 33M eliminates internal elastomeric O-ring seals, ensuring fluid containment and resistance to cavitation. Fully certified by leading IACS classification societies including DNV, Lloyd’s Register (LR), ABS, Bureau Veritas (BV), and RINA, the 060G3126 is optimized for continuous duty in marine auxiliary boilers, cooling water loops, lubricating oil circuits, fuel oil booster lines, and hydraulic machinery.

Model Details

• Manufacturer: Danfoss
• Product Type: Marine Pressure Transmitter
• Type Code: MBS 33M
• Ordering Part Number (MPN): 060G3126
• Danfoss Specification Key: MBS 33M-2011-A9AB08-0 (or MBS 33M-2011-1AB08)

Key Features

1. Full Marine Classification Approvals: Factory-certified by DNV, LR, ABS, BV, RINA, NKK, PRS, and MRS for unrestricted shipboard installations.
2. Robust Stainless Steel Construction: Wetted parts and outer enclosure fabricated from marine-grade AISI 316L (1.4404) stainless steel, providing corrosion resistance in saline atmospheres.
3. Laser-Calibrated Temperature Compensation: Integrated temperature-compensated sensor core maintains high measurement accuracy (±0.3% FS typical) across operating fluid temperatures up to 85°C.
4. High Vibration & Shock Resistance: Tested to withstand 20g mechanical vibration (5–2000 Hz) and 100g shock, preventing drift or failure under severe engine vibration profiles.
5. Robust Electrical Protection: IP65-rated angular DIN plug (EN 175301-803-A) featuring reverse polarity protection, overvoltage clamping, and short-circuit immunity.

Applications

• Marine Main & Auxiliary Engine Systems: Fuel oil supply & booster pressure, jacket cooling water, and lube oil gallery monitoring.
• Shipboard Auxiliary Machinery: Starting air receivers (low-pressure stages), bilge separators, marine boiler feed water systems, and evaporator brine pressure.
• Industrial Hydraulics & Hydrostatic Drives: Hydraulic power units (HPUs), closed-circuit circulation pumps, and steering gear systems.
• Chilled Water & Marine HVAC Systems: Secondary refrigerant loop pressure, condenser cooling monitoring, and pump head pressure control.
• Offshore & Industrial Pumping Stations: Freshwater distribution, fire main booster pumps, and general chemical/water tank level-by-pressure monitoring.

Frequently Asked Questions

What is the exact pressure range and output for the Danfoss 060G3126?

The Danfoss 060G3126 transmitter operates across a calibrated gauge pressure range of 0 to 10 bar (0 to 145.04 psi) with a linear 4 to 20 mA 2-wire electrical current output.

What is the difference between Danfoss MBS 3000 and MBS 33M?

While both series share similar core sensing elements, the MBS 33M is built specifically to meet the mechanical, electrical, and environmental testing requirements of major marine classification societies (DNV, Lloyd’s, ABS, etc.). It features enhanced electromagnetic compatibility (EMC) filtering, superior shock/vibration damping (20g rating), and a 316L stainless steel enclosure designed for engine room environments.

Can the zero point or span calibration be adjusted on this model?

No. The MBS 33M 060G3126 is a hermetically sealed, factory laser-calibrated instrument designed to maintain calibration without field drift. Eliminating field-potentiometer openings prevents moisture and salt ingress into the internal electronics.

What thread sealant should be used on the G 1/2 EN 837 pressure port?

Because the G 1/2 connection is a parallel machine thread, sealing is achieved at the flat shoulder rather than the threads. Use a flat copper sealing ring, vulcanized rubber bonded washer (Dowty seal), or an aluminum compression gasket against the manifold shoulder.

What is the maximum media temperature this unit can handle?

The MBS 33M 060G3126 handles direct process fluid temperatures between -40°C and +85°C. For steam lines, thermal oil circuits, or exhaust media exceeding 85°C, install a cooling neck, impulse line, or syphon to drop the temperature before it reaches the sensor.