Danfoss 060G5902 MBS 3000 Compact Pressure Transmitter (Vacuum Range)

Product Overview

The Danfoss 060G5902 (MBS 3000) is a high-performance, compact pressure transmitter specifically designed for vacuum measurement applications. With a sensing range of -1 to 0 bar (-14.5 to 0 psi), this module is a staple in industrial automation for monitoring suction systems, vacuum pumps, and specialized pneumatic circuits. Engineered to withstand the rigors of heavy-duty industrial environments, the 060G5902 utilizes a piezoresistive silicon sensing element and high-grade stainless steel construction (AISI 316L) to ensure long-term stability and resistance to corrosion. Its 4 to 20 mA analog output provides a reliable, noise-immune signal to PLCs and DCS systems, making it an essential component for precise process control in food processing, packaging, and chemical manufacturing.

Technical Configuration

The MBS 3000 series is defined by its robust mechanical design and excellent vibration stability. The 060G5902 features an EN 175301-803-A angular connector (often referred to as a DIN plug), which provides an IP65 enclosure rating, protecting the internal electronics from dust and low-pressure water jets.

Internally, the transmitter is laser-calibrated and temperature-compensated to maintain high accuracy across a broad thermal range (-40 to 85 deg C). It operates on a flexible DC supply (9 to 32 VDC), allowing it to be powered directly from standard industrial control loops. The vacuum-rated sensing diaphragm is designed to handle pressure peaks and cavitation without drift, ensuring that vacuum-sensitive processes—such as suction pick-and-place or distillation—maintain consistent performance throughout their lifecycle.

Technical Specifications

Technical FAQs

Q1: Is the 060G5902 suitable for measuring liquid vacuum?

A1: Yes. The AISI 316L stainless steel wetted parts are compatible with most non-corrosive liquids and gases. It is commonly used in pump cavitation monitoring and liquid suction lines.

Q2: How do I wire the angular connector for a 4-20 mA loop?

A2: For the standard EN 175301-803-A connector, Pin 1 is typically the Positive (+) Supply and Pin 2 is the Output Signal (Return). Always refer to the wiring diagram laser-etched on the transmitter body to verify local pinouts.

Q3: What happens if the pressure exceeds 0 bar (positive pressure)?

A3: The MBS 3000 has a defined overpressure limit (typically 2-3 times the full-scale range). While the output signal will saturate at 20 mA once 0 bar is reached, the sensor can withstand minor positive pressure transients without mechanical failure.

Engineering & Installation Guide

• Vibration and Mounting: The MBS 3000 is highly resistant to vibration, but for optimal life expectancy, mount the transmitter in a position that minimizes direct mechanical shock. When installing in high-vibration piping, consider using a capillary tube or flexible mounting bracket to decouple the sensor from the source.

• Vacuum Sealing: When installing the 060G5902, use a high-quality thread sealant (such as PTFE tape or a liquid sealant rated for vacuum) to prevent atmospheric air leakage into the system. Even a microscopic leak will cause the transmitter to show an incorrect "High" vacuum reading (closer to 0 bar).

• Thermal Protection: Although the transmitter is rated to 85 deg C, prolonged exposure to extreme temperatures can shorten the life of the internal capacitors. If the process media temperature exceeds 100 deg C, utilize a cooling pigtail (syphon) to protect the sensing diaphragm.

Engineering Advantages

The 060G5902 is distinguished by its excellent electromagnetic compatibility (EMC), meeting the stringent requirements of EU directives for industrial environments. This ensures that the 4 to 20 mA signal remains stable even when the transmitter is mounted near frequency converters or large motors. Furthermore, the compact "hex-nut" body design allows for installation in tight manifolds where traditional, bulkier transmitters would not fit. Its proven reliability in vacuum applications makes it a "fit and forget" solution for engineers looking to reduce maintenance overhead in automated production lines.