Danfoss 084Z6048 MBT 5250 Platinum Resistance Temperature Sensor

Product Overview

The 084Z6048 (084Z6046) is a heavy-duty platinum resistance temperature sensor (Pt100) engineered by Danfoss for demanding industrial and marine applications. Designed as an insertion-type probe, it excels in monitoring temperatures in cooling water, lubrication oil, and hydraulic systems where high vibration and aggressive media are constant factors. The sensor's robust stainless steel construction and IP65 enclosure rating ensure long-term stability in engine rooms, offshore rigs, and power plant environments. By providing precise thermal feedback, the 084Z6048 plays a critical role in preventing equipment overheating, optimizing fuel efficiency, and extending the service life of high-value rotating machinery.

Technical Configuration

This sensor utilizes a standardized Pt100 element, ensuring high accuracy and interchangeability across global control systems. The mechanical interface features a G 3/4 inch male process connection according to ISO 228 standards, fabricated entirely from high-grade stainless steel to resist corrosion. The internal sensing element is designed to withstand ambient temperatures up to 90 deg C (194 deg F), making it suitable for placement near heat-generating process equipment. Its modular design allows for the sensing insert to be replaced without draining the process media, significantly reducing maintenance complexity in pressurized systems.

Technical Specifications

Technical FAQs

Why does the product description list both 084Z6048 and 084Z6046?In the Danfoss catalog, these numbers often refer to the same technical assembly or specific sub-components (such as the sensor head vs. the complete unit). The 084Z6048 is the commercial ordering code for the complete insertion sensor assembly as specified.

Can this sensor be used in high-vibration environments?Yes, the MBT series from Danfoss is specifically designed for marine "Type Approval" standards. The internal wiring and sensing element are shock-mounted to withstand the constant vibrations found on large diesel engines and reciprocating compressors.

Is the sensing element replaceable without removing the housing?Depending on the specific pocket (thermowell) configuration used with this G 3/4 connection, the MBT design typically allows the internal Pt100 insert to be swapped out while the process remains sealed, minimizing system downtime.

Engineering & Installation Guide

• Seal Integrity: When installing the G 3/4 male connection, utilize a compatible copper or bonded seal washer to ensure a leak-proof interface. Over-tightening can deform the stainless steel threads; always refer to the specific torque values for ISO 228 G-type threads in hydraulic applications.

• Immersion Depth: To achieve accurate thermal readings, ensure the sensor tip is immersed at least 6 to 10 times the diameter of the protection tube into the media flow. In pipelines, the tip should ideally reach the center of the pipe to avoid "wall effect" temperature lags.

• Wiring & Signal Integrity: Since this is a Pt100 resistance-based sensor, use 3-wire or 4-wire compensated cabling to eliminate the effect of lead-wire resistance over long distances. Ensure the IP65 cable gland is tightened correctly to prevent moisture ingress from humid engine room environments.