Jumo 902006 2xPt100 RTD Temperature Sensor

Overview

The Jumo 902006 2xPt100 RTD Temperature Sensor is a highly specialized industrial measurement instrument designed to deliver unparalleled accuracy and operational redundancy. In critical industrial processes where temperature fluctuations can lead to catastrophic equipment failure or compromised production quality, standard single-element sensors often pose an unacceptable risk. This advanced Jumo probe resolves this by housing two completely independent platinum resistance elements within a single robust metallic sheath, ensuring constant data availability even if one element sustains electrical damage.

Seven Star LLC operates as a specialized technical supplier, commercial vendor, and professional B2B procurement consultant, distributing this high-reliability instrumentation to petrochemical plants, power generation facilities, and heavy manufacturing lines across the Sultanate of Oman, Muscat, and the wider GCC region. By integrating this dual-element temperature probe into distributed control systems (DCS) or programmable logic controllers (PLC), plant engineers can achieve fail-safe thermal monitoring, minimizing unplanned downtime and maximizing process stability.

Measurement Principle

The operational execution of this sensor is based on the proven thermodynamic principles of Platinum Resistance Temperature Detectors (RTD). Following the strict international DIN EN 60751 standard, the internal Pt100 elements exhibit a positive temperature coefficient—meaning their electrical resistance increases linearly and predictably in direct proportion to the surrounding temperature (registering exactly 100 ohms at 0°C).

The distinct advantage of the Jumo 902006 2xPt100 RTD lies in its redundant configuration. Two separate Pt100 measuring circuits are embedded side-by-side within the probe tip. This architecture allows control systems to continuously cross-reference two independent thermal readings from the exact same physical location. If a discrepancy arises, or if one circuit fails due to severe mechanical shock or electrical transient surges, the automation system seamlessly falls back to the secondary element, preventing a complete loss of thermal telemetry and avoiding sudden emergency shutdowns.

Engineering Design of the Jumo 902006 2xPt100 RTD

The physical and metallurgical engineering of this specific model (Code: 902006/65-228-2003-1-15-500-668-000) is optimized for mechanical durability, chemical resistance and long-term measurement stability. The protection tube is manufactured from stainless steel X 6 CrNiMoTi 17 12 2, material no. 1.4571 (316Ti), a titanium-stabilised molybdenum-bearing grade that resists corrosive industrial gases, intergranular attack and high-temperature oxidation far better than plain chrome-nickel steels. The probe is built as a straight protection tube of 15 mm diameter with a nominal length (NL) of 500 mm, providing rigid mechanical support against high-velocity gas flows and vibration.

Rather than a fixed process thread, the /65 build is a push-in probe carrying a displaceable stop flange, so the insertion length (EL) can be set anywhere between 50 mm and 460 mm on site and clamped at the depth the process actually requires. This makes one part number serviceable across ducts, vessels and thermowells of differing wall thickness without re-ordering. Electrical termination is made inside a terminal head to DIN 43729, form B, with an M 24 × 1.5 cable entry; the form B head is rated for ambient temperatures up to 100 °C and gives a protected, re-wireable junction for field cabling or for mounting a head transmitter directly above the probe.

Key Features

• Dual-element 2xPt100 architecture providing complete measurement redundancy for mission-critical safety loops.
• Wide operational temperature range capable of withstanding extreme variations from -170°C up to +700°C.
• Pt100 elements to DIN EN 60751, class B, in 2-wire circuit as standard (JUMO data sheet 902006).
• Displaceable stop flange allowing the insertion length to be set anywhere from 50 mm to 460 mm on a 500 mm nominal-length tube.
• Protection tube in stainless steel X 6 CrNiMoTi 17 12 2, material no. 1.4571 (316Ti), for premium corrosion resistance and mechanical longevity.
• Terminal head to DIN 43729 form B with M 24 × 1.5 entry, providing a protected field-wiring junction and a mounting point for a head transmitter.
• Seamless integration capability with standard industrial PLCs, safety relays, and temperature transmitters.

Industrial Applications

JUMO specifies the operating medium for this /65-228 build as air, so its natural home is gas-side and atmosphere measurement rather than immersion in liquids. In the petrochemical, refining and gas-processing plants of Oman these probes are deployed in hot-air and process-gas ducting, furnace and kiln atmospheres, dryer and oven chambers, boiler and heater flue-gas paths, and the combustion-air trains feeding fired equipment, where accurate thermal tracking is required for efficiency, emissions and operational safety. Where the same measurement has to be made in water or thermal oil, the companion 902006/54-227 variant with a G 1/2 pipe screw connection is the correct selection instead.

Power generation facilities across the GCC integrate this dual-element probe into boiler exhaust stacks, air pre-heater outlets, gas-turbine inlet and exhaust ducting and hot-gas recirculation lines. Should a sensor anomaly occur, the redundant element ensures continuous operation without requiring an immediate unit trip. Sourced efficiently through the industrial procurement network of Seven Star LLC, this RTD is also heavily utilized in the pharmaceutical and food processing sectors within the Sohar and Salalah industrial zones, where strict temperature validation and automated cross-checking are critical to maintaining batch integrity and compliance.

Technical Specifications

Safety Approvals and Standards Compliance

The 902006 platform from which the Jumo 902006 2xPt100 RTD is ordered is type-tested for use with temperature control and limitation devices approved to DIN EN 14597 (formerly DIN 3440), including safety temperature limiters (STB) and safety temperature monitors (STW), in heat transfer installations built to DIN 4754. Jumo publishes allocation lists pairing each order code with the specific limiter families it has been tested against, on the basis of test reports issued by TÜV Nord and TÜV Süd. For Omani plants running thermal oil heaters, boiler plant, or furnace systems where an independent over-temperature trip is a regulatory requirement, this documented pairing between probe and limiter is what makes the safety function defensible during an audit, and Jumo notes that departures from the approved versions require fresh design approval.

Wiring Configuration and Insertion Depth

The “2003” element of the order code identifies the measuring insert as 2 × Pt100 in a 2-wire circuit to DIN EN IEC 60751, which is the standard build for this family. In a 2-wire arrangement the resistance of the connecting leads adds directly to the measured resistance and is read as a positive temperature offset, so cable runs should be kept short, conductor cross-section generous, or a head-mounted or DIN-rail transmitter fitted close to the probe. Insertion depth matters in this construction as well: the internal nickel-chromium lead wire inside the protection tube contributes a systematic error of roughly 0.73 to 0.87 ohms per 100 mm of insertion length across the working range, equivalent to approximately 1.9 to 2.8 K per 100 mm. Recording the actual insertion length at installation and applying the corresponding offset in the control system is therefore a necessary part of correct commissioning.

Approved JUMO Device Pairings

Related Variants in Data Sheet 902006

Request a Quote for Jumo 902006 2xPt100 RTD Temperature Sensor

To submit a formal Request for Quote (RFQ), check current availability and lead time, or download complete engineering datasheets for the Jumo 902006 2xPt100 RTD Temperature Sensor, please contact the industrial instrumentation division at Seven Star LLC today. Our technical application engineers in Oman are prepared to assist with exact process matching, thermowell compatibility, and rapid commercial sourcing across the GCC.

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