Working Principle:
The fixed threaded thermocouple operates based on the Seebeck effect, in which a voltage (thermoelectric EMF) is generated when two dissimilar metals are joined at one end and exposed to a temperature difference. This voltage is proportional to the temperature and can be measured and interpreted by instrumentation to determine the process temperature.
The threaded connection ensures the thermocouple’s sensing tip is in direct contact with the target medium for fast and accurate temperature sensing.
Construction & Materials:
- Sheath Material:
- Stainless Steel (304, 316, 310S)
- Inconel 600
- Customized alloys for high temperature or corrosive environments
- Threaded Connection Types:
- Metric: M16×1.5, M20×1.5
- Imperial: NPT1/4″, NPT1/2″, G1/2″, etc.
- Insulation Material:
- High-purity magnesium oxide (MgO), compacted for fast heat transfer and electrical insulation
- Thermocouple Types Supported:
- Type K (Nickel-Chromium/Nickel-Aluminum)
- Type J, T, E, N (based on specific application)
- Type R/S/B for higher temperature versions (rare)
- Cold End (Terminal):
- Terminal block, plug connector, or wiring leads
- Protected by aluminum or stainless steel connection heads (optional IP rating)
Applications:
- Petrochemical and Refining Plants:
Measuring process pipe and tank temperatures in corrosive or high-pressure systems. - Manufacturing and Machinery:
Embedded in heating systems, extruders, or molds for precise process control. - HVAC and Boilers:
Monitoring flue gas, exhaust, or fluid temperatures. - Power Plants and Turbines:
Used in temperature sensing for bearings, pipes, and flow systems. - Food and Pharmaceutical Equipment:
For sanitary environments (with hygienic thread options like Tri-Clamp or sanitary ferrules).
Features & Benefits:
- Rugged, Vibration-Resistant Design
The fixed threaded structure provides mechanical stability in dynamic industrial environments. - Accurate and Repeatable Measurements
Fast response time due to close contact between the probe and the medium. - Easy Installation and Replacement
Threaded design allows for straightforward mounting and quick servicing. - Customizable Probe Length and Diameter
Can be tailored to meet specific immersion depths or spatial limitations. - Long Operational Life
Durable construction reduces the need for frequent replacements.