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Product
Assembled RTD Series
- Product details
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Model: WZC, WZP
Features: 1. Compression spring type temperature sensing element with excellent vibration resistance; 2. No compensation wire required, cost-saving; 3. High measurement accuracy; 4. High mechanical strength and good pressure resistance; 5. Imported thin-film resistance element with reliable and stable performance.
Applications: General industrial temperature measurement, usually matched with display instruments, recording instruments, electronic computers, etc. Directly measure the temperature of liquid, steam, gas media and solid surfaces within -200℃ ~ 500℃ in various production processes.
Working Principle: RTD measures temperature based on the characteristic that the resistance of a substance changes with temperature. When the resistance value changes, the working instrument displays the temperature value corresponding to the resistance.
Temperature Measuring Range: -200°C ~ +500°C (varies by specific product)
Mounting Types: No fixed device, fixed thread, movable flange, fixed flange, flexible pipe joint type, fixed tapered thread type, straight pipe joint type
Junction Box Types: Spray-proof, waterproof
Temperature Sensing Element Material: Platinum, Copper
Product Type Features Applications RTD with No Fixed Device No fixed mounting structure Scenarios requiring flexible installation Fixed Thread Type RTD Threaded fixing Fixed installation on pipelines Movable Flange Type RTD Movable flange connection Scenarios requiring adjustment Fixed Flange Type RTD Flange fixing Containers and large-diameter pipelines Multi-interface Fixed Thread RTD Diverse threaded connection forms Equipment with various threaded interfaces Flexible Pipe Joint Type RTD Adjustable insertion depth Pipelines with different wall thicknesses Straight Pipe Joint Type RTD Straight pipe joint Standard pipelines
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Q
What is a thermocouple?
A
Thermocouples are the preferred solution for extreme temperature applications. They consist of two dissimilar metal wires joined at the measuring end, generating a voltage proportional to the temperature difference.
Working Principle: When two different metals are connected, the thermoelectric effect produces a voltage at the junction. This voltage increases with rising temperature, allowing measurement via reference tables.
Key Advantages:
• Temperature Range: -270°C to 2300°C (depending on type)
• Fast Response Time (typically 0.1–10 seconds)
• Robust Construction, vibration-resistant
• Relatively Low Cost
• No External Power Required
Q
What is the difference between RTD and thermocouple?
A
• RTD (Resistance Temperature Detector): Based on the principle that a metal conductor's resistance increases with temperature, it converts resistance measurements into temperature readings.
• Thermocouple: Operates on the Seebeck effect, where two dissimilar metals in contact generate a thermoelectric voltage proportional to temperature differences.
Features
• RTD: High accuracy, stable signal, excellent linearity, ideal for low to medium temperatures.
• Thermocouple: Simple structure, fast response, high-temperature resistance, wide measurement range.
Pros & Cons
• RTD Pros: High precision, strong anti-interference, reliable low-temperature performance.
Cons: Limited upper temperature range, bulkier size, slightly slower response.
• Thermocouple Pros: Broad temperature range, high-temperature tolerance, rapid response, suitable for moving/surface measurements.
Cons: Lower accuracy at low temperatures, requires cold junction compensation, weaker signal prone to interference.
