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Product
401 Series Pressure Transmitter
- Product details
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Features & Applications
1. Assembled with imported high-performance chipsets, delivering world-class manufacturing technology and performance for pressure transmitters.
2. Compact, rugged and lightweight design, enabling easy installation and maintenance-free operation.
3. External continuous zero and span adjustment with wide turndown range for flexible on-site configuration.
4. Superior adaptability for all-weather operation in harsh environments and compatibility with various corrosive media.
5. Optional configurations: linear 100% pointer gauge, 3 1/2 digit LCD or LED digital display.
6. Available explosion-proof ratings: Intrinsically Safe (IS) type; Flameproof (Explosion-proof) type.
Customized model selection and detailed specification drawings are available upon request.
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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.
