English
简体中文
Deutsch
Español
Product
Differential Pressure Gauge
- Product details
-
Instrument Principle:
Uses two bellows of equal stiffness. Equal pressure keeps the pointer at zero. Different pressures create unbalanced force and displacement, driving the transmission to show differential pressure.
Application Scope:
Used in chemical, chemical fiber, metallurgical, power, nuclear power, etc., to measure differential pressure and flow of liquid/gas media.
Main Technical Parameters:
Accuracy: 2.5%, 1.6%
Measuring range: 0~0.1…2.5 MPa; 0~1…60 KPa
Connection: Radial M20×1.5 or custom
Temperature: Ambient -20~60°C, medium <60°C
Marking: High pressure “H”, low pressure “L”
Please contact us for detailed specifications, models and catalog selection. We will provide customized selection services！
related products
Diaphragm pressure gauge with isolated d...
Stainless Steel Pressure Gauge
Stainless steel pressure gauge with SUS3...
311 Series Submersible Hydrostatic Level Transmitter
311 Series Submersible Hydrostatic Level...
401 Series Pressure Transmitter
401 Series Industrial Pressure Transmitt...
Product Inquiry
Please leave your message, we will contact you quickly after receiving it, thank you for your support!
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.
