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Product
WaxChy Type Hydraulic Diaphragm Metering Pump
- Product details
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Core Performance Parameters
Parameter Item Specific Index Parameter Item Specific Index Max Flow Rate 329 L/H Max Discharge Pressure 211 bar Flow Adjustment Range 30% – 100% Steady-State Accuracy ±1% Suction Lift Up to 3m water column Core Structural Features & Advantages
Part Core Advantages & Configuration Drive End Unique integrated eccentric worm gear structure (compact, precise stroke, small footprint);
Wear-resistant ball bearings for stable operation;
Oil bath lubrication to extend service life;
Flow adjustable in both stop and running states;
Manual or variable frequency control options
Hydraulic End Bypass oil replenishment design,Hydraulically driven diaphragm for longer service life;
Built-in adjustable safety valve to protect diaphragm and pump head from overpressure damage;
High-precision check valve for accurate dosing;
Multi-material pump heads available (PVC, PVDF, 316SS, Hastelloy 20, Hastelloy alloy) to suit various media;
Optional pressure-type double diaphragm leak detection (local/remote) alarm
Core Application Scenarios
Industry Application Scenarios Environmental Protection Wastewater treatment, chemical dosing Petrochemical & Refining High-pressure chemical injection, fluid transfer Power & Metallurgy Boiler water treatment, process fluid dosing Pharmaceutical & Food Precise reagent dosing, food additive metering
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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.
