The P3500 High-Pressure Constant-Current Pump is a high-performance liquid chromatography infusion pump with the following core features:
Low-pulsation stable output: It adopts a dual-plunger series reciprocating pump structure with a small cam driving a short-stroke plunger, resulting in extremely low infusion pulsation, eliminating the need for external buffers, and achieving a more compact system structure.
Intelligent Control and High Precision: Supports step motor subdivision control for smooth low-speed operation; features dual correction functions for mobile phase compression coefficient and flow rate accuracy (±15% error compensation), ensuring extremely high flow rate accuracy and repeatability.
Gradient Analysis and Flexible Control: The system can be connected to a chromatography workstation via RS485 interface, enabling high-precision binary high-pressure gradient analysis and flow rate-time program control, meeting the analytical and preparative requirements of complex samples.
Safety and reliability: Features real-time pressure monitoring and high/low pressure limit alarms, supports display of three pressure units (MPa, bar, psi), and includes a built-in high-flow flushing function (25 mL/min) to enhance operational safety and efficiency.
Durable and easy to maintain: The floating guide plunger design, combined with high-quality plunger rods and sealing rings, ensures long-term stable operation; the modular structure facilitates routine maintenance and component replacement.
Flow rate range: 0.01 to 50.00 mL/min (step size: 0.01 mL/min)
Maximum operating pressure: 30 MPa (flow rate: 0.10 to 20.00 mL/min), 20 MPa (flow rate: 20.01 to 50.00 mL/min)
Pump sealing performance: Pressure drop ≤ 1.5 MPa after 10 minutes at 30 MPa
Communication interface: RS485
Power supply: AC 220 V (±10%), 50 Hz,
Power consumption: 200 W
Dimensions: 420 mm × 300 mm × 175 mm (length × width × height)
Weight: 12 kg
The P3500 High-Pressure Constant-Flow Pump serves as the core infusion unit in high-performance liquid chromatography (HPLC) systems, delivering mobile phase with stability and precision. It is suitable for isocratic and binary high-pressure gradient analysis. Equipped with flow rate program control and gradient mixing capabilities, it meets the separation and analysis requirements of complex samples such as peptides, proteins, and traditional Chinese medicines. This pump is widely used in pharmaceuticals, biochemistry, environmental protection, quality control, and preparative chromatography. It can also function as a high-precision feed pump, supporting diverse operations in both research and production.