The P1100+ High-Pressure Constant Flow Pump integrates several advanced technologies for superior performance in HPLC applications. Its key features include: a dual-piston, series-type reciprocating pump driven by a small cam and short-stroke mechanism, which minimizes pulsation and eliminates the need for a traditional damper, reducing system size. It employs stepper motor subdivision control for smooth and accurate low-speed operation, ensuring high precision and repeatability even at low flow rates. The pump utilizes a floating guided plunger installation method paired with high-quality plunger rods and seals, guaranteeing long-term stability and durability. Additionally, it incorporates dual correction for mobile phase compressibility and flow rate accuracy, allowing for flow error compensation within ±15% based on the solvent system, which ensures exceptional flow accuracy. The pump also supports external control via RS485 for high-precision binary high-pressure gradient formation and flow rate gradient programming, meeting diverse requirements in both production and research settings.
Flow Rate Range: 0.001 to 10.000 mL/min (increment: 0.001 mL/min)
Maximum Operating Pressure: 45 MPa (0.001-5.000 mL/min); 20 MPa (5.001-10.000 mL/min)
Power Supply: AC 220V (±10%), 50Hz
Power Consumption: 80W
Dimensions (L×W×H): 420mm×260mm×160mm
Weight: 14 kg
Communication Interface: RS485
Display: VFD vacuum fluorescent display (20×2 characters)
Pressure Units: MPa, bar, psi (selectable)
The P1100+ High-Pressure Constant Flow Pump delivers reliable and precise fluid delivery for demanding HPLC analyses. It achieves a high flow accuracy of ≤ ±0.3% and excellent flow stability with RSD ≤ 0.085% under standard test conditions (1.0 mL/min, water, room temperature). The pump maintains consistent performance with minimal pressure pulsation (≤1%) and features robust sealing, exhibiting a pressure drop of no more than 1.5 MPa over 10 minutes at 40 MPa. It is capable of forming precise binary high-pressure gradients via workstation control and supports flow rate gradient programming. Built-in safety features include real-time pressure monitoring with configurable high/low-pressure limits and automatic pump shutdown with alarms. Its design ensures stable operation suitable for applications in pharmaceuticals, biochemistry, environmental monitoring, and quality control.