Precision Metering Pump Module

The Precision Metering Pump Module is a component-level unit designed for use within a Continuous Flow Chemical Synthesis System. Its primary function is to accurately and consistently meter precise volumes of liquid reagents into the continuous flow stream, ensuring controlled reaction stoichiometry, repeatability, and process stability. The module delivers fluids at defined flow rates with high accuracy, making it suitable for applications where precise reagent addition is critical.

The module operates on a positive displacement principle, typically employing a syringe, diaphragm, or peristaltic pump mechanism. A precision stepper or servo motor drives the mechanism, and a control system regulates the motor based on set flow rate parameters. This translates rotational or linear motion into precise volumetric displacement of fluid from a reservoir into the main flow path.

Key parameters include a flow rate range of 0.1–100 mL/min (adjustable via stroke length and frequency), accuracy of ±0.5% of setpoint under steady conditions, and repeatability of ±0.25% under constant operating conditions. The operating pressure range is 1.0–1.6 MPa, with a maximum differential pressure of 0.8 MPa. Operating temperature ranges from -10 to 80 °C, and ambient humidity should be ≤85% RH (non-condensing). Power supply is 24 V DC (±10%), with optional 110/230 V AC adapter, and power consumption is ≤15 W at max stroke and frequency. Ingress protection is rated IP54–IP65 (per IEC 60529), and weight ranges from 2.5 to 3.5 kg depending on configuration.

Wetted materials include Stainless Steel (316L), PTFE (Teflon), Ceramic, Sapphire, and FKM/Viton Elastomer, with PTFE and 316L listed as standard options (per ASTM A240). Other materials are available on request.

For proper selection, users must verify model-specific values, including flow rate, pressure, temperature, and material compatibility, with the legal manufacturer or supplier. The module is not a standalone product but a component intended for integration into a larger system. Verification questions should address the specific chemical compatibility, required flow accuracy, and environmental conditions of the intended application. Maintenance signals include deviations in flow rate accuracy, unusual noise, or leakage, which may indicate wear or seal failure. Failure boundaries include operation outside the specified pressure, temperature, or differential pressure limits, which could cause cavitation.

The module uses a positive displacement mechanism, such as a syringe, diaphragm, or peristaltic pump, driven by a precision stepper or servo motor. A control system regulates the motor based on set flow rate parameters, translating rotational or linear motion into precise volumetric displacement of fluid from a reservoir into the main flow path. This ensures accurate and consistent reagent delivery.