Tongtian TBP5020S Precision Constant-Flow Parallel Piston Pump

Overview

The Tongtian TBP5020S is a high-precision, microprocessor-controlled parallel piston constant-flow pump engineered for demanding continuous fluid delivery applications in analytical, preparative, and process-scale laboratory environments. Unlike conventional single-piston or diaphragm-based systems, the TBP5020S employs a dual-cylinder parallel piston architecture operating in phase-shifted displacement mode—effectively eliminating flow discontinuity and minimizing pressure transients. This design adheres to fundamental principles of positive displacement hydraulics, where volumetric displacement per stroke is precisely governed by plunger geometry, stroke length, and motor-driven timing resolution. The pump delivers stable, pulse-free flow across its full operational range (0.1–50.0 mL/min) at pressures up to 20.0 MPa, making it suitable for medium-to-high-pressure liquid handling tasks including preparative chromatography, continuous-flow synthesis, and corrosion-resistant reagent dosing.

Key Features

• Parallel dual-piston mechanism with real-time phase compensation ensures <0.02 MPa pressure pulsation—critical for maintaining column integrity in preparative HPLC and avoiding bubble formation in gas-sensitive reactions.
• Selectively configurable wetted-path materials: sapphire inlet/outlet check valves and ceramic plungers provide exceptional chemical resistance and wear longevity; interchangeable pump heads available in 316L stainless steel (L), commercially pure titanium (T), medical-grade PEEK (K), and chemically inert PTFE (F) to match solvent compatibility requirements per application.
• Microprocessor-based closed-loop control system with integrated pressure and flow sensors enables dynamic feedback adjustment—achieving ≤±0.5% flow setting error and ≤±0.5% repeatability under varying backpressure conditions.
• Intuitive front-panel interface with real-time digital display of setpoint and actual pressure, flow rate, elapsed time, and system status; supports both manual keypad input and remote RS232/USB communication for integration into automated workflows.
• Programmable timer function allows pre-defined start/stop sequences and duty-cycle modulation—essential for unattended overnight operation in synthesis or purification protocols.

Sample Compatibility & Compliance

The TBP5020S accommodates a broad spectrum of solvents—including strong acids (e.g., concentrated HCl, HNO₃), organic bases (e.g., triethylamine), halogenated hydrocarbons (e.g., CH₂Cl₂, CCl₄), and aggressive fluorinated media—when configured with appropriate wetted-path materials (e.g., Ti or PTFE). Its mechanical architecture conforms to IEC 61010-1 safety standards for laboratory equipment. While not certified to ISO 13485 or FDA 21 CFR Part 11 out-of-the-box, the pump’s data logging capability (including timestamped pressure/flow records and user-accessible parameter history) supports GLP/GMP-aligned documentation practices when deployed within validated instrument platforms. It meets ASTM D3487 and USP material compatibility expectations for pharmaceutical excipient handling when operated with PEEK or PTFE fluidic paths.

Software & Data Management

The pump supports bidirectional ASCII protocol over RS232 or USB virtual COM port, enabling seamless integration with third-party control software (e.g., LabVIEW, MATLAB, or custom Python scripts via PySerial). Firmware includes non-volatile memory for storing up to 10 user-defined method profiles—including flow ramping sequences, pressure limits, and timed hold steps. All operational parameters—including current pressure reading, setpoints, runtime duration, and fault codes—are accessible via serial query commands. Optional PC-based configuration utility provides graphical trend visualization, CSV export of time-stamped pressure/flow logs, and printable audit-ready reports compliant with internal QA documentation standards.

Applications

• Preparative chromatography: As a reliable eluent delivery module in medium-pressure (≤10 MPa) flash and MPLC systems, especially where gradient stability and low pulsation are required for reproducible fraction collection.
• Continuous-flow chemical synthesis: Paired with microreactor or tubular reactor modules for precise stoichiometric feeding of corrosive or air-sensitive reagents—common in pharmaceutical intermediate development and fine chemical manufacturing.
• Corrosion-resistant metering: Used in coal liquefaction research, desulfurization catalyst testing, and dye intermediate production where titanium- or PTFE-wetted configurations prevent metal leaching and cross-contamination.
• Environmental sample introduction: Stable delivery of calibration standards or extractants in automated EPA Method 8081/8270 workflows involving persistent organic pollutants.
• Food-grade additive dosing: Validated use in pilot-scale emulsification and encapsulation trials requiring repeatable, sanitary-compliant fluid transfer without shear-induced degradation.

FAQ

What is the maximum allowable backpressure for continuous operation at 50.0 mL/min?
At full flow (50.0 mL/min), the recommended maximum continuous operating pressure is 15.0 MPa to ensure thermal stability and extended seal life. Brief excursions to 20.0 MPa are permissible under controlled conditions with adequate cooling.
Can the pump be calibrated traceably to NIST standards?
Yes—Tongtian provides optional factory calibration certificates (traceable to national metrology institutes) covering flow rate and pressure verification at three points across the operational range. Users may perform field verification using gravimetric or turbine-based flow meters meeting ISO 4064 Class B accuracy.
Is firmware upgrade supported remotely?
Firmware updates are delivered as signed binary files via Tongtian’s secure customer portal and installed via USB stick—no internet connection required during update execution.
How does the pump handle viscous fluids above 500 cP?
Viscosity >500 cP requires reduced maximum flow rate and increased priming time; performance curves for glycerol/water mixtures are provided in the technical supplement. Use of heated manifold options (optional) is recommended for sub-ambient temperature operation.
Are spare parts and service support available outside mainland China?
Global distribution partners maintain localized inventory of critical wear components (plungers, seals, valves); technical documentation and remote diagnostics support are available in English, German, and Japanese through Tongtian’s international service network.