Tongtian TBP2H10S Dual-Piston Constant Flow Pump

Overview

The Tongtian TBP2H10S Dual-Piston Constant Flow Pump is a precision-engineered mid-pressure liquid delivery system designed for continuous, stable, and repeatable fluid transfer in laboratory and pilot-scale applications. Built upon dual-piston positive displacement architecture, it operates on the principle of synchronized reciprocating motion with active pulse dampening—enabling high-fidelity flow control under variable backpressure conditions up to 10.0 MPa. Unlike conventional single-piston or peristaltic pumps, the TBP2H10S eliminates reliance on elastic tubing or diaphragm fatigue, delivering superior long-term stability and solvent compatibility across aggressive organic, aqueous, and corrosive media. Its microprocessor-based control system ensures real-time pressure and flow regulation, making it suitable as a primary pumping module in HPLC preparative systems, reaction feeding setups, membrane filtration trials, and continuous-flow synthesis platforms.

Key Features

• Dual-piston architecture with sapphire ball check valves and ceramic plungers—ensuring >10⁶ cycle lifetime and minimal wear-induced drift
• Modular wetted-path construction: selectable pump head materials include ASTM A240 316L stainless steel (for general-purpose use) or Grade 2 commercially pure titanium (for halogenated solvents, strong acids, or saline environments)
• Low-pressure pulsation design (≤0.05 MPa) achieved via optimized cam profile, dual-phase piston timing, and integrated passive damping chambers
• RS232 serial interface compliant with standard SCPI command syntax—enabling bidirectional communication with LabVIEW, Python-based automation scripts, or third-party chromatography data systems
• Onboard overpressure protection with configurable threshold (0.5–10.0 MPa) and automatic shutdown with audible/visual alert
• Tool-free access to internal modules—including valve assemblies and plunger seals—permitting maintenance without system depressurization or disassembly of fluid manifolds
• Integrated air-bleed mechanism with calibrated venting needle valve—effectively removing entrained gas from inlet streams prior to metering
• Large-bore flow path options (2 mm, 3 mm, and 6 mm ID tubing compatibility) mitigate clogging risks common in analytical-scale HPLC pumps, supporting particulate-laden or viscous feedstocks

Sample Compatibility & Compliance

The TBP2H10S maintains chemical inertness across a broad solvent spectrum, including acetonitrile, methanol, THF, chloroform, concentrated HCl (up to 37%), NaOH (up to 1 M), and hydrogen peroxide solutions (≤30%). Its wetted material selection conforms to ISO 15190:2020 requirements for laboratory equipment safety and corrosion resistance. While not certified for GMP manufacturing environments, the pump supports GLP-aligned workflows through audit-trail-capable parameter logging (via external software), user-accessible calibration records, and deterministic flow/pressure traceability. It meets IEC 61000-6-3 (EMC emission) and IEC 61000-6-2 (immunity) standards for laboratory instrumentation.

Software & Data Management

The embedded firmware provides local real-time monitoring of actual pressure, setpoint pressure, current flow rate, and elapsed runtime. Through the RS232 interface, users may deploy Tongtian’s optional PC-based control suite—or implement custom drivers—to execute programmable sequences: ramped flow profiles, timed start/stop cycles, multi-step gradient delivery, and event-triggered pressure hold modes. All operational parameters—including flow calibration offsets, pressure limits, and memory-stored presets—are retained after power cycling. Exportable CSV logs capture timestamped pressure and flow values at user-defined intervals (100 ms to 10 s resolution), facilitating post-run analysis in MATLAB, Origin, or Excel. The system supports FDA 21 CFR Part 11–compliant electronic signatures when integrated with validated third-party LIMS or ELN platforms.

Applications

• Preparative liquid chromatography (prep-LC) and simulated moving bed (SMB) systems requiring stable flow at 5–10 MPa
• Continuous-flow reactor feeding for pharmaceutical intermediate synthesis, where stoichiometric accuracy and residence time control are critical
• High-pressure membrane filtration testing (e.g., nanofiltration, reverse osmosis) with variable permeate resistance
• Calibration and validation of flow meters, pressure transducers, and inline sensors in metrology laboratories
• Environmental sample extraction workflows involving EPA Method 3550C (Soxhlet-assisted extraction) and ASTM D7087 (diesel fuel oxidation stability)
• Material science studies involving polymer solution rheology, nanoparticle dispersion delivery, or catalyst slurry injection

FAQ

What is the maximum allowable viscosity for stable operation?
The TBP2H10S is rated for Newtonian liquids up to 200 mPa·s at 25°C; higher viscosities require reduced flow rates and elevated inlet pressure to maintain prime.
Can the pump be operated in parallel mode for higher flow output?
No—this model is configured for single-channel operation only; parallelization requires external manifold integration and independent pressure balancing, not supported natively.
Is firmware upgrade capability available?
Yes—field-upgradable via RS232 using Tongtian-provided HEX files and documented bootloader protocol; version history and release notes are published on the official support portal.
Does the pump support analog input for external flow setpoint modulation?
No—only digital RS232 command control is implemented; 0–5 V or 4–20 mA analog interfaces are not included in this variant.
What maintenance intervals are recommended for routine operation?
Sapphire valves and ceramic plungers require inspection every 500 hours of cumulative runtime; seal replacement is advised every 1,000 hours under continuous 10 MPa operation.