Tongtian TBP2H02S Precision Constant-Flow Parallel Piston Pump

Overview

The Tongtian TBP2H02S Precision Constant-Flow Parallel Piston Pump is an engineered solution for applications demanding continuous, pulse-free liquid delivery under precisely controlled pressure and flow conditions. Unlike conventional single-piston or reciprocating pumps, the TBP2H02S employs a parallel dual-piston architecture synchronized via microprocessor-based timing logic to eliminate inherent flow discontinuities. This design ensures near-zero pressure pulsation (< 0.05 MPa), enabling stable hydrodynamic environments essential for sensitive analytical workflows—including preparative chromatography, continuous-flow synthesis, and corrosion-resistant reagent dosing. The pump operates on a closed-loop feedback principle: real-time pressure transduction and flow rate monitoring allow dynamic correction of motor speed and valve actuation timing, delivering long-term stability across its full operational range (1–200.0 mL/min at up to 2.0 MPa). Its fully sealed drive train and chemically inert wetted path options make it suitable for aggressive solvents—acids, halogenated organics, strong bases—and high-purity applications where metal leaching or particulate generation must be minimized.

Key Features

• Parallel piston mechanism with phase-shifted actuation to suppress hydraulic pulsation and deliver laminar, uninterrupted flow profiles
• Selectively configurable fluidic path materials: 316L stainless steel (L), pure titanium (T), PEEK (K), and PTFE (F)—each certified for compatibility with specific chemical classes per ASTM F2136 and ISO 10993-12 guidelines
• Sapphire ball inlet/outlet valves and ceramic plunger rods ensure exceptional wear resistance and extended service life in abrasive or high-solvent environments
• Integrated high-resolution pressure transducer with ±0.10 MPa accuracy and real-time digital display of actual vs. setpoint values
• Microprocessor-controlled motor driver supporting RS-232 and USB communication protocols for integration into LabVIEW, MATLAB, or custom SCADA systems
• Onboard programmable timer with event-triggered start/stop, multi-step flow ramping, and automatic shutdown after elapsed time

Sample Compatibility & Compliance

The TBP2H02S accommodates a broad spectrum of process liquids—from aqueous buffers and organic solvents (e.g., THF, DMF, DCM) to concentrated mineral acids (e.g., HCl, HNO₃ up to 6 M) and alkaline solutions (e.g., NaOH up to 2 M), contingent upon selected wetted material configuration. All L-, T-, K-, and F-path variants comply with ISO 8536-4 for medical infusion device biocompatibility testing when used in pharmaceutical R&D settings. For GMP-regulated environments, the pump supports audit-trail-enabled operation via optional firmware upgrade (v3.2+), meeting FDA 21 CFR Part 11 requirements for electronic records and signatures. It is routinely deployed in laboratories adhering to USP Analytical Instrument Qualification and ISO/IEC 17025 calibration traceability frameworks.

Software & Data Management

The embedded control interface provides simultaneous real-time visualization of pressure (MPa), flow rate (mL/min), elapsed time, and motor load percentage. Data logging occurs at user-selectable intervals (100 ms to 5 s) and can be exported as CSV or Excel-compatible files directly via USB flash drive. Optional PC software (Tongtian PumpControl v2.4) enables remote parameter configuration, multi-pump synchronization, and automated method sequencing—including gradient elution profiles for preparative LC systems. All logged data includes timestamped metadata (system ID, operator ID, firmware version), satisfying GLP documentation requirements. No cloud connectivity or external telemetry is implemented—data remains local unless explicitly exported by the user.

Applications

• Preparative chromatography: Isocratic and gradient elution in medium-pressure (≤2 MPa) purification systems for natural products, peptides, and small-molecule APIs
• Continuous-flow chemistry: Precise stoichiometric feeding into microreactors, tube reactors, and plate-type heat exchangers for exothermic or photochemical transformations
• Corrosive reagent handling: Metered addition of HF, fuming nitric acid, or bromine solutions in etching, catalyst activation, or halogenation processes
• Environmental analysis: Automated solvent delivery in solid-phase extraction (SPE) manifolds and online sample preconcentration modules
• Food safety testing: Consistent mobile phase delivery in HPLC methods validated per AOAC 2012.01 and EN 15662:2018 standards

FAQ

What certifications does the TBP2H02S hold for use in regulated pharmaceutical labs?

It meets mechanical safety requirements per IEC 61010-1 and supports optional firmware compliant with FDA 21 CFR Part 11 for electronic records. Full GxP validation packages (IQ/OQ/PQ protocols) are available upon request.
Can the pump be integrated into a PLC-controlled industrial skid?

Yes—via isolated 4–20 mA analog input/output terminals and Modbus RTU over RS-485, enabling seamless interoperability with Siemens S7, Allen-Bradley ControlLogix, or Beckhoff TwinCAT systems.
Is maintenance required between runs when switching between incompatible solvents?

No routine flushing is mandated if compatible wetted materials are selected; however, a 5-minute solvent purge cycle is recommended when transitioning between strongly polar and nonpolar media to prevent residue crystallization in valve seats.
Does the pump support variable flow programming during a single run?

Yes—up to 99 programmable steps with independent flow, pressure, and duration parameters per step, executed without host PC intervention.
What is the maximum allowable backpressure for continuous operation at 200 mL/min?

At nominal flow (200 mL/min), the recommended maximum sustained backpressure is 1.5 MPa to ensure thermal stability and seal longevity; peak transient pressure may reach 2.0 MPa for ≤30 seconds.