Sanotac GK0530 High-Pressure Constant Flow Pump with MODBUS ASCII/RTU and PLC Interface
| Brand | Sanotac |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | GK0530 |
| Flow Rate | 0.01–50.00 mL/min (increment: 0.01 mL/min) |
| Maximum Pressure | 30 MPa |
| Flow Accuracy | ±0.5% |
| Flow Precision (RSD) | ≤0.1% |
| Pressure Pulsation | ≤0.2 MPa |
| Pump Head Material | 316L Stainless Steel, Sapphire, PTFE, Ceramic |
| Tubing Connection | 1/16" Standard Fitting |
| Display | 256×64 Dot Matrix Backlit LCD |
| Control Modes | Front Panel Keypad + RS-232/RS-485 Serial Interface (MODBUS ASCII/RTU) + 0–5 V / 0–10 V Analog Voltage & 4–20 mA Current Signals for PLC Integration |
| Power Supply | 85–264 VAC, 50 Hz |
| Dimensions | 370 × 240 × 152 mm |
Overview
The Sanotac GK0530 High-Pressure Constant Flow Pump is an industrial-grade, microprocessor-controlled dual-piston parallel pump engineered for precise, pulse-free liquid delivery under sustained high-pressure conditions up to 30 MPa. Designed specifically for integration into automated chemical process systems—including continuous flow reactors, microreactors, catalytic evaluation rigs, and high-pressure synthesis platforms—the GK0530 employs a floating plunger architecture and cam-profiled mechanical drive to minimize seal wear and ensure long-term operational stability. Its fluidic path is constructed from chemically inert, pressure-rated materials including 316L stainless steel, sapphire check valves, PTFE seals, and ceramic components—enabling compatibility with aggressive solvents, corrosive reagents, and high-temperature process streams. Unlike conventional peristaltic or single-piston designs, the GK0530 delivers true constant-flow performance across its full dynamic range (0.01–50.00 mL/min), with solvent compressibility compensation and multi-point flow calibration algorithms embedded in firmware to maintain accuracy regardless of viscosity or backpressure fluctuations.
Key Features
- Dual parallel piston design with floating plunger mechanism—reduces radial load on seals and extends service life beyond 10,000 hours under continuous operation.
- Integrated MODBUS ASCII/RTU protocol support over RS-232/RS-485 serial interface—enables seamless bidirectional communication with PLCs, SCADA systems, and distributed control units without proprietary drivers.
- Analog I/O compatibility: 0–5 V, 0–10 V voltage inputs and 4–20 mA current loop outputs allow direct integration into legacy industrial automation environments requiring analog setpoint modulation.
- Low-pressure pulsation (<0.2 MPa) achieved via cam curve optimization and real-time electronic flow pulse suppression—critical for sensitive downstream detection (e.g., inline UV/Vis, FTIR, or mass spectrometry).
- Onboard programmable memory stores up to 10 user-defined methods with independent flow rate, gradient profile, and pressure limit parameters—accessible via intuitive keypad navigation and backlit 256×64 LCD display.
- Open communication protocol architecture—full command set documentation provided for custom workstation development; compatible with LabVIEW, Python (PySerial), MATLAB, and third-party chromatography data systems.
Sample Compatibility & Compliance
The GK0530 accommodates a broad spectrum of process fluids—from aqueous buffers and organic solvents (acetonitrile, THF, DMF) to supercritical CO₂-compatible media and high-viscosity polymer solutions—thanks to its chemically resistant wetted path and thermal-stable actuation system. It meets mechanical safety requirements per ISO 12100:2012 (risk assessment and risk reduction) and conforms to electromagnetic compatibility standards EN 61326-1:2013 (industrial environment). While not certified for explosive atmospheres, optional ATEX-compliant variants are available upon request. For regulated applications in pharmaceutical process development or QC labs, the pump supports audit-trail-capable operation when paired with compliant software platforms adhering to FDA 21 CFR Part 11 and EU Annex 11 requirements.
Software & Data Management
The GK0530 operates natively in standalone mode but is fully interoperable with external control software through its open MODBUS register map and ASCII command syntax. All flow, pressure, and status variables—including real-time flow deviation, motor temperature, and valve cycle count—are accessible as discrete holding registers (4x series) or input registers (3x series). Data logging at configurable intervals (100 ms to 10 s) can be implemented via external DAQ systems or custom scripts. When deployed in GLP/GMP environments, users may implement electronic signature workflows using validated middleware that records operator ID, timestamp, method version, and parameter change history—ensuring full traceability in accordance with ALCOA+ principles.
Applications
- Continuous-flow synthesis in microchannel reactors and plate-type heat exchangers.
- Catalyst screening and kinetic studies in high-pressure fixed-bed or slurry-phase reactors.
- Feed delivery for preparative and analytical HPLC systems where gradient reproducibility and low pulsation are essential.
- Liquid-phase hydrogenation, hydroformylation, and carbonylation processes requiring precise stoichiometric control.
- Process analytical technology (PAT) integration for real-time feedstock dosing in API manufacturing.
- Geochemical simulation (e.g., enhanced oil recovery modeling) and coal liquefaction research.
- High-pressure extraction and fractionation in natural product isolation workflows.
FAQ
Does the GK0530 support gradient elution programming?
Yes—the pump includes onboard gradient generation capability with programmable linear, stepwise, and custom-shaped profiles. Gradient composition is controlled via dual-pump synchronization or internal solvent proportioning logic when used with compatible solvent selection valves.
Can it be operated without a computer?
Absolutely—the front-panel interface supports complete local operation including flow rate setting, pressure limit adjustment, method recall, and manual start/stop functions.
What is the maximum allowable inlet pressure?
The pump is designed for ambient-pressure inlet conditions (0.1–0.3 MPa typical); upstream pressurization beyond 0.5 MPa requires consultation with Sanotac engineering to assess cavitation risk and prime stability.
Is firmware upgrade supported in-field?
Yes—firmware updates are delivered as binary files and installed via serial interface using the provided utility; no hardware modification is required.
Are replacement parts such as plungers and seals available separately?
All critical wear components—including 316L plungers, sapphire check valves, PTFE seals, and ceramic pump heads—are stocked and sold as OEM spare kits with full dimensional and material certification.
