PreFluid SL360-TH35 High-Capacity Peristaltic Pump

Overview

The PreFluid SL360-TH35 is a high-capacity, industrial-grade peristaltic pump engineered for continuous, reliable transfer of demanding fluids in laboratory and process environments. Based on the positive displacement principle of peristalsis—where rollers compress elastomeric tubing to generate flow—the SL360-TH35 delivers consistent, pulse-free volumetric transport without fluid contact with mechanical components. Its core architecture integrates an AC servo motor with high-torque output, low thermal drift, and closed-loop speed regulation, paired with the newly developed TH35 planetary gear pump head. This combination ensures exceptional mechanical stability, long-term repeatability, and compatibility with thick-walled, chemically resistant tubing (up to Ø16 mm ID), enabling sustained operation at elevated backpressures—critical for applications such as catalyst injection into distillation columns up to 15 m height. Designed for uninterrupted 24/7 operation, the SL360-TH35 meets functional safety expectations for continuous-process industries including petrochemical refining, fine chemical synthesis, and bulk reagent dosing.

Key Features

• AC servo motor drive with real-time torque compensation, eliminating need for routine maintenance or brush replacement
• TH35 precision-engineered pump head featuring hardened steel rollers, optimized roller trajectory, and adjustable occlusion for extended tubing life (up to 3–4 months under typical high-viscosity duty cycles)
• Backlit LCD interface with dual-language (English/Chinese) menu navigation, real-time display of speed (rpm), calculated flow rate (L/min), and elapsed runtime
• Dual operational modes: continuous flow mode for bulk transfer; volumetric dispensing mode with programmable volume, pause intervals, and repeat cycles (±0.5% accuracy verified per ISO 8599:2022 calibration guidelines)
• RS-485 communication port compliant with Modbus RTU protocol—supports integration into SCADA, DCS, or PLC-based control systems for remote speed adjustment, direction reversal, start/stop commands, and status polling
• External TTL-level trigger input and pulse-width configurable start/stop interface for synchronized operation with analytical instruments or process valves
• Non-volatile memory storing up to 16 complete configuration profiles—including speed, direction, mode, and timer settings—for rapid recall and process reproducibility
• IP54-rated enclosure with corrosion-resistant coated chassis, facilitating cleaning in regulated environments (e.g., ISO Class 8 cleanrooms or GMP-compliant pilot plants)
• Power-fail recovery function: automatically resumes last active configuration upon re-energization
• Adjustable audible feedback: user-selectable keypress tones and alarm beeps, configurable via front-panel menu

Sample Compatibility & Compliance

The SL360-TH35 accommodates a wide range of tubing materials—including silicone, Viton®, EPDM, and Norprene®—with inner diameters from 3.2 mm to 16 mm, supporting viscosities up to 50,000 cP and differential pressures exceeding 3 bar (43.5 psi) depending on tube wall thickness and pump head compression setting. It complies with IEC 61000-6-2 (EMC immunity) and IEC 61000-6-4 (EMC emissions) standards. While not certified for hazardous locations, its robust construction and sealed electronics make it suitable for use in Class 1, Division 2 (C1D2) adjacent zones when installed per NEC Article 500. The pump supports GLP/GMP-aligned workflows through audit-trail-capable external controllers; when integrated with validated Modbus-enabled SCADA systems, it satisfies traceability requirements under FDA 21 CFR Part 11 for electronic records and signatures.

Software & Data Management

No proprietary PC software is bundled; however, the SL360-TH35 is fully compatible with industry-standard Modbus RTU master applications (e.g., Ignition SCADA, LabVIEW Modbus I/O, Python pymodbus). All operational parameters—including target speed, direction, run time, dispense volume, and fault logs—are accessible via standard function codes (0x03, 0x06, 0x10). Real-time flow calculation uses factory-calibrated tubing ID and rotational speed data, referenced against gravimetric validation curves traceable to NIST-traceable flow standards. Parameter sets can be exported/imported as CSV files using external HMI or custom scripts, enabling version-controlled configuration management across multi-unit deployments.

Applications

• Continuous catalyst dosing into high-head distillation towers (e.g., 15 m vertical lift in refinery FCC units)
• High-viscosity polymer solution transfer in coating and adhesive manufacturing
• Batch-to-batch reagent addition in API synthesis where tubing change frequency must be minimized
• Recirculation of abrasive slurries in mineral processing pilot lines
• Controlled feed of pH-adjusting agents in large-volume bioreactor systems
• Automated sampling loops interfaced with ICP-OES or HPLC autosamplers requiring precise volume metering

FAQ

What tubing sizes are supported by the TH35 pump head?
The TH35 head accepts tubing with inner diameters from 3.2 mm to 16 mm, including standard peristaltic tubing families such as Masterflex L/S, PharMed BPT, and Cole-Parmer Chem-Dura.
Can the SL360-TH35 operate under vacuum or negative inlet pressure?
Yes—it is rated for suction lift up to 5 m water column (0.5 bar abs) when used with appropriate tubing and primed inlet lines.
Is the pump compatible with corrosive solvents like chlorinated hydrocarbons or strong acids?
Compatibility depends on tubing selection; Viton® or EPDM tubing provides resistance to many aggressive chemicals—always consult chemical compatibility charts prior to use.
Does the unit include flow calibration certification?
Factory calibration certificates (per ISO/IEC 17025-accredited procedures) are available upon request at additional cost; in-house recalibration is supported via built-in zero-point and span adjustment routines.
How is overload or dry-run protection implemented?
The AC servo driver monitors current draw and thermal rise; sustained overcurrent or temperature >85 °C triggers automatic shutdown with error code display and latching fault until manual reset.