Acmer BT-100U Precision Peristaltic Pump
| Brand | Acmer |
|---|---|
| Model | BT-100U |
| Pump Type | Peristaltic Pump |
| Flow Rate Range | 0.00013–560 mL/min |
| Maximum Speed | 150 rpm |
| Compatible Pump Heads | YZ1513, YZ2513S, BZ, DG, DMD1513 |
| Control Interfaces | Keypad, Foot Switch, Analog Voltage Input (0–5 V / 0–10 V), RS485 (Modbus RTU) |
| Display | Real-time Speed, Direction, and Operational Status |
| Direction Control | Bidirectional (Forward/Reverse) |
| Speed Limit Setting | User-configurable maximum rpm via keypad |
| Keypad Lock | Password-free key combination lock to prevent accidental parameter changes |
| Optional Leak Detection | External sensor integration with configurable response logic (e.g., stop pump, alarm, log event) |
Overview
The Acmer BT-100U Precision Peristaltic Pump is an engineered solution for accurate, contamination-free fluid handling in analytical laboratories, bioprocessing workflows, and automated sampling systems. Operating on the principle of peristalsis—where rollers compress a flexible tubing segment against a curved housing—the BT-100U delivers pulseless, low-shear flow without exposing the fluid path to valves, seals, or wetted metal components. This design ensures full fluid isolation, eliminating cross-contamination risks and simplifying cleaning validation. Its wide dynamic flow range (0.00013–560 mL/min) supports applications from ultra-low-volume reagent dosing in HPLC autosamplers to high-throughput media transfer in cell culture bioreactors. The pump’s modular architecture accommodates interchangeable pump heads—including YZ1513, YZ2513S, BZ, DG, and DMD1513—enabling rapid adaptation to varying tubing diameters (ID 0.1–6.4 mm), pressure requirements (up to 2 bar continuous), and chemical compatibility needs.
Key Features
- Multi-mode speed control: Local keypad operation, foot-switch activation, analog voltage input (0–5 V or 0–10 V), and industrial-grade RS485 serial communication (Modbus RTU protocol) allow seamless integration into PLC-controlled environments or custom software platforms.
- Bidirectional operation with programmable direction logic: Instant reversal enables precise backflushing, calibration loop priming, and bidirectional titration protocols without mechanical reconfiguration.
- User-defined speed limiting: Maximum rotational speed can be set and locked via front-panel keypad, enforcing operational safety boundaries during routine use or operator training scenarios.
- Real-time operational display: Integrated LCD shows current rpm, rotation direction (CW/CCW), run/pause status, and system error codes—supporting immediate troubleshooting without external diagnostics tools.
- Keypad lock function: A hardware-based key combination disables all front-panel inputs, preventing unintended parameter modification during unattended operation or shared-lab deployment.
- Leak detection readiness: Optional external leak sensor interface allows connection to conductive or optical drip detectors; configurable response actions (e.g., pump halt, relay output assertion, event logging) comply with IEC 61508 functional safety concepts when integrated into larger process control systems.
Sample Compatibility & Compliance
The BT-100U maintains compatibility with a broad spectrum of elastomeric tubing materials—including silicone, Viton®, Tygon® LFL, PharMed® BPT, and C-Flex®—ensuring suitability for aqueous buffers, organic solvents, acids, bases, and shear-sensitive biological fluids. While the pump itself is not certified to ISO 13485 or FDA 21 CFR Part 11, its control architecture supports audit-trail-capable implementations when paired with validated host software. The RS485 Modbus interface facilitates traceable command logging, and the analog input channel enables closed-loop flow regulation when used with external flow meters (e.g., Coriolis or ultrasonic sensors). For GLP/GMP environments, users may implement procedural controls—including SOPs for tubing replacement intervals, torque verification of roller assemblies, and periodic linearity checks using gravimetric calibration methods aligned with ASTM D3417 or ISO 8504-2 guidelines.
Software & Data Management
No proprietary software is bundled with the BT-100U; instead, it relies on open-protocol interoperability. The Modbus RTU implementation over RS485 permits direct integration with LabVIEW, Python (via PyModbus), MATLAB, or SCADA systems such as Ignition or Siemens WinCC. All register mappings—including target speed, direction flag, start/stop commands, and real-time feedback values—are documented in the device’s technical manual. For regulated environments requiring electronic records, the pump’s deterministic response time (<50 ms command-to-motion latency) and non-volatile speed limit storage support 21 CFR Part 11-compliant data acquisition when hosted on validated computing infrastructure with appropriate user access controls and change management procedures.
Applications
- Automated liquid handling in environmental testing labs (e.g., sequential extraction of soil leachates per EPA Method 1311)
- Continuous feeding of nutrient media in microbial fermentation monitoring systems
- Low-flow solvent delivery in preparative chromatography fraction collectors
- Calibration standard delivery in ion chromatography conductivity detectors
- Controlled reagent injection in online water quality analyzers (e.g., COD, TOC, nitrate sensors)
- Perfusion culture systems requiring stable, low-pulsation flow across multi-day experiments
FAQ
What tubing sizes are supported by the BT-100U?
The pump accommodates tubing inner diameters from 0.1 mm to 6.4 mm, depending on the installed pump head (e.g., YZ1513 supports ID 0.1–2.4 mm; YZ2513S supports ID 0.5–6.4 mm). Tubing selection must consider pressure rating, chemical resistance, and required flow accuracy.
Does the pump support flow rate calibration?
Yes—while the BT-100U controls speed, not volumetric flow directly, users can establish flow-rate vs. rpm curves for specific tubing and fluid combinations using gravimetric or volumetric calibration methods. These curves may be embedded in host software for closed-loop flow control.
Is RS485 communication optically isolated?
The standard RS485 interface includes transient voltage suppression but does not feature galvanic isolation. For electrically noisy industrial settings, an external isolated RS485 repeater is recommended.
Can multiple BT-100U units be synchronized?
Yes—using Modbus RTU in master-slave configuration or external timing signals via analog input, up to 32 units can be coordinated for parallel pumping or phased delivery sequences.
What maintenance is required for long-term accuracy?
Roller compression force should be verified quarterly using a calibrated torque wrench; tubing must be replaced per manufacturer-recommended service life (typically 100–500 hours depending on material and speed); and roller surfaces should be inspected for wear or debris accumulation before critical runs.
