CoMetro CP-M Series Constant Flow Pump
| Brand | CoMetro |
|---|---|
| Model | CP-M |
| Flow Rate | 10 mL/min |
| Maximum Pressure | 6000 psi |
| Accuracy | ±2% |
| Precision (RSD) | 0.2% |
| Dimensions | 175(H) × 225(W) × 305(D) mm |
| Weight | 11 kg |
| Power Supply | 230 V / 115 V, 50 / 60 Hz |
| Fluid Path Materials | PEEK or 316 Stainless Steel |
| Control Interface | Keypad and RS232 digital communication |
| Pressure Sensing | Non-contact electronic transducer |
Overview
The CoMetro CP-M Series Constant Flow Pump is an engineered solution for precision liquid delivery in demanding laboratory and process environments. Based on positive displacement peristaltic-free architecture, the CP-M employs a dual-piston reciprocating drive system with electronically compensated flow regulation—eliminating pulsation through low-volume accumulator design and rapid-fill valve dynamics. This architecture ensures true constant flow under variable backpressure conditions up to 6000 psi (414 bar), making it suitable for high-pressure liquid chromatography (HPLC), catalytic reaction systems, microfluidic dosing, and continuous-flow synthesis applications. Unlike conventional peristaltic or diaphragm pumps, the CP-M utilizes non-contact pressure sensing and closed-loop motor control to dynamically adjust stroke timing and volume compensation—delivering stable volumetric output independent of fluid viscosity, compressibility, or system impedance changes.
Key Features
- True pulseless flow delivery via low internal-volume accumulator and fast-response fill-valve mechanism
- Electronic compensation system synchronized with brushless DC motor control for real-time flow correction
- Non-contact pressure transduction enabling continuous monitoring without mechanical wear or seal degradation
- Modular pump head suspension design minimizing vibration transmission and enhancing long-term mechanical stability
- Dual-material fluid path options: chemically inert PEEK for aggressive solvents or biocompatible 316 stainless steel for high-purity and high-pressure applications
- Integrated bypass valve and self-cleaning module supporting automated maintenance cycles and extended service intervals
- Flexible operation modes: local keypad control, analog voltage/frequency input (0–5 V / 0–10 kHz), or full RS232 serial command protocol compliant with SCPI standards
Sample Compatibility & Compliance
The CP-M Series accommodates a broad range of liquids—including aqueous buffers, organic solvents, corrosive reagents, and viscous polymer solutions—without compromising flow integrity. All wetted components meet USP Class VI and ISO 10993-5 biocompatibility requirements when configured with PEEK. Stainless steel variants comply with ASTM A276 and EN 10088-3 for corrosion resistance. The pump’s architecture supports GLP/GMP workflows through configurable audit trail logging (when paired with host software), traceable parameter settings, and deterministic response to emergency stop or pressure-limit triggers. While not certified for medical device use, its design principles align with FDA 21 CFR Part 11 data integrity expectations for electronic records and signatures when deployed in regulated R&D environments.
Software & Data Management
The CP-M Series supports bidirectional RS232 communication using ASCII-based command syntax compatible with LabVIEW, MATLAB, Python (pySerial), and custom SCADA integrations. Host software can query real-time flow rate, actual pressure, operational status, and alarm conditions—including over-pressure, under-pressure, motor stall, and valve timeout events. Firmware allows user-defined pressure limit thresholds (high/low), programmable ramp profiles, and scheduled purge sequences. Data export is supported in CSV format with timestamped metadata. Optional OEM SDK provides API-level access for integration into LIMS or ELN platforms, facilitating automated method execution and result archiving per ALCOA+ principles.
Applications
- HPLC and preparative chromatography requiring stable gradient elution at elevated backpressures
- Continuous-flow reactor feeding with precise stoichiometric control in pharmaceutical process development
- In vitro diagnostic (IVD) fluidics where pulse-free delivery minimizes shear-induced protein denaturation
- Materials science research involving nanoparticle dispersion, sol-gel infusion, or ceramic slurry metering
- Academic teaching labs demonstrating fluid mechanics principles, pump calibration, and feedback control theory
- Environmental testing systems for controlled leaching or column breakthrough studies under static or dynamic load
FAQ
What is the maximum operating pressure for the CP-M210 model?
The CP-M210 is rated for continuous operation up to 6000 psi (414 bar) with 316 stainless steel fluid path.
Does the pump support remote start/stop and flow adjustment via analog signal?
Yes—0–5 V DC or 0–10 kHz frequency input enables fully proportional flow control and digital state triggering.
Can the CP-M be used with aggressive solvents such as THF or concentrated acids?
When equipped with PEEK fluid path components, the pump is compatible with most common organic solvents and dilute mineral acids; compatibility with specific formulations should be verified using CoMetro’s chemical resistance chart.
Is pressure readback available on all models?
Pressure display and feedback are standard on CP-M3xx series models; CP-M2xx variants provide flow-only output unless upgraded with optional pressure sensor module.
What maintenance intervals are recommended for routine operation?
Under typical lab conditions (8 hrs/day, aqueous buffers), valve and seal inspection is recommended every 6 months; accumulator calibration verification every 12 months per ISO/IEC 17025 guidelines.
