Biotech Systec PC3 Preparative Pump Controller Assembly, Closed-Loop, 80 mmHg - 0001-6293 *OBSOLETE*

Biotech Systec® ZHCR® PC3 Preparative Pump Controller Assembly

Product Number: 0001-6293

• Vacuum Level (kPa/mmHg):  80 mmHg
• Vacuum Control Type:  Closed Loop
• LED Indicators:  3
• Frame Type:  L-Bracket
• Max. No. of Vacuum Chambers: 8
• Applications: Analytical Instrumentation, In Vitro Diagnostics

The Controlled Vacuum Sources combines a closed loop vacuum control PCB with a ZHCR® vacuum pump on an L-bracket to create the optimum vacuum configuration for degassing applications. Custom configurations are also available to enable simple integration into preexisting designs. Advanced status indicator lights and leak detection algorithms are included in the PCB. Closed loop controls eliminate baseline noise and maximize pump life.

The Systec ZHCR (Zero Hysteresis / Constant Run) vacuum pump is designed for membrane degassing of the HPLC mobile phase. Employing a patented closed-loop,  micro-stepping, RPM control-strategy permits the pump to run with continuously variable speed, providing quick pull-down at high RPM, and then sustaining a consistent vacuum level at low RPM.

Features

• ZHCR® Patented control eliminates baseline fluctuations
• Inert flow path
• 5+ year lifetime
• Built-in anti-backflow check valves
• Compact
• RS-232 communication is available
• LED indicator or pin headers are available for communication and signaling

Fluctuations in detector baseline due to changes in vacuum level are eliminated by not having to repeatedly stop and start a single-speed pump. This also greatly reduces wear 
and noise. The brushless motor enables quiet operation and is appropriate for environments where solvent vapors may be present. Flowpaths are entirely inert and the continuously purged head design allows the pump to start into a full vacuum – vacuum will not be released in the event of a power loss.

Vacuum Pump Technical Data

• Air Flow (no vacuum): 650 SCCM @ 400 RPM; 45 SCCM @ 60 RPM
• Vacuum Level: <40 mmHg @ 60 RPM (1 SCCM air flow) 
• Pump-down Time: <1 minute (with 4 MINI degassing channels, 50cc total internal chamber volume)
• Pump Head Continuous Purge Air Flow Rate: 1 SCCM, Primary; 9 SCCM, Secondary
• Wetted Materials: Polypropylene, PTFE, EPDM Rubber
• Noise: <52 dB (@ 50 dB ambient)
• Expected Lifetime: >5 years (continuous run @ 60 RPM)

Electrical Specifications: Stepper Motor

• Type: Uni-Polar, 1 Amp @ 4.6V DC / phase; 200 steps / rev.
• Drive: Micro-stepped, control current set to 425 mA / phase avg. current Chop Frequency: Approximately 25 kHz
• Speed: Continuously Variable. Ranges from 1 RPM to 450 PRM, depending on the deviation from vacuum setpoint in closed-loop control.
• Power Requirement: 15-24V DC: <5 watts Typical 10 watts peak
• Overcurrent Protection Device: 1.10 Amp Hold, 2.20 Amp Trip at 20 °C
• Temperature: <25 °C rise above ambient with ambient <50 °C in open air The 5 watts of heat dissipated will cause varying temperature rise in conditions other than open air. The maximum rated temperature of the pump is 75 °C