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Tovatech LLC
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  3. Tovatech LLC
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  5. Model 5000 - HPLC Liquid Flow Meter

Model 5000 -HPLC Liquid Flow Meter

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We are very excited about our newly designed flow meter for HPLC. These liquid flow meters have improved performance and a dramatic reduction in size and weight – one third the size and weight of the previous models! The FlowCal 5000 digital liquid flowmeter accurately and reliably determines liquid flow. It is designed primarily as a flow meter for HPLC systems used at the end of a flow system where measured liquid is collected. Our latest liquid flow meter has the following improvements:

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  • New PEEK valve which is fitted with a soft elastomer seal and teflon diaphragm.
  • The newly designed sensor head is more stable.
  • The user replaceable inlet pipe - is made with a 1/16 inch diameter PEEK tube.
  • New modern looking and light weight brushed aluminum case – the total unit now weighs only 12 ounces.
  • Easy Calibration & validation

The new instrument measures liquid flow over a wide range, from 50µl/min to 25ml/min. You can see the working flow ranges and accuracy in the table below. Flow rate is measured by volume and is independent of the liquid type up to a viscosity of 10 centipoise.

The unit uses a single chip micro-controller, the flow rate (rounded to four digits) is displayed on a large four digit back-lit Liquid Crystal Display (LCD) and data can be conveniently output via the built-in RS232 interface to the full 6-digit reading. No user calibration is required; the unit is generally supplied gravimetrically calibrated at 1.0 (+10%) ml/min. Calibration at multiple points is available. All wetted parts are made of PTFE , PEEK, DAI-EL PERFLOUR or Pyrex glass. There are no wetted metallic parts.

  • The ideal instrument for IQ OQ PQ and troubleshooting
  • Accurate to 1% of reading with guaranteed linearity from 0.05 to 25.00 ml/min
  • Durable and easy to use with any HPLC pump
  • Easy diagnosis of leaking piston seals or malfunctioning check valves
  • Automatic Data Transfer
    • Dramatically simplify liquid flow rate data collection for HPLC IQ OQ PQ
    • Collect flow rate data via RS232 or with a new optional battery powered mini printer

Three modes of operation are available:

  • Printer Mode: liquid flow readings are displayed on the LCD and output to a printer if one is connected. A running average option is available in this mode
  • Terminal Mode: in this mode the liquid flowmeter is controlled by the terminal or PC. Extra commands for averaging any number of readings are included.
  • Test Mode: this mode allows the user to test the display, valve and RS232 interface and also display the calibration date.