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PrimeCartridge™ fibre wire

PrimeCartridge™ special wire for PrimeCup™ and part of the PrimeLab™ three-in-one device

  • The consumable fibre is supplied in 100m lengths on a plastic drum, the PrimeCartridgeTM, which is easy to fit and completely disposable after use.

Measurement Accuracy and Reproducibility:

  • Each PrimeCartridgeTM  is pre-calibrated against IPTS B68 thermocouple calibration at ±0.5°C at 980°C and is supplied with a calibration certificate. Providing there is no interruption by Al2O3 feeding, an accuracy and reproducibility of ±1°C can be expected PrimeCartridge™

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Description

temperature reading

PrimeCup™ elements for fast temperature reading in 7 seconds!

We have extended our fibre-optic technology to online liquidus temperature, superheat and bath chemistry measurements. PrimeLab™ provides three unique modes of measurement, bath chemistry, bath superheat or bath temperature in one complete measurement system designed specifically for use in liquid cryolite aluminium smelting applications.

temperature measurements

 

This new  instrument for rapid bath temperature measurements, superheat and chemical bath analysis in electrolyte has extended its fibre-optic technology to online liquidus temperature, superheat and bath chemistry measurements. PrimeLab™ provides three unique modes of measurement, bath chemistry, bath superheat or bath temperature in one complete measurement system designed specifically for use in liquid cryolite aluminium smelting applications.

 

 

PrimeLab™ Measurement Principle.

The intensity of light travelling through an optical fibre from a light source such as a molten bath is filtered over a specific wavelength and converted to a temperature value (assuming black body conditions) according to Planck’s Law as shown in the graph above.

How PrimeLab™ works

  1. A measurement is started by plugging a PrimeCup™ sensor onto the lance. Once dipped into the cryolite bath, the fibre detects heat and 5cm fibre is fed automatically to the thermal centre of the PrimeCup™.
  2. After 20 seconds the bath temperature plateau is detected and signalled by the instrument. The lance is removed from the bath together with a small sample of cryolite bath which begins to cool. The lance is carefully placed in a horizontal position and the sample is left to cool through the cryolite solid phases.
  3. After approximately 2.5 minutes the measurement ends and bath temperature, liquidus temperature, superheat, %AlF3  and calculated/estimated Al2O3 concentration are displayed on the instrument. At the end of the measurement the Prime Cup™ is removed and the used fibre is manually broken off at the probe holder tip. Assuming a good correlation with the XRD lab, an accuracy within ± 1% can be expected with standard deviation 0.5%.

PrimeLab™  Features

  • Unique three-mode operation
  • CHEMISTRY analysis for bath temperature, %AlF3, liquidus, superheat, Al2O3  estimation
  • SUPERHEAT for rapid bath temperature, liquidus and superheat
  • TEMPERATURE for fast bath temperature (PrimeLance™)
  • Robust, industrial housing designed to operate in strong magnetic environments, suitable for portable use on a trolley or electric car.
  • LCD screen to display bath temperature, liquidus, results of the chemical analysis, pot number and operational information
  • Automatic wire feed mechanism
  • Count-down’ indicator of how many measurements remaining on the PrimeCartridge™
  • Data downloading via USB output to a memory stick or via Wi-Fi using Windows
  • 24VDC battery housed within the PrimeLabTM  box – low battery charge indication included
  • Robust lance and carrier cable included
  • Quick release probe holder for chemistry and superheat mode plus separate probe holder for only temperature measurements
  • Trolley available as an optional extra

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