Labconco FreeZone Triad 7940010 Series User Manual
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Contents
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Chapter 4: Lyo-Works Operating SystemProduct Service 816-333-8811 or 1-800-522-765828Original instructions7. Calibration – Some sensors in the Freeze Dryer can be calibrated. Thisprocess should be done by a qualified technician or metrologist with referencesensors that are known with certainty. An external reference sensor must beplaced at the same measurement point (as close as physically possible) as thesensor being calibrated. The Collector and Shelf temperature sensors havetheir own reference thermocouple (type T) built into each sensor. Eachthermocouple is a pair of wires (red & blue) sheath with a brown outer casing.They are located inside the housing of the Freeze Dryer and can be accessed byremoving the back panel. A thermocouple meter can be used to read thethermocouple value as a reference value. Current Reading (uncorrected) – This gives the raw sensor readingwith no offset applied to the reading. Offset – This is the value that will be added to the Current Reading(uncorrected) to give the proper adjusted reading that matches thereference sensor being used for calibration. The adjusted reading(uncorrected + Offset) is the value that will be presented on all screensoutside of the Sensor Calibration screen. Pressing the Offset field ofthe desired sensor will bring up a dialog box for entering the offsetvalue for the selected sensor.Sample |
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