Thermo Scientific Orion Versa Star Pro User Manual page 30

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Chapter 3 Meter Setup Menus
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30 Orion Versa Star Pro Meter User Manual
4. Press the  or  key to highlight Temperature Input and press the  or  key to
highlight an available ATC probe (i.e. Ch2-ATC) as the temperature source or highlight
MAN for manual temperature input.
a. This setting will determine which options are available in the Temperature Cal menu.
5. Press the measure (esc) key to return to the measurement mode or proceed to Step 4 in
the Temperature Cal menu section.
Temperature Cal
A temperature calibration can be performed for individual ATC probes or simultaneously for all
ATC probes connected to the meter. A manual temperature value can also be entered using the
Temperature Cal menu if the MAN setting is selected in the Temperature Input menu.
The meter has a relative temperature accuracy of ±0.1°C. ATC probes have varying relative
temperature accuracies, usually ±0.5°C to ±2°C. Use the temperature calibration function only
when necessary. It is recommended that two NIST-traceable thermometers be used to measure
and verify the calibration solution temperature. Since the temperature offset calculated during
the calibration is applied to all future temperature measurements, recalibrate the temperature if
a different ATC probe is used.
ATC Probe Temperature Calibration
Prepare and connect all ATC probes to be calibrated to the appropriate module inputs on the
selected channels.
1. In the measurement mode, press the setup key.
2. Press the ,,  or  key to highlight Channel 1, Channel 2, Channel 3 or Channel 4
and press the f3 (Select) key.
3. Press the  or  key to highlight Temperature and press the f3 (Select) key.
4. Press the  or  key to highlight Temperature Cal and press the  or  key to highlight
the individual ATC probe selected in the Temperature Input menu (i.e. Ch2-ATC) or All
ATC and press the f3 (Select) key.
5. Place the ATC probes into a solution with a known, stable temperature. It is recommended
that two NIST-traceable thermometers be used to measure and verify the temperature.
6. Press the f3 (Edit) key, use the numeric keypad to enter the temperature of the solution
and press the f2 (Accept) key to save the temperature value and update the offset.
7. If applicable, press the  or  key to highlight the reference temperature of the next ATC
probe and repeat steps 3 and 4 for each ATC probe connected to the meter.
8. Once all ATC probes are calibrated, press the f1 (Back) key to exit the calibration and
press the measure (esc) key to return to the measurement mode.
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