Calibration - Grant GD100 Instructions D'utilisation

3.6.

Calibration

Calibration should be carried out using a traceable reference thermometer with an
accuracy of at least 0.1°C.
Calibration procedure for GD120.
The calibration of the GD120 is in two parts, low temperature and high temperature.
Part one.
Liquid temperature of the bath must be below 20°C, recommended temperature of
5°C.
Place the unit on a bath, turn on and set unit to 5°C. (This is the recommended
1
temperature anything from 0° to 20°C can be used.)
Allow the unit to stabilise for at least 5 minutes after a stable temperature
2
condition has been achieved.
Measure the liquid temperature by placing a traceable reference thermometer with
3
an accuracy of at least 0.1°C into the bath.
Press F and S simultaneously for approximately 5 seconds or until  is
4
displayed.
5
Press S and temperature will be displayed.
Turn „Navigator‟ knob so that the average temperature (over a period of 15 seconds)
6
of the display equals the temperature on the external thermometer.
Press S and display shows 
7
8 Press F and display shows temperature
Part two
Liquid temperature of the bath must be above 70°C, recommended temperature of
70°C.
Place the unit on a bath, turn on and set unit to 70°C. (This is the recommended
1
temperature anything from 70° to 90°C can be used.)
Allow the unit to stabilise for at least 5 minutes after a stable temperature condition
2
has been achieved.
Measure the liquid temperature by placing a traceable reference thermometer with
3
an accuracy of at least 0.1°C into the bath.
4 Press F and S simultaneously for approximately 5 seconds or until LCAL is
displayed.
The display should read 
5
Rotate „Navigator‟ knob until display shows 
6
Press S and temperature will be displayed.
7
Turn „Navigator‟ knob so that the average temperature (over a period of 15 seconds)
8
of the display equals the temperature on the external thermometer.
Press S and display shows temperature
9
That completes the calibration procedure. Fig 4 shows the menu structure.
17090 Version 15 - June 2009 83S
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GD100, GD120
Operating Manual