Grant ecocool 100R, Руководство по эксплуатации

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ecocool 100R
Operating Manual Page 20
www.grantinstruments.com
5.2.9 Selecting cooling mode
The refrigeration cooling mode is set to energy saving ECO mode at the factory. The
user can change this setting if required:
1. Press the
F button on the heating circulator six times
– the display will show ”  ”.
2. Press the S button to select. The display will show the current mode
3. Use the main dial to select the required mode of operation.
Mode Operation

Cooling permanently off

Energy saving eco mode

Cooling permanently on maximum power
3. Press the
S button to save
Note: The cooling mode currently selected is displayed during the equipment power on
sequence.
5.2.10 Completing a calibration
The equipment allows a two-point calibration to be completed. The calibration menu can
be accessed by pressing the
F and S buttons on the heating circulator simultaneously for
about 5 seconds.
The calibration temperatures are constrained by the temperature limits of the liquid type
setting. Calibration should be carried out using a traceable reference thermometer with
an accuracy of at least 0.1°C. This thermometer should be held securely in the centre of
the bath or vessel.
The calibration of the equipment is performed by setting, a low temperature calibration
point and a high temperature calibration point. The high temperature calibration point
must be at least 40°C higher than the low temperature point.
Calibration points should be chosen to be at critical experimental temperatures where
accuracy is important or, alternatively, at the extremes of the working range of used
temperatures.
If only the low temperature calibration point is set; then the calibration will be performed
between this point and 100°C with the offset decreasingly linearly. If only the high
temperature calibration point is set; then the calibration will be performed between 0°C
and this point with the offset decreasingly linearly.
In order to achieve an accurate calibration it is important to ensure that the liquid
temperature is stable. If following calibration the temperature indicated on the heating
circulator is not in accordance with the thermometer the equipment should be reset.
Setting the low temperature offset
1. Adjust the set temperature to the required low temperature calibration point.
2. Allow the equipment to stabilise for at least 5 minutes after a stable temperature
condition has been achieved.
3. Measure the liquid temperature by placing a reference thermometer into the centre of
the bath.