PCE Instruments PCE-COM 20 Bedienungsanleitung Seite 42

The current temperature "TA" shows the ambient temperature during the measurement (measured
by the temperature sensor).
When you have selected "TC" (underlined), press „OK" to move the cursor to the displayed number.
You can now change the number by means of the arrow keys to enter the material temperature.
Press "OK" to save the updated data and return to the main settings screen.
You can change the numbers more quickly by pressing and holding the respective arrow key.
When the temperature is moderate and no considerable fluctuations are expected, you can make
your measurement without changing the temperature settings.
This means that you enter 20 °C for "TC" (the temperature coefficient of the sample will then be
irrelevant). Make sure that the temperatures of the calibration block and of the sample material
remain the same during the measurement. After a calibration of the device, you can measure directly
without having to consider the ambient temperature and the temperature coefficient.
If the temperature of the calibration block is different from the temperature of the tested material,
you can enter the temperature of the calibration block for "TC" before the calibration. After this, you
must return to the calibration screen. Enter the temperature of the sample under "TC" for the next
measurement. Then return to the measurement screen and select the temperature coefficient a .
0
You can now start your measurements.
4. Temperature coefficient
Image 8
Eight numerical values for the temperature coefficient can be set for a sample during a
measurement. More detailed information on this setting can be found in chapter 5.4.12.
The values a and a are particularly useful as a represents the average value of the temperature
1 2 1
coefficient and a is the coefficient of copper or aluminium. These values are factory-set and
2
... a
cannot be changed but you can enter your own values for a .
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To do so, first select one of the positions by placing the cursor on it, using the arrow keys.
After confirming your selection with "OK", use the arrow keys to select a value within the range of
0.0000 ... 0.03000 and press "OK" again to confirm.
When setting this value, you can press and hold the arrow keys to increase/ decrease the number
more quickly.
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