PTB600-MAN-V10.4 PTB 600 Instruction Manual
15
Before any calibration follow the general recommendation:
Starting the calibration only at ambient temperature: thermal shock can break the sensitive element of the
probe and cause harm to operator.
To fit the equaliser block inside the oven: reference to paragraph 5.1.4.
Put the probe to check into the equaliser block: reference to chapter 3 (fig 1-3).
Push on the main switch (2) and waiting for the end of autotest procedure.
Set the required temperature value on the set point following the instructions below:
Press the
key to increment the set point value.
Press the
key to decrement the set point value.
Press the E key to confirm
Wait for the stabilisation of the oven before starting any calibration (symbol ÷ on the first line of the
display).
To working at different temperatures set the set point at the new value and wait for the stabilisation.
When the set point is changed, the temperature read on the display and that measured in the block may
not proceed at the same speed; this is because there are differences between the sensors used and the
position of the same inside the block.
The temperature indicated by display must not be considered as a reference temperature but only as a
general indication of the temperature inside the block.
We suggest to insert a primary standard in the block; compare the measure with the values indicated by
the standard.
Don't ever use the primary standard: it's possible to calibrate the instrument to more significant points,
comparing the displayed temperature with the temperature of the primary standard.
ATTENTION:
At the end of the calibration DO NOT remove
the probe if it is still at high temperature. Always
allow the calibrator to cool off with the probe still inserted in order to avoid thermal shock to the probe
itself and harm to people or things.
Before switch off the calibrator make sure that the temperature of the block is almost the same as
ambient temperature.
Cooling:
To reduce the oven’s temperature, change the set point and wait for the cooling.
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