Practical tips before commissioning your new testo 270
Dear Customer,
Congratulations on purchasing your new testo 270 cooking oil tester.
All our measuring instruments are factory tested by us before delivery and
adjusted to their own specific level of accuracy. To ensure a consistently high
level of accuracy, we recommend the instrument is regularly checked.
You have the following options with the testo 270 cooking oil tester:
1 Testo factory calibration according to ISO (accuracy +/- 2% TPM
You can order an ISO calibration from Testo's calibration subsidiary, Testo
Industrial Services in Kirchzarten, using order number 0520 0028. This
means your testo 270 will be calibrated at two points (at approx. 3% and at
approx. 24% TPM) under precise laboratory conditions.
Furthermore, you have the following options for checking your testo 270 yourself
at any time:
2 with Testo reference oil (accuracy +/- 2.5% TPM
With the Testo reference oil (order no. 0554 2650), you can check the
measuring instrument precisely and, if necessary, readjust it (please pay
attention to the description in the instruction manual for this).
3 with the simple function test in cooking oil (accuracy +/- 3% TPM
For a simple function test without adjustment, we recommend you carry out
a measurement during the commissioning of your new instrument in unused
cooking oil at 150 to 180 °C.
You should ideally carry out this measurement several times in succession
and note the respective readings. The mean value of these readings
represents your specific reference value for subsequent instrument
checking. To use the determined reference value as a comparative value for
a check, always carry out the measurement for instrument checking in
unused cooking oil at 150 to 180 °C.
Please make sure that the reference value is recalculated if the type of oil or
oil supplier changes.
Your specific reference value:
___________________________
1
):
1
):
1
):
1
typically, based on Testo in-house reference, at an ambient temperature of
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2.1. About this document
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Use
> Please read this documentation through carefully and
familiarize yourself with the product before putting it to use. Pay
particular attention to the safety instructions and warning advice
in order to prevent injuries and damage to the products.
> Keep this document to hand so that you can refer to it when
necessary.
> Hand this documentation on to any subsequent users of the
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product.
Warnings
Always pay attention to information that is marked by the following
warnings with warning pictograms. Implement the specified
precautionary measures.
Representation Explanation
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WARNING
NOTICE
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Indicates potential serious injuries
indicates circumstances that may lead to
damage to the products
5
2 Safety and the environment
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Symbols and writing standards
Represen-
Explanation
tation
Note: Basic or further information.
1. ...
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2. ...
> ... Action: a step or an optional step.
- ... Result of an action.
Action: more steps, the sequence must be followed.
Menu Elements of the instrument, the instrument displays
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or the program interface.
[OK] Control keys of the instrument or buttons of the
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The testo 270 is a handy measuring instrument for fast testing of
cooking oils.
The TPM value (total polar materials) enables a statement on the
ageing of cooking oils due to the effects of heat.
The following measuring tasks can be performed with the testo
270:
• Displaying the temperature of the cooking oil:
Indicator for correct setting of the deep fat fryer, checking of
integrated temperature displays.
• Displaying the TPM value:
Indicator for the ageing of the cooking oil.
The sensor works on a capacitive basis and determines as the
reading the total polar materials as a %.
The free fatty acids, which are determined above all for the
evaluation of unloaded oils (rancidity), cannot be detected with the
testo 270.
The temperature of the cooking oil to be measured must be
at least 40 °C. The maximum operating temperature is
200 °C.
The sensor and the probe tube are designed to come into
contact with oil used in deep fat fryers for the typical
duration of a spot check measurement. The materials used
in these components meet the relevant requirements in the