3 Specifications
8
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3 Specifications
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3.1. Use
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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
Regulation (EC)1935/2004.
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3.2. Technical data
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Feature Values
Measuring range
Temperature: 40.0 to 200.0 °C /
104.0 to 392.0°F
TPM: 0 to 40%
Accuracy Temperature: ± 1.5 °C
TPM
2
: ±2% (40.0 to 190.0 °C / 104 to 374 °F)
2
typical, referred to internal reference, at an ambient temperature of 25 °C.
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