TESTO 270 User manual

testo 270 · Deep-frying Oil Tester
Instruction manual

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1 Contents
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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% TPM1):
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% TPM1):
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% TPM1):
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:
___________________________
1typically, based on Testo in-house reference, at an ambient temperature of
25 °C.

1 Contents
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1Contents
1Contents .................................................................................................. 4
2Safety and the environment ................................................................... 6
2.1. About this document ....................................................................... 6
2.2. Ensure safety.................................................................................. 7
2.3. Protecting the environment ............................................................. 7
3Specifications.......................................................................................... 8
3.1. Use ................................................................................................. 8
3.2. Technical data................................................................................. 8
4Product description .............................................................................. 10
4.1. Overview....................................................................................... 10
4.2. Basic properties ............................................................................ 12
5First steps.............................................................................................. 13
5.1. Commissioning ............................................................................. 13
5.2. Getting to know the product .......................................................... 15
5.2.1. Switching the instrument on/off...................................................................... 15
5.2.2. Description of important functions and displays ............................................. 15
5.2.2.1. Alarm indicator ................................................................................ 15
5.2.2.2. Setting the TPM limit values ............................................................ 16
5.2.2.3. Hold function ................................................................................... 17
5.2.2.4. Auto-Hold function........................................................................... 17
5.2.2.5. Auto-off function .............................................................................. 17
5.2.2.6. Battery capacity............................................................................... 17
5.2.3. Configuring the instrument............................................................................. 18
5.2.4. Locking / unlocking configurations ................................................................. 20
6Using the product ................................................................................. 22
6.1. General measurement information................................................ 22
6.2. Carrying out measurements.......................................................... 23
6.3. Function test ................................................................................. 25
7Maintaining the product ....................................................................... 26
7.1. Changing batteries........................................................................ 26
7.2. Cleaning the sensor ...................................................................... 26
7.3. Cleaning the housing .................................................................... 27
7.4. Cleaning the plastic case .............................................................. 27
7.5. Calibrating/adjusting the instrument.............................................. 27
8Tips and assistance .............................................................................. 31
8.1. Questions and answers ................................................................ 31
8.2. Accessories and spare parts......................................................... 32

1 Contents
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2 Safety and the environment
6
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2Safety and the environment
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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
product.
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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 Indicates potential serious injuries
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NOTICE indicates circumstances that may lead to
damage to the products
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Symbols and writing standards
Represen-
tation
Explanation
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Note: Basic or further information.
1. ...
2. ...
Action: more steps, the sequence must be followed.
> ... Action: a step or an optional step.
- ... Result of an action.
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Menu Elements of the instrument, the instrument displays
or the program interface.

2 Safety and the environment
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[OK] Control keys of the instrument or buttons of the
program interface.
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... | ... Functions/paths within a menu.
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“...” Example entries
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2.2. Ensure safety
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> Only operate the product properly, for its intended purpose and
within the parameters specified in the technical data. Do not
use any force.
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> Do not operate the instrument if there are signs of damage at
the housing.
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> Dangers may also arise from the systems being measured or
the measuring environment: Note the safety regulations valid in
your area when performing the measurements.
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> Temperatures given on probes/sensors relate only to the
measuring range of the sensors. Do not expose handles and
feed lines to any temperatures in excess of 70 °C unless they
are expressly permitted for higher temperatures.
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> Do not perform contact measurements on non-insulated, live
parts.
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> Transport and store the instrument exclusively in the case
provided in order to avoid damage to the sensor.
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> Do not store the product together with solvents. Do not use any
desiccants.
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> Carry out only the maintenance and repair work on this
instrument that is described in the documentation. Follow the
prescribed steps exactly. Use only original spare parts
from Testo.
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2.3. Protecting the environment
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> Dispose of faulty rechargeable batteries/spent batteries in
accordance with the valid legal specifications.
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> At the end of its useful life, send the product to the separate
collection for electric and electronic devices (observe local
regulations) or return the product to Testo for disposal.
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3 Specifications
8
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3Specifications
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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
TPM2: ±2% (40.0 to 190.0 °C / 104 to 374 °F)
2typical, referred to internal reference, at an ambient temperature of 25 °C.

3 Specifications
9
Feature Values
Resolution Temperature: 0.1 °C / 0.1 °F
TPM: 0.5%
Power supply Batteries: 2x micro (type AAA)
Battery (micro AAA) Designation according to IEC: LR03
Chem. composition: Zn-MnO2 (alkaline)
Battery life at 20 °C Approx. 25 hrs continuous operation
(corresponds to 500 measurements) without
display illumination
Temperature
sensor
PTC
TPM sensor Capacitive sensor
Operating
temperature
0 to 50 °C / 32 to 122 °F
Ambient humidity 0 to 90%RH
Storage/transport
temperature
-20 to 70 °C / -4 to 158 °F
Display LCD, 2-line, display illumination
Weight 255 g
Housing material Top part: ABS
Lower part: ABS-PC glass fibre 10%
Dimensions Approx. 50 mm x 170 mm x 300 mm
(WxHxD)
TPM response time Approx. 30 secs
Protection class IP65
Warranty 24 months
EC Directive 2014/30/EC
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4 Product description
10
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4Product description
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4.1. Overview
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1 Display
2 Control keys
3 Battery compartment
4 Probe shaft
5 Oil quality (%TPM) and temperature sensor
6 Min. immersion depth
7 Max. immersion depth