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 your purchase of the new testo 270 deep-frying oil tester.
All of our measuring instruments are checked by us in the factory before the
delivery and adjusted to their specific accuracy. To ensure that the accuracy
remains at the same high level, we recommend checking the instruments
regularly.
With the testo 270 deep-frying oil tester, you have the following options:
1 testo factory calibration according to ISO (accuracy +/- 2 % TPM1):
With the order number 0520 0028 you can order an ISO calibration from
Testo's calibration subsidiary, Testo Industrial Services in Kirchzarten. In the
process, your testo 270 is 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 included testo reference oil (article no. 0554 2650), you can check
the measuring instrument precisely and readjust it, if necessary (please
observe the description in the instruction manual for this).
3 with the simple function test in deep-frying oil (accuracy +/- 3 % TPM1):
For a simple function test without adjustment, we recommend a
measurement during the commissioning of your new instrument in unused
deep-frying oil at 150 to 180 °C.
You should ideally perform this measurement repeatedly in succession and
note the respective readings. The average of these readings is your specific
reference value for subsequent instrument testing. To use the determined
reference value as a comparative reading for a check, always perform the
measurement for instrument testing in unused deep-frying oil at 150 to
180 °C.
Please note that when changing the type of oil or the oil supplier, the
reference value must be determined anew.
Your specific reference value:
___________________________
1typical, referred to testo internal reference, at an ambient temperature of 25 °C
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1 Contents
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1Contents
1Contents .................................................................................................. 4
2Safety and the environment ................................................................... 5
2.1. About this document ....................................................................... 5
2.2. Ensure safety .................................................................................. 6
2.3. Protecting the environment ............................................................. 6
3Specifications.......................................................................................... 7
3.1. Use ................................................................................................. 7
3.2. Technical data................................................................................. 8
4Product description ................................................................................ 9
4.1. Overview......................................................................................... 9
4.2. Basic properties ............................................................................ 11
5First steps.............................................................................................. 12
5.1. Commissioning ............................................................................. 12
5.2. Getting to know the product .......................................................... 13
5.2.1. Switching the instrument on/off...................................................................... 13
5.2.2. Alarm LED ..................................................................................................... 14
5.2.3. Battery capacity ............................................................................................. 14
5.2.4. Hold function.................................................................................................. 14
5.2.5. Auto Hold function ......................................................................................... 15
5.2.6. Auto off function............................................................................................. 15
5.2.7. Setting the TPM limit values .......................................................................... 15
5.2.8. Locking/unlocking the TPM limit values ......................................................... 16
5.2.9. Configuring the instrument............................................................................. 16
5.2.10. Locking/unlocking the configurations ............................................................. 18
6Using the product ................................................................................. 19
6.1. General measuring notes.............................................................. 19
6.2. Performing measurements............................................................ 20
6.3. Function test ................................................................................. 22
7Maintaining the product ....................................................................... 23
7.1. Changing the batteries.................................................................. 23
7.2. Cleaning the sensor ...................................................................... 23
7.3. Cleaning the housing/TopSafe/wrist strap .................................... 24
7.4. Calibrating/adjusting the instrument.............................................. 25
8Tips and assistance .............................................................................. 28
8.1. Questions and answers ................................................................ 28
8.2. Accessories and spare parts......................................................... 29
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2 Safety and the environment
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2Safety and the environment
2.1. About this document
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.
Warnings
Always pay attention to information that is marked by the following
warnings with warning pictograms. Implement the specified
precautionary measures.
Representation Explanation
WARNING Indicates potential serious injuries
NOTICE indicates circumstances that may lead to
damage to the products
Symbols and writing standards
Represen-
tation
Explanation
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.
Menu Elements of the instrument, the instrument displays
or the program interface.
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2 Safety and the environment
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[OK] Control keys of the instrument or buttons of the
program interface.
... | ... Functions/paths within a menu.
“...” Example entries
2.2. Ensure safety
> Only operate the product properly, for its intended purpose and
within the parameters specified in the technical data. Do not
use any force.
> Do not operate the instrument if there are signs of damage at
the housing, mains unit or feed lines.
> The objects to be measured or the measurement environment
may also pose risks: Note the safety regulations valid in your
area when performing the measurements.
> 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.
> Do not perform contact measurements on non-insulated, live
parts.
> Transport and store the instrument exclusively in the aluminium
case provided in order to avoid damage to the sensor.
> Do not store the product together with solvents. Do not use any
desiccants.
> 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.
2.3. Protecting the environment
> Dispose of faulty rechargeable batteries/spent batteries in
accordance with the valid legal specifications.
> 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
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3Specifications
3.1. Use
The testo 270 is a handy measuring instrument for the fast
inspection of deep-frying oils and is designed in equal measure for
left and right handers.
The TPM value (total polar materials) enables a statement on the
ageing of deep-frying oils due to the effects of heat.
The following measuring tasks can be performed with the testo
270:
•Display temperature of the deep-frying oil:
Indicator for correct setting of the deep-fryer, inspection of
integrated temperature displays.
•Display TPM value:
Indicator for the ageing of the deep-frying oil.
The sensor works on a capacitive basis and determines the total
amount of polar materials in % as the reading.
The free fatty acids that are determined above all for the evaluation
of unloaded oils (rancidity) cannot be detected with the testo 270.
The temperature of the deep-frying oil to be measured must
be at least 40 °C. The maximum operating temperature is
190 °C, for brief periods 200 °C.
The following components of the product are designed
according to Regulation (EC) 1935/2004 for long-term
contact with foodstuffs:
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)1975/2004.
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3 Specifications
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3.2. Technical data
Characteristic Values
Measuring range Temperature: 40.0 to 200.0 °C
TPM: 0.5 to
Accuracy Temperature: ± 1.5 °C
TPM2: ±2 % (40.0 to 190.0 °C)
Resolution Temperature: 0.5 °C
TPM: 0.5 %
Power supply Batteries: 2x Micro (type AAA)
Battery life at 20 °C approx. 25 h of continuous operation
(corresponds to 500 measurements)
Temperature
sensor
PTC
TPM sensor Capacitive sensor (testo)
Operating
temperature
0 to 50 °C
Storage/transport
temperature
-20 to 70 °C
Display LCD, 2-line, display light
Weight incl.
TopSafe and wrist
strap
164 g
Housing material PA66 Glass fibre 30%
Dimensions of
instrument incl.
TopSafe
approx. 354 mm x 50 mm x 30 mm
TPM response
time3
< 30 s
Protection class with TopSafe: IP65
Warranty 24 months
EC Directive 2004/108/EC
2typical, referred to testo internal reference, at an ambient temperature of
25 °C
3Requirement: Reading within the accuracy limits
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4 Product description
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4Product description
4.1. Overview
Alarm LED
Display
Control keys
Battery compartment (on rear)
Probe shaft
Max. immersion depth
Min. immersion depth
Oil quality (% TPM) and
temperature sensor
Indications in the display
Displays Function/property
Temperature measuring range exceeded
Temperature measuring range undershot
Alarm LED activated
Acoustic alarm activated
Configuration mode or TPM limit values
locked
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4 Product description
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Displays Function/property
Battery capacity low (approx. 3 h remaining
life)
Battery capacity empty (approx. 1.5 h
remaining life)
Alarm Upper TPM limit value exceeded
Hold Readings held (manual)
Auto Hold Readings held (automatic)
°C/°F Temperature in °C or °F
Important display messages
Indications in the
display
Explanation
000 lights up when
Alarm LED is
activated: Alarm
LED lights up green
Instrument is ready to measure, sensor is not
in the oil
Reading >190
flashes
The measured temperature is above 190 °C.
A double acoustic signal sounds if the
acoustic alarm is switched on
Control keys
Keys Function/property
[/Hold] •Switching the instrument on/off
•Manually holding readings
•Configuring the instrument
[ ] •Setting the upper TPM limit value
•Configuring the instrument
[ ] •Setting the lower TPM limit value
•Configuring the instrument
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