Testo Testo 108 Manual

Watertight temperature measuring instrument

Instruction manual

testo 108

99 Washington Street
Melrose, MA 02176

Phone [phone]
Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

General information 9

1. General information

Please read this document through carefully and familiarise
yourself with the operation of the product before using it. Keep
this documentation to hand so that you can refer to it when
necessary.

2. Product description

Probe connector socket

Display

Switch On/ Switch Off

the instrument

Battery compartment

(on back of instrument)

Immersion/
penetration probe

Protective cover
recess (Softcase)

Minimum immersion/
penetration depth

Menu assistance in
configuration mode

Protective cover
(Softcase)

3. Safety information

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Avoid electrical hazards:

Do not conduct measurements on or near live parts!

Adhere to the product safety/guarantee requirements:

Operate the instrument properly and according to its intended
purpose and within the parameters specified. Do not use
force.

Do not store with solvents (e.g. acetone).
Only open the instrument if this is expressly described in the

documentation for maintenance purposes.

Ensure correct disposal:

Dispose of defective rechargeable batteries and spent battery
at the collection points provided.

Send the instrument directly to us at the end of its life cycle.
We will ensure that it is disposed of in an environmentally
friendly manner.

4. Intended Use10

4. Intended Use

The testo 108 is a watertight food thermometer.
The product is designed for the following tasks/areas:

· Food sector: production, food service, spot check
measurement

· Measuring liquids, pastes and semi-solid materials

The following product components are designed for continuous
contact with foodstuffs in accordance with Regulation (EC)
1935/2004:
The immersion/penetration probe from the tip up to 1 cm before the
probe’s handgrip or the plastic housing. If provided, the information
about penetration depths under point 7.2 in the instruction manual or
the mark(s) on the immersion/penetration probes should be noted.

The product may not be used in the following areas:

· Potentially explosive areas

· For diagnostic measurements in the medical sector

5. Technical data

Feature Values

Sensor type Thermocouple Type T (included), Thermocouple Type K

Measurement range -50...+300 °C/-58...+572 °F (only applies to metallic probe

Measurement Parameter Temperature in °C/°F
Resolution 0.1°C/°F
Instrument accuracy ±0.5 °C (-30...+70 °C)

(Ambient temperature ±0.5 °C ±0.5% of the measurement value
+23°C ±3°C) (-50...-30 °C/+70...+300 °C)

Probe accuracy ±0.5 °C (-40...-20 °C)

Adjustment time t99 10 s (measured in moving liquid)
Measurement rate 2 measurements per second
Operating temperature -20...+60 °C/-4...+140 °F
Transport/storage temperature -30...+70 °C/-22...+158 °F
Power supply 3 x AAA batteries
Battery life 2500 h (typically at 23 °C )
Housing TPE/PC +ABS/PC+ABS+10%GF
Protection class IP67 (the probe included in the set is connected)
Instrument dimensions 140 x 60 x 24,5 mm
Weight 150 g (instrument incl. battery, without soft case), 33 g (probe)
Display LCD, one-line, with status line
Standards

connectable

points)

±0.2 °C (-20...+70 °C)
±0.5 °C (+70...+125 °C)
±0.4% of the measurement value (+125...+300 °C)

EN 13485

EC Directive 2004/108/EC
Warranty

2 years

6. Initial operation 11

Information on standards

This product complies with the guidelines as per EN
13485 standard, performance: S, T (storage,
transportation), environment: E (transportable
thermometer)

Accuracy class: 1
Measuring range: -50...+300 °C
According to EN 13485, the measuring instrument

should be checked and calibrated regularly under the
terms of EN 13486 (recommended frequency: yearly).

Contact us for more information.

6. Initial operation

6.1 Remove the protective casing (Softcase)

The protective casing (Softcase) supplied with the testo 108
protects it from impact and contamination.

In addition, the probe can be safely stowed in the recess of the
supplied protective casing (Softcase) on the side of the appliance.

Probe cable

Probe

Protective cover recess
(Softcase)

Protective cover
(Softcase)

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6.2 Inserting batteries

1 Loosen the screw to the battery

compartment.
2 Open the battery compartment.
3 Insert batteries (3 x AAA).

O

bserve the polarity!
4 Close the battery compartment.
5 Tighten the screw.

7. Operation12

7. Operation

7.1 On / Off.

Switch the instrument on: Press quickly.

- Display test appears. The instrument is ready for
measurement.

Switch off the instrument: Hold down for at least 3 seconds

F

actory settings

The instrument is set up for the delivery as follows:

Unit: °C
Probe type: T
Auto off-Time: 10 min (instrument automatically switches off

10 mins after switching on).

To edit the settings see how to adjust the instrument.

7.2 Measuring

Observe the required immersion/penetration for correct
measuring result: at least 22 mm.

The housing must be exposed to a maximum operating
temperature of -20 to +60 °C. The measurement range from

-50 to +300

✓ Instrument is switched on.

Immerse/place the probe into the object being measured.

- The current measurement value is shown. Wait until the
measurement value does not change any more.

°C is only applicable to metallic probe points.

7.3 Changing the probe

Standard Type T and K probes with miniature TE-connectors,
aswell as the supplied Type T probe can be connected to the
testo 108.

1 Disconnect the connected probes.
2 Put the required Type T/K-probe in the

probe connector socket.

3

With Type K probes: In the settings
change the probe type, see instrument
set-up.

8. Setting up the instrument 13

8. Setting up the instrument

In the set-up menu the unit, type of probe, and Auto-off -Time
can be changed.

The set-up menu must always be completely run through, also

if the only one parameter has been changed.
✓ Instrument is switched off.
1 Switching the instrument on: Press quickly.

- Display test appears.
2 hold pr

- Configuration mode is opened, after presetting °

displayed.
3 Choose °C or °F unit: press and confirm with .

- After presetting T
4 Choose probe type Type K or Type T: press and confirm

with .

- After presetting 10, 30, 60 or off are displayed.
5 Auto-off Time 1

with .

- The configuration is finished. With the new settings, the

instrument changes in measurement mode.

essed down for about 3 sec during Displaytest.

C or °F is

ype K or Type T is shown.

0, 30, 60 or off choose: press and confirm

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9. Service and Maintenance14

9. Service and Maintenance

9.1 Changing the batteries

1 Loosen the screw on the battery

compartment.
2 Open the battery compartment.
3 Insert batteries (3 x AAA).

Observe the polarity!
4 Close the battery compartment.
5 Tighten the screw.

9.2 Cleaning the instrument

Only use weak, commercially available neutral/household cleaning
agents (e.g. washing-up liquid) to clean the instrument. Do not
use aggressive cleaning agents or solvent!

Protective cover (Softcase) can be cleaned with washing up
liquid.

The housing and probe can be disinfected using an alcohol­based spray. In doing so, always follow the manufacturer’s
instructions.

✓ The pr

obe included in the set is connected.

Clean the housing and probe under running water and rub dry
with a towel.

10. Questions and Answers

Question Possible causes Possible solution

lights on. Batteries dead. Change batteries.

- - - lights on. Measurement range exceeded Measurements can only

Instrument cannot be Batteries dead. Change batteries.
switched on.

Instrument switches itself off. The instrument switches itself Switch the instrument on. -

or fallen below. be carried out in the

off automatically as per the If required: To change the
configured Auto-off-Time. Auto-Off-Time see how to

range specified.

set up the instrument.

Test Equipment Depot - 800.517.8431

99 Washington Street, Melrose, MA 02176

TestEquipmentDepot.com

0973 1080 de en fr es it nl 03