TESTO 104-IR User manual

testo 104-IR
Combined infrared and penetration thermometer
Instruction manual en

Contents2
Instruction manual (en) ..............................................................3

3. Intended use 3
1. General information
Please read this document through carefully and familiarize
yourself with the operation of the product before putting it to use.
Keep this document to hand so that you can refer to it when
necessary.
2. Safety information
Avoid electrical hazards:
Do not conduct measurements on or near live parts!
Adhere to the product safety/warranty requirements:
Always 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 the purpose of maintenance or repair work.
Ensure correct disposal:
Dispose of defective rechargeable batteries and spent
batteries 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.
3. Intended use
The testo 104-IR is a robust food thermometer.
The product is designed for the following tasks/areas:
· Food sector: production, food service, spot check
measurement, incoming goods.
· 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 2 cm before the
probe handle or the plastic housing. If provided, information about
penetration depths in the instruction manual or the mark(s) on the
immersion/penetration probe should be observed.
The product should not be used in the following areas:
· Potentially explosive areas
· For diagnostic measurements in the medical sector
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4. Technical data4
4. Technical data
Feature Values
Penetration probe
Sensor type NTC
Measuring range 50  +250 °C
Resolution 0.1 °C/°F/°R
Accuracy (±1 digit) ±1.0 °C (50.0 to 30.1 °C)
±0.5 °C (30.0 to +99.9 °C)
±1 % of the measuring range (+100.0 to +250.0 °C)
Response time t99 10 s (measured in moving liquid)
Measuring rate 0.5 s
Infrared measurement
Lens 10:1 + opening diameter of the sensor (12 mm)
Laser type 2point laser
Output / wavelength < 1 mW / 8 to 14 μm
Class / standard 2 / DIN EN 608251:2007
Measuring range 30  +250 °C
Resolution 0.1 °C/°F/°R
Accuracy (±1 digit) ±2.5 °C (30.0 to 20.1 °C)
±2.0 °C (20.0 to 0.01 °C)
±1.5 °C or ±1.5 % of the measuring value (+0.0 to +250.0 °C)
Measuring rate 0.5 s
General
Operating temperature ± 2 % (20 to +50 °C)
Transportation/ 30 to +50 °C
storage temperature
Power supply 2 x AAA batteries
Battery life 10 h (typical at 25°C)
Housing ABS/TPE/PC and diecast zinc/stainless steel
Protection classIP65
Dimensions 281 x 48 x 21 mm (immersion/penetration probe folded out)
178 x 48 x 21 mm (immersion/penetration probe folded up)
Weight 197g (incl. batteries)
Standards EN 13485
EC Directive 2004/108/EC
Warranty 2 years, warranty terms: see www.testo.com/warranty
Information on standards
This product complies with the EN 13485 standard for
penetration measurement.
Suitability: S, T (storage, transportation)
Environment: E (transportable thermometer)
Accuracy class: 0.5
Measuring range: -50...+250 °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.

5. Commissioning 5
5. Product description
1 Infrared sensor
2 2-point laser
3 Display
4 Control keys:
·[ON]: switches the instrument on
·[OFF]: switches the instrument off
(hold button down)
·[]: switches to IR measurement,
carry out IR measurement (hold button
down)
·[]: switches to contact
measurement
·[HOLD/MIN/MAX]: holds measuring
value, displays minimum/maximum
value
5 Fold-out immersion/penetration probe,
folding out the probe switches the
instrument on
6 Battery compartment (at the back)
6. Commissioning
Inserting batteries
1 Use aslotted screwdriver to undo the
screw on the battery compartment.
2 Open the battery compartment.
3Insert batteries (2x type AAA). Observe
the polarity!
4Close the battery compartment.
5Tighten the screw.
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7. Operation6
7. Operation
7.1 Switching on/off
Switching on via fold-out probe
Fold out the probe.
- All display segments light up briefly. Contact measurement is
enabled ( lights up).
Switching on/off via control keys
Switch the instrument on: press [ON].
- All display segments light up briefly. IR measurement is
enabled ( lights up).
Switch off the instrument: press and hold down [OFF] until the
display goes off.
The instrument switches off automatically if no key is pressed:
for 10 minutes when the probe is folded out, or for 1 minute
when the probe is folded up.
7.2 Changing the measuring mode
Contact measurement —> IR measurement: press [].
IR measurement —> contact measurement: press [].
7.3 Measuring
Observe the information on IR measurement/contact
measurement (see chapter below).
IR measurement
- Instrument is on, IR measurement is enabled.
1Start measurement: press and hold down [].
2Lock in on measurement object using the laser points: laser
points mark the edges of the measuring range.
- The current measuring value is displayed.
3End measurement: release the key.
-Holdlights up. The last measuring value and min./max. value
are saved until the next measurement, or until the instrument is
switched off.
Switch between min., max. and recorded value: press [HOLD /
MIN / MAX].
The min./max. values can be reset:
· press []or switch the instrument off.
Restart measurement: press and hold down [].

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8. Settings
Setting the emission level:
· When IR measurement is enabled, []and at the same time,
press and hold down []( lights up).
· Emission level is displayed.
· Use []or []to change the value and wait for 3 s.
Contact measurement
- Instrument is on, contact measurement is enabled ( lights
up).
1Position the contact thermometer in the measurement object
and initiate the measurement: press [].
2End measurement: press [HOLD / MIN / MAX].
-Holdlights up. The last measuring value and min./max. value
are saved until the next measurement, or until the instrument is
switched off.
AutoHold function: if this function is enabled, the measurement
is ended automatically as soon as the measuring value is
stable, AutoHoldlights up.
Switch between min., max. and recorded value:
press [HOLD / MIN / MAX].
The min./max. values can be reset:
· switch the instrument off, switch to IR measurement or, while
the held measuring value is displayed (Holdlights up), press
and hold down [HOLD / MIN / MAX] until Clr lights up.
Restart measurement: press [].
8. Settings
- The instrument is switched off.
If no button is pressed for 3 s in settings mode, the instrument
switches to the next view.
1Press and hold down []and []until AutoHoldor Hold
flashes.
2Switch the AutoHold function on (AutoHold) or off (Hold): press
[]or [].
-°C, °F or °R flashes.
3Set measurement unit to degrees Celsius (°C), degrees
Fahrenheit (°F) or degrees Réaumur (°R): press []or [].
- flashes.
4Switch the laser on (on) or off (oFF): press []or [].
- The instrument switches to IR measurement.

10. Questions and answers8
9. Service and maintenance
9.1 Changing the batteries
1Use a slotted screwdriver to undo the
screw on the battery compartment.
2Open the battery compartment.
3Insert batteries (2x type AAA). Observe
the polarity!
4Close the battery compartment.
5Tighten 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!
The housing and probe can be disinfected using an alcohol-
based spray. In doing so, always follow the manufacturer’s
instructions.
Clean the housing and probe under running water and rub dry
with a towel.
Clean the lens carefully with a cotton bud dipped in water or
medical alcohol.
10. Questions and answers
Question Possible causes Possible solution
lights up Low battery Change batteries.
IR measurement:  Measuring values Keep to permissible
- - - lights up. outside measuring range measuring range.
Contact measurement  Valores de medición Keep to measuring
- - - lights. outside permissible range.
upmeasuring range
Instrument cannot Batteries dead. Change batteries.
be switched on
Instrument Instrument switches off Switch the
switches itself off. automatically instrument on again
after 10 min in contact
measurement mode and after
1 min after switching on in IR
measurement mode.
If we have not been able to answer your question, please contact
your local dealer or Testo Customer Service. For contact details,
please visit www.testo.com/service-contact.

11. Information on infrared (IR) measurement 9
11. Information on infrared (IR)
measurement
11.1 Measuring method
IR measurement is a visual measurement
Keep lens clean.
Do not carry out measurement with a foggy lens.
Keep the measuring range (the range between the instrument
and the measurement object) free of obstacles. There must be
no particles of dust or dirt, no humidity (rain, steam) and no
gases.
IR measurement is a surface measurement
If there is dirt, dust, frost, etc. on the surface, only the outermost
layer is measured, i.e. the dirt.
For vacuum-packed food, do not measure at air pockets.
Where the values are critical, always measure separately with
a contact thermometer. Particularly in the food sector: measure
core temperature with a penetration/immersion thermometer.
Adjustment time
If the ambient temperature changes (change of location,
e.g. measurement indoors/outdoors), the instrument must be
allowed to equalise for 15 minutes for infrared measurement.
11.2 Emissivity
Materials have different emission levels. This means they emit
various amounts of electromagnetic radiation. The emission level
of the instrument has a default setting of 0.95. This is ideal for the
measurement of food, non-metals (paper, ceramic, gypsum,
wood, paints and varnishes) and plastics.
11.3 Measuring range, distance
Depending on the distance of the measuring instrument from the
measurement object, a specific measuring range is recorded.
Measuring lens (ratio of distance : measuring range)
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In italics = laser
Not in italics = measuring range
* Optimised measuring distance

12. Information on contact measurement10
12. Information on contact
measurement
Observe the minimum penetration depth for
immersion/penetration probes:
10x probe diameter
Avoid using in aggressive acids or alkalis.

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