TESTO 112 User manual

Instruction manual en
testo 112
NTC-/Pt100 measuring instrument
Contents
General notes ......................................................2
1. Safety advice........................................................3
2. Intended purpose ................................................4
3. Product description ..............................................5
3.1 Display and control elements ..........................................5
3.2 Interfaces ........................................................................6
3.3 Voltage supply ................................................................6
4. Commissioning ....................................................7
5. Operation ............................................................8
5.1 Connecting a probe ........................................................8
5.2 Switching the instrument on / off ....................................8
5.3 Switching the display light on / off ..................................9
5.4 Performing settings ........................................................9
6. Measuring ..........................................................12
7. Care and maintenance ......................................14
8. Questions and answers......................................15
9. Technical data ....................................................16
10. Accessories/spare parts ....................................17
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

General notes2
General notes
This chapter provides important advice on using this
documentation.
The documentation contains information that must be
applied if the product is to be used safely and efficiently.
Please read this documentation through carefully and
familiarise 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.
Identification
Representation Meaning Comments
Note Offers helpful tips and information.
±, 1, 2 Objective Denotes the objective that is to be
achieved via the steps described. Where
steps are numbered, you must always
follow the order given!
Condition A condition that must be met if an action
is to be carried out as described.
i, 1, 2, ... Step Carry out steps. Where steps are
numbered, you must always follow the
order given!
Text Display text Text appears on the instrument display.
Control button Press the button.
- Result Denotes the result of a previous step.
ºCross-reference Refers to more extensive or detailed
information.
Button
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

1. Safety advice 3
1. Safety advice
This chapter gives general rules which must be followed
and observed if the product is to be handled safely.
Avoid personal injury/damage to equipment
iDo not use the measuring instrument and probes to
measure on or near live parts.
iNever store the measuring instrument/probes together
with solvents and do not use any desiccants.
Product safety/preserving warranty claims
iOperate the measuring instrument only within the
parameters specified in the Technical data.
iAlways use the measuring instrument properly and for its
intended purpose. Do not use force.
iDo not expose handles and feed lines to temperatures in
excess of 70 °C unless they are expressly permitted for
higher temperatures.
Temperatures given on probes / sensors relate only to
the measuring range of the sensors.
iOpen the instrument only when this is expressly
described in the documentation for maintenance and
repair purposes.
Carry out only the maintenance and repair work that is
described in the documentation. Follow the prescribed
steps when doing so. For safety reasons, use only
original spare parts from Testo.
Ensure correct disposal
iTake faulty rechargeable batteries/spent batteries to the
collection points provided for them.
iSend the product back to Testo at the end of its useful
life. We will ensure that it is disposed of in an
environmentally friendly manner.
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

2. Intended purpose4
2. Intended purpose
This chapter gives the areas of application for which the
product is intended.
Use the product only for those applications for which it was
designed. Ask Testo if you are in any doubt.
testo 112 is a compact, accurate measuring instrument for
measuring temperatures by means of plug-in temperature
probes. Thanks to the possibility of connecting not only
NTC probes, but also Pt100 probes, the testo 112 covers
a wide measurement range and at the same time provides
a high level of measurement accuracy.
The following components of the product are designed for continuous
contact with foodstuffs in accordance with the regulation
(EC) 1935/2004:
The measurement probe up to 1 cm before the probe handle or the
plastic housing. If provided, the information about penetration depths
in the instruction manual or the mark(s) on the measurement probes
should be noted.
The product was designed for the following
tasks/applications:
· Food sector
· Laboratories
· Applications requiring official calibration (only relevant for
Germany):
The testo 112 is approved for official calibration by the
Physikalisch-Technisches Institut PTB (national
metrology institute in Germany).
Approval mark:
The product should not be used in the following areas:
· Areas at risk of explosion
· Diagnostic measurements for medical purposes
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

3. Produktbeschreibung 5
3. Product description
This chapter provides an overview of the components of
the product and their functions.
3.1 Display and control
elements
Overview
Infrared interface, probe socket
Display
Control buttons
Battery compartment (rear)
Button functions
Button Functions
Switch instrument on;
switch instrument off (press and hold)
Switch display light on / off
Keep reading, display
maximum/minimum value
Open/leave configuration mode (press
and hold);
In configuration mode:
Confirm input
In configuration mode:
Increase value, select option
In configuration mode:
Reduce value, select option
Print data
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

3. Production description6
Important displays
Display Meaning
Battery capacity (bottom right in display):
· 4 segments in the battery symbol are lit: Instrument battery is fully
charged
· No segments in the battery symbol are lit: Battery is almost spent
Print function: Readings are sent to the printer
Upper alarm limit: Lit if exceeded
Lower alarm limit: Lit if undershot
3.2 Interfaces
Infrared interface
Measurement data can be sent to a Testo printer via the
infrared interface on the head of the instrument.
Probe socket
A plug-in measuring probe can be connected via the probe
socket on the head of the instrument.
3.3 Voltage supply
Voltage is supplied by means of a 9V monobloc battery
(included in delivery) or rechargeable battery. It is not
possible to run the instrument from the mains supply or
charge a rechargeable battery in the instrument.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

4. Commissioning 7
4. Commissioning
This chapter describes the steps required to commission
the product.
²Removing tthe pprotective ffilm oontthe ddisplay:
iPull the protective film off carefully.
²Inserting aabbattery/rechargeable bbattery:
1To open the battery compartment on the rear of the
instrument, push the lid of the battery compartment in
the direction of the arrow and remove it.
2Insert a battery/rechargeable battery (9V monobloc).
Observe the polarity!
3To close the battery compartment, replace the lid of
the battery compartment in position and push it
against the direction of the arrow.
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

5. Operation8
5. Operation
This chapter describes the steps that have to be executed
frequently when using the product.
5.1 Connecting a probe
Plug-in probes
Plug-in probes must be connected before the measuring
instrument is switched on so that they are recognised by
the instrument.
iInsert the connector of the probe into the probe
socket.
5.2 Switching the instrument
on / off
²Switching tthe iinstrument oon:
iPress .
- A segment test is carried out: All LCD-segments in
the display briefly light up.
- A function test of the instrument and the probe is
carried out. The instrument tests the entire
measurement channel regarding the adherence to
allowed margins of error.
The type of probe attached is displayed for
approx.2s (NTC or Pt 100).
An error is detected:
-rEF Error is displayed for approx. 2s, then ----- is
displayed. Please contact your dealer or Testo
customer service.
The function test was successful:
- Measurement view is opened: The current reading
is displayed.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

5. Operation 9
²Switching tthe iinstrument ooff:
iPress and hold (for approx. 2s) until the display
goes out.
5.3 Switching the display
light on / off
²Switching tthe ddisplay llight oon/off:
The instrument is switched on.
iPress .
5.4 Performing settings
1To oopen cconfiguration mmode:
The instrument is switched on and is in measurement
view. Hold, Max or Min are not activated.
iPress and hold (for approx. 2s) until the display
changes.
- The instrument is now in configuration mode.
You can change to the next function with .
You can leave configuration mode at any time. To do
so, press and hold (for approx. 2s) until the
instrument has changed to measurement view. Any
changes that have already been made in configuration
mode will be saved.
2To sset tthe aalarm ffunction:
Configuration mode is opened, ALARM is lit.
1Select the desired option with /and confirm
with :
·oFF: Switches the alarm function off.
·on: Switches the alarm function on.
oFF was selected:
ºContinue with objective TO SET THE MAX./MIN. PRINT
FUNCTION.
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

5. Operation10
on was selected:
2Use / to set the value for the upper alarm
threshold ( ) and confirm with .
3Use / to set the value for the lower alarm
threshold ( ) and confirm with .
3To sset tthe mmax./min. pprint ffunction:
Configuration mode is opened, MaxMin is flashing.
iSelect the desired option with /and confirm
with :
·on: Maximum and minimum values are printed out
as well when current or recorded readings are
printed.
· oFF: Maximum and minimum values are not printed
out as well when current or recorded readings are
printed.
4To sset AAuto OOff:
Configuration mode is opened, AutoOff is flashing.
iSelect the desired option with /and confirm
with :
·on: The measuring instrument switches off
automatically if no button is pressed for 10min (Hold
or Auto Hold is lit).
· oFF: The measuring instrument does not switch
itself off automatically.
5To sset tthe ddate/time:
Configuration mode is opened, YEAR is lit.
1Use / to set the current YEAR and confirm
with .
2Use / to set the other values for the month
(MONTH), day (DAY) and time (TIME) and confirm each
one with .
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

5. Operation 11
6To sset tthe uunit oofmmeasurement:
Configuration mode is opened, UNIT is lit.
iSelect the desired unit of measurement with /
and confirm with .
7To rreset:
Configuration mode is opened, RESET is lit.
iSelect the desired option with / and confirm
with :
·no: Instrument is not reset.
·Yes: Instrument is reset. The instrument is reset to
the factory settings.
The setting of date/ time is not reset.
- The instrument returns to measurement view.
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

6. Measuring12
6. Measuring
This chapter describes the steps that are required to
perform measurements with the product.
²Taking aammeasurement:
The instrument is switched on and is in measurement
view.
iPut the probe in position and read off the readings.
With the alarm function on and if the alarm threshold
is exceeded or undershot:
- or flashes and a signal tone is given.
- The alarm goes out if the reading goes below the
upper or above the lower threshold again.
²Holding tthe rreading, ddisplaying tthe mmaximum/minimum
value:
The current reading can be recorded. The maximum and
minimum values (since the instrument was last switched
on) can be displayed.
iPress several times until the desired value is
displayed.
- The following are displayed in turn:
·Hold: the recorded reading
·Max: Maximum value
·Min: Minimum value
· The current reading
- In addition to the maximum or minimum readings,
the 2nd reading line shows the current reading.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

6. Measuring 13
²Resetting tthe mmaximum/minimum vvalues:
The maximum/minimum values of all channels can be
reset to the current reading.
1Press several times until Max or Min lights up.
2Press and hold (approx. 2s).
- All maximum or minimum values are reset to the
current reading.
²Printing rreadings:
The readings shown on the display (current reading,
recorded reading or max./min. reading) can be printed
out.
A Testo printer is required (accessory part).
With the Max./Min. print function switched on, the
maximum and minimum values are printed out as well
as the current reading or recorded reading.
ºSee the chapter PERFORMING SETTINGS.
1Configure the instrument so that the value to be
printed is shown on the display.
2Press .
- The printout starts. On the printout appears:
· The measurement value
· The date and time
Only relevant for applications requiring official
calibration in Germany:
·A protocol line with the text:
Der ausgedruckte Messwert stimmt mit der Anzeige
des geeichten Messgeräts überein. (The printed
measurement value corresponds to the display
of the officially calibrated measuring instrument.)
· A signature line
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

7. Care and maintenance14
7. Care and maintenance
This chapter describes the steps that help to maintain the
functionality of the product and extend its service life.
±Cleaning tthe hhousing:
iClean the housing with a moist cloth (soap suds) if it
is dirty. Do not use aggressive cleaning agents or
solvents!
±Changing tthe bbattery/rechargeable bbattery:
The instrument is switched off.
1To open the battery compartment on the rear of the
instrument, push the lid of the battery compartment in
the direction of the arrow and remove it.
2Remove the spent battery/rechargeable battery and
insert a new battery/rechargeable battery
(9 V monobloc). Observe the polarity!
3To close the battery compartment, replace the lid of
the battery compartment in position and push it
against the direction of the arrow.
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

8. Questions and answers 15
8. Questions and answers
This chapter gives answers to frequently asked questions.
Question Possible causes Possible solution
is lit (bottom right · Instrument battery is · Replace instrument
in display). almost spent. battery.
Instrument switches · Auto Off function · Switch function off.
itself off automatically. is switched on.
· Residual capacity · Replace battery.
of battery is too low.
Display: ----- · Probe is not plugged in. · Switch instrument off,
connect probe and
switch instrument
back on again.
· Probe break. · Please contact your
dealer or Testo
Customer Service.
Display reacts slowly · Ambient temperature · Raise ambient
is very low. temperature.
Display: uuuuu · Permitted measuring · Keep to permitted
range was undershot. measuring range.
Display: ooooo · Permitted measuring · Keep to permitted
range was exceeded. measuring range.
Display: rEF Error · Reference measurement · Please contact your
out of tolerance of dealer or Testo
±0.1°C Customer Service.
If we are unable to answer your question, please contact
your dealer or Testo Customer Service. Contact details can
be found on the guarantee card or on the Internet under
www.testo.com .
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

9. Technical data16
9. Technical data
Instrument
Characteristic Value
Parameters Temperature (°C/°F)
Measuring range Pt100 probe: -50...+300°C / -58...+572°F
NTC probe: -50...+120°C / -58...+248°F
Resolution 0.1°C / 0.1°F
Accuracy ºSee SYSTEM ACCURACY
Probe 1x mini DIN socket for Pt100 or NTC temperature probe
Measuring rate 2/s
Operating temperature range -20...+50°C / -4...+122°F
Storage temperature -30...+70°C / -22...+158°F
Voltage supply 1x 9V monobloc battery/rech. battery
Battery life approx. 70h
Protection class with TopSafe (accessory part) and probe connected: IP65
EC Directive 89/336/EEC
Warranty 2 years
System accuracy
Measuring range Instrument Probe System
Measuring instrument + NTC temperature probe
-50.0°C...-25.1°C ±1% of reading ±0.7% of reading ±1.8% of reading
-25.0...+40.0°C ±0.2°C ±0.2°C ±0.5°C
+40.1...+80.00°C ±0.3°C ±0.4°C ±0.8°C
+80.1...+120.0°C ±0.5°C ±0.6°C ±1.2°C
Measuring instrument + Pt100 temperature probe
-50.0...-25.1°C ±0.2°C ±0.3°C ±0,6°C
-25.0...+40.0°C ±0.2°C ±0.2°C ±0.5°C
+40.1...+140.0°C ±0.2°C ±0.4°C ±0.7°C
+140.1...+200.0°C ±0.2°C ±0.6°C ±0.9°C
+200.1...+300.0°C ±0.3°C ±0.8°C ±1.2°C
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

10. Accessories/spare
parts
Name Part no.
NTC probes
Water-proof NTC immersion/penetration probe 0613 1212
Water-proof NTC surface probe for smooth surfaces 0613 1912
Efficient, robust air probe, NTC 0613 1712
Pt100 probes
Robust, water-proof Pt100 immersion/penetration probe 0609 1273
Efficient, robust air probe, Pt100 0609 1773
Miscellaneous
TopSafe testo 112, protects from impact and dirt particles 0516 0221
For a complete list of all accessories and spare parts,
please refer to the product catalogues and brochures or
look up our website: www.testo.com
10. Accessories/spare parts 17
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

Notes18
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

Notes 19
de
enfresitptsvnl????
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]

0977.1121/02/T/dr/14.03.2006
www.testo.com
testo AG
Postfach 1140, 79849 Lenzkirch
Testo-Straße 1, 79853 Lenzkirch
Telefon: [phone]
Fax: [phone]
E-Mail: [email protected]
Internet: http://www.testo.com
www.GlobalTestSupply.com
Find Quality Products Online at: [e-mail]