TESTO 925 User manual

testo 925 –Thermometer for TC type K
0560 0925
Instruction manual

Contents
Contents
About this document ...........................................................................3
Safety and disposal..............................................................................3
Security..................................................................................................3
Disposal .................................................................................................4
Product-specific information...............................................................5
Intended use.........................................................................................5
Product description .............................................................................6
Instrument overview...............................................................................6
First steps.............................................................................................7
Inserting / changing batteries .................................................................7
Getting to know the product ...................................................................8
Connecting probes.................................................................................8
Switching the instrument on and off .......................................................8
Switching the display illumination on and off..........................................8
Establishing a Bluetooth®connection.....................................................9
Establishing a Bluetooth®connection to the testo Smart App..............10
Using the product...............................................................................11
Controls on the measuring instrument..................................................11
Implementing settings ..........................................................................12
Opening configuration mode ................................................................13
Setting the unit .....................................................................................14
Setting alarm thresholds.......................................................................14
Setting the alarm sound .......................................................................14
Carrying out a reset of the setting menus.............................................14
Carrying out a reset of the measuring instrument.................................15
Measuring ............................................................................................15
Freezing a reading, displaying the maximum/minimum value..............15
Resetting maximum/minimum values...................................................16
Carrying out multi-point mean calculation ............................................16
Carrying out continuous mean calculation............................................17
Printing data.........................................................................................17
Controls via testo Smart App............................................................18
Overview of operating controls.............................................................18
App options ..........................................................................................20

Contents
Setting the language............................................................................20
Displaying App Info..............................................................................20
Displaying the tutorial ..........................................................................20
Application menus ...............................................................................21
Selecting an application menu.............................................................21
Setting favourites.................................................................................21
Displaying information about an application ........................................21
Making measuring instrument settings ................................................22
Configuring the measuring instrument menu.......................................24
Setting Auto Off ...................................................................................25
Activating damping ..............................................................................25
Configuring alarms...............................................................................26
Setting the surface increment..............................................................26
Display of the readings........................................................................27
Adjusting the view................................................................................27
Exporting readings...............................................................................28
Excel (CSV) Export..............................................................................29
PDF Export..........................................................................................29
Maintaining the product....................................................................30
Inserting / changing batteries...............................................................30
Cleaning the instrument.......................................................................30
Technical data for testo 925 .............................................................31
Tips and assistance........................................................................... 32
Questions and answers.......................................................................32
Accessories and spare parts ...............................................................33

1 About this document
3
About this document
The instruction manual is an integral part of the instrument.
Keep this documentation to hand so that you can refer to it when necessary.
Always use the complete original instruction manual.
Please read this instruction manual through carefully and familiarize yourself
with the product before putting it to use.
Hand this instruction manual on to any subsequent users of the product.
Pay particular attention to the safety instructions and warning advice in order
to prevent injury and damage to the product.
Safety and disposal
Security
General safety instructions
Only operate the product properly, for its intended purpose, and within the
parameters specified in the technical data.
Do not apply any force.
Do not operate the instrument if there are signs of damage to the housing or
connected cables.
Dangers may also arise from objects to be measured or the measuring
environment. Always comply with the locally valid safety regulations when
carrying out measurements.
Do not store the product together with solvents.
Do not use any desiccants.
Only perform maintenance and repair work on this instrument that is
described in this documentation. Follow the prescribed steps exactly when
doing the work.
Use only original spare parts from Testo.
Batteries
Improper use of batteries may cause the batteries to be destroyed, or lead to
injury due to current surges, fire or escaping chemicals.
Only use the batteries supplied in accordance with the instructions in the
instruction manual.
Do not short-circuit the batteries.
Do not take the batteries apart and do not modify them.

2Safety and disposal
4
Do not expose the batteries to heavy impacts, water, fire or temperatures in
excess of 60 °C.
Do not store the batteries in the proximity of metal objects.
In the event of contact with battery acid: rinse affected areas thoroughly with
water, and if necessary consult a doctor.
Do not use any leaky or damaged batteries.
Warnings
Always pay attention to any information denoted by the following warnings.
Implement the precautionary measures specified!
DANGER
Risk of death!
WARNING
Indicates possible serious injury.
CAUTION
Indicates possible minor injury.
CAUTION
Indicates possible damage to equipment.
Disposal
Dispose of faulty rechargeable batteries and spent batteries in accordance
with the valid legal specifications.
At the end of its useful life, deliver the product to the separate collection
point for electric and electronic devices (observe local regulations) or return
the product to Testo for disposal.
WEEE Reg. No. DE 75334352

3 Product-specific information
5
Product-specific information
Do not carry out measurements on live components.
Do not expose handles and feed lines to temperatures in excess of 70°C
unless they are expressly approved for higher temperatures. Temperature
specifications on probes/sensors refer only to the measuring range of the
sensor system.
Only open the measuring instrument if this is expressly described in the
documentation for the purposes of maintenance or servicing.
Intended use
The testo 925 is a compact measuring instrument for measuring temperatures.
The product is designed for the following tasks/areas:
HVAC field
Measurement of surface temperatures
The product should not be used in the following areas:
In potentially explosive atmospheres.
For diagnostic measurements in the medical field.

5Product description
6
Product description
Instrument overview
1
Control keys
2
Display
3
Probe socket
4
Speaker for alarm sound
5
Battery compartment
Explanation of icons
Refer to instruction manual

6 First steps
7
First steps
Inserting / changing batteries

The instrument is switched off.
1
Open the battery compartment (on the back of the instrument) via the
snap lock.
2
Insert or replace batteries (3 x AA
batteries).
Observe the polarity!
3
Close the battery compartment.
When not in use for a long period: Take out the (rechargeable)
batteries.
Symbol explanation
Do not allow children under 6 years of age to play with batteries.
Do not throw batteries in the trash.
Do not charge batteries.
Do not place batteries near fire.
Batteries are recyclable.
+ -+

6First steps
8
Getting to know the product
Connecting probes
Plug-in probes can be connected via the probe socket(s) on the head of the
instrument.
1
Plug the probe's connector into the measuring instrument’s probe
socket.
Switching the instrument on and off
Switching on
1
Press and hold down (2 sec) the On/Off key.

Measurement view is opened:
The current reading is displayed or ----- lights up if no reading is
available.
Switching off
1
Press and hold down (2 sec) the On/Off key.

The display turns off.
Switching the display illumination on and
off

The measuring instrument is switched on.
1
Press and hold down (2 sec) the MENU/ENTER key.

The display illumination is switched on or off.

6 First steps
9
Establishing a Bluetooth®connection
The instrument can be connected to the testo Smart App via
Bluetooth®connection

The measuring instrument is switched on.

To enable the Bluetooth®connection
for the first time, press and hold
(approx. 2 sec) the ◄key.
While the instrument is trying to
establish a Bluetooth®connection,
the icon flashes on the display.
Bluetooth®remains enabled until it is
disabled manually by pressing and
holding (approx. 2 sec) the ◄key.
The measuring instrument saves the
Bluetooth®setting and, depending
on the configuration, starts up with
Bluetooth®enabled or disabled.