testo 845 User guide
Instruction manual en
Contents
General information ......................................................2
1. Safety instructions................................................3
2. Intended purpose ................................................4
3. Product description..............................................5
3.1 Display and operating elements ......................................5
3.2 Interfaces ........................................................................6
3.3 Voltage supply ................................................................6
4. Commissioning ....................................................7
5. Operation ............................................................7
5.1 Connecting probes..........................................................7
5.2 Switching on / off ............................................................8
6. Setting instrument ................................................8
6.1 Instrument configuration..................................................8
6.2 Measurement configuration ..........................................10
6.3 Degree of emission ......................................................13
6.4 Storing measurement protocols ....................................13
6.5 Printing measurement protocols....................................14
6.6 Printing current readings ..............................................14
6.7 Reading memory full ....................................................14
7. Programming ....................................................15
7.1 Installing software ..............................................................15
7.2 Connecting testo 845 to a PC ............................................15
7.3 Setting up connection ........................................................15
7.4 Opening connection............................................................16
7.5 Programming testo 845 ....................................................16
7.6 Disconnecting ....................................................................17
8. Measuring ..........................................................18
9. Care and maintenance ......................................21
10. Questions and answers......................................22
11. Technical data ....................................................23
12. Accessories / spare parts ..................................24
testo 845
Infrared measuring instrument
2
General information
This chapter provides important information on the use of this documentation.
This documentation contains information which must be observed in order to
ensure safe and efficient application of the product.
Read this document carefully and familiarize yourself with the operation of the
product before putting it to use. Keep this document close to hand in order to
be able to refer to it when necessary.
Symbols
Symbol Meaning Comments
Warning! Read the warning carefully and take the safety measures described!
Serious injury can occur if the safety measures are not taken.
Attention! Read the warning carefully and take the safety measures described!
Light injury or object damage can occur if the safety measures are
not taken.
Information Provides useful tips and information.
±, 1, 2 Handling objective Describes the objective reached by the following handling steps.
Observe the order for numbered handling objectives
Prerequisite Prerequisite must be fulfilled in order for a step to be carried out as
described
i, 1, 2, ... (Handling) step Carry out handling steps. Observe the order for numbered handling
steps!
Text Display text Text appears in instrument display.
Operating key Press key.
Function key Press key.
- Result Describes the result of a (handling) step previously carried out.
º Cross reference Reference to further or more detailed information.
Taste
General information
31. Safety instructions
1. Safety instructions
This chapter describes general rules which must be observed in order to
ensure safe use of the product.
Avoiding damage and injury
i Do not use the measuring instrument on or close to live components.
i Never store the instrument together with solvents, do not use dessicants.
i Infrared measurement: When measuring live components, observe the
necessary safety distance.
Product safety / Preserving warranty claim
i Use the measuring instrument only within the parameters given in the
Technical Data.
i Use the instrument only for the purpose for which it is intended. Do not use
force.
i Do not subject to electromagnetic radiation (microwaves, induction heating),
static electricity, heat or extreme temperature fluctuations.
i Do not subject handles and wires to temperatures over 70 °C if these are not
expressly approved for higher temperatures. Temperature information on
probes/sensors refers only to the measuring range of the sensors.
i Open the measuring instrument for maintenance or repair purposes only if
this is expressly described in the documentation.
Carry out only maintenance and repair work which is described in the documentation. When doing so, observe the steps prescribed. For safety
reasons, use only original Testo replacement parts.
i Laser radiation! Do not look into the laser beam. Laser class 2.
Correct disposal
i Hand in defective rechargeable batteries / empty batteries to the correct
collecting points.
i Send the product back to Testo if it is no longer to be used. We will dispose
of it ecologically.
4 2. Intended purpose
2. Intended purpose
This chapter describes the areas of application for which the instrument is
intended.
Use the product only for the areas for which it was designed. In case of doubt
please consult Testo.
The testo 845 is a compact infrared thermometer for the non-contact
measurement of surface temperatures. Using connected probes, additional
measurements can be made with the testo 845.
The product may
not
be used in the following areas:
· In areas where there is a danger of explosion.
· For diagnostic measurements in medicine.
For reasons of Patent Law, the testo 845 may not be used in Great Britain in
combination with the humidity module.
53. Product description
3. Product description
This chapter provides an overview of the components of the product and their
functions.
3.1 Display and operating elements
Overview
Infrared sensor
Humidity module
(standard with 0563 8451; retrofittable for 0563 8450)
Measurement trigger
Battery compartment
IR diode for printer
Display
Slide switch
Operating buttons
Probe socket
USB interface
Button functions
Button Functions
Change configuration settings
Printout of values on Testo IR printer
Instrument configuration: activate adjustment
Store a measurement protocol
Measurement and instrument configuration menu: apply values and
jump to next setting menu
Switch between possible display images
Measurement and instrument configuration menu: change setting values
6 3. Product description
Display
Display Functions
+ °C/°F Temperature reading IR
+ °C/°F Temperature reading contact probe
+ % Ambient humidity value in % relative humidity
+ °C/°F Ambient temperature reading
+ °Ctd Ambient dewpoint
+ °C Δtd Dewpoint distance
3.2 Interfaces
USB interface
The mains unit (accessory) for the voltage supply of the instrument can be
connected via the USB interface on the underside of the instrument.
Measurement / instrument data can be exchanged with a PC via the
USB interface. The measuring instrument is a HighPower instrument, an additional USB-hub may be necessary!
Probe socket(s)
Plug-in thermocouple probes type K can be connected via the probe socket on
the underside of the instrument.
3.3 Voltage supply
The voltage supply is provided by two mignon batteries (included in delivery) or
rechargeable batteries or via a USB mains unit (accessories). Rechargeable
batteries cannot be charged in the instrument.
74. Commissioning
4. Commissioning
This chapter describes the handling steps necessary for commissioning the
instrument.
²
Batteries/ rechargeable bbatteries
1 Open the battery compartment cover in the handle.
2 Fit batteries / rechargeable batteries (2 x Mignon) into the battery
compartment. Observe polarity!
3 Close the battery compartment cover.
5. Operation
This chapter describes the handling steps which are carried out often when
using the instrument
5.1 Connecting probes
Plug-in probes
Plug-in probes must be connected before switching on the measuring
instrument in order for them to be recognized by the instrument.
i Insert the connection plug of the probe into the probe socket of the
instrument.
Connecting humidity module 0636 9784
i Open the cover carefully using a suitable tool.
i Remove the cover from the connection plug.
i Connect the humidity module to the plug and
push into the housing.
Placeholder sensoranbau
8
5.2 Switching on / off
²
Switching iinstrument oon:
i Press measurement trigger and hold down
- The measurement display is opened: The current measurement value
and the min. / max. values are displayed
²
Switching iinstrument ooff:
i The instrument switches off automatically after 10 s if no button is
pressed.
6. Setting instrument
This chapter describes the handling steps required to adapt the measuring
instrument for special measurement tasks.
6.1 Instrument configuration
The basic settings for the measuring instrument are carried out in the configuration menu.
The configuration mode can be exited at any time. To do this, press .
Instrument switches to measurement display. Changes already applied
with in the configuration mode are saved.
1
Opening cconfiguration mmode:
The instrument is switched on and is in measurement display.
i Hold down measurement trigger and briefly press : °C is displayed.
- The instrument is now in configuration mode.
2
Setting ttemperature:
The configuration mode is open, °C is displayed.
i Set °C/°F with / °C/°F and confirm with .
The setting is applied with and the instrument jumps to the next function.
º Continue with handling objective SETTING DISPLAY ILLUMINATION.
5. Operation
96. Setting instrument
3
Setting ddisplay iillumination:
The configuration menu is open, °C is displayed.
i Go to menu Display illumination On/Off with .
Select the desired option with / and confirm with .
.
ºContinue with SET CONTINUOUS MEASUREMENT.
4
Setting ccontinuous mmeasurement
(see also Chapter 8. Measuring)
:
The configuration mode is open, °C is displayed.
i Go to menu Auto on/off with (2x).
Select the desired option with / and confirm with .
The laser function is not available during continuous measurement.
º Continue with handling objective SETTING LASER.
5
Setting llaser:
The configuration mode is open, °C is displayed.
i Go to menu Laser on/off with (3x).
Select the desired option with / and confirm with .
º Continue with handling objective SETTING DATE.
6
Setting ddate:
The configuration mode is open, °C is displayed.
i Go to menu Setting date with (4x).
Setting day: Select the desired day with / and confirm with .
Setting month: Select the desired month with / and
confirm with
.
Setting year: Select the desired year with
/
and confirm with .
º Continue with handling objective SETTING TIME.
7
Setting ttime:
The configuration mode is open, °C is displayed.
i Go to menu Setting time with (7x).
Setting hour: Select the desired hour with / and confirm with .
Setting minute: Select the desired minute with / and confirm
with .
º Continue with handling objective
ADJUSTING HUMIDITY MODULE AT 11.3 AND 75.3
%RH (only with integrated humidity module)
.
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