testo 845 User guide

testo 845 Infrared measuring instrument

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

2 General information

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.
	Taste		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.

1. Safety instructions 3

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

iDo not use the measuring instrument on or close to live components.

iNever store the instrument together with solvents, do not use dessicants.

iInfrared measurement: When measuring live components, observe the necessary safety distance.

Product safety / Preserving warranty claim

iUse the measuring instrument only within the parameters given in the Technical Data.

iUse the instrument only for the purpose for which it is intended. Do not use force.

iDo not subject to electromagnetic radiation (microwaves, induction heating), static electricity, heat or extreme temperature fluctuations.

iDo 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.

iOpen 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

iHand in defective rechargeable batteries / empty batteries to the correct collecting points.

iSend 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.

3. Product description 5

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)

Button functions

Measurement triggerBattery compartment

IR diode for printer

Display

Slide switch

Operating buttons

Probe socket

USB interface

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 td	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.

4. Commissioning 7

4.Commissioning

This chapter describes the handling steps necessary for commissioning the instrument.

²Batteries /rechargeable batteries

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.

iInsert 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.

Placeholder sensoranbau	i	Remove the cover from the connection plug.

i Connect the humidity module to the plug and push into the housing.

8 5. Operation

5.2 Switching on / off

²Switching instrument on:

i Press measurement trigger and hold down

-The measurement display is opened: The current measurement value and the min. / max. values are displayed

²Switching instrument off:

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 configuration mode:
	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 temperature:
	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 func-
		tion.

º Continue with handling objective SETTING DISPLAY ILLUMINATION.

6. Setting instrument 9

3Setting display illumination:

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.

4Setting continuous measurement (see also Chapter 8. Measuring):

The configuration mode is open, °C is displayed.

iGo 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 laser:
	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 date:
	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 time:
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	.

ºContinue with handling objective ADJUSTING HUMIDITY MODULE AT 11.3 AND 75.3 %RH (only with integrated humidity module).