TESTO 875-KIT Manual de usuario

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testo 875i · Thermal imager

Instruction manual

www. .com information@itm.com1.800.561.8187

2

www. .com information@itm.com1.800.561.8187

1 Contents

3

1Contents

1Contents ...................................................................................................3

2Safety and the environment....................................................................4

2.1. About this document........................................................................4

2.2. Ensure safety...................................................................................5

2.3. Protecting the environment..............................................................6

3Specifications ..........................................................................................7

3.1. Use ..................................................................................................7

3.2. Technical data .................................................................................8

4Product description...............................................................................13

4.1. Overview........................................................................................13

4.2. Basic properties.............................................................................14

5First steps ..............................................................................................16

5.1. Commissioning ..............................................................................16

5.2. Getting to know the product...........................................................18

6Using the product..................................................................................25

6.1. Menu functions ..............................................................................25

6.1.1. Measuring functions....................................................................................... 25

6.1.2. Image gallery .................................................................................................28

6.1.3. Scale..............................................................................................................29

6.1.4. Display...........................................................................................................30

6.1.5. Emissivity....................................................................................................... 30

6.1.6. Palette ...........................................................................................................33

6.1.7. Configuration .................................................................................................33

6.2. Measuring......................................................................................38

7Maintaining the product ........................................................................41

8Tips and assistance...............................................................................43

8.1. Questions and answers .................................................................43

8.2. Accessories and spare parts .........................................................44

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2 Safety and the environment

4

2Safety and the environment

2.1. About this document

Use

> Please read this documentation through carefully and

familiarize yourself with the product before putting it to use. Pay

particular attention to the safety instructions and warning advice

in order to prevent injuries and damage to the products.

> Keep this document to hand so that you can refer to it when

necessary.

> Hand this documentation on to any subsequent users of the

product.

Warnings

Always pay attention to information that is marked by the following

warnings with warning pictograms. Implement the specified

precautionary measures.

Representation Explanation

WARNING Indicates potential serious injuries

NOTICE indicates circumstances that may lead to

damage to the products

Symbols and writing standards

Represen-

tation

Explanation

Note: Basic or further information.

1. ...

2. ...

Action: more steps, the sequence must be followed.

> ... Action: a step or an optional step.

- ... Result of an action.

Menu Elements of the instrument, the instrument displays

or the program interface.

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2 Safety and the environment

5

Represen-

tation

Explanation

[OK] Control keys of the instrument or buttons of the

program interface.

... | ... Functions/paths within a menu.

“...” Example entries

2.2. Ensure safety

> Only operate the product properly, for its intended purpose and

within the parameters specified in the technical data. Do not

use any force.

> Do not operate the instrument if there are signs of damage at

the housing, mains unit or feed lines.

The thermal imager must not be directed at the sun or other

sources of intense radiation (e.g. objects with temperatures greater

than 500 °C, 800 °C while using the high-temperature filter) during

operation. This may lead to serious damage to the detector. The

manufacturer accepts no warranty for this type of damage to the

microbolometer detector.

> The objects to be measured or the measurement environment

may also pose risks: Note the safety regulations valid in your

area when performing the measurements.

> Do not store the product together with solvents. Do not use any

desiccants.

> Carry out only the maintenance and repair work on this

instrument that is described in the documentation. Follow the

prescribed steps exactly. Use only original spare parts from

Testo.

> Improper use of rechargeable batteries can lead to destruction

or injuries by means of current surges, fire or escaping

chemicals. The following instructions must be observed to avoid

such hazards:

• Only use in accordance with the directions in the instruction

manual.

• Do not short, take apart or modify.

• Do not expose to heavy impacts, water, fire or temperatures

above 60 °C.

• Do not store in the proximity of metal objects.

• Do not use leaky or damaged rechargeable batteries. In the

event of contact with battery acid: Thoroughly wash affected

area with water and consult a doctor, if necessary.

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2 Safety and the environment

6

• Only charge in the instrument or the recommended charging

station.

• Immediately stop the charging process if this is not

completed in the given time.

• In the event of improper function or signs of overheating,

immediately remove the rechargeable battery from the

measuring instrument/charging station. Caution:

Rechargeable battery may be hot!

• During longer breaks, remove the battery from the

instrument to avoid exhaustive discharge.

2.3. Protecting the environment

> Dispose of faulty rechargeable batteries/spent batteries in

accordance with the valid legal specifications.

> At the end of its useful life, send the product to the separate

collection for electric and electronic devices (observe local

regulations) or return the product to Testo for disposal.

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3 Specifications

7

3Specifications

3.1. Use

The testo 875i is a handy and robust thermal imager. It opens the

door to contactless determination and illustration of the temperature

distribution on surfaces for you.

Typical areas of application are:

• Building inspection (heating, ventilation and air conditioning

trade, company technicians, engineering offices, experts):

Energy evaluation of buildings

• Preventative maintenance (servicing): Mechanical and electrical

inspection of systems and machines

• Production monitoring (quality assurance): Monitoring

production processes

The testo 875i is available in several versions, which are tailored to

various usage requirements:

• testo 875-1i: High-quality wide-angle lens 32° x 23, detector

160 x 120, NETD < 50 mK, 2 GB SD card for approx. 1000

images, minimum focus distance 10 cm, integrated digital

camera

• testo 875-2i: High-quality wide-angle lens 32° x 23°, detector

160 x 120, NETD < 50 mK, 2 GB SD card for approx. 1000

images, minimum focus distance 10 cm, integrated digital

camera with power LEDs for illumination, isotherm, min./max.

on area, audio comments, display of surface moisture

distribution (real-time display with optional radio humidity

probe), high-temperature filter (optional)

Export control

Thermal imagers may be subject to the export restrictions of the

European Union.

The testo 875i with 33 Hz in particular can only be exported to

countries outside of the European Union with an export permit from

the authorities.

Please observe the national regulations for export control when

exporting.

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3 Specifications

8

3.2. Technical data

Infrared image output

Characteristic Values

Field of vision/min.

focusing distance

Standard lens: 32° x 23°/0.1 m (0.33 ft)

Telephoto lens (testo 875-2i only, optional):

9° x 7° / 0.5 m (1.64 ft)

Thermal sensitivity

(NETD)

<50 mK at 30 °C (86 °F)

Geometric resolution Standard lens: 3.3 mrad

Telephoto lens: 1 mrad

Refresh rate 33 Hz within EU and countries approved for

export, else 9 Hz

Focus Manual

Detector type FPA 160 x 120 pixels, a.Si

Spectral range 8 - 14 μm

Visual image output

Characteristic Values

Field of vision/min.

focusing distance

33° x 25°/0.4 m (1.31 ft)

Image size 640 x 480 pixels

Refresh rate 8 to 15 Hz

Image presentation

Characteristic Values

Image display 3.5" LCD with 320 x 240 pixels

Display options Infrared image/real image/infrared and real

image

Video stream 25 Hz

Colour palettes 10 options

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3 Specifications

9

Measuring

Characteristic Values

Temperature range

(can be changed)

Measuring range 1:

-20 - 100 °C (-4 - 212 °F)

Measuring range 2:

0 - 350 °C (32 - 662 °F)

Measuring range 3 (optional, testo 875-2i

only):

350 - 550 °C (662 - 1022 °F)

Accuracy With measuring range 1 activated, for

readings within the range of -20 - 100 °C

(-4 - 212 °F):

±2 °C (±3.6 °F)

With measuring range 2 activated, for

readings within the range of 0 - 350 °C

(32 - 662 °F):

±2 °C (±3.6 °F) or ±2 % of reading

(whichever is the greater)

With measuring range 3 activated (optional,

testo 875-2i only), for readings within the

range of 350 - 550 °C (662 - 1022 °F):

±3 % of reading

Reproducibility ±1 °C (±1.8 °F) or ±1 % (whichever is the

greater)

Measuring point

minimum diameter

Standard lens: 10 mm at 1 m

Telephoto lens: 3 mm at 1 m

On-time (time to

image)

30 s

Humidity and

ambient temperature

measurement with

radio probe (optional,

only testo 875-2i)

0…100%rF,

-20…70°C (-4…158°F)

Accuracy of radio

probe (optional, only

testo 875-2i)

±2%rF,

±0,5°C (0,9°F)

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3 Specifications

10

Characteristic Values

Measuring functions Standard measurement (1-point), 2-point

measurement, Cold-/Hotspot, solar (manual

entry of the radiation intensity)

Also with testo 875-2i: isotherm, min./max.

on area, Display of humidity image via

manual entry of the ambient humidity /

temperature (real-time display with optional

radio humidity probe)

Compensation for

reflected temperature

manual

Setting emissivity 0.01…1.00

Image storage

Characteristic Values

File format .bmt

Export options in .bmp, .jpg, .csv

Removable memory SD card

Memory capacity Scope of delivery: 2 GB (approx. 1000

images)

Lens

Characteristic Values

Standard lens 32° x 23°

Telephoto lens

(optional,

testo 875-2i only)

9° x 7°

Aperture 0.84

w

Laser measuring spot marking

Not available in USA, Japan, China.

Characteristic Values

Classification of the

laser

635 nm, Class 2

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