TESTO 552 Manuel utilisateur

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1

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testo 552 - 'LJLWDO9DFXXP0HWHU

Instruction manual

Content

Content

1

Safety and waste disposal ................................................................... 1

1.1 About this document ............................................................................. 1

1.2 Safety .................................................................................................... 1

1.3 Waste disposal ...................................................................................... 2

2

Technical data ..................................................................................... 3

3

Description of the instrument ............................................................... 4

3.1 Use ........................................................................................................ 4

3.2 Instrument overview .............................................................................. 4

3.3 Displays overview.................................................................................. 5

3.4 Control keys overview ........................................................................... 6

3.5 Connection options overview ................................................................ 7

4

Operation............................................................................................. 8

4.1 Connecting ............................................................................................ 8

4.2 Switching instrument on and off............................................................ 9

4.3 Switching background illumination on and off ...................................... 9

4.4 Setting units and AutoOff ...................................................................... 9

4.5 Displaying temperature values ............................................................ 12

4.6 &DOLEUDWLRQ$GMXVWPHQW........................................................................ 13

4.7 Operating as a probe on the testo 570................................................ 13

5

Maintenance ...................................................................................... 14

5.1 Changing batteries .............................................................................. 14

5.2 Cleaning the instrument....................................................................... 14

6

Tips and assistance ........................................................................... 15

6.1 Questions and answers ....................................................................... 15

6.2 Accessories and spare parts ............................................................... 15

1 Safety and waste disposal

1

1

Safety and waste disposal

1.1

About this document

•The instruction manual is an integral part of the instrument.

•Keep this document throughout the entire operating life of the instrument.

•Always use the complete original instruction manual.

•Please read this instruction manual through carefully and familiarise

yourself with the product before putting it to use.

•Pay particular attention to the safety instructions and warning advice in

order to prevent injury and damage to the product.

1.2

Safety

General safety instructions

•Only operate this instrument in the proper manner, for its intended purpose

and within the parameters specified in the technical data.

•Do not apply any force to open the instrument.

•Do not operate the instrument if there are signs of damage at the housing,

mains unit or connected cables.

•Always comply with the locally valid safety regulations when carrying out

measurements. Dangers may also arise from objects to be measured or

the measuring environment.

•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.

•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.

1 Safety and waste disposal

2

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

in excess of Ɠ)60 °C.

•Do not store the batteries in the proximity of metal objects.

•Do not use any leaky or damaged batteries.

•In the event of contact with battery acid: rinse affected areas thoroughly

with water, and if necessary consult a doctor.

•Take batteries out of the instrument immediately if they are not functioning

properly or if they show signs of overheating.

•Remove all batteries from the instrument if it is to remain unused for a

longer period.

Warnings

Always pay attention to any information denoted by the following warnings.

Implement the precautionary measures specified!

Display Explanation

WARNING

Indicates possible serious injury.

CAUTION

Indicates possible minor injury.

ATTENTION

Indicates possible damage to equipment.

1.3

Waste disposal

•Dispose of faulty rechargeable batteries and spent batteries in accordance

with the valid legal specifications.

•At the end of its useful life, dispose of the instrument via separate

collection for electro- and electronic devices. Please observe local

regulations concerning waste disposal. Or alternatively return the product

to Testo for disposal.

2 Technical data

3

2

Technical data

Feature Values

Absolute pressure sensor

(absolute)

max. 6 bar (87 psi)

ATTENTION

Pressure exceeded.

Destruction of the absolute pressure

sensor!

-

Do not exceed the maximum value.

Vacuum measuring range 1100 - 0 mbar / 825080 - 0 micron

Sensor overload (relative) 5 bar / 72 psi

Vacuum resolution 0.01 hPa / 10 micron

Vacuum accuracy

(at Ɠ)22 °C, after

calibration, confidence

level 95%)

- 0 to  micron:

±10RIUHDGLQJRUƄ micron

ZKLFKHYHULVJUHDWHU 





Operating temperature -20 to 50 °C / -4 to 122 °F

Storage temperature -20 to 50 °C / -4 to 122 °F

Temperature measuring

range

-20 to 50 °C / -4 to 122 °F

Temperature resolution 0.1 °C / 0.1 °F

Battery life 2400 h (2x AA) (approx. 130 h with background

illumination activated)

Protection class IP 42

Parameter mmHg, Torr, mbar, hPa, micron, inH2O, inHg.

Pa

Measuring cycle 0.5 sec

Sensor 1× absolute pressure sensor

Connections - 2× 7/16" UNF

- 1x MiniDIN (t570)

Warranty 2 years

Warranty terms: see website

www.testo.com/warranty

3 Description of the instrument

4

Setting values alarm threshold

Unit Adjustment resolution

mbar / hPa 0 - 7,5 0,05

micron 0 - 7500 50

3

Description of the instrument

3.1

Use

The testo 552 is a digital vacuum gauge for the precise measurement of

extremely small pressures in the vacuum range. This allows you to monitor the

evacuation (usually during commissioning) of refrigeration systems and heat

pumps.

With the testo 552, you can therefore measure the current pressure in a

refrigeration system, and thus gather information about the degree of

dehumidification and the removal of foreign matter (oils, foreign gases, etc.).

A vacuum gauge is always used in conjunction with a vacuum pump (generates

the vacuum). A manifold (analogue or digital) is also often used in order to

obtain controlled access to the refrigeration system.

3.2

Instrument overview

3 Description of the instrument

5

Element Function

1

MiniDIN probe socket Cable connection for connecting to the testo

570.

2

Display Displays instrument status icons, measuring

units and measuring values.

3

Control keys Instrument operation.

4

Connections 7/16"

UNF, brass

Connection of refrigerant hoses, vacuum pump,

manifolds, etc..

5

Hook Suspension device

6

Battery compartment Contains two AA batteries.

3.3

Displays overview

Element Function

1

Icon [ ] Displays the remaining battery capacity.

>75%

>50%

>25%

<10%

2

Icon [ ] An alarm threshold is set.

3 Description of the instrument

6

Element Function

3

Temperature display - selected, currently measured temperature

- Measurement parameter:

TH2O = evaporation temperature of water

Tamb = ambient temperature

Δt = temperature difference between

evaporation temperature of water and ambient

temperature

- unit set (°C, °F)

4

Slave Mode Appears when the testo 552 is connected to the

testo 570 via a connecting cable and the

testo 570 is in Evacuation mode.

5

Pressure display Displays the currently measured pressure, the

measurement parameter and the unit set (mmHJ,

Torr, mbar, hPa, micron, inHO, inHg).

3.4

Control keys overview

Element Function

1

- Switches to the settings.

- Switches between the set-up options.

2

Switches the display illumination on or off.

3

Switches the instrument on or off.

4

- Switches between the temperature displays.

- Navigates in the Set menu.

3 Description of the instrument

7

3.5

Connection options overview

In regard to the following connection options, the testo 570 is used to

represent any manifold and can use the testo 552 as a probe via a

MiniDIN connecting cable (see Option 1).

Option 1 (recommended)

The testo 552 is connected at the point that is furthest from the

vacuum pump. This ensures that a sufficiently deep vacuum is

generated throughout the system in order to remove any moisture or

foreign gases that may be present.

Option 2

Option 3

4 Operation

8

Option 4

Option 5

4

Operation

4.1

Connecting

Always use refrigerant hoses that are specifically intended for

evacuations.

1

- Remove sealing caps.

- Connect the testo 552 to the circuit.