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Instruction manual

Contents

General notes ....................................................22

1. Safety advice......................................................23

2. Intended purpose ..............................................24

3. Product description............................................25

3.1 Display and control elements ........................................25

3.2 Interfaces ......................................................................26

3.3 Voltage supply ..............................................................26

4. Commissioning ..................................................27

5. Operation ..........................................................28

5.1 Connecting pressure hoses, Pitot tube..........................28

5.2 Switching the instrument on / off ..................................29

5.3 Switching the display light on / off ................................29

5.4 Performing settings ......................................................29

6. Measuring ..........................................................34

7. Care and maintenance ......................................36

8. Questions and answers......................................37

9. Technical data ....................................................38

10. Accessories/spare parts ....................................39

testo 512

Digital manometer

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

General notes22

General notes

This chapter provides important advice on using this

documentation.

The documentation contains information that must be

applied if the product is to be used safely and efficiently.

Please read this documentation through carefully and

familiarise yourself with the operation of the product before

putting it to use. Keep this document to hand so that you

can refer to it when necessary.

Identification

Representation Meaning Comments

Note Offers helpful tips and information.

±, 1, 2 Objective Denotes the objective that is to be

achieved via the steps described. Where

steps are numbered, you must always

follow the order given!

Condition A condition that must be met if an action

is to be carried out as described.

i, 1, 2, ... Step Carry out steps. Where steps are

numbered, you must always follow the

order given!

Text Display text Text appears on the instrument display.

Control button Press the button.

- Result Denotes the result of a previous step.

ºCross-reference Refers to more extensive or detailed

information.

Button

1. Safety advice 23

1. Safety advice

This chapter gives general rules which must be followed

and observed if the product is to be handled safely.

Avoid personal injury/damage to equipment

iDo not use the measuring instrument and probes to

measure on or near live parts.

iNever store the measuring instrument/probes together

with solvents and do not use any desiccants.

Product safety/preserving warranty claims

iOperate the measuring instrument only within the

parameters specified in the Technical data.

iAlways use the measuring instrument properly and for its

intended purpose. Do not use force.

iDo not expose handles and feed lines to temperatures in

excess of 70 °C unless they are expressly permitted for

higher temperatures.

Temperatures given on probes / sensors relate only to

the measuring range of the sensors.

iOpen the instrument only when this is expressly

described in the documentation for maintenance and

repair purposes.

Carry out only the maintenance and repair work that is

described in the documentation. Follow the prescribed

steps when doing so. For safety reasons, use only

original spare parts from Testo.

Ensure correct disposal

iTake faulty rechargeable batteries/spent batteries to the

collection points provided for them.

iSend the product back to Testo at the end of its useful

life. We will ensure that it is disposed of in an

environmentally friendly manner.

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2. Intended purpose24

2. Intended purpose

This chapter gives the areas of application for which the

product is intended.

Use the product only for those applications for which it was

designed. Ask Testo if you are in any doubt.

The testo 512 is a compact digital manometer with

temperature compensation for measuring the positive and

negative over-pressure and differential pressure of non-

aggressive gases. With the versions 2hPa, 20hPa and

200hPa, flow velocity can also be measured via a Pitot

tube.

The product was designed for the following

tasks/applications:

· Measurement on heating, ventilation and air conditioning

systems

· Customer service and maintenance work

The product should not be used in the following areas:

· Areas at risk of explosion.

· Diagnostic measurements for medical purposes

3. Product description 25

3. Product description

This chapter provides an overview of the components of

the product and their functions.

3.1 Display and control

elements

Overview

Infrared interface,

Pressure connection nipple

(4/6mm):

(+) positive over-pressure

(-) negative over-pressure

Display

Control buttons

Battery compartment (rear)

Button functions

Button Functions

Switch instrument on;

switch instrument off (press and hold)

Switch display light on / off

Keep reading, display

maximum/minimum value

Open/leave configuration mode (press

and hold);

In configuration mode:

Confirm input

In configuration mode:

Increase value, select option

In configuration mode:

Reduce value, select option

Print data

Carry out zeroing

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3. Product description26

Important displays

Display Meaning

Battery capacity (bottom right in display):

· 4 segments in the battery symbol are lit: Instrument battery is fully

charged

· No segments in the battery symbol are lit: Battery is almost spent

Print function: Readings are sent to the printer

3.2 Interfaces

Infrared interface

Measurement data can be sent to a Testo printer via the

infrared interface on the head of the instrument.

Pressure connection nipple

Pressure hoses can be connected via the pressure

connection nipple at the upper end of the instrument.

3.3 Voltage supply

Voltage is supplied by means of a 9V monobloc battery

(included in delivery) or rechargeable battery. It is not

possible to run the instrument from the mains supply or

charge a rechargeable battery in the instrument.

4. Commissioning 27

4. Commissioning

This chapter describes the steps required to commission

the product.

²Removing tthe pprotective ffilm oontthe ddisplay:

iPull the protective film off carefully.

²Inserting aabbattery/rechargeable bbattery:

1To open the battery compartment on the rear of the

instrument, push the lid of the battery compartment in

the direction of the arrow and remove it.

2Insert a battery/rechargeable battery (9V monobloc).

Observe the polarity!

3To close the battery compartment, replace the lid of

the battery compartment in position and push it

against the direction of the arrow.

- The instrument switches itself on.

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5. Operation28

5. Operation

This chapter describes the steps that have to be executed

frequently when using the product.

5.1 Connecting pressure

hoses, Pitot tube

²Connecting ppressure hhoses:

iAttach the pressure hoses (4 or 6mm) correctly

according to the mathematical signs:

· positive over-pressure measurement (+)

· negative over-pressure measurement (-)

· Differential pressure measurement (+ -)

²Connecting PPitot ttube ((versions 22hPa, 220hPa aand

200hPa oonly):

1Attach the pressure hoses (4 or 6mm) correctly

according to the mathematical signs:

2Attach pressure hoses to the connecting ends of the

Pitot tube:

Test Equipment Depot - 800.517.8431

99 Washington Street,Melrose, MA 02176

TestEquipmentDepot.com

5. Operation 29

5.2 Switching the instrument

on / off

²Switching tthe iinstrument oon:

iPress .

- A segment test is carried out: The measurement

value display segments light up briefly (2x 8888).

- Measurement view is opened: The current reading

is displayed.

²Switching tthe iinstrument ooff:

iPress and hold (for approx. 2s) until the display

goes out.

5.3 Switching the display

light on / off

²Switching tthe ddisplay llight oon/off:

The instrument is switched on.

iPress .

5.4 Performing settings

1To oopen cconfiguration mmode:

The instrument is switched on and is in measurement

view. Hold, Max or Min are not activated.

iPress and hold (for approx. 2s) until the display

changes.

- The instrument is now in configuration mode.

You can change to the next function with .

You can leave configuration mode at any time. To do

so, press and hold (for approx. 2s) until the

instrument has changed to measurement view. Any

changes that have already been made in configuration

mode will be saved.

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5. Operation30

2Setting tthe uunit oofppressure:

The configuration modus is open, the set unit blinks.

iSet the desired unit with / and confirm with

.

3Setting tthe pparameter ffor tthe llower mmeasurement vvalue

line:

The parameters temperature (internal temperature

sensor) or flow (versions 2hPa, 20hPa and 200hPa only)

can be displayed in the lower measurement value line.

The configuration modus is open, °C°F lights up.

1Select the desired option with / and confirm

with :

·On: The temperature measurement value is

displayed in the lower measurement value line,

except when the display of flow measurement

value is activated (versions 2hPa, 20hPa and

200hPa only).

· OFF: The temperature measurement value is not

displayed in the lower measurement value line.

OFF is selected, Version 2000hPa:

ºNext handling objective 4 SET DAMPING.

OFF is selected, Versions 2hPa, 20hPa and 200hPa:

-m/s and fpmx100 light up.

ºNext step 3.

On is selected:

- The set temperature blinks.

2Select the desired unit with / and confirm

with :

Version 2000hPa:

ºNext handling objective 4 SET DAMPING.

Versions 2hPa, 20hPa and 200hPa:

-m/s and fpmx100 light up.