TESTO 512-1 User manual

testo 512-1 and testo 512-2
Digital differential pressure measuring instruments
0560 1512
0560 2512
Instruction manual

Contents
Contents
About this document ...........................................................................3
Safety and disposal..............................................................................3
Security..................................................................................................3
Disposal .................................................................................................4
Product-specific information...............................................................5
Intended use.........................................................................................5
Product description .............................................................................6
Instrument overview...............................................................................6
First steps.............................................................................................8
Inserting / changing batteries .................................................................8
Getting to know the product ...................................................................9
Connecting probes.................................................................................9
Switching the instrument on and off .......................................................9
Switching the display illumination on and off..........................................9
Establishing a Bluetooth®connection...................................................10
Establishing a Bluetooth®connection to the testo Smart App..............11
Using the product...............................................................................12
Controls on the measuring instrument..................................................12
Implementing settings ..........................................................................14
Opening configuration mode ................................................................15
Setting the unit .....................................................................................15
Setting the area (testo 512-1 only).......................................................15
Setting the Pitot tube factor “P.FACT” (testo 512-1 only).....................16
Setting the absolute pressure (testo 512-1 only)..................................16
Setting alarm thresholds.......................................................................17
Setting the alarm sound .......................................................................17
Enabling Bluetooth...............................................................................17
Carrying out a reset of the setting menus.............................................17
Carrying out a reset of the measuring instrument.................................18
Connecting pressure hoses..................................................................18
Connecting pressure hoses..................................................................18
Connecting a pitot tube (testo 512-1 only)............................................18
Measuring ............................................................................................18
Changing the measurement channel display .......................................19
Freezing a reading, displaying the maximum/minimum value..............19

Contents
Resetting maximum/minimum values..................................................19
Carrying out multi-point mean calculation............................................19
Carrying out continuous mean calculation...........................................21
Printing data ........................................................................................21
Controls via testo Smart App ...........................................................22
Overview of operating controls ............................................................22
App options..........................................................................................24
Setting the language............................................................................24
Displaying App Info..............................................................................24
Displaying the tutorial ..........................................................................24
Application menus ...............................................................................25
Selecting an application menu.............................................................25
Setting favourites.................................................................................25
Displaying information about an application ........................................25
Making measuring instrument settings ................................................26
Configuring the measuring instrument menu.......................................28
Setting Auto Off ...................................................................................29
Activating damping ..............................................................................29
Configuring alarms...............................................................................30
Setting the Correction Factor...............................................................30
Setting the area ...................................................................................31
Setting the Pitot tube factor (testo 512-1 only).....................................31
Setting the absolute pressure (testo 512-1 only) .................................32
Display of the readings........................................................................32
Adjusting the view................................................................................32
Exporting readings...............................................................................33
Excel (CSV) Export..............................................................................33
PDF Export..........................................................................................34
Maintaining the product....................................................................35
Inserting / changing batteries...............................................................35
Cleaning the instrument.......................................................................35
Technical data....................................................................................36
Tips and assistance........................................................................... 38
Questions and answers.......................................................................38
Accessories and spare parts ...............................................................39

1 About this document
3
About this document
The instruction manual is an integral part of the instrument.
Keep this documentation to hand so that you can refer to it when necessary.
Always use the complete original instruction manual.
Please read this instruction manual through carefully and familiarize yourself
with the product before putting it to use.
Hand this instruction manual on to any subsequent users of the product.
Pay particular attention to the safety instructions and warning advice in order
to prevent injury and damage to the product.
Safety and disposal
Security
General safety instructions
Only operate the product properly, for its intended purpose, and within the
parameters specified in the technical data.
Do not apply any force.
Do not operate the instrument if there are signs of damage to the housing or
connected cables.
Dangers may also arise from objects to be measured or the measuring
environment. Always comply with the locally valid safety regulations when
carrying out measurements.
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 when
doing the work.
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.

2Safety and disposal
4
Do not expose the batteries to heavy impacts, water, fire or temperatures in
excess of 60 °C.
Do not store the batteries in the proximity of metal objects.
In the event of contact with battery acid: rinse affected areas thoroughly with
water, and if necessary consult a doctor.
Do not use any leaky or damaged batteries.
Warnings
Always pay attention to any information denoted by the following warnings.
Implement the precautionary measures specified!
DANGER
Risk of death!
WARNING
Indicates possible serious injury.
CAUTION
Indicates possible minor injury.
CAUTION
Indicates possible damage to equipment.
Disposal
Dispose of faulty rechargeable batteries and spent batteries in accordance
with the valid legal specifications.
At the end of its useful life, deliver the product to the separate collection
point for electric and electronic devices (observe local regulations) or return
the product to Testo for disposal.
WEEE Reg. No. DE 75334352

3 Product-specific information
5
Product-specific information
Do not carry out measurements on live components.
Do not expose handles and feed lines to temperatures in excess of 70°C
unless they are expressly approved for higher temperatures. Temperature
specifications on probes/sensors refer only to the measuring range of the
sensor system.
Only open the measuring instrument if this is expressly described in the
documentation for the purposes of maintenance or servicing.
Intended use
The measuring instruments testo 512-1 and testo 512-2 are compact digital
pressure gauges with temperature compensation for measuring the positive and
negative overpressure and the differential pressure of non-aggressive gases.
The measuring instrument testo 512-1 can also be used to measure the flow
velocity via a pitot tube.
The product is designed for the following tasks/areas:
Measurements on heating, ventilation and air-conditioning systems
Customer service and maintenance work
Measuring range up to 200 hPa (testo 512-1)
Measuring range up to 2000 hPa (testo 512-2)
The product should not be used in the following areas:
In potentially explosive atmospheres
For diagnostic measurements in the medical field

5Product description
6
Product description
Instrument overview
testo 512-1
1
Control keys
2
Display
3
Connections for pressure hoses
4
Speaker for alarm sound
5
Battery compartment
Explanation of icons
Refer to instruction manual

5 Product description
7
testo 512-2
1
Control keys
2
Display
3
Connections for pressure hoses
4
Speaker for alarm sound
5
Battery compartment
Explanation of icons
Refer to instruction manual

6First steps
8
First steps
Inserting / changing batteries

The instrument is switched off.
1
Open the battery compartment (on the back of the instrument) via the
snap lock.
2
Insert or replace batteries (3 x AA
batteries).
Observe the polarity!
3
Close the battery compartment.
When not in use for a long period: Take out the (rechargeable)
batteries.
Symbol explanation
Do not allow children under 6 years of age to play with batteries.
Do not throw batteries in the trash.
Do not charge batteries.
Do not place batteries near fire.
Batteries are recyclable.
+ -+

6 First steps
9
Getting to know the product
Connecting probes
The required probes are permanently connected or integrated. It is not possible
to connect any additional sensors.
Switching the instrument on and off
Switching on
1
Press and hold down (2 sec) the On/Off key.

Measurement view is opened:
The current reading is displayed or ----- lights up if no reading is
available.
Switching off
1
Press and hold down (2 sec) the On/Off key.

The display turns off.
Switching the display illumination on and
off

The measuring instrument is switched on.
1
Press and hold down (2 sec) the MENU/ENTER key.

The display illumination is switched on or off.

6First steps
10
Establishing a Bluetooth®connection
The instrument can be connected to the testo Smart App via
Bluetooth®connection.

The measuring instrument is switched on.

When the instrument is started up,
Bluetooth®is enabled for approx. 60
seconds to establish a connection to
the testo Smart App.
While the instrument is trying to
establish a Bluetooth®connection,
the icon flashes on the display.
If the app connection is not
established immediately after
switching on the instrument,
Bluetooth®is automatically disabled
and can be enabled again via the
configuration menu if required (see
section 7.1.9 Enabling Bluetooth).

6 First steps
11
Establishing a Bluetooth®connection to the
testo Smart App
To establish a connection via Bluetooth®, you need a
tablet or smartphone with the Testo Smart App already
installed on it.
You can get the App for iOS instruments in the App Store
or for Android instruments in the Play Store.
Compatibility:
Requires iOS 12.0 or later/Android 6.0 or later,
requires Bluetooth®4.2.

Bluetooth®is enabled in the measuring instrument.
1
Open the testo Smart App.

The app automatically searches for Bluetooth®devices in the vicinity.
2
In the Sensors menu, check whether the required instrument is
connected.

If necessary, switch the instrument to be connected off and on again
to restart the connection module.

When the testo Smart App is connected to the measuring instrument,
the icon appears on the measuring instrument display.
The measuring instrument automatically synchronizes its date and
time settings with the testo Smart App.

7Using the product
12
Using the product
Controls on the measuring instrument

The instrument is switched on.

The testo Smart App is installed on the smartphone and connected
to the instrument via Bluetooth®.

Settings and controls are implemented either on the instrument or via
the app.
If the measuring instrument is connected to the testo Smart App,
settings can only be made via the app. The measuring instrument then
remains in the measurement view and other menus, e.g. Settings,
cannot be opened.
testo 512-1
1
On/Off / MODE/END key
2
->0<- / ◄key
3
Battery indicator
4
Differential pressure reading
5
Parameter 1 unit

7 Using the product
13
6
Flow velocity reading
7
Parameter 2 selected unit
8
Print / ►key
9
Illumination / MENU/ENTER key
testo 512-2
1
On/Off / MODE/END key
2
->0<- / ◄key
3
Battery indicator
4
Differential pressure reading
5
Parameter 1 unit
6
Print / ►key
7
Illumination / MENU/ENTER key

7Using the product
14
Implementing settings
Selecting, opening and setting functions
1
Press the relevant key to select the functions
Secondary assignment (long press)
All keys with a white corner have a secondary assignment, which can be
selected by pressing and holding the key (1 sec).
Adjustable functions
Ensure correct settings: all settings are transferred immediately. There
is no Cancel function.
Function
Setting options/comments
Carry out zero-point adjustment (long
press)
Carry out zero-point adjustment
Arrow left
Freeze a reading, display the
maximum/minimum value.
In configuration mode:
Decrease value, select option
On/Off (long press)
Switches the instrument on or off
MODE/END
Start or stop multi-point or continuous
mean calculation
Display illumination (long press)
OFF (display illumination not active) or
ON (display illumination active)

7 Using the product
15
Function
Setting options/comments
MENU/ENTER
Open configuration mode
In configuration mode:
Confirm input
Print (long press)
Output readings via external printer
Arrow right
Change second measurement
parameter (bottom line) (512-1 only).
In configuration mode:
Increase value, select option
Opening configuration mode

The instrument is switched on and is in the measurement view.
1
Press MENU/ENTER until the display changes.

The instrument is now in configuration mode.

Press MENU/ENTER to switch to the next function. You can leave
configuration mode at any time. To do this, press MODE/END until the
instrument has changed to the measurement view. Any changes that
have already been made in configuration mode will be saved.
Setting the unit

Configuration mode is open, “UNITS” is displayed.
1
Press ◄/ ►to choose between metric (“METR”) and imperial
(“IMPER”) units of measurement and confirm with MENU/ENTER.

The currently set unit flashes.
2
Press ◄/ ►to set the required unit and confirm with MENU/ENTER.
Setting the area (testo 512-1 only)

Configuration mode is open, “AREA” is displayed.

7Using the product
16
1
Press ◄/ ►to select whether the cross-sectional area is to be
entered in m² or in mm² and confirm with MENU/ENTER.
2
Press ◄/ ►to set the cross-sectional area and confirm with
MENU/ENTER.
Setting the Pitot tube factor “P.FACT”
(testo 512-1 only)
The pitot tube factor depends on the pitot tube used.

Configuration mode is open, “P.FACT” is displayed.
1
Press ◄/ ►to set the pitot tube factor and confirm with
MENU/ENTER.

The measuring instrument displays “T_AMB” and the ambient
temperature last measured.
The ambient temperature is required for internal calculations in the
measuring instrument and is measured, but not displayed as a separate
measurement parameter in the measurement view.
Setting the absolute pressure (testo 512-1
only)
The absolute pressure is required for pressure compensation of the flow velocity
reading.
The absolute pressure must be measured using a separate instrument or
obtained from the local weather station.

Configuration mode is open, “P_ABS” is displayed.
1
Press ◄/ ►to set the absolute pressure and confirm with
MENU/ENTER.

7 Using the product
17
Setting alarm thresholds

Configuration mode is open, “ min” is displayed.
1
Press ◄/ ►to set the lower alarm threshold value and confirm with
MENU/ENTER.

“max” is displayed.
2
Press ◄/ ►to set the upper alarm threshold value and confirm with
MENU/ENTER.
Setting the alarm sound

Configuration mode is open, “ ” is displayed.
1
Press ◄/ ►to enable/disable the alarm sound (“ON” / “OFF”) and
confirm with MENU/ENTER.
Enabling Bluetooth

Configuration mode is open, “ ” is displayed.
1
Press ◄/ ►to enable/disable Bluetooth (“ON” / “OFF”) and confirm
with MENU/ENTER.
Carrying out a reset of the setting menus

Configuration mode is open, “M. RES” (menu reset) is displayed.
1
Press ◄/ ►to select the required option and confirm with
MENU/ENTER:
oNO: Do not carry out reset.
oYES: Carry out reset. All concealed menus that were hidden
via the testo Smart App are displayed again.

The instrument returns to measurement view.

7Using the product
18
Carrying out a reset of the measuring
instrument

Configuration mode is open, “RESET” is displayed.
1
Press ◄/ ►to select the required option and confirm with
MENU/ENTER:
oNO: Do not carry out reset.
oYES: Carry out reset. The instrument is reset to the factory
settings.

The instrument returns to measurement view.
Connecting pressure hoses
Connecting pressure hoses
1
Connect the pressure hoses (4 or 6 mm) to the pressure connection
nipples with the correct signs:
oPositive overpressure measurement (+)
oNegative overpressure measurement (-)
oDifferential pressure measurement (+ -)
Connecting a pitot tube (testo 512-1 only)
1
Connect the pressure hoses (4 or 6 mm) to the pressure connection
nipples with the correct signs.
2
Attach the pressure hoses to the
connection ends of the pitot tube.
Measuring

The instrument is switched on and is in the measurement view.
1
Place the measuring instrument into the position in which the
measurement is to be carried out (operating position).
Changing the position of the measuring instrument can falsify the
readings. Do not change the position of the measuring instrument after
the zero-point adjustment. Carry out a zero-point adjustment before
each measurement to compensate for positioning errors and long-term
drift of the zero point.

7 Using the product
19
A zero-point adjustment is only possible in the range 0 to 25% of the
measuring range.
2
Carry out a zero-point adjustment with the pressure connections open:
Press and hold down ◄.
3
Connect the pressure hoses to the pressure system or position the
pitot tube and read the measured values.
Changing the measurement channel
display
1
Switch the display of the second parameter between speed (m/s, fpm)
and volume flow (m³/h, cfm, l/s (512-1 only)):
Press ►.
Freezing a reading, displaying the
maximum/minimum value
The current reading can be frozen. The maximum and minimum values since
the last time the instrument was switched on in the standard view or during a
multi-point or continuous measurement can be displayed.
1
Press ◄several times until the desired value is displayed.

The following are displayed in turn:
oHold: frozen measured value
oMax: Maximum value
oMin: Minimum value
oCurrent measuring value
Resetting maximum/minimum values
The maximum/minimum values of all channels can be reset to the current
reading.
1
Press ◄several times until Max or Min lights up.
2
Hold down ◄(approx. 2 s).

All maximum and minimum values are reset to the current reading.
Carrying out multi-point mean calculation