Pressure Compensation; Important Note - TESTO 535 Instruction Manual

Changing the settings - Configuration
"START/STOP" button: keep pressed when switching on.
The following settings can be changed:
Auto ON
Auto-OFF
function
activated
Auto OFF
Auto-OFF
function
not activated

Pressure compensation

Please note that the CO
This effect is compensated in the instrument. To do this, enter the correct air pressure (See
Changing the settings - Configuration). The air pressure depends on the height of the location above
mean sea level (See the "Barometric height formula" table on the next page) and weather influences.
Example:
You are located at a height of 800 m above sea level where you have a mean annual air pressure of 920
hPa. According to the barometer (1003 hPa) and the height correction of the barometer (to 1013 hPa)
the mean annual air pressure has to be reduced by 10 (910 hPa air pressure).
Memory function for current, maximum and minimum values
The following displays appear when this button is pressed again and again:
1st press: HOLD -
2nd press: MAX - Displays saved max. values
3rd press: MIN - Displays saved min. values
4th press: MEAN -
5th press: MEAN -
6th press: MEAN-

Important note:

The min/max values are measured from the time the instrument is switched on. The values are reset if
the instrument is switched off and then on again.
Printout
A printout of the reading with date and time can be activated by pressing the PRINT button.
The max, min and mean values also appear on the printout of a multi-point or timed mean cal-
culation. If a reading was frozen at a certain point in the display via the HOLD button, this rea-
ding appears in the printout with the time and date when the reading was frozen.
Date
01:01
BAT
1998
Battery in
instrument
01:01
ACCU
1998
Rechargeable
battery in
instrument
reading depends on the absolute air pressure.
2
Readings are frozen in display
Multi-point mean calculation
Timed mean calculation
Return to measuring mode
Time
00:00
Next Next
position position
00:00
Set value
Set value
3
Air pressure
1013
ppm
hPa
1013
Vol%
hPa
Next
position
Meas-
uring
mode
Set value