Omni Instruments ManoAir 500 Bedienungsanleitung Seite 28

ManoAir500
The static pressure (absolute pressure at the minus
connection) is displayed with the key "Baro".
A pressure must already be indicated in order to change between
the units of measurement (bar, kPa).
The selected unit of measurement remains saved, also after the
instrument is switched off.
If the key "Baro" is pressed for a long time (ca. 2 sec.), the display
shows the static pressure with a x10 increase in resolution, at the
same time the symbols MAX and MIN flash in the display. Any Offset
of the static pressure can now be corrected with the Max" and
"Min" keys.
The selection is terminated and saved with the "Baro" key.
The maximum values of the parameters ∆ ∆ ∆ ∆ p, Flow, Temp or
Baro are displayed with the key "Max".
Zero balance:
If the key "Max" is pressed for a long time in the ∆ ∆ ∆ ∆ p mode (ca. 2
sec.), the pressure measurement is zero balanced and the decimal
point flashes.
The zero balance takes ca. 30 sec. The balance value is automatically
saved and the instrument reverts to normal operation.
Changing the density:
If the key "Max" is pressed for a long time in the Flow mode with
the indication m/s (ca. 2 sec.), the display shows the basic value of
density instead of "m/s", with which the flow is calculated.
This basic value can be changed according measured medium and
will be corrected with the static pressure and a temperature of 15°C.
With connected Temperature probe, the density will be corrected
automatically with static pressure and temperature. The base value
can be changed according measured medium.
With connected Humidity probe, the density will be corrected
additionally with the humidity. The base value cannot be changed.
Base value of air density:
Schiltknecht Messtechnik AG 33