AirPro AP500 Operation User's Manual - page 18
12
AirPro
®
Instrument Models AP500/AP800
C o m m o n T e r m s
Within the AirPro Mobile Application Software, there are several terms that are used in different places. The
following is a brief explanation of the meanings of those terms and what AirPro Mobile feature set is applicable.
Term
Definition
Feature
Primary
Measurement
The Primary Measurement is displayed prominently on AirPro
Mobile’s Probe Measurement screen. The measurements available
depend on your probe and your user license.
Basic, Advanced
and Professional
Display and
Logging Setup
You can configure which measurements to display and log with
AirPro Mobile. The measurements available depend on your probe
and your user license. Options include Off, Display and Log, Display,
and Off.
Advanced and
Professional
Flow Calculations
Setup
Flow is calculated based on the probe’s velocity measurement and
the duct cross sectional area you specify.
Advanced and
Professional
Pitot Flow Setup
Pitot flow is calculated based on the probe’s differential pressure
measurement and the duct cross sectional area you specify.
Advanced and
Professional
K-Factor Flow
Setup
K-factor flow is calculated based on the probe’s differential pressure
measurement and the K-Factor you specify. The K-Factors are
obtained from the diffuser or flow station manufacturer.
Advanced and
Professional
Corrections &
Offsets
You can apply correction factors to thermal air flow, pitot flow and
pitot velocity. The measurement displayed and logged will be the raw
measurement multiplied by the value you specify here.
You can apply offsets to temperature, relative humidity, and
barometric pressure. The measurement displayed and logged will be
the raw measurement added to the value you specify here.
Advanced and
Professional
Probe Storage
Probe Storage displays the memory card status. It will indicate if the
card has a compatible format and if an existing file is on the card.
If there is a log file present on the card, you can download it to AirPro
Mobile. Typically a 2 minute log will take 5 minutes to download. You
can also extract files from the memory card by using a card reader.
Professional
Probe Name
Probe Name lets you name the instrument in use. You do not have to
name the instrument. The default is “Unit Name.”
Basic, Advanced
and Professional
Battery Level
Battery level indicates the percent of battery power remaining in the
instrument. It will also indicate if an AC/DC adapter is connected to
the probe. It does not display the battery level remaining of your
Smartphone.
Basic, Advanced
and Professional
Time Constant
The time constant is an averaging period. It is used to dampen the
displayed measurement. If you are experiencing fluctuating flows, a
longer time constant will slow down those fluctuations. The display
will update every second, but the displayed reading will be the
average over the last time constant period. For example, if the time
constant is 10 seconds, the display will update every second, but the
displayed reading will be the average from the last 10 seconds. This
is also referred to as a “moving average.”
Basic, Advanced
and Professional
Display Scrolling
You can configure the measurements shown on the instrument
display with this feature. The measurement options available will
depend on the type of probe and user license that you have.
Basic, Advanced
and Professional
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