ADM-860C 04/14/081
1.0 INTRODUCTION
1.1 GENERAL DISCUSSION
These instructions will be much easier to follow if the meter is in front of you as you read through them. You can
note the various connections and press the keys, observing the displayed results as you read through the various
procedures. The operation of the meter is quite simple and straightforward, as will become apparent after a little
practice.
The ADM-860C AirData Multimeter performs the following essential functions. This meter measures air velocity
when used with a pitot tube, AirFoil probe, or VelGrid, and automatically corrects for density variations due to local
temperature and barometric pressure. When used with the Series 8400 FlowHood Kit, this meter measures air
flow and compensates for air density and backpressure effects, allowing direct air flow readings. Accurate
differential pressure measurements can be obtained using static pressure probes, pitot tubes, or any direct
pressure source. Temperature and absolute pressure measurements can be taken over a wide range.
The Model ADM-860C AirData Multimeter features sequential storage and recall of up to 100 individually obtained
measurements, with sequence tags for each value. Recall of the sum and average, along with the minimum and
maximum readings for the stored sequence is available at any point, without terminating the process.
The ADM-860C has an RS232 port that may be used with a portable printer. The optional printer and cable can
download each reading as it is taken, or the contents of the memory can be downloaded and printed all at once.
The RS232 link may also be used in conjunction with optional WinWedge software or HyperTerminal Private
Edition and a computer to download readings directly into any 32 bit Windows® (95, 98, ME, NT 2000, XP or
VISTA) application for display, analysis, and manipulation.
Internal calibration and zeroing of the AirData Multimeter are fully automatic. No external adjustments are ever
needed. This instrument is extremely tolerant of overpressure, and is unaffected by position or ambient
temperatures from 40
/ F to 140 / F.
It is recommended that the AirData Multimeter kit be returned to the factory at least every two years for
recalibration and software update. This preventive maintenance program will assure that the original accuracy
of the meter is maintained throughout the life of the meter.
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