ADM-870C 07/14/091
1.0 INTRODUCTION
1.1 GENERAL DISCUSSION
You will find these instructions much easier to follow if you have the meter 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-870C AirData Multimeter performs the following essential functions. This meter measures air velocity when used
with a Dwyer Series 160 standard pitot tube, AirFoil probe, or VelGrid and automatically corrects for density variations due
to local barometric pressure. The meter also automatically corrects for density variations due to local temperature if the
TemProbe is connected. Velocity ranges are 25-29,000 fpm using a Dwyer Series 160 standard pitot tube, 25-5,000 fpm
using the AirFoil probe, and 25-2500 fpm using the VelGrid. When used with the Series 8400 FlowHood System, this unit
measures air flow and may compensate for density and backpressure effects, allowing direct air flow readings from 25-2500
cfm. Accurate differential pressure measurements can be obtained from 0.0001 in wc to 60.00 in wc. Absolute pressure
measurements range from 10-40 in Hg. Temperatures can be measured from -67
/ F to 250/ F, either individually, or in
conjunction with an air flow or velocity measurement.
The Model ADM-870C AirData Multimeter performs these additional functions which greatly simplify the complex technical
requirements of highly demanding test and balance projects. This model features an automatic mode which registers
repeated measurements for any capability, with sequential storage and recall of up to 200 automatically or individually
obtained measurements, with sequence tags for each value. Recall of the sum, average, along with the minimum or
maximum readings in the stored sequence is available at any point, without terminating the process. Flow and velocity
measurements may be displayed in either local air density or the standard density (mass flow) sea level equivalent.
The ADM-870C 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 the optional WinWedge software or HyperTerminal Private Edition and a computer to
download readings directly into any 32 bit Windows® 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.
To Next Page
Loading...
Need help?
General
