ADM-880C 07/20/09
1
1.0 INTRODUCTION
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 pitot
tube, 25-5,000 fpm using the AirFoil probe, and 25-2500 fpm using the VelGrid. The associated temperature, absolute
pressure, time and date may be viewed for any manual or automatic reading taken with an AirFoil probe or VelGrid in the
velocity mode. The associated differential pressure (velocity pressure) may also be viewed for velocity readings taken using
the pitot tube. Velocity measurements may be displayed in either local air density or the standard density (mass flow) sea
level equivalent. All measurement modes may be displayed in either English or metric units.
When used with the Series 8400 FlowHood System, this unit measures air flow, compensates for the density effects of
barometric pressure and temperature and may also be used to compensate for backpressure effects, allowing direct air flow
readings from 25-2500 cfm. The associated temperature, absolute pressure, time and date may be viewed for any manual
or automatic reading taken in the FlowHood mode. Flow measurements may be displayed in either local air density or the
standard density (mass flow) sea level equivalent.
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-880C AirData Multimeter offers additional features which greatly simplify the complex technical
requirements of highly demanding test and balance projects.
This model features an automatic reading mode which registers repeated measurements in any mode, with sequential
storage and recall of up to 2000 automatically or individually stored readings, with sequence tags for each value. Readings
may be stored in up to 25 different memory groups. Recall of the sum, average, standard deviation, time and date for all
readings in each measurement mode in any memory group, along with the minimum and maximum readings for each
measurement mode within the memory group is available at any point, without terminating the process. Readings in either
the current or a previous memory group may be erased or replaced with a new reading along with the new time, date and
associated data. The statistics will be revised to include the revised information.
This meter also features datalogging capabilities. The meter may be programmed with start, stop and interval times to take
and store up to 2000 readings at specified intervals with all of the recall capabilities described above.
The ADM-880C AirData Multimeter includes a custom serial cable with an RS232 connector for use with the RS232 port
on the meter. The kit also includes the Shortridge Instruments, Inc. ADM DataFlow software utility, which may be used to
download readings into a Microsoft Excel® or similar spreadsheet for display, analysis, and manipulation. The DataFlow
software downloads all readings in all measurement modes, along with all related statistics and associated data for each
measurement mode.
This RS232 port and cable may also be used with a compatible portable printer. The contents of all readings stored in
memory can be downloaded and printed as needed.
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.
Summary of Contents for AIRDATA ADM-880C
Page 42: ...ADM 880C 07 20 09 37 FIGURE 6 3 VELGRID ASSEMBLY...
Page 50: ...ADM 880C 07 20 09 45 FIGURE 10 1 FRAME STORAGE FIGURE 10 2 FLOWHOOD IN CASE...
Page 51: ...ADM 880C 07 20 09 46 FIGURE 10 3 FLOWHOOD ASSEMBLY...
Page 53: ...ADM 880C 07 20 09 48 FIGURE 10 7 1X5 FRAME ASSEMBLY FIGURE 10 8 3X3 FRAME ASSEMBLY...