ADM-870C AIRDATA MULTIMETER

AIR FLOW ● VELOCITY ● PRESSURE ● TEMPERATURE

·       Serial output to printer or computer

·       Laboratory accuracy

·       Mass flow equivalent or true air flow and velocity

·       200 Reading memory with average/ total/ recall

·       English and metric

·       Velgrid and airfoil

·       Supply and exhaust

·       Fume hoods

The ADM-870C AirData Multimeter is designed specifically for applications with very demanding

air distribution requirements. The unique features of this meter are ideally suited for maintaining air

quality control in facilities such as: hospitals, pharmaceutical, biological and medical research

laboratories, semiconductor manufacturing clean rooms, and other applications in which the

highest standards of the industry must be met.

The RS232 communications port allows the user to download readings to a printer or computer.

Readings can be downloaded either individually or as a sequence from memory. Optional

user-friendly software allows readings to be automatically inserted into an Excel™ or similar spreadsheet.

Air velocity and flow readings may be displayed as either standard density mass flow equivalent,

or as local density air velocity or volumetric flow, as compensated for variations in barometric

pressure and temperature.

The auto-read function allows continuous automatic readings for monitoring ongoing changes in

a system as it is being adjusted.

Auto-read may also be used with the memory function to automatically store up to 200 readings.

Each reading may be recalled, and the average and total of the readings may be displayed.

The averaging feature is useful for measurements made under fluctuating conditions.

The differential pressure and temperature associated with a velocity reading are in short-term memory

and may be displayed immediately following each velocity measurement.

The multifunction model ADM-870C provides digital display of readings in English and metric units

corrected for local or standard density. Features include auto-read, memory with total and average,

display of associated pressure and temperature, VelGrid, AirFoil probe and serial output to printer or

computer. Measures air velocity, absolute and differential pressure, temperature, and backpressure

compensated air flow when used with the series 8400 FLowHood.

Specifications

AIR VELOCITY: +/-3% of reading +/-7 fpm from 50 to 8000 fpm using standard Series 160 pilot tube

(29,000 fpm FS); 50 to 5000 fpm AirFoil; 50 to 2500 fpm VelGrid.

DIFFERENTIAL PRESSURE: +/-2% of reading +/-0.001 in wc from 0.0500 to 50.00 in wc, (0.0001 to 60 in wc FS);

20 psid safe pressure.

TEMPERATURE: +/-0.5๐F accuracy from 32๐F to 158๐F using ADT440 Series TemProbes (-67๐F to 250๐F FS);

0.1๐F resolution.

AIR FLOW: Accuracy is +/-3% of reading +/-7 cfm from 100 to 2000 cfm; range is 25 to 2500 supply,

25 to 1500 exhaust with 8400 FlowHood.

ABSOLUTE PRESSURE: +/-2% of reading +/-0.1 in Hg from 14 to 40 in Hg referenced to vacuum.

60 psia maximum safe pressure.

OPERATIONAL TEMPERATURE LIMITS: 40๐F to 140๐F.

AIR DENSITY CORRECTION: Local or standard (mass flow) air density correction range is 14 to 40 in Hg and

32๐F to 158๐F.

POSITION SENSITIVITY: Unaffected by position.

MEMORY: 200 readings, sequence labeled, sum and average.

CALIBRATION: Calibration certified NIST traceable.

READ OUT: 10 digit, 0.4”, high contrast, liquid crystal display.

METER HOUSING: 6.0” x 6.4” x 2.7” high impact ABS. 36 oz.

CONNECTIONS: 1/4" OD slip-on for 3/16” ID soft tubing.

BATTERY LIFE: Up to 3000 readings/charge, 500 recharge cycles.