Mastech AZ8903 User manual

OPERATION MANUAL

Model:

8904

8903

8906

Model:8903/8904/8906

RS232

INTEGRAL VANE

DIGITAL ANEMOMETER

Congratulations on your purchase

of this Integral vane anemometer.

The meter features versatile functions,

use it to check air velocity FPM (Feet

per minute) and CFM (Cubic feet per

minute) in residential , light commercial

and standard commercial systems.

Thank you for selecting the meter.

Please read this operation manual

throughly before operation.

This meter has many user-friendly

features, all the features are accessible

through the keypads.

Please contact the store or the place

you purchased for the rest models you

might interested in.

The meter is most ideal for HVAC/R

technicians measuring Heat / Ventilation

/ Air conditioning / Refrigerating wind flow

and temperature.

CAUTION: Objects strike the fan may

damage the meter.

Model:

Knot, MPH,

KM/H

selectable

AZ8903

AZ8904

AZ8906

Yes

Air Flow

Volume

Measurement

A. Measuring Air Velocity (Single point)

Feet per Minute (FPM).

B. Continuous Moving Average.

C. MIN/MAX/AVG reading on a single

point.

D. Air Velocity average for multiple

points ( 8904.8906 model only).

E. Non Sleep Mode(Bypass auto power

off).

F. Default setting ( Imperial/ Metric)

G. RS232 interface setting.

H. Auto power off function.

I. FTM , MPH , KNOT unit selectable

(8904.8906 model only).

J. Direct measuring of air flow

(Single point) CFM ( 8906 only).

K. Obtain air flow (CFM) average

for multi-point ( 8906 only).

FEATURES

Typical Measurement

a) Please placethe meter inthe

airstream. Make surethat the

airstream and thesensor

are aligned asshown ( 20

degrees maximum).

b) 3 secondsfor the

reading to stabilize.

Rear side

HOLD

AVERAGE

MULTI-POINT

MIN/MAX REC

SINGLE-POINT

Model:8903

ON-OFF

RESET

HOLD

AVERAGE

MULTI-POINT

SEL-MIL/H

- KNOT

MIN/MAX REC

SINGLE-POINT

Model:8904

ON-OFF/RESET

MODE-VELOCITY

FREE AREAFLOW

HOLD

AVERAGE

MULTI-POINT

SEL- MPH

- KNOTS

MIN/MAX REC

SINGLE-POINT

Model:8906

1.ON/OFF- RESET. Power ON/OFF.

Press with HOLD key to set non-sleep

mode.

2.HOLD. Freezes the reading.

3.AVERAGE MULTI-POINT.

4.MN/MX RECORD SINGLE POINT

5.SEL:MIL/H (MPH) ,KNOT. unit

selectable .

(Model:8904 & 8906 only)

6.MODE VELOCITY, FREE AREA ,

FLOW. (Model:8904/8906 only)

Air volume measurement .

BUTTON / DISPLAY

FRONT PANEL DESCRIPTION

ON-OFF/RESET

MODE-VELOCITY

FREE AREAFLOW

HOLD

AVERAGE

MULTI-POINT

SEL-MIL/H

- KNOT

MIN/MAX REC

SINGLE-POINT

MIN

mil/h c

AVG

REC

FLOW

km/h c

AREA

m/s

velHold PHKnots

ft/m 2

MAX

16. Primary readout-Numerical display

for Air Velocity/ Air Volume/Free

area digit

17. Secondary readout -Temperature

display or records number.

18. "-" Polarity indicator for negative

temperature.

MIN

mil/h cfm

AVG

REC

FLOW

km/h cms

AREA

m/s

vel Hold PH Knots

ft/m 2

MAX

INDICATORS

19. Knots.

20. Mil/h.

21. Km/h.

(KN)=1850 meters per hour

or 1.15 miles per hour

(Imperial) Miles per hour

(Metric) Km/h Kilometer

per hour

1.vel.

Air velocity measurement.

2.FLOW. Air Flow/Air volume.

3.AREA. Free area default setting.

4.Hold. Freezes the reading.

5.ft/m. Feet per minute.

6.ft . Feet square.(imperial)

7.m .

2meter square.(metric)

8.cfm. Cubic feet per minute.(imperial)

9.cms. Cubic meter per second.(metric)

10.C. Celsius unit.

11.F. Fahrenheit unit.

12.REC. Record and saved.

13.AVG. Average data

14.MIN. Minimum data

15.MAX. Maximum data

B. CONTINUOUS MOVING AVERAGE

1. Turn the power ON .

2. Place sensor in front of air flow

source.

3. Press MIN/MAX record key once.

An "AVG" and "REC" in the lower left

corner of the display to confirm the

meter is in continuous moving average

measurement mode. The display

will update every second.

(See Fig.3)

The meter has the ability to display

continuous moving average for up to

two(2) hours.

1. Press the ON/OFF button to turn the

meter on. Meter will show full display

for initial 5 seconds. (See Fig.1)

2. Unit is ready for use when LCD display

shows "vel" at upper left corner and

temperature at lower right corner.

(See Fig.2)

A. MEASURING AIR VELOCITY

(SINGLE POINT) FEET PER

MINUTE (FPM)

vel

Fig.1 Fig.2

Fig.3

ft/m

AVG

vel

m/s

MIN

mil/h cfm

AVG

REC

FLOW

km/h cms

AREA

m/s

vel Hold PH Knots

ft/m 2

MAX

REC

C. MIN/MAX/AVG READING ON A

SINGLE POINT

1. Power the meter ON.

2. Place sensor in front of air flow

source.

3. Press MIN/MAX REC SINGLE POINT

key. The unit will begin to record

the readings.The meter displays the

average velocity by default.(see Fig.3)

Each press of the MIN/MAX button

cycles the display through:

* Real-time readings.

* MIN velocity.

* MAX velocity.

* Back to AVG velocity.

4. To revert to normal measurement

mode or clear the current MIN/MAX

and average readings, you could turn

off the meter first and then turn it on

again or press and hold MIN/MAX key

until meter beeps twice, then release.

To obtain MIN/MAX/AVG readings on a

single point.

Note: Feet Per Minute (FPM) readings

can be converted to CFM readings

by following below instructions:

1. Press the HOLD button to store

the readings before moving the

meter away from an air flow

sources.

2. Press MODE key to enter area

setting (see page11 for the details

of area setting). After setting, press

MODE key again to convert the

FPM into CFM.

4. Once all measurements have been

recorded, you could

press AVERAGE

key to view the

average air velocity

reading and the

number of points

which are recorded.

vel

Fig.4

Hold

m/s

vel

Fig.4-A

Hold

m/s

vel

Fig.5

Hold

m/s

AVG

1. Turn the meter on and position the

vane at the first point to be measured.

soon as the first measurement is

completed press the HOLD key,(you

will hear a single beep), and release.

The display will show HOLD above

the reading. (See Fig.4)

2. Press the MIN/MAX key,(You will hear

a single beep), and release,(the

display will show a digit 1-8). This

number represents the point number

which has been recorded.(See Fig.4-A)

3. Repeat above procedure until all

desired points have been measured

and recorded. A maximum 8 points may

be recorded at one time.

D. AIR VELOCITY AVERAGE FOR

MULTIPLE POINTS(8904,8906 only)

5. You could press HOLD key to revert to

normal measurement mode

6. To clear multi- point average memory,

press and hold next digit/multi point

average key until unit beeps twice,

then release.

Fig.6

Fig.7

m/s

Fig.8

m/s

ft/m

The default measuring units can be

changed by following the steps below.

The unit should be turned off before

commencing.

E. NON SLEEP MODE (Disable auto

power off)

Power unit off; press ON and HOLD at

the same time and then release ON only.

An "n" appears on the LCD then you can

release the HOLD key. The instrument

will remain on until the OFF button is

pressed.(See Fig.6 )

1. Press and hold the AVERAGE key,

then press the ON/OFF key once to

turn the unit on. When the LCD

displays " ft/m,ms " and " C, F"

realease the AVERAGE key.(Fig.7)

2. To choose the metric units, pressing the

HOLD key. The LCD should display "

m/s, C". (See Fig.8)

F. HOW TO CHANGE THE DEFAULT

SETTING/IMPERIAL TO METRIC

Vice Versa(METRIC TO IMPERIAL)

3. Press the MIN/MAX REC key, the LCD

should display "S" (See Fig.10) .

Then press the HOLD key. The LCD

display 2400 or 1200 (pre-setting).

(If Baud rate change is needed, please

refer to step G.1) (See Fig.11)

4. Press the MIN/MAX REC key again,

the LCD should display "S" again.

(See Fig.10) .Then press the HOLD

key, the LCD will revert to a normal

measurement display. The default

setting is now completed.(See Fig.12)

To choose the imperial units, pressing the

AVERAGE key. The LCD should display

"ft/m, F" (See Fig.9).

ft/m

Fig.9

Fig.10 Fig.11

Fig.12

m/s

vel

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