Mastech AZ8903, AZ8904, AZ8906 Operation 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

Yes

No

Yes

No

No

Air Flow

Volume

Measurement

1

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 place the meter in the
airstream. Make sure that the
airstream and the sensor
are aligned as shown ( 20
degrees maximum).

b) 3 seconds for the
reading to stabilize .

o

20

o

20

Rear side

2

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

-OF
F/R

ESET

MOD

E-VE

LOC

ITY

FRE

E AREAF

LOW

HOLD

AVER

AGE

MUL

TI-PO

INT

SEL-

MIL/H

­KNOT

MIN/MAX REC

SINGLE-P

OINT

M

IN

m

il

/h

c

AV

G

RE

C

F

L

O

W

k

m

/h

c

AR

E

A

m

/s

ve

l

H

old

P

H

Kno

ts

ft

/m

2

ft

2

m

M

A

X

3

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

ft

2

m

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.

2

6.ft .

Feet square.(imperial)

7.m .

2

meter 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

4

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

5

MIN

mil/h cfm

AVG

REC

FLOW

km/h cms

AREA

m/s

vel Hold PH Knots

ft/m

2

ft

2

m

MAX

REC