Omega Products HHF92A Installation Manual

HHF92A

Digital Anemometer

M3665/1200

A. MEASURING AIR VELOCITY (SINGLE POINT)

FEET PER MINUTE (FPM)

Press the ON/OFF button and turn meter on. Meter will

full display when first powered on.

2. Unit is ready for use when LCD display shows “vel” at upper left comer and temperature at lower right comer.

B. CONTINUOUS MOVING AVERAGE The

meters displays continuous moving average for up to two ‘(2) hours.

1. Power unit on.

2. Place sensor in front of air flow source.

3. Press

MIN/MAX

record key and unit will begin to display moving average. The Meter will

record the reading every second.

4. Press HOLD prior to moving instrument away from air flow source to store

show

rz;.

dings.

MIN/MAX/AVG

c. To obtain

MIN/MAX/AVG readings on a single point.

READING ON A

SINGLE

POINT

1. Power unit on.

2. Place sensor in front of air flow source.

3. Press

MR@lAX REC SINGLE POINT’ key. The unit will begin to record readings.

4. Press HOLD prior to moving instrument away from air flow source to store readings. a). Press b). Press c). Press d). Press e).

MIN/MAX

MIN/MAX MIN/MAX MIN/MAX

.Press

MIN/MAX key again to display

5. To clear the current

MN/MAX

key until unit beeps twice, then release.

D. AIR VELOCITY AVERAGE

key once the screen displays AVG velocity readings under

key again AVG disappears. key again to display key again to display MAX velocity readings.

MIN/MAX

average readings, turn off the power or press and hold

FOi

MULTIPLE

MXN

velocity readings side by

currentvelocity.

POINTS

REC.

1. Power the unit on and position the vane at the first point to be measured.

2. As

;soon

as the first measurement is completed press the HOLD key until you hear a single

beep, then release. The display will show Hold above the reading.

3. Press the

MWMAX

key, When you will hear a single beep release the button. The

display

will show a digit (l-8). This number represents the point that is being recorded.

4. Repeat this process until all desired points have been measured and recorded,

Amaximum

of 8 points may be recorded at one time.

5. Once all measurements have been recorded press AVERAGE key. The unit will display the average air velocity reading and number of points measured.

E. NON SLEEP MODE

(BYPASS AUTO POWER

1, Power unit off.

QFF)

. .

2. Press ON and HOLD at the same time and then release ON only. can

3. An “n” appears on the LCD then

release the HOLD key. The instrument will remain

an until the OFF button is pressed.

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CHANGING THE DEFAULT

SEITlNG/IMPERlAL

The default setting for the measuring unit of air velocity is temperature is steps:

1 .

Press ON and AVERAGE at

Release ON first, then average. A LCD will show

“F.

You can change the measuring units to

thesame time.

SmalLprinting

TO METRIC

feet/n&t.

meter&c

and the unit of

and

“ft/m”(default) on the

“C

by following these

i.-..

upper right comer and an “OF” on the lower right comer. a). Press HOLD key to change the measuring units to metric system; press AVERAGE key

for imperial measuring units.

b). Press

MIN/MAX

REC key and an

“9

will show on the LCD. Press HOLD to confirm and

save the changed value. At this time, the baud rate “2400” (default appears on the screen

t,!’

‘..

. ,

,’

tobefollowedbySteplforchangingRS232output(ifnecessaxy).

. .

G. AUTO POWER OFF

w ill

The

un it

turn off automatically after

;”

:‘,,

. , . .

minutes to save the battery. This will be preceded

_f’.

by 3 beeps. Press the ON key and the unit will resume operation.

H. MEASURING

ft./m,

MPH, KNOTS,

+’

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“

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“’

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In imperial:

mil/h

1. Press the knots in turn.

._.

ft./min

to SELMIL/H-KNOT Key and the reading will change from

.’

In metric:

2. Press the

SEL:MIL/H.KNOT

tum.

DIRECT

MEASURlNG

Key and the reading will change from m/s to km/h to knots in

OF AIR

FLOW (SINGLE

POINT).CFM

’

Air Velocity measurement is calculated by multiplying the air velocity readings by the free area dimensions. Free area is published by the grill and register manufacturer you are servicing. You must first determine the free area of the air source before entering it

’

into the meter.

Power unit on

2. Press MODE once (you will hear one beep). Meter will display “AREA” in upper case lettering and “1.111

”

will appear.The first digit will

be flashing

3. Press the HOLD key to increase the number.

Press the AVERAGE key to advance to next number. Follow Step 3 and repeat.

5. Press the MODE key once all digits have been entered. The word

“flow”will

appear.

The meter is now ready to measure air flow

(CFM).

To clear

memory of current multi

point

average readings, press and hold AVERAGE key until unit beeps twice, then release. Unit must

velocity/FPM mode in order to clear current average readings.

be in

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