General WDCFM8912 Bedienungsanleitung

WDCFM8912

USER’S MANUAL

DIGITAL AIR FLOW METER WITH

CFM, BTU, TEMP, HUMIDITY, DP, FPM,

MPH, KPH, MPS, KNOTS & WET BULB

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 1

99 Washington Street

Melrose, MA 02176

Phone 781-665-1400

Toll Free 1-800-517-8431

Visit us at www.TestEquipmentDepot.com

INTRODUCTION

Thank you for purchasing this digital Anemo-Psychrometer.

This unique meter is designed with 7 H.V.A.C &R that must have

parameters in 1. The meter is designed as battery operated for

Humidity, Air Temp., Dew Point, Wet Bulb, Air Velocity, Air Volume

and BTU.

The sensor is built in the remote fan and is specially protected by

tunable cap. While in operation, please turn on the cap to get

accurate temperature and humidity readings.

The psychrometer is a micro processor based design. A must

device for HVAC engineers use. No need to whirl the meter or refer

to charts. Easy to get wet bulb, dew point and BTU measurements

quickly!

FEATURES:

• Tunable cap to protect sensor

• Big LCD digit display

• Professional remote vane

• Metric & Imperial selectable

• Handheld size, easy to carry

• Low battery indication

• Fast response & Accurate reading

• Tripod mountable for long time use

• Dew Point calculated in seconds

• Wet Bulb calculated in seconds

• Microprocessor circuitry for reliability

• Sleep and non-sleep selectable

• Powered by 4 “AAA” batteries or 9VDC adaptor

• Back light for dark places

MATERIAL SUPPLIED

THIS PACKAGE CONTAINS:

• The meter

• Remote vane

• Battery 4 “AAA”

• Operation manual

• Hard carry case

OPTIONAL ACCESSORY:

• ASFT KIT includes RS232 cable & CD

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 2

REMINDER

IMPORTANT:

1. Rotate the cover before measurement to

ensure the measured data is correct.

2. The fan and meter are sold as a kit and

are calibrated together.

When you need to replace the fan,

please see page 11 for details on

fan replacement.

CONTROLS AND INDICATORS LCD DISPLAY

LCD DISPLAY

KEY PAD

1. Power: O

- Turn on the meter with auto-sleep mode.

- Turn off the meter at any mode.

- When the meter is off, pressing Omore than two sec. to

enter units selection.

2. MODE:

- Pressing to select different modes.

Temp. DP WB RH Velocity.

- Pressing longer to select VOL and CAP.

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 3

3. ENTER:

- To confirm the setting & calibration.

4. Mx/Mn/Up

Mx/Mn:

- Pressing to view MAX/MIN/AV value.

- Press to select the value of each digit in cycle.

5. REC/START:

- To start measuring volume or capacity without waiting.

6. HOLD/Down

HOLD:

- In basic modes pressing this key to hold the current reading,

then pressing this key again to unlock the holding.

- Pressing to select the setting digit.

7. Power +

Mx/Mn :

- When the meter is off, pressing more than two sec. to enter

non-sleep mode.

8. Power +

Mx/Mn +

HOLD:

- Pressing more than two seconds to enter RH calibration mode.

9. ENTER +

HOLD:

- Pressing to turn on/off the backlight.

POWER ON/OFF & UNIT SELECTION

Press Oto turn on the meter with auto-sleep mode. Press again

to turn off the meter at any mode.

When the meter is off, pressing Omore than two seconds to enter

units selection mode.

When in unit selection mode, press

Mx/Mn or

HOLD to select the

unit then, press

ENTER

to save and meter will be powered on

automatically.

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 4

BASIC MEASUREMENT

Basic measured parameters of this model:

BASIC MEASUREMENTS

• Air temp.

• Humidity

• Dew Point

• Wet Bulb

• Air Velocity

EXTENDED MEASUREMENTS

• Air Volume

• Sum of Volume

• Capacity

• Sum of Capacity

When powered on, the air temperature is the default value to show

on the LCD. To review the other basic parameters, just press the

MODE

key then each parameter will be displayed in turn.

While in basic mode, press

MODE

for over 2 seconds to enter extend

measurement mode. You can also press mode key to switch

between volume and capacity.

MAX, MIN & AVG.

When the meter is powered on, air temp., dew-point, WBT, humidity

& velocity is temporarily saved in meter, so, to press

Mx/Mn could

view the average value minimum value and maximum value in

turns. Press

Mx/Mn again to back to normal mode. The data will be

re-counted once the meter is powered off and turned on again.

When in Max/Min/Avg

MODE

, press the

MODE

key to display the

parameters you need. (Fig. A, Fig. B)

(Fig. A) (Fig. B)

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 5

AIR VOLUME: OUTLET SI E

While in normal

MODE

, long pressing

MODE

key to enter air volume

mode.

To measure the volume, the outlet size needs to be input first.

There are three choices to enter the size:

• Length & Width:

This is the default choice. Press

HOLD key to select the setting

digit first, then press

Mx/Mn key to select the appropriate value

(0-9). When selecting the value, the value will show from 0 to 9 in

cycle. After entering the length, short press

ENTER

to enter width

setting. Repeat the procedure of length setting, then short press

ENTER

again to finish the size setting and enter next step. (Fig. C)

• Diameter:

While in default outlet setting mode (length), press the

ENTER

key

for over two seconds to choose the diameter setting. Press

HOLD KEY to select the setting digit first, then press

Mx/Mn key

to select the appropriate value (0-9)

After selection, short press enter again to finish the size setting

and enter next step. (Fig. D)

• Area:

While in diameter setting mode, press the

ENTER

key for over two

seconds to enter the area setting.

Press

HOLD KEY to select the setting digit first, then press

Mx/Mn

key to select the appropriate value (0-9)

• After selection, short press

ENTER

again to finish the size setting

and enter next step. (Fig. E)

(Fig. D) (Fig. E)

NOTE: Refer to pa e 9 for the ran e of each size input mode.

AIR VOLUME: MEASUREMENT

After short pressing

ENTER

to finish and leave size setting, there are

20 second waiting time for you to put the vane to the grill.

During the 20 second waiting time, the count down number

(Fig. C)

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 6

displayed on top left corner and

meter also beeps when time is

up. (Fig. F)

If no need to wait for 20

seconds, just press

REC

START

key to start measuring the

volume right away.

(Fig. F)

After starting measuring the volume, the meter will automatically

count the volume for 60 seconds to give a average value. (Fig. )

During this 60 second time, the vane should move along the whole

outlet to cover each area so the measured data could be more

accurate. The count down number displayed on the top-Ieft corner

as a reminder and meter also beeps when 60 seconds is up.

After time is up, 60 seconds average volume will display on the

LCD as Fig H.

(Fig. ) (Fig. H)

If there are more than one outlet, you could press

ENTER

key again

to repeat the procedure from outlet size input. You could measure

outlet as many times as you need.

After measuring more than one outlet volume, you could press

Mx/Mn key to review the sum of all outlets. Pressing or

HOLD to

review the last outlet volume.

CAPACITY: OUTLET SI E

While in normal mode, long pressing

MODE

to enter air volume, then

short press

MODE

to enter capacity mode. To measure the capacity,

put the vane on the Inlet, then press

ENTER

to count the 60 second

average Temp. & RH% ( Fig. I) countdown will show on left-top

corner of LCD and meter beeps after 60 second is up. Then, the

meter enters outlet size setting automatically. (Note 1)

There are three choice to enter the size:

• Length & Width:

This is the default choice. Press

HOLD key to select the setting

digit first, then press

Mx/Mn key to select the appropriate value

(0-9). When select the value, the value will show from 0 to 9 in

cycle. After entering length, short press

ENTER

to enter width

setting. Repeat the procedure of length setting, then short press

ENTER

again to finish the size setting and enter next step. (Flg. J)

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 7

• Diameter:

While in default outlet setting mode (length), pressing

ENTER

key

for over two seconds to choose diameter setting. Press

HOLD key

to select the setting digit first, then press

Mx/Mn key to select the

appropriate value (0-9)

(Fig. I) (Fig. J)

• Area:

While in diameter setting mode, pressing

ENTER

key for over two

seconds to enter area setting. Press

HOLD key to select the

setting digit first, then press

Mx/Mn key to select the appropriate

value (0-9)

After selection, short press

ENTER

again to finish the size setting

and enter next step. (Fig. L)

(Fig. K) (Fig. L)

CAPACITY: MEASUREMENT

After short pressing

ENTER

to finish and leave size setting, there are

90 or 20 second (note 1) waiting time for you to put the vane to the

grill.

During above waiting time, the count down number displayed on

top-left corner and meter also beeps when time is up. (Fig. M)

If no need to wait for 90 or 20 seconds, just press

REC

START

key

to start measuring the capacity right away.

Note 1: If you have many outlets to

measure, while you start to measure

the second one, the waiting time

will adjust to 20 sec automatically.

90 sec. is the buffer for sensor to

stable. No matter in inlet or outlet,

suggest to move the vane along the

grill to get accurate values. (Fig. M)

After starting measuring the capacity, the meter will automatically

count the capacity for 60 seconds to give an average value. (Fig. N)

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 8

During this 60 second time, the vane should move along the whole

outlet to cover each area so the measured data could be more

accurate. The count down number displayed on the top-left corner

as a reminder and meter also beeps when 60 seconds is up.

After time is up, 60 seconds average volume will display on the

LCD as Fig O.

(Fig. N) (Fig. 0)

If there are more than one outlet, you could press

ENTER

key again

to repeat the procedure from outlet size input. You could measure

outlet as many as you need.

After measuring more than one outlet volume, you could press

Mx/Mn key to review the sum of all outlets. Pressing

HOLD key to

review the last outlet capacity.

If you would like to measure more than 1 inlet, please wait for 10

minutes and allow the humidity sensor to return to the room

humidity or help it by home ventilation.

LOW-BATTERY

Two level low battery indication:

• Level 1: Battery indicator will flash when at level 1. ln this

situation, the meter will work normal however users

should prepare new batteries.

• Level 2: Battery indicator will always display on the LCD while at

level 2. In this situation, users need to change batteries

immediately.

1. Open the battery cover on the rear side.

2. Remove the expired batteries.

3. Insert new “AAA” batteries and make sure the batteries are

inserted with correct polarity, replace the cover.

AC TO DC ADAPTOR

The compatible AC to DC adaptor is 9V and at least 200mA.

AVAILABLE SI E RANGE

Please refer to below input size range. Please be reminded that in

metric L/W/D, the value after decal is not selectable.

L/W/D AREA

cm 000.0-999.0 00000-99999

inch 000.0-999.9 00000-99999

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 9

RS232 SOFTWARE

SOFTWARE

We have compatible software and cable which is design for the

meter, please contact your supplier for details.

INTERFACE OF RS232

A. 9600 bps, 8 data bits, no parity.

B. Format: Tx. ASCII code by every sec. while meter is on

VXXX.XMPS(FTM):TXXX.XC(F):HXX.X%:

dXXX.XC(F):wXXX.XC(F):

vXXXXX.XCMM(CFM):

UXXXXX.XKW(BTU)

Where: The 1" value is velocity, the 2nd value is Air temp., the 3"

value is Humidity, the 4th value is Dew Point, the 5th value is Wet

bulb, the 6th value is AIR Volume, the 7th value is Capacity. The x

here means one of {0|1|2||9|-}

C. Format for error value:

E01 Probe is not connected; E02 Under flow;

E03 Over flow. See more in page The unit for error code is Nul.

EX:

V010.5MPS: TE02Nul: H66. 7%: dE04Nu:wE04Nul:v00020.5CMM.

TROUBLESHOOTING

1. Power on but no display

a) Make sure the time of pressing key is more than 0.1 second.

b) Check that the batteries are in place and in good contact with

correct polarity.

c) Replace a new battery and try again.

d) Remove the battery for one minute and put back again.

2. Display disappear

a) Check whether the low battery indicator was displayed before

Display faded, if yes, replace with new batteries.

b) Turn on the meter by pressing O+

Mx/Mn key to disable

auto power off function for longtime using.

3. E 1

a) The probe is disconnected or damaged.

4. E 2

a) The value is underflow.

5. E 3

a) The value is overflow.

4. E 4

a) The original data that is relative to this value error.

5. E 5

a) Out of meter display range.

WDCFM8912 Manual f nal2F-062708:Layout 1 6/27/08 10:55 AM Page 10

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