Manuale d’uso / di manutenzione del prodotto 922 del fabbricante Fluke
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® PN 2683880 November 2006 Rev.1, 12/07 © 2006-2007 Fluke Corporation, All r ights reserved. Printe d in Taiwan. Product specif ications ar e subject to change without notice.
LIMITED WARRANTY AND LIMITATION OF LIABILITY This Fluke product will be free from defects in material and workmanship f or two years from the date of purchase. This warranty does not cover fuses, disposabl e batteries, or damage from accident, neglect, misuse, alteration, contam ination, or abnormal condi- tions of operation or handling.
i Table of Contents Title Page Introduction..................................................................................................1 Safety Informati on and Sy mbols..................................................................2 Contacting Fluke .
922 Users Manual ii Measuring Different ial Pre ssure ................................................................. 12 Measuring Ve locity ..................................................................................... 14 Velocity Me asurem ent .
iii List of Tables Table Title Page 1. International Symbol s ........................................................................... 3 2. Pushbu ttons ......................................................................................... 6 3. Display De scription .
922 Users Manual iv.
v List of Figures Figure Title Page 1. 922 Airflo w Meter ................................................................................. 5 2. Display ................................................................................................. 7 3.
922 Users Manual vi.
1 922 Introduction The Fluke 922 Airflow Meter (“the Meter”) is a handheld instrument that measures differential pressure and calculat es air velocity and air flo w.
922 Users Manual 2 Safety Information and Symbols A W Caution identifies co nditions and actions that may damage the Meter. A W Warning identifies conditions and actions t hat pose hazard(s) to the user. XW Warning To avoid injury, or damage to the Me ter, follow these safety guidelines: • Read the entire Users Manual before using the Meter.
Airflow Meter Safety Information and Symbols 3 International symbols used on the Meter and in the manual are explained in Table 1. Table 1. International Symb ols Symbol Descriptio n Symbol Description W Risk of danger. Imp ortant information. Refer to manual.
922 Users Manual 4 Contacting Fluke To contact Fluke, use one of the following telephone numbers: USA: 1-888-99-FLUKE (1-888-993-585 3) Canada: 1-800-36-FLUKE (1-800-363-58 53) Europe: +31 402-675-200 Japan: +81-3-3434-0181 Singapore: +65-738-5655 Anywhere in the world: +1-425-446-5500 Or visit Fluke’s Web site at: www.
Airflow Meter Pushbutton Functions 5 Pushbutton Functions Figure 1 and Table 2 explain the Meter’s pushbuttons. 1 14 13 12 11 10 9 2 3 4 5 6 7 8 eog02.
922 Users Manual 6 Table 2. Pushbutto ns Pushbutton Functi on A Power button. Press to turn th e Meter on or off. Hold for 5 seconds to display Meter’s firmware versio n. B Activates velocity mode. See “Meas uring Velocity”. C Turns the backl ight on an d off.
Airflow Meter Display 7 Display Figure 2 and Table 3 describe the disp lay. 12 3 5 6 7 10 12 8 4 9 11 eog01a.eps Figure 2. Display.
922 Users Manual 8 Table 3. Display Description A Shift key is in use and secondary menu functionality is engaged B Hold is en gaged C Annunciators showing that sample me mory is being accessed and t .
Airflow Meter Using the Meter 9 Using the Meter Power To turn Meter power on or off, press O Meter power is provided by four AA batteries. To replace the batteries, see “Maintenance”. Measurement Units The Meter supports both Metric and US measurement units.
922 Users Manual 10 Temperature Ambient temperature is displayed on the Mete r as a reference. The temperature can be displayed in either ° C or ° F. See "The Setup Me nu". Secondary Menu Modes Use A with other select pushbuttons to shift to secondary me nu modes and functions: • Press A and then H to access the Clear functions.
Airflow Meter Saving Samples 11 intermittent readings, record maximum and mi nimum readings while you are away or wh en you cannot watch the Meter. To use Min Max mode, press M . The maximum reading appears first. Each subsequent press of M steps through the minimum, average, and live readings, and back to the maximum reading.
922 Users Manual 12 3. Press G , P , V or F to exit calculate mode. If the memory is full (99 samples have been stored), more samples can not be stored. If the user attempts to store another sample, the Meter flashes " Full " and does not save new readings.
Airflow Meter Measuring Differential Pressure 13 eog05.eps Figure 3. Differential Pressure Measurem ent.
922 Users Manual 14 Measuring Velocity The Meter uses standard ambient conditions (temperature =21.1 ° C/70 ° F, barometric pressure = 14.7 psia / 1013 mbar), to approximate actual velocity and flow. Velocity Measurement To measure velocity, do the following: 1.
Airflow Meter Measuring Velocity 15 eog03.eps Figure 4. Pitot Tube C onnection.
922 Users Manual 16 Measuring Flow 1. Press F . 2. The Meter requests the duct shape and size. The Meter stores the last duct shape and size that is entered. If the duct is different than the stored version, press D or E to find the proper duct type for the measurement (rectangular or round).
Airflow Meter The Setup Menu 17 Notes HOLD, SAVE, CALCULATE, SHIFT, MIN MAX, ZERO, and SE TUP UNITS can be used when measuring pressure, velocity and flow. If P or V is pressed before pre ssing I for the final time, the Meter will escape the flow setup process and will not save any of the selections made or values entered.
922 Users Manual 18 3. Press I to store the change. The Meter beep s to signal that the change has been stored. With each press of I , the menu moves to the next parameter. To exit the Setup menu without changing s ubsequent parameters, press P , V , or F .
Airflow Meter Recall 19 3. Press I to clear all samples. The Meter beeps and the display shows 0 samples. 4. To exit (CLEAR) or (CLEAR ALL) without deleting samples, press P , V , or F before pressing I Recall 1. Press either P , V , or F to recall samples for that mode.
922 Users Manual 20 Cleaning Clean only with soap and water. Remove any residue afterwards. Periodically wip e the case with a damp cloth and mild deterge nt. Do not use abrasives or solvents. Replacing the Batteries When the low battery symbol appears ( B ) the meter will not save samples and “bAtt” appears on the display when I is pressed.
Airflow Meter Maintenance 21 eog04.eps Figure 5. Replacing the Batteries.
922 Users Manual 22 Specifications Parameter Rang e Accuracy Resolution Units Displayed Air Pressure ± 4000 Pascal ± 16 in H 2 O ± 400 mm H 2 O ± 40 mbar ± 0.6 PSI ±1% + 1 Pascal ±1% + 0.01 in H 2 O ±1% + 0.1 mm H 2 O ±1% + 0.01 mbar ±1% + 0.
Airflow Meter Specifications 23 Environment al Operating Te mperature 0 ° C to +5 0 ° C Storage Temperature -40 ° C to +60 ° C Temperature Coefficient 0.
922 Users Manual 24 Agency Approvals P Conforms to EU directives ; Conforms to Australian standards Replacement Parts Replacement Part Part Number Battery 1.
Airflow Meter Accessories and Optional Items 25 Accessories and Optional Items Description Item or Part Number Toolpak Mete r Hanging Kit Includes: Magnetic Str ip, 2 Straps (9 inch and 12 inch), 2 La.
922 Users Manual 26.
Un punto importante, dopo l’acquisto del dispositivo (o anche prima di acquisto) è quello di leggere il manuale. Dobbiamo farlo per diversi motivi semplici:
Se non hai ancora comprato il Fluke 922 è un buon momento per familiarizzare con i dati di base del prodotto. Prime consultare le pagine iniziali del manuale d’uso, che si trova al di sopra. Dovresti trovare lì i dati tecnici più importanti del Fluke 922 - in questo modo è possibile verificare se l’apparecchio soddisfa le tue esigenze. Esplorando le pagine segenti del manuali d’uso Fluke 922 imparerai tutte le caratteristiche del prodotto e le informazioni sul suo funzionamento. Le informazioni sul Fluke 922 ti aiuteranno sicuramente a prendere una decisione relativa all’acquisto.
In una situazione in cui hai già il Fluke 922, ma non hai ancora letto il manuale d’uso, dovresti farlo per le ragioni sopra descritte. Saprai quindi se hai correttamente usato le funzioni disponibili, e se hai commesso errori che possono ridurre la durata di vita del Fluke 922.
Tuttavia, uno dei ruoli più importanti per l’utente svolti dal manuale d’uso è quello di aiutare a risolvere i problemi con il Fluke 922. Quasi sempre, ci troverai Troubleshooting, cioè i guasti più frequenti e malfunzionamenti del dispositivo Fluke 922 insieme con le istruzioni su come risolverli. Anche se non si riesci a risolvere il problema, il manuale d’uso ti mostrerà il percorso di ulteriori procedimenti – il contatto con il centro servizio clienti o il servizio più vicino.
