Fluke 922 User Manual

®

922

Airflow Meter

Users Manual

PN 2683880

November 2006 Rev.1, 12/07

© 2006-2007 Fluke Corporation, All rights reserved. Printed in Taiwan. Product specifications are subject to change without notice. All product names are trademarks of their respective companies.

LIMITED WARRANTY AND LIMITATION OF LIABILITY

This Fluke product will be free from defects in material and workmanship for two years from the date of purchase. This warranty does not cover fuses, disposable batteries, or damage from accident, neglect, misuse, alteration, contamination, or abnormal conditions of operation or handling. Resellers are not authorized to extend any other warranty on Fluke’s behalf. To obtain service during the warranty period, contact your nearest Fluke authorized service center to obtain return authorization information, then send the product to that Service Center with a description of the problem.

THIS WARRANTY IS YOUR ONLY REMEDY. NO OTHER WARRANTIES, SUCH AS FITNESS FOR A PARTICULAR PURPOSE, ARE EXPRESSED OR IMPLIED. FLUKE IS NOT LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL OR CONSEQUENTIAL DAMAGES OR LOSSES, ARISING FROM ANY CAUSE OR THEORY. Since some states or countries do not allow the exclusion or limitation of an implied warranty or of incidental or consequential damages, this limitation of liability may not apply to you.

Fluke Corporation	Fluke Europe B.V.
P.O. Box 9090	P.O. Box 1186
Everett, WA 98206-9090	5602 BD Eindhoven
U.S.A.	The Netherlands

11/99

	Table of Contents
Title	Page
Introduction..................................................................................................	1
Safety Information and Symbols..................................................................	2
Contacting Fluke .........................................................................................	4
Pushbutton Functions..................................................................................	5
Display ........................................................................................................	7
Using the Meter ...........................................................................................	9
Power ......................................................................................................	9
Measurement Units..................................................................................	9
Backlight ..................................................................................................	9
Automatic Power Off................................................................................	9
Temperature ............................................................................................	10
Secondary Menu Modes ..........................................................................	10
Zero .........................................................................................................	10
Min Max Avg ............................................................................................	10
Hold .........................................................................................................	11
Saving Samples ..........................................................................................	11
i

922

Users Manual

Measuring Differential Pressure .................................................................	12
Measuring Velocity .....................................................................................	14
Velocity Measurement ............................................................................	14
Measuring Flow ..........................................................................................	16
The Setup Menu .........................................................................................	17
Clearing Sample Data ................................................................................	18
Recall .........................................................................................................	19
Maintenance...............................................................................................	19
Cleaning..................................................................................................	20
Replacing the Batteries...........................................................................	20
Specifications .............................................................................................	22
Agency Approvals ...................................................................................	24
Replacement Parts .....................................................................................	24
Accessories and Optional Items .................................................................	25

ii

		List of Tables
Table	Title	Page
1.	International Symbols...........................................................................	3
2.	Pushbuttons .........................................................................................	6
3.	Display Description ..............................................................................	8

iii

922

Users Manual

iv

			List of Figures
Figure		Title	Page
1.	922 Airflow Meter .................................................................................		5
2.	Display .................................................................................................		7
3.	Differential Pressure Measurement		...................................................... 13
4.	Pitot Tube Connection..........................................................................		15
5.	Replacing the Batteries. .......................................................................		21

v

922

Users Manual

vi

922

Introduction

The Fluke 922 Airflow Meter (“the Meter”) is a handheld instrument that measures differential pressure and calculates air velocity and air flow.

The Meter ships with the following items:

•Holster

•Carrying case

•Tubing and tubing strap

•Four AA Batteries (installed)

•Users Manual

•Wrist Strap

1

922

Users Manual

Safety Information and Symbols

A WCaution identifies conditions and actions that may damage the Meter. A WWarning identifies conditions and actions that pose hazard(s) to the user.

XWWarning

To avoid injury, or damage to the Meter, follow these safety guidelines:

•Read the entire Users Manual before using the Meter.

•Use the Meter only as described in the Users Manual or the protection provided by the meter may be impaired.

•Inspect the Meter before use. Do not use it if it appears damaged.

•The Meter contains no user-serviceable parts. Do not open the Meter. For service, the Meter must be sent to Fluke. See “Contacting Fluke”.

•Have the Meter serviced only by qualified service personnel.

•Adhere to local and national safety codes. Individual protective equipment must be used to prevent injury.

WCaution

To avoid possible damage to the Meter, avoid using the Meter in an excessively dirty or dusty atmosphere. Excessive particle intake can damage the Meter.

2

Airflow Meter

Safety Information and Symbols

International symbols used on the Meter and in the manual are explained in Table 1.

Table 1. International Symbols

Symbol	Description	Symbol	Description
W	Risk of danger. Important	v=	Recycling information
	information. Refer to manual.
M	Battery	;	Conforms to Australian standards
	Conforms to EU directives	~	Do not dispose of this product as unsorted
P			municipal waste. Contact Fluke or a
			qualified recycler for disposal.

3