Fluke 12 Manuale utente
®
PN 2063508
January2003Rev.1, 9/04
© 2003-2004 Fluke Corporation. All rights reserved. Printed in China.
All product names are trademarks of their respective companies.
12
Multimeter
Users Manual
i
Table of Contents
Title Page
READ FIRST: SAFETY INFORMATION .................................................... 1
SYMBOLS .................................................................................................. 2
DISPLAY .................................................................................................... 3
OPERATING FEATURES .......................................................................... 4
STANDBY MODE ....................................................................................... 5
INPUT RANGES......................................................................................... 5
Autoranging............................................................................................. 6
Manually Selecting a Range.................................................................... 6
MEASURING VOLTAGE ............................................................................ 7
TESTING CONTINUITY AND MEASURING RESISTANCE ...................... 9
TESTING DIODES ..................................................................................... 11
VCHEK AND HOW TO USE IT................................................................... 13
DISABLING iWITH FUNCTION LOCK ............................................. 14
MEASURING CAPACITANCE.................................................................... 15
USING MIN MAX FUNCTIONS .................................................................. 17
Recording Minimum and Maximum Readings......................................... 17
12 Multimeter
Users Manual
ii
Recording Minimum and Maximum Reading with Elapsed Time............. 19
Capturing Continuity Intermittents with Continuity Capture.................. 21
TURNING BEEPER OFF............................................................................ 23
MAINTENANCE.......................................................................................... 23
NReplacing the Battery........................................................................ 23
Replacing the Test Leads........................................................................ 23
Service and Parts.................................................................................... 24
Accessories............................................................................................. 24
SPECIFICATIONS ...................................................................................... 24
1
READ FIRST: SAFETY INFORMATION
This meter has been designed and tested in accordance with IEC Publication 1010. To
ensure that the meter is used safely, follow all safety and operating instructions in this
manual. If the meter is not used as described in this manual, the safety features of the
meter might be impaired.
WWarning
To avoid false readings, which could lead to possible electric shock or personal
injury, replace the battery as soon as the battery indicator (N) appears.
•Do not use the meter if the meter or test leads look damaged, or if you suspect
that the meter is not operating properly.
•Turn off power to the circuit under test before cutting, unsoldering, or breaking the
circuit. Small amounts of current can be dangerous.
•Do not apply more than 600 V rms between a terminal and earth ground.
•Use caution when working above 60 V dc or 30 V ac rms. Such voltages pose a
shock hazard.
•When using the probes, keep your fingers behind the finger guards on the probes.
•Disconnect the live test lead before disconnecting the common test lead.
12 Multimeter
Users Manual
2
SYMBOLS
The following international electrical symbols are used in this manual:
W Important Safety Information in Manual
∅Not Applicable to Identified Model
BAC
FDC
GDiode
ECapacitor
JGround
TDouble Insulation
12 Multimeter
DISPLAY
3
DISPLAY
Figure 1. Display
12 Multimeter
Users Manual
4
OPERATING FEATURES
Figure 2. Operating Features
12 Multimeter
STANDBY MODE
5
STANDBY MODE
In standby mode, the display goes blank to preserve battery life. The meter beeps and
enters Standby if it is ON but inactive for more than 45 minutes. Press any pushbutton
to resume operation. Standby is not allowed if the meter is in the MIN MAX mode.
INPUT RANGES
The input range determines the highest value the meter will measure. Most functions
have more than one range (see SPECIFICATIONS). If the range is too low, the display
shows OL (overload). If the range is too high, the display will show fewer digits of
resolution.
12 Multimeter
Users Manual
6
Autoranging
The meter defaults to autorange when you turn it on. In autorange, the meter selects
the range automatically.
Manually Selecting a Range
The meter also has a manual range mode. In manual range, you select and lock the
meter in a range. To manually select a range:
1. Press [V]. The meter is locked in the range it is in, and Vis displayed. In manual
range, iis disabled.
2. Press [V] to step through the ranges. NOTE: The 4000 mV range, which can only
be entered in manual range, is convenient when using accessories.
3. To return to autorange, press [V] for 2 seconds (until Vis no longer displayed), or
change the measurement function.
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