Fluke 73 II User Manual

73

Series III Multimeter

Instruction Sheet

Read First: Safety Information

W To avoid damage to the meter, electric shock or injury:

• Never use the meter if the meter or test leads look damaged.

• Be sure the test leads and rotary switch are in the correct

position for the desired measurement.

• Never measure resistance in a circuit when power is applied.

• Never touch the probes to a voltage source when the test

leads are plugged into the 10 A or 300 mA input jack.

• Never use the meter on circuits that exceed 4800 volt-amps.

• Never apply more than the rated voltage between any input

jack and earth ground.

• Be careful when working with voltages above 60 V dc or 30 V
ac rms. Such voltages pose a shock hazard.

• Keep your fingers behind the finger guards on the test probes
when making measurements.

W Warning

To avoid false readings, which could lead to possible
electric shock or personal injury, replace the battery
as soon as the low battery indicator (M) appears.

®

Symbols

W

MAN

T

M

CAT II

PN 1646063 February 2002 (English)

1997, 1998, 2002 Fluke Corporation. All rights reserved. Printed in China.



Caution: Important Information. See instruction sheet.
Manual Range.
Double Insulation.
Low battery. Replace battery.
Overvoltage Installation Category per IEC 61010-1-95.

CAT II instruments protect against transients from
equipment supplied from the fixed installation, e.g., TV,
PC, and household appliances.

Terminals

Amps

Volts, Ohms, Diode Test

FUSED

600V

V

CAT

COM

Common Terminal

hr2f.eps

Milliamps

10A

300
mA

See Specifications for overload protection.

Pushbutton

Use the pushbutton to either select a fixed range or put the meter
in the Automatic Touch Hold mode.

Autorange

The meter defaults to autorange when first turned on.

Manual Range

Manual ranging is available in V ac, V dc, ohms, A ac, and A dc.
The manual range mode and Touch Hold mode are mutually

exclusive. MAN is displayed when the meter is in the manual
range mode.

MAN

Momentary

+

V

_

hr14f.eps

To return to autorange, press R for 1 second or change the
measurement function.

Automatic Touch Hold Mode

W Warning

To avoid electric shock, do not use the Touch Hold
mode to determine if a circuit with high voltage is
dead. The Touch Hold mode will not capture
unstable or noisy readings.

The Touch Hold mode automatically captures and displays stable
readings. Press R for 2 seconds. HOLD is displayed when
the meter is in the Touch Hold mode.

2 seconds

HOLD HOLD

V DC

V V V

+

_

V DC

_

single
beep

HOLD

V DC

+

_

hr3f.eps

When the meter captures a new input, it beeps and a new
reading is displayed.

Note

Stray voltages can produce a new reading.

To exit the Touch Hold mode, press R or change the
measurement function. The Touch Hold mode and manual range
mode are mutually exclusive.

Bar Graph

The bar graph shows readings relative to the full scale value of a
displayed measurement range and indicates polarity.

hr16f.eps

Standby

If the meter is on but is inactive for an hour (20 minutes in diode
test), the screen goes blank and displays selected bar graph
segments.

To resume operation, turn the rotary switch or press R.

AC and DC Voltage

Volts AC Volts DC Millivolts DC

V AC

V

+

Resistance

_

(e)

(K L mL)

+

V DC

V

V

_

+

mV

_

hr4f.eps

Turn off the power and discharge all capacitors. An external
voltage across a component will give invalid resistance readings.

k

+

_

hr6f.eps