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Klein Tools MM450 User Manual

Klein Tools MM450
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8
FUNCTION BUTTONS
ON/OFF
To Power ON the meter rotate the Function Selector switch
2
from the
OFF setting to any measurement setting. To Power OFF the meter rotate the
Function Selector switch
2
to the OFF setting. By default, the meter will
automatically Power OFF after 5 minutes of inactivity. Reactivate meter by
pressing any button. To deactivate the automatic Power OFF feature, power
the meter ON with the SEL button
10
depressed. When automatic Power
OFF is deactivated, the
symbol will not be visible in the display.
"SEL" (SELECT) BUTTON (FOR SECONDARY FUNCTIONS)
The "SEL" button
10
activates the secondary function for each application
accessible by the function selector switch
2
. For current and voltage, it
toggles between AC and DC. For the other functions, it switches between °F
and °C, between Hz and % Duty-cycle, between Continuity and Resistance,
and between Capacitance and Diode-test. The default function for each
application is printed on the meter in white; the secondary function for each
location is printed on the meter in orange.
"HOLD" (DATA HOLD) BUTTON
Press the "HOLD" button
9
to hold the measurement on the display. Press
again to release the display and return to live measuring.
"RANGE" BUTTON
The meter defaults to auto-ranging measurement mode
. This
automatically determines the most appropriate measurement range for the
testing that is being conducted. To manually force the meter to measure in a
different range, use the "RANGE" button
7
.
1. Press the "RANGE" button
7
to manually select measurement range
(
is deactivated on the LCD). Repeatedly press the "RANGE" button
7
to cycle through the available ranges, stopping once the desired range
is reached.
2. To return to auto-ranging mode, press and hold the "RANGE" button
7
for more than one second ( is reactivated).
"MAX/MIN" BUTTON
When the "MAX/MIN" button
8
is pressed, the meter keeps track of the
minimum and maximum value of the measurement as the meter continues
to take samples. The first press of the "MAX/MIN" button
8
displays the
Max value, the second press displays the Min value.
To return to normal measuring mode, press and hold the "MAX/MIN"
button
8
for more than one second.
BACKLIGHT BUTTON
The meter defaults to Automatic Brightness mode, which adjusts the screen's
brightness based on the ambient lighting conditions detected by the Optical
Sensor
12
Press the Backlight Button
6
to enter manual high brightness mode.
Press Backlight Button
6
again to enter manual low brightness mode. Press the
Backlight Button
6
once more to return to Automatic Brightness mode.
LEAD ALERT LEDs
When the Function Selector switch
2
is rotated to a measurement setting,
the Lead Alert LEDs
11
will illuminate to ensure that the test leads are
inserted into the appropriate jacks. The lights will automatically turn off after
2 minutes. To disable the Lead Alert LEDs
11
, hold the Backlight button
6
and turn the Function Selector switch
2
to any setting other than OFF.
NOTE: Lead Alert function will reactivate by default when the meter powers OFF
or when the Function Selector switch
2
is rotated.
ENGLISH

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Klein Tools MM450 Specifications

General IconGeneral
Product typeDigital multimeter
DC voltage range600 - 600 V
Measuring categoryCAT III 600V
Placement supportedHandheld multimeter
Resistance resolution50 Ω
Resolution (frequency)50 Hz
Temperature measurement range-40 - 1000 °C
Display digits4000 digits
Battery typeAAA
Power sourceBattery
Number of batteries supported2
Weight and Dimensions IconWeight and Dimensions
Depth165 mm
Width80 mm
Height28 mm
Weight258 g

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