FLUKE-87-5-EX Fluke Electronics, FLUKE-87-5-EX Datasheet - Page 25

• Manufacturer Part Number: FLUKE-87-5-EX
• Description: MULTIMETER INDUSTRIAL TRU RMS
• Manufacturer: Fluke Electronics
• Series: 8xr
• Type: Digital (DMM)r

Specifications of FLUKE-87-5-EX

• Includes: Battery, Clips, Temperature Probe, Test Leads
• Style: Handheld
• Display Digits: 4.5
• Display Type: LCD, Bar Graph
• Display Count: 20000
• Function: Voltage, Current, Resistance, Capacitance, Temperature, Frequency
• Functions, Extra: Continuity, Diode Test
• Features: Auto Off, Backlight, Clips, Hold, Min/Max/Ave
• Ranging: Auto/Manual
• Response: True RMS
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 2547226

Zero Input Behavior of True-rms Meters
True-rms meters accurately measure distorted waveforms,
but when the input leads are shorted together in the AC
functions, the meter displays a residual reading between 1
and 30 counts. When the test leads are open, the display
readings may fluctuate due to interference. These offset
readings are normal. They do not affect the Meter’s AC
measurement accuracy over the specified measurement
ranges.
Unspecified input levels are:
Low Pass Filter
The Meter is equipped with an ac low pass filter. When
measuring ac voltage or ac frequency, press A to
activate the low pass filter mode (K). The Meter continues
measuring in the chosen ac mode, but now the signal
diverts through a filter that blocks unwanted voltages above
1 kHz, refer to Figure 3. The lower frequency voltages pass
with reduced accuracy to the measurement below 1 kHz.
The low pass filter can improve measurement performance
on composite sine waves that are typically generated by
inverters and variable frequency motor drives.
AC voltage: below 3 % of 600 mV AC, or 18 mV AC
AC current: below 3 % of 60 mA AC, or 1.8 mA AC
AC current: below 3 % of 600 A AC, or 18 A AC
To avoid possible electric shock or personal
injury, do not use the Low Pass Filter option
to verify the presence of hazardous voltages.
Voltages greater than what is indicated may
be present. First, make a voltage measure-
ment without the filter to detect the possible
presence of hazardous voltage. Then, select
the filter function.
In Low Pass Mode, the Meter goes to manual
mode. Select ranges by pressing the RANGE
button. Autoranging is not available in Low Pass
Mode.
100 Hz
1 kHz
Figure 3. Low Pass Filter
XWWarning
Note
Making Measurements
True-rms Multimeter
aom11f.eps
17