Page 1 of 3, Document #2153
187/189 Extended Specifications
©2000 Fluke Corporation
Rev. A-8/00
Accuracy Accuracy Dual Display AC or AC+DC
5
20 Hz- 45 Hz- 1kHz-
Function Range Resolution DC 45 Hz 1 kHz 20 kHz
DC mV 50.000 mV 0.001mV 0.1% +20 2% + 80 0.5% + 40
6% + 40
500.00 mV 0.01 mV 0.03% + 2 2% + 80 0.5% + 40
3000.0 mV 0.1 mV 0.025% + 5 2% + 80 0.5% + 40
DC V 5.0000V 0.0001V 0.025% + 10
3
2% + 80 0.5% + 40 2% + 40
50.000V 0.001V 0.03% + 3
3
2% + 80 0.5% + 40
500.00V 0.01V 0.1% + 2
3
2% + 80 0.5% + 40 Not specified
1000.0V 0.1V 0.1% + 2
3
2% + 80 0.5% + 40 Not specified
DC µA 500.00 µA 0.01 µA 0.25% + 20 1% + 20 1% + 20 2% + 40
5.000 µA0.1 µA 0.25% + 2 1% + 10 0.75% + 10 2% + 40
DC mA 50.000 mA 0.001 mA 0.15% + 10 1% + 20 0.75% + 20 2% + 40
400.00 mA 0.01 mA 0.15% + 2 1% + 10 1% + 10 3% + 40
DC A 5.0000A 0.0001A 0.5% + 10 2% + 20 2% + 20 6% + 40
10.000A
4
0.001A 0.5% + 2 1.5% + 10 1.5% + 10 5% + 40
Detailed Specifications
Accuracy is specified for a period of one year after calibration, at 18°C to 28°C (64°F to 82°F) with
relative humidity to 90%. Accuracy specifications are given as ±([% of reading] + [number of least
significant digits])
Accuracy
45 Hz- 20 Hz- 1 kHz- 10 kHz- 20 kHz-
Function Range
Resolution
1 kHz 45 Hz 10 kHz 20 kHz 100 kHz
AC mV
1,2
50,000mV 0.001mV 0.4% + 40 2% + 80 5% + 40 5.5% + 40 15% + 40
500.00 mV 0.01 mV 0.4% + 40 2% + 80 5% + 40 5.5% + 40 8% + 40
3000.0 mV 0.1 mV 0.4% + 40 2% + 80 0.4% + 40 1.5% + 40 8% + 40
AC V
1,2
5.0000V 0.0001V 0.4% + 40 2% + 80 0.4% + 40 1.5% + 40 8% + 40
50.000V 0.001V 0.4% + 40 2% + 80 0.4% + 40 1.5% + 40 8% + 40
500.00V 0.01V 0.4% + 40 2% + 80 0.4% + 40
Not specified Not specified
1000.0V 0.1V 0.4% + 40 2% + 80 0.4% + 40
Not specified Not specified
dBV -56 to -6 0.01 dB 0.1 dB 0.2 dB 0.5 dB 0.5 dB 1.4 dB
-6 to +34 0.01 dB 0.1 dB 0.2 dB 0.1 dB 0.2 dB 0.8 dB
+34 to +60 0.01 dB 0.1 dB 0.2 dB 0.1 dB
Not specified Not specified
Fluke 187/189
True-rms Digital Multimeter
Extended Specifications
Nominal Specifications
Function Ranges/Description
DC Voltage 0 to 1000V
DC Current 0 to 10A (20A for 30 seconds)
AC Voltage, True-rms 2.5 mV to 1000V - 100 kHz bandwidth
AC Current, True-rms 25 µA to 10A (20A for 30 seconds)
Resistance 0 to 500 Mohms
Conductance 0 to 500 Nanosiemens
Capacitance 0.001 nF to 50 mF
Diode Test 3.1V
Temperature -200°C to 1350°C (-328°F to 2462°F)
Frequency 0.5 Hz to 1000 kHz
Accuracy (Basic DC V) 0.025%
(Basic AC V) 0.4%
Features
Feature Description
Dual Displays 50,000 count primary display
5,000 count secondary display
Backlight with 2 Bright white backlight for clear readings
brightness selections in poorly lighted areas
Fast Autorange Meter automatically selects best range -
instantly
AC+DC True RMS, ac Choices for AC only, AC and DC dual
rms specified to 100 kHz display, or AC+DC readings
dBm, dBV User selectable impedance references
for dBm
AutoHOLD
Holds readings on display
Continuity/Open Test Beeper sounds for Ohms readings below
threshold or for momentary
open circuit indication
Fast Bar Graph 51 Segments for peaking and nulling
Duty Cycle/Pulse Width Measure time a signal is on or off in %
or milliseconds
MIN MAX/Fast MIN MAX Record Maximum, Minimum, and Average
with elapsed and values. Real Time for MAX or MIN, elapsed
Real Time Stamp time for AVG.
Fast MIN MAX captures peaks to 250 µsec.
Closed Case Calibration No internal adjustments needed
Battery/Fuse Battery or fuse replacement without
Access Door voiding calibration
Hi-Impact Overmold Case Integrated Protective Holster provides
superior impact protection for your meter
Accuracy
45 Hz- 20 Hz- 1 kHz- 20 kHz-
Function Range
Resolution
1 kHz 45 Hz 20 kHz 100 kHz
AC µA 500.00 µA 0.01 µA 0.75% + 20 1% + 20 0.75% + 20 6% + 40
5000.0 µA0.1 µA 0.75% + 5 1% + 5 0.75% + 10 2% + 40
AC mA 50.000 mA 0.001 mA 0.75% + 20 1% + 20 0.75% + 20 9% + 40
400.00 mA 0.01 mA 0.75% + 5 1% + 5 1.5% + 10 4% + 40
AC A 5.0000A 0.0001A 1.5% + 20 1.5% + 20 6% + 40 Not specified
10.000A
4
0.001A 1.5% + 5 1.5% + 5 5% + 10 Not specified
1
For the 5,000 count mode, divide the number of least significant digits (counts) by 10.
2
A residual reading of 8 to 180 digits with leads shorted, will not affect stated
accuracy above 5% of range.
3
20 counts in dual display DC or AC + DC
4
10A continuous up to 35°C, less than 10 minutes 35° to 55°. 20A overload for
30 seconds maximum
5
See AC conversion notes for AC mV and V.
Above specifications are subject to change without notice.
To Next Page
Need help?
General
