Ac Voltage Specifications (Models 85 And 87); Ac Voltage Specifications (Model 83); Dc Voltage, Resistance, And Conductance Specifications - Fluke 80 SERIES III Service Information

AC Voltage Specifications (Models 85 and 87)

Function Range
K
3
400.0 mV
4.000 V
40.00 V
400.0 V
1000 V
For extended use at high RH, change the 400 mV and 4.0 V ac accuracy specification to ± (1.5 % + 4 counts) for 45
1.
Hz to 1 kHz and ± (3.0 % + 25 counts) for 5 kHz to 20 kHz.
2. Below 10 % of range, add 6 counts.
3. Models 85 and 87 are true rms responding Meters. When the input leads are shorted together in the ac functions,
the Meters display a reading (typically <25 counts) caused by internal amplifier noise. The accuracy on Models 85
and 87 is not significantly affected by this internal offset when measuring inputs that are within 5 % to 100 % of the
selected range. When the rms value of the two values (5 % of range and internal offset) is calculated, the effect is
minimal as shown in the following example where 20.0 = 5 % of 400 mV range, and 2.5 is the internal offset: RMS =
2 2
SQRT[(20.0) + (2.5) ] = 20.16. If you use the REL function to zero the display when using the ac functions, a
constant error that is equal to the internal offset will result.
4. Frequency range: 1 kHz to 2.5 kHz.
5. Below 10 % of range, add 16 counts.

AC Voltage Specifications (Model 83)

Function Range
K
2
400.0 mV
4.000 V
40.00 V
400.0 V
1000 V
For extended use at high RH, change the 400 mV and 4.0 V ac accuracy specification to ± (1.5 % + 4 counts) for
1.
45 Hz to 1 kHz and ± (3.0 % + 25 counts) for 5 kHz to 20 kHz.
2. Below a reading of 200 counts, add 10 counts.
3. Frequency range: 1 kHz to 2.5 kHz.

DC Voltage, Resistance, and Conductance Specifications

Function Range
L
4.000 V
40.00 V
400.0 V
1000 V
F
400.0 mV
mV
400.0 Ω
e
4.000 kΩ
40.00 kΩ
400.0 kΩ
4.000 MΩ
40.00 MΩ
nS
40.00 nS
1. For extended use at high RH, change the 400 mV and 4.0 V ac accuracy specification to ± (1.5 % + 4 counts) for
45 Hz to 1 kHz and ± (3.0 % + 25 counts) for 5 kHz to 20 kHz.
2. When using the REL ∆ function to compensate for offsets.
Resolution
50-60 Hz
±(0.7 % + 4)
0.1 mV
±(0.7 % + 2)
0.001 V
±(0.7 % + 2)
0.01 V
±(0.7 % + 2)
0.1 V
±(0.7 % + 2)
1 V
Resolution
0.1 mV
0.001 V
0.01 V
0.1 V
1 V
Resolution
0.001 V
0.01 V
0.1 V
1 V
0.1 mV
0.1 Ω
0.001 kΩ
0.01 kΩ
0.1 kΩ
0.001 MΩ
0.01 MΩ
0.01 nS
1
Accuracy
45 Hz - 1 kHz 1-5 kHz
±(1.0 % + 4) ±(2.0 % + 4)
±(1.0 % + 4) ±(2.0 % + 4)
±(1.0 % + 4) ±(2.0 % + 4)
±(1.0 % + 4) ±(2.0 % + 4)
5
±(1.0 % + 4)
unspecified
Accuracy
50 Hz - 60 Hz 45 Hz - 1 kHz
±(0.5 % + 4) ±(1.0 % + 4)
±(0.5 % + 2) ±(1.0 % + 4)
±(0.5 % + 2) ±(1.0 % + 4)
±(0.5 % + 2) ±(1.0 % + 4)
±(0.5 % + 2) ±(1.0 % + 4)
Accuracy
Model 83 Model 85
±(0.1 % + 1) ±(0.08 % + 1)
±(0.1 % + 1) ±(0.08 % + 1)
±(0.1 % + 1) ±(0.08 % + 1)
±(0.1 % + 1) ±(0.08 % + 1)
±(0.3 % + 1) ±(0.1 % + 1)
2
±(0.4 % + 2) ±(0.2 % + 2)
±(0.4 % + 1) ±(0.2 % + 1)
±(0.4 % + 1) ±(0.2 % + 1)
±(0.7 % + 1) ±(0.6 % + 1)
±(0.7 % + 1) ±(0.6 % + 1)
±(1.0 % + 3) ±(1.0 % + 3)
±(1.0 % + 10) ±(1.0 % + 10)
Multimeters
Specifications
2
5-20 kHz
±(2.0 % + 20)
±(2.0 % + 20)
±(2.0 % + 20)
4
unspecified
unspecified
1
1 kHz - 5 kHz
±(2.0 % + 4)
±(2.0 % + 4)
±(2.0 % + 4)
3
±(2.0 % + 4)
unspecified
1
Model 87
±(0.05 % + 1)
±(0.05 % + 1)
±(0.05 % + 1)
±(0.05 % + 1)
±(0.1 % + 1)
2 2
±(0.2 % + 2)
±(0.2 % + 1)
±(0.2 % + 1)
±(0.6 % + 1)
±(0.6 % + 1)
±(1.0 % + 3)
±(1.0 % + 10)
5