Fluke 5720A Introduction and Specifications, Resistance Specifications, ±1 C Note, Characterized

Introduction and Specifications 1

Resistance Specifications

Table 1-12. Resistance Secondary Performance Specifications and Operating Characteristics

Nominal

Value

Ω

0

1

1.9

10

19

100

190

1k

1.9 k

10k

19k

100k

190k

1M

1.9 M

10M

19M

100M

Notes:

Stability

±1 °C [Note 1]

24Hours

±ppm

⎯

32

25

5

4

2

2

2

2

2

2

2

2

2.5

3.5

10

20

50

Temperature

Coefficient Adder

[Note 2]

10°-40 °C	0°-10 °C
	and
	40°-50 °C
±ppm/°C
⎯	⎯
4
	5
6
	7
2
	3
2
	3
2
	3
2
	3
2
	3
2
	3
2
	3
2
	3
2
	3

23

2.56

310

5 20

840

12100

Full Spec

Load Range

[Note 3]

mA

8 - 500

8 - 100

8 - 100

8 - 11

8 - 11

8 - 11

8 - 11

1 - 2

1 - 1.5

100 - 500 μA

50 - 250 μA

10 - 100 μA

5 - 50 μA

5 - 20 μA

2.5- 10 μA

0.5- 2 μA

0.25- 1 μA

50 - 200 nA

Maximum

Peak

Current

mA

500

700

500

220

160

70

50

22

16

7

5

1

500μA

100μA

50μA

10μA

5μA

1μA

Maximum

Difference

of

Characterized

to Nominal

Value

±ppm

⎯

500

500

300

300

150

150

150

150

150

150

150

150

200

200

300

300

500

Two-Wire Adder

	active
compensation
	[Note 4]
Lead Resistance
0.1 Ω			1Ω
	±mΩ
	μ			4μV
	4 V	4 +
2 +				Im
	Im
	4μV			4μV
2 +		4 +
	Im			Im
	4μV			4μV
2 +	Im	4 +		Im
	4μV			4μV
2 +		4 +
	Im			Im
	4μV			4μV
2 +		4 +
	Im			Im
	4μV			4μV
2 +		4 +
	Im			Im
	4μV			4μV
2 +	Im	4 +		Im
10		15
10
		15
50
		60
100
		120

Im= Current produced by Ohmmeter

1.Stability specifications are included in the Absolute Uncertainty values in the primary specification tables.

2.Temperature coefficient is an adder to uncertainty specifications that does not apply unless operated more than 5 °C from calibration temperature, or calibrated outside the range 19 °C to 24 °C. Two examples:

∙Calibrate at 20 °C: Temperature coefficient adder is not required unless operated below 15 °C or above 25 °C.

∙Calibrate at 26 °C: Add 2 °C temperature coefficient adder. Additional temperature coefficient adder is not required unless operated below 21 °C or above 31 °C.

3.Refer to current derating factors table for loads outside of this range.

4.Active two-wire compensation may be selected for values less than 100 kΩ, with either the front panel or

the meter input terminals as reference plane. Active compensation is limited to 11 mA load, and to 2 V burden. Two-wire compensation can be used only with Ω-meters that source continuous (not pulsed) dc

current.

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