Fluke Car Amplifier 5725A User Manual
Introduction and Specifications
Specifications
1
1-11
Resistance
Nominal
Absolute Uncertainty of Characterized Value
±
5°C from calibration temperature [Note 1]
Relative Uncertainty
±
1°C
Value
24 Hours
90 Days
180 Days
1 Year
24 Hours
90 Days
Ω
±
ppm
±
ppm
0
1
1.9
10
19
100
190
1k
1.9k
10k
19k
100k
190k
1M
1.9M
10M
19M
100M
50
µΩ
85
85
26
24
15
15
11
11
9
9
11
11
16
17
33
43
110
50
µΩ
95
95
28
26
17
17
12
12
11
11
13
13
18
19
37
47
120
50
µΩ
100
100
30
28
18
18
13
13
12
12
14
14
20
21
40
50
125
50
µΩ
110
110
33
31
20
20
15
15
14
14
16
16
23
24
46
55
130
50
µΩ
32
25
5
4
2
2
2
2
2
2
2
2
2.5
3.5
10
20
50
50
µΩ
40
33
8
7
4
4
3.5
3.5
3.5
3.5
3.5
3.5
5
6
14
24
60
Secondary Performance Specifications and Operating Characteristics
Included in Uncertainty Specifications
Included in Uncertainty Specifications
Nominal
Stability
Temperature
Coefficient
[Note 2]
Full
Spec
Load
Load
Maximum
Maximum
Difference
of
Two-Wire Adder
active
compensation
[Note 4]
Value
±
1°C
24 Hours
10°-40°C
0°-10°C
and
Range
[Note 3]
Peak
Current
Characterized
to Nominal
Lead
Resistance
40°-50°C
Value
0.1
Ω
1
Ω
Ω
±
ppm
±
ppm/°C
mA
mA
±
ppm
±
m
Ω
0
8-500
500
2
4
1
32
4
5
8-100
700
500
2
4
1.9
25
6
7
8-100
500
500
2
4
10
5
2
3
8-11
220
300
2
4
19
4
2
3
8-11
160
300
2
4
100
2
2
3
8-11
70
150
2
4
190
2
2
3
8-11
50
150
2
4
1k
2
2
3
1-2
22
150
10
15
1.9k
2
2
3
1-1.5
16
150
10
15
10k
2
2
3
100-500
µ
A
7
150
50
60
19k
2
2
3
50-250
µ
A
5
150
100
120
100k
2
2
3
10-100
µ
A
1
150
190k
2
2
3
5-50
µ
A
500
µ
A
150
1M
2.5
2.5
6
5-20
µ
A
100
µ
A
200
1.9M
3.5
3
10
2.5-10
µ
A
50
µ
A
200
10M
10
5
20
.5-2
µ
A
10
µ
A
300
19M
20
8
40
.25-1
µ
A
5
µ
A
300
100M
50
12
100
50-200 nA
1
µ
A
500
Notes:
1. Specifications apply to displayed value. 4-wire connections, except 100 m
1. Specifications apply to displayed value. 4-wire connections, except 100 m
Ω
.
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:
a) Calibrate at 20°C: Temperature coefficient adder is not required unless operated below 15°C or above 25°C.
b) Calibrate at 26°C: Add 2°C temperature coefficient adder. Additional temperature coefficient adder is not required unless operated below
b) 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 k
4. Active two-wire compensation may be selected for values less than 100 k
Ω
, with either the front panel
or the meter input terminals as
reference plane. Active compensation is limited to 11 mA load, and to 2V burden. Two wire compensation can be used only with
Ω
meters that
source continuous (not pulsed) dc current.