TH 0490 Bisector Current Ratio Standard
1. Summary
TH0490 is a series of bisector current ratio standard, which can divide the input wideband current into two equal parts before outputting. The ratio error and phase displacement of the two currents are very small.
2. F eature
Nominal Input Current: 2 A / 20 A
Frequency Range: 45 Hz ~ 5 kHz (TH0490-5kHz); 5 kHz ~ 100 kHz（TH0490-100kHz）
Typical Value of Amplitude Error: better than 10 ppm
Typical Value of Phase Angle Error: better than20 μrad
3. A pplication
TH 0490 Bisector Current Ratio Standard
1. Summary
TH0490 is a series of bisector current ratio standard, which can divide the input wideband current into two equal parts before outputting. The ratio error and phase displacement of the two currents are very small.
2. F eature
Nominal Input Current: 2 A / 20 A
Frequency Range: 45 Hz ~ 5 kHz (TH0490-5kHz); 5 kHz ~ 100 kHz（TH0490-100kHz）
Typical Value of Amplitude Error: better than 10 ppm
Typical Value of Phase Angle Error: better than20 μrad
3. A pplication
4. Specification( TH 0490-5kHz)
4.1 Amplitude
Type
Nominal Current Input (A)
Loop Load ( Ω )
Ratio Measurement Uncertainty (k=2 , ppm )
53 Hz
100 Hz
400 Hz
1 kHz
2 kHz
5 kHz
TH0490-5kHz-2A
100m
20
3
4
6
7
10
10
10
3
6
7
9
12
12
200m
10
3
4
6
7
10
10
5
3
6
7
10
12
12
500m
5
2
3
4
5
8
8
2
2
4
5
8
10
10
1
2
2
3
4
4
7
7
1
2
4
5
5
8
8
2
1
2
3
4
4
7
7
500m
3
4
6
6
12
12
TH0490-5kHz-20A
1
2
4
5
7
8
12
12
1
4
7
8
10
15
15
2
1
4
5
7
8
12
12
500m
4
7
8
12
15
15
5
400m
3
4
5
6
10
10
200m
3
5
6
10
12
12
10
200m
3
4
5
5
9
9
100m
3
5
6
7
10
10
20
100m
3
4
5
6
9
9
50m
4
5
7
8
15
15
4.2 Phase Displacement
Type
Nominal Current Input
(A)
Loop Load
( Ω )
Measurement Uncertainty (k=2 , μrad)
53 Hz
100 Hz
400 Hz
1 kHz
2 kHz
5 kHz
TH0490-5kHz-2
100m
20
8
5
6
6
8
8
10
10
6
8
8
10
10
200m
10
8
5
6
6
8
8
5
10
6
8
8
10
10
500m
5
5
3
3
3
5
5
2
8
3
5
5
6
8
1
2
5
3
3
3
5
5
1
8
3
5
5
6
8
2
1
5
3
3
3
5
5
500m
8
5
6
8
10
10
TH0490-5kHz-20
1
2
9
6
7
7
10
10
1
11
7
10
10
12
12
2
1
9
6
7
7
10
10
500m
11
7
9
10
12
12
5
400m
6
4
4
4
7
7
200m
9
4
6
6
8
10
10
200m
6
4
4
4
7
7
100m
9
4
6
6
8
10
20
100m
6
4
4
4
7
7
50m
9
6
7
9
12
12
5. Specification( TH 0490-100kHz)
5.1 Amplitude
Type
Nominal Current Input
(A)
Loop Load
( Ω )
Ratio Measurement Uncertainty (k=2 , ppm )
5 kHz
10 kHz
20 kHz
50 kHz
100 kHz
TH0490-100kHz-2
100 m
20
6
7
9
10
12
10
7
9
12
12
16
200 m
10
6
7
9
10
12
5
7
9
12
12
12
500 m
5
4
5
7
8
10
2
5
7
9
10
12
1
2
4
4
6
8
10
1
5
5
7
8
10
2
1
4
4
6
8
10
500 m
6
6
9
10
16
TH0490-100kHz-20
1
2
8
9
11
12
15
1
8
10
13
14
18
2
1
8
9
11
12
15
500 m
9
11
13
14
15
5
400 m
6
7
9
10
12
200 m
7
9
11
12
15
10
200 m
6
6
8
10
12
100 m
7
7
9
10
12
20
100 m
6
6
8
10
12
50 m
8
8
10
12
18
5 .2 Phase Displacement
Type
Nominal Current Input
(A)
Loop Load
( Ω )
Measurement Uncertainty (k=2 , μrad)
53 Hz
100 Hz
400 Hz
1 kHz
2 kHz
5 kHz
TH0490-100kHz-2
100 m
20
8
5
6
6
8
8
10
10
6
8
8
10
10
200 m
10
8
5
6
6
8
8
5
10
6
8
8
10
10
500 m
5
5
3
3
3
5
5
2
8
3
5
5
6
8
1
2
5
3
3
3
5
5
1
8
3
5
5
6
8
2
1
5
3
3
3
5
5
500 m
8
5
6
8
10
10
TH0490-100kHz-20
1
2
9
6
7
7
10
10
1
11
7
10
10
12
12
2
1
9
6
7
7
10
10
500 m
11
7
9
10
12
12
5
400 m
6
4
4
4
7
7
200 m
9
4
6
6
8
10
10
200 m
6
4
4
4
7
7
100 m
9
4
6
6
8
10
20
100 m
6
4
4
4
7
7
50 m
9
6
7
9
12
12
6. Ordering Information
7. General Specifications
Power Supply
—
Temperature Performance
Working temperature: 18 °C ~ 28 °C；
Storage temperature: -20 °C ~ 70 °C；
Humidity Performance
Working humidity:（15% ~ 80%）R·H，no condensation;
Storage Humidity: < 95%R·H，no condensation.
Input / output Interface
Input: N female
Output: N male
Maximum Dimensions
215 mm (W) × 130 mm (D) × 62 mm (H)
4. Specification( TH 0490-5kHz)
4.1 Amplitude
Type
Nominal Current Input (A)
Loop Load ( Ω )
Ratio Measurement Uncertainty (k=2 , ppm )
53 Hz
100 Hz
400 Hz
1 kHz
2 kHz
5 kHz
TH0490-5kHz-2A
100m
20
3
4
6
7
10
10
10
3
6
7
9
12
12
200m
10
3
4
6
7
10
10
5
3
6
7
10
12
12
500m
5
2
3
4
5
8
8
2
2
4
5
8
10
10
1
2
2
3
4
4
7
7
1
2
4
5
5
8
8
2
1
2
3
4
4
7
7
500m
3
4
6
6
12
12
TH0490-5kHz-20A
1
2
4
5
7
8
12
12
1
4
7
8
10
15
15
2
1
4
5
7
8
12
12
500m
4
7
8
12
15
15
5
400m
3
4
5
6
10
10
200m
3
5
6
10
12
12
10
200m
3
4
5
5
9
9
100m
3
5
6
7
10
10
20
100m
3
4
5
6
9
9
50m
4
5
7
8
15
15
4.2 Phase Displacement
Type
Nominal Current Input
(A)
Loop Load
( Ω )
Measurement Uncertainty (k=2 , μrad)
53 Hz
100 Hz
400 Hz
1 kHz
2 kHz
5 kHz
TH0490-5kHz-2
100m
20
8
5
6
6
8
8
10
10
6
8
8
10
10
200m
10
8
5
6
6
8
8
5
10
6
8
8
10
10
500m
5
5
3
3
3
5
5
2
8
3
5
5
6
8
1
2
5
3
3
3
5
5
1
8
3
5
5
6
8
2
1
5
3
3
3
5
5
500m
8
5
6
8
10
10
TH0490-5kHz-20
1
2
9
6
7
7
10
10
1
11
7
10
10
12
12
2
1
9
6
7
7
10
10
500m
11
7
9
10
12
12
5
400m
6
4
4
4
7
7
200m
9
4
6
6
8
10
10
200m
6
4
4
4
7
7
100m
9
4
6
6
8
10
20
100m
6
4
4
4
7
7
50m
9
6
7
9
12
12
5. Specification( TH 0490-100kHz)
5.1 Amplitude
Type
Nominal Current Input
(A)
Loop Load
( Ω )
Ratio Measurement Uncertainty (k=2 , ppm )
5 kHz
10 kHz
20 kHz
50 kHz
100 kHz
TH0490-100kHz-2
100 m
20
6
7
9
10
12
10
7
9
12
12
16
200 m
10
6
7
9
10
12
5
7
9
12
12
12
500 m
5
4
5
7
8
10
2
5
7
9
10
12
1
2
4
4
6
8
10
1
5
5
7
8
10
2
1
4
4
6
8
10
500 m
6
6
9
10
16
TH0490-100kHz-20
1
2
8
9
11
12
15
1
8
10
13
14
18
2
1
8
9
11
12
15
500 m
9
11
13
14
15
5
400 m
6
7
9
10
12
200 m
7
9
11
12
15
10
200 m
6
6
8
10
12
100 m
7
7
9
10
12
20
100 m
6
6
8
10
12
50 m
8
8
10
12
18
5 .2 Phase Displacement
Type
Nominal Current Input
(A)
Loop Load
( Ω )
Measurement Uncertainty (k=2 , μrad)
53 Hz
100 Hz
400 Hz
1 kHz
2 kHz
5 kHz
TH0490-100kHz-2
100 m
20
8
5
6
6
8
8
10
10
6
8
8
10
10
200 m
10
8
5
6
6
8
8
5
10
6
8
8
10
10
500 m
5
5
3
3
3
5
5
2
8
3
5
5
6
8
1
2
5
3
3
3
5
5
1
8
3
5
5
6
8
2
1
5
3
3
3
5
5
500 m
8
5
6
8
10
10
TH0490-100kHz-20
1
2
9
6
7
7
10
10
1
11
7
10
10
12
12
2
1
9
6
7
7
10
10
500 m
11
7
9
10
12
12
5
400 m
6
4
4
4
7
7
200 m
9
4
6
6
8
10
10
200 m
6
4
4
4
7
7
100 m
9
4
6
6
8
10
20
100 m
6
4
4
4
7
7
50 m
9
6
7
9
12
12
6. Ordering Information
7. General Specifications
Power Supply
—
Temperature Performance
Working temperature: 18 °C ~ 28 °C；
Storage temperature: -20 °C ~ 70 °C；
Humidity Performance
Working humidity:（15% ~ 80%）R·H，no condensation;
Storage Humidity: < 95%R·H，no condensation.
Input / output Interface
Input: N female
Output: N male
Maximum Dimensions
215 mm (W) × 130 mm (D) × 62 mm (H)
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