TH0350

  • DCI Measurement: 1 mA~11A

  • Analog Resistance Range: 100 μΩ~11 MΩ 

  • Uncertainty: 50 ppm

  • Adjustment Fineness: 5nΩ

  • 2-wire or 4-wire Resistance Mode

  • There is no residual resistance of the transfer switch and contact resistance.

  • LCD Touch Screen

TH0350 is DC bridges calibrator that can accurately simulate a wide range of DC standard resistances. It can verify and calibrate single-arm bridges, double-arm bridges, high-precision DC resistance meters and digital micro-ohmmeters.

Power Supply

AC ( 220 ± 22 ) V，( 50 ± 2 ) Hz；

Warm-up Time

Not less than 1 hour, and the warm-up time again after shutting down in the middle should not be less than 2 times the shutdown time;

Maximum Power Consumption

150 VA

Temperature Performance

Working temperature: 18 °C ~ 28 °C；

Storage temperature: -10 °C ~ 50 °C；

Humidity Performance

Working humidity: (20% ~ 80%) R·H, non-condensing;

Storage humidity: < 85% R·H, no condensation;

Altitude

< 3000 m

Weight

About 10 kg

Communication Interface

RS 232、USB、IP

Dimension

400 mm ( W ) × 265 mm ( D ) × 190 mm ( H )（without feet and handles）

4.1 Low Value Resistor Simulation

Range

Fineness Adjustment

Measurement Uncertainty (k=2, Ppm*Rd+Μω)[1]

Input Current[2]

24h

( 23 ± 1 )°C

90days

( 23 ± 5 )°C

1year

( 23 ± 5 )°C

1 mΩ

5 nΩ

40 + 0.5

60 + 0.5

80 + 0.5

1 A~10 A

10 mΩ

50 nΩ

40 + 1

60 + 1

80 + 1

0.5 A~5 A

100 mΩ

500 nΩ

25 + 3

40 + 3

50 + 3

0.3A ~5 A

1 Ω

5 μΩ

25 + 10

40 + 10

50 + 10

0.05 A~5 A

10 Ω

50 μΩ

25 + 100

40 + 100

50 + 100

10 mA~300 mA

100 Ω

500 μΩ

25 + 1000

40 + 1000

50 + 1000

1 mA~30 mA

Note [1]: RD is the reading value, the same below;

 [2] When the current and resistance exceed the range, the resistance value will bring additional error

Resistance Simulation Range: (10%~110%)*RG, 7-digit display

Wiring Method: 4-wire

Current Input Range: 1 mA ~ 11 A

Range Switching: manual/automatic shifting


4.2 Medium and High Value Resistance Simulation

Range

Fineness Adjustment

Measurement Uncertainty ( k=2, ppm*RD+Ω )

Input Current

24h

(23±1)°C

90days

(23±5)°C

1year

(23±5)°C

100 Ω

500 μΩ

12 + 0.002

20 + 0.002

25 + 0.002

1 mA~80 mA

300 Ω

1.5 mΩ

12 + 0.003

20 + 0.003

25 + 0.003

1 mA~60 mA

1 kΩ

5 mΩ

12 + 0.01

18 + 0.01

20 + 0.01

1 mA~12 mA

3 kΩ

15 mΩ

12 + 0.03

18 + 0.03

20 + 0.03

0.1 mA~4 mA

10 kΩ

50 mΩ

12 + 0.1

18 + 0.1

20 + 0.1

0.1 mA~2 mA

30 kΩ

150 mΩ

12 + 0.3

18 + 0.3

20 + 0.3

10 μA~400 μA

100 kΩ

500 mΩ

15 + 1

24 + 1

30 + 1

10 μA~200 μA

300 kΩ

1.5 Ω

17 + 3

28 + 3

35 + 3

1 μA~40 μA

1 MΩ

5 Ω

17 + 10

28 + 10

35 + 10

1 μA~20 μA

3 MΩ

15 Ω

30 + 30

48 + 30

60 + 30

0.25 μA~4 μA

10 MΩ

50Ω

65 + 100

110 + 100

130 + 100

0.25 μA~2 μA

Resistance Simulation Range: (10%~110%)*RG, 7-digit display

Wiring Method: 4-wires /2-wires

Current Input Range: 250 nA ~ 80 mA

Range Switching: manual/automatic shifting

  • Calibration of Class 0.02 and below single and double arm bridges (e.g. QJ44, QJ42, QJ57)

  • Calibration of Class 0.02 and below DC resistance meter

  • Calibration of Class 0.02 and below temperature measuring bridge

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