TH0320 is a series of high-precision, ultra-stable reference-grade standard resistors featuring excellent long-term stability and a low temperature coefficient. These resistors can be used in combination with precision I/I conversion standards and precision voltmeters to enable accurate current conversion measurements across a wide range.
TH0320 is a series of high-precision, ultra-stable reference-grade standard resistors featuring excellent long-term stability and a low temperature coefficient. These resistors can be used in combination with precision I/I conversion standards and precision voltmeters to enable accurate current conversion measurements across a wide range.
2. Features
Long-term stability: 3 ppm/year
Temperature coefficient: 0.2 ppm/℃
Nominal resistance: 1 Ω ~ 10 MΩ (8 in total)
Low thermal potential and good structural design
Excellent long-term stability and extremely low temperature coefficient.
Can be used directly at room temperature (18℃ ~ 28℃)
Small size and light weight, easy to carry to the site for use.
Can be customized according to customer needs.
3. Applications
• Calibrate high precision resistance meter
• Calibrate standard resistance/precision resistance
• Establish high precision current measurement system
☆ Calibrate Resistance Meter
• Calibrate two-wire (≥ 10 MΩ) or four-wire (≤ 1 MΩ) resistance meters as standard resistors.
• It can be used directly without placing in constant temperature oil tank or air tank.
☆Calibrate Standard/Precision Resistance
• Calibrate precision resistance with precision resistance bridge (such as TH0210).
☆ Establish High Precision DC Measurement System
• The TH0320 can be used in combination with DC I/I conversion standards (ratio standards) and precision voltmeters to form a DC high-current measurement system.
Note: When measuring current, the applied current should not exceed the maximum operating current of the standard resistor. For precision current measurements, factors such as the resistor’s rated power and power coefficient should also be considered.
TH0320 Reference Resistance Standard
1. Summary
TH0320 is a series of high-precision, ultra-stable reference-grade standard resistors featuring excellent long-term stability and a low temperature coefficient. These resistors can be used in combination with precision I/I conversion standards and precision voltmeters to enable accurate current conversion measurements across a wide range.
2. Features
Long-term stability: 3 ppm/year
Temperature coefficient: 0.2 ppm/℃
Nominal resistance: 1 Ω ~ 10 MΩ (8 in total)
Low thermal potential and good structural design
Excellent long-term stability and extremely low temperature coefficient.
Can be used directly at room temperature (18℃ ~ 28℃)
Small size and light weight, easy to carry to the site for use.
Can be customized according to customer needs.
3. Applications
• Calibrate high precision resistance meter
• Calibrate standard resistance/precision resistance
• Establish high precision current measurement system
☆ Calibrate Resistance Meter
• Calibrate two-wire (≥ 10 MΩ) or four-wire (≤ 1 MΩ) resistance meters as standard resistors.
• It can be used directly without placing in constant temperature oil tank or air tank.
☆Calibrate Standard/Precision Resistance
• Calibrate precision resistance with precision resistance bridge (such as TH0210).
☆ Establish High Precision DC Measurement System
• The TH0320 can be used in combination with DC I/I conversion standards (ratio standards) and precision voltmeters to form a DC high-current measurement system.
Note: When measuring current, the applied current should not exceed the maximum operating current of the standard resistor. For precision current measurements, factors such as the resistor’s rated power and power coefficient should also be considered.
4. Specifications
Model
Nominal Resistance @ 23°C
Initial Deviation (ppm )
Measurement Uncertainty
(ppm)
Annual Stability
(ppm)
Temperature Coefficient
(ppm/°C)
Wiring Method
Rated Power
(W)
Power Factor
(ppm)
Maximum Operating Current ( mA )
Maximum Operating Voltage ( V )
TH0320-1R
1 Ω
5
2.5
3
0.2
4W
0.5
10
707
0.707
TH0320-10R
10 Ω
5
2.5
3
0.2
4W
0.1
10
100
1.00
TH0320-100R
100 Ω
5
2.5
3
0.2
4W
0.1
10
31.6
3.16
TH0320-1kR
1 kΩ
5
2.5
3
0.2
4W
0.1
10
10
10
TH0320-10kR
10 kΩ
5
2.5
3
0.2
4W
0.1
10
3.16
31.6
TH0320-100kR
100 kΩ
5
2.5
3
0.2
2W
0.1
10
1
100
TH0320-1MR
1 MΩ
5
2.5
3
0.2
2W
0.1
10
0.316
316
TH0320-10MR
10 MΩ
10
5
6
0.2
2W
0.1
10
0.1
1000
5. General Specifications
Power supply
——
Temperature performance
Operating temperature: 18 °C ~ 28 °C;
Storage temperature: -10 °C ~ 60 °C;
Humidity performance
Working humidity :(40%-60%) R·H, no condensation;
Storage humidity: ＜ 95% R·H, no condensation;
Altitude
< 3000 m
Weight
About 1 kg
Dimensions
100 mm(W) × 150 mm(D) × 70 mm (H) (excluding terminals and footpads)
4. Specifications
Model
Nominal Resistance @ 23°C
Initial Deviation (ppm )
Measurement Uncertainty
(ppm)
Annual Stability
(ppm)
Temperature Coefficient
(ppm/°C)
Wiring Method
Rated Power
(W)
Power Factor
(ppm)
Maximum Operating Current ( mA )
Maximum Operating Voltage ( V )
TH0320-1R
1 Ω
5
2.5
3
0.2
4W
0.5
10
707
0.707
TH0320-10R
10 Ω
5
2.5
3
0.2
4W
0.1
10
100
1.00
TH0320-100R
100 Ω
5
2.5
3
0.2
4W
0.1
10
31.6
3.16
TH0320-1kR
1 kΩ
5
2.5
3
0.2
4W
0.1
10
10
10
TH0320-10kR
10 kΩ
5
2.5
3
0.2
4W
0.1
10
3.16
31.6
TH0320-100kR
100 kΩ
5
2.5
3
0.2
2W
0.1
10
1
100
TH0320-1MR
1 MΩ
5
2.5
3
0.2
2W
0.1
10
0.316
316
TH0320-10MR
10 MΩ
10
5
6
0.2
2W
0.1
10
0.1
1000
5. General Specifications
Power supply
——
Temperature performance
Operating temperature: 18 °C ~ 28 °C;
Storage temperature: -10 °C ~ 60 °C;
Humidity performance
Working humidity :(40%-60%) R·H, no condensation;
Storage humidity: ＜ 95% R·H, no condensation;
Altitude
< 3000 m
Weight
About 1 kg
Dimensions
100 mm(W) × 150 mm(D) × 70 mm (H) (excluding terminals and footpads)
