TK1320 Current Sensor Comprehensive Testing Device
(The picture is for reference only, the actual product will be subject to delivery)
1. Summary
TK1320 is a multifunctional device designed for testing the comprehensive performance of current sensors. It mainly consists of a DC high-current standard source, a high-frequency constant current source, a pulse current source, a sensor output quantity tester, and dedicated testing software. This device can conduct metrological performance testing, frequency response bandwidth measurement, and response time measurement for current sensors. When combined with specialized testing software, it can automate multiple testing procedures.
2. Feature
- Metrology Performance Testing: High-current standard source and sensor output quantity tester.
- Frequency response bandwidth measurement: high-frequency current source + digital multimeter.
- Response time measurement: pulse current source + pulse shunt + multi-channel oscilloscope.
- Sensor auxiliary power supply and power consumption measurement.
- Mobile measurement and control console
- Multiple test positions (customizable)
- Special testing software
3. Application
| ☆ Metrology Performance Testing (Direct Measurement Method) |
- Direct Measurement Method: The high current standard source of TK1320 outputs the primary current standard source I1 to the current sensor under test, and its secondary signal is measured by the sensor output power tester, that is, the ratio difference (or phase displacement) of the sensor under test can be calculated. This method is suitable for testing medium and low precision current sensors.
- High Current Standard Source: DC high current standard source can be configured according to user needs. The current output range is 300 A ~ 5 kA. The accuracy level can reach Class 0.02.
- Sensor Output Power Tester: voltage measurement range ±(10 mV ~ 12 V), current measurement range ±(1 mA ~ 1.1 A), DC measurement accuracy reaches 0.005 level.
- Sensor Auxiliary Power Supply: adjustable within the range of DC ±(5.0 V ~ 50.0 V).
- Multiple Test Positions (optional): To test multiple current sensors at the same time, multiple sets of sensor output power testers and auxiliary power supplies need to be configured at the same time.
- Special Test Software: Users can customize the test plan to complete test items including zero-point output error, full-scale output error, linearity error, hysteresis (hysteresis), repeatability error and accuracy, etc., and edit the test points of each item to achieve Automatic detection of current sensor metering performance.
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| ☆ Frequency Response Bandwidth Measurement |
- Use a high-frequency constant current source with a standard digital multimeter to measure the frequency response bandwidth of the current sensor. If the sensor being tested is a current output type, a high-frequency coaxial shunt must be used to convert the secondary current I2 into a voltage signal U2 before connecting the digital multimeter to measure.
- High Frequency Constant Current Source: 1 mA ~ 10 A, DC ~ 1 MHz, stability 0.1%/min @ 1 MHz.
- Digital multimeter: A 6.5 digits (300 kHz) or 8.5 digits (1 MHz) digital multimeter can be selected according to the bandwidth of the sensor being tested.
- High Frequency Coaxial Shunt: nominal input current 100 mA, 1 A, nominal output voltage 1 V, frequency DC ~ 1 MHz, annual stability 18 ppm, AC/DC difference 30 ppm @ 1 MHz.
- Low Current Three-Way (Optional): It is convenient to connect two current sensors to be tested at the same time to achieve simultaneous detection and improve test efficiency.
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| ☆ Response Time Measurement |
- A pulse current source is used, combined with a standard pulse shunt and a multi-channel oscilloscope, to measure the response time of the current sensor. The pulse current is connected to the standard pulse shunt and the current sensor under test, and then the secondary output signal waveforms of the two are viewed on the oscilloscope. And the rise time of the current sensor under test is compared to calculate the response time.
- Pulse Current Source: current amplitude 500 A, rise time 10 μs, accuracy class 0.5.
- Standard Pulse Shunt: test current 500 A, response time < 10 ns.
- Multi-Channel Oscilloscope (optional): measurement channels ≥2, measurement bandwidth ≥ 100 MHz.
- Through-Core Current Sensor Test Fixture (optional): current specification 500 A, multiple test locations, low inductance coaxial structure.
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4. Specifications
4.1 DC High Current Standard Source
| Current Output Range |
300 A ~ 5 kA |
| Maximum Load Voltage |
3.5 V |
| Accuracy |
Class 0.02 |
| Annual Measurement Uncertainty(k=2) |
0.015 %*RG+0.005 %*RD |
| Programmed Commutation |
external commutator |
| Ripple Coefficient |
≤ 0.5 % |
| Current Overshoot |
≤ 10 % |
| Protective Function |
open circuit protection, overload protection, overheating protection |
4.2 Sensor Output Power Tester
Voltage
measurement range |
100 mV,1 V,10 V,manual or automatic range switching |
| ±(10 mV ~ 12 V) |
Current
Measurement Range |
10 mA,100 mA,1 A,manual or automatic range switching |
| ±(1 mA ~ 1.1 A) |
| Measurement Uncertainty (k=2) |
DC: 0.003%*RD + 0.002%*RG |
| Display Digits |
7 decimal digits |
| Temperature Coefficient |
0.5 ppm/°C @ (0°C~40°C) |
| Number of test positions |
Multiple measurement channels can be provided according to the number of test positions |
4.3 Sensor Auxiliary Power Supply and Power Consumption Measurement
| Supply Voltage |
DC ±(5.0 V~50.0 V) adjustable |
| Maximum Load Capacity |
1 A |
| Power Consumption Measurement Accuracy |
Class 0.5 |
| Protective Function |
open circuit protection, overload protection, overheating protection |
| Number of Test Positions |
Multiple auxiliary power supplies and power consumption measurement channels can be provided according to the number of test positions. |
| AC Power Supply |
AC 220 V power supply can be added according to user needs |
4.4 High Frequency Constant Current Source
| Current Output Range |
1 mA ~ 10.5 A |
| Frequency Range |
DC,10 Hz ~ 1 MHz |
| Short Term Stability |
DC: 0.005%/min
AC: 0.01%/min @ 10 kHz,0.05%/min @ 100kHz,0.1%/min@1MHz |
| Measurement Uncertainty(k=2) |
DC: 0.02%
AC: 0.08% @ 10 kHz,0.5% @ 100 kHz |
| Maximum Load Voltage |
7 Vrms |
4.5 Pulse Current Source
| Current Output Range |
500 A |
| Pulse Type |
Unipolar pulse |
| Measurement Uncertainty(k=2) |
0.5% |
| Repeat Frequency |
10 Hz ~ 1 kHz |
| Pulse Width |
1 ms ~ 100 ms,Adjustment step 0.1 ms |
| Rise/Fall Rate |
50 A/μs |
| Maximum Load Voltage |
9 Vpk |
5. General Specifications
| Warm-up Time |
30 minutes |
| Working Environment |
Temperature: 0°C ~ 40°C
Humidity: 20%R·H ~ 85%R·H, no condensation.
Others: No electromagnetic field interference. |
| Storage Environment |
Temperature: -20°C ~ 70°C
Humidity: 10%R·H ~ 95%R·H, no condensation. |
| Communication Interface |
RS232×1 |
6. Power Supply Requirements
| S/N |
Device Name |
Power supply type |
Maximum power consumption |
| 1 |
DC High Current Standard Source |
three phase five wire
AC 380 V ± 38 V
50 Hz ± 2 Hz |
4 kW per 1 kA current source |
| 2 |
Sensor Output Power Tester |
0.1 kW/set |
| 3 |
Sensor Auxiliary Power Supply And Power Consumption Measurement Module |
0.2 kW/set |
| 4 |
Pulse Current Source |
6 kW |
| 5 |
High Frequency Constant Current Source |
AC 220 V ± 2 V
50 Hz ± 2 Hz |
0.5 kW |
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