Yokogawa WT2030 Spec | 378.63KB | Download |
The WT2010/WT2030 offers variable attenuator filtering capability and an excellent combination of features.
For the WT2000 series, we installed a high performance DSP and also developed a "variable attenuation type filter method" as same as 2531 to realize multiple items simultaneous measurement and high speed response which are required for electric power measurement. This filtering method enables the attenuation constant to be varied for each sampling. Compared to the conventional analog filter it has various merits including the following: (1) it has low ripple and fast response, (2) it prevents the number of calculation processing operations of the DSP from increasing, and does not significantly reduce the sampling rate, and (3) there is no need to synchronize it with the interval of the input signal. As a result, the measurement values are unaffected even if the frequency changes or a low frequency waveform is superimposed on the input signal. This method realizes a high response of 36 items of data/250 ms.
PWM type inverter equipment which is very widely used generates a voltage waveform by switching the frequency conversion circuit, hence the output contains a lot of noise. To ensure accuracy when measuring such equipment, it is important that the measuring instrument have high noise immunity. In the design of the WT2000 series, care was taken to minimize the effect of common mode noise, power line noise and pulse noise, thus ensuring highly accurate and stable measurement.
The integration method used in the WT2000 series enables the instrument to continuously acquire data by sampling the input signal at a high rate of about 110 kHz. As a result, the instrument can measure abrupt changes in input value, which was difficult to realize with conventional measuring instruments, thus enabling integrated values to be measured with very little loss of data. (There is virtually no delay or pause period due to the response of the filter.) With YOKOGAWA's conventional models, the resolution of the displayed value resulting from an integration operation is fixed by the maximum integration time, hence for short period integration, the bottom digit was not displayed and the resolution was insufficient. The WT 2000 series uses an "auto resolution method" in which the display resolution automatically changes along with the lapse of the integration time, ensuring the maximum resolution even for short period measurement.
The power factor error as percent of reading vs. power factor
Model | Description |
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253101 (discontinued) | WT2010/WT2030 Single Phase Model |
253102 (discontinued) | WT2010/WT2030 3-phase, 3-wire model |
253103 (discontinued) | WT2010/WT2030 3-phase, 4-wire model |
Name | Description | |
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Power Measurement of High Frequency Lighting Systems | Power Measurement of High Frequency Lighting Systems | Learn More |
Name | Description | |
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Harmonic Analysis Software |
WT2000 Series: perform harmonic analysis conforming to the IEC1000-3-2 standard. Allows you to perform hours of continuous measurement, 16 cycles at a time, and make evaluations at 2.5 minute intervals. |
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Multi-Item Display/Recording Software | The software allows you to enter the voltage and current range, and other settings in the WT series instrument's display panel. Also you can display all measurement item data (normal and calculated) on a PC, and save it to an ASCII file. | y-Link |
Quick Basic Sample Program (GP-IB IEEE488.1) For WT2010 | This is a Quick Basic sample program of GP-IB IEEE488.1 for WT2010 | y-Link |
Quick Basic Sample Program (GP-IB IEEE488.1) for WT2030 | This is a Quick Basic sample program of GP-IB IEEE488.1 for WT2030 | y-Link |
Quick Basic Sample Program (GP-IB IEEE488.2) for WT2010 | This is a Quick Basic sample program of GP-IB IEEE488.2 for WT2010 | y-Link |
Quick Basic Sample Program (GP-IB IEEE488.2) for WT2030 | This is a Quick Basic sample program of GP-IB IEEE488.2 for WT2030 | y-Link |
Voltage Regulation / Flicker Measurement Software | Allows you to perform voltage fluctuation and flicker measurements conforming with the IEC1000-3-3 standard. With dc, dmax, dt, Pst, and Plt as the measurement items, you can perform 12 measurements at 10 minutes each, and make GOOD/NO GOOD determinations. The general functions of this software allow you to enter the voltage and current range, and other settings in the instrument's display panel. | y-Link |
One main reason was that the WT2000 can simultaneously display voltage, current, power, and integrated power, thereby allowing us to immediately confirm our data. Furthermore, we can output data from a PC using communications functions (GP-IB or RS-232C), and analyze harmonics with the harmonic measurement function.
By bringing in theWT2000 we could acheive the goals we set for our inspection equipment including automation, improving accuracy and reliability of measurements, and enabling quantitative judgments. For judgements based on power values and other factors, the basic accuracy of the power meter is critical. The WT2000 achieves high-precision measurements with its basic accuracy of +/- 0.08%. Therefore we use it not only for judgment but also as a standard, and for adjusting voltage and current generators.
Product of the OMRON ASO Co., Ltd.