YOKOGAWA wt3000 User Manual

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IM 760301-01E
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App
Index
Measurement Conditions
Explanation
For functional details, see section 2.3.
The averaging function is effective when reading of the numeric display is difficult due to
fluctuations. This occurs when the fluctuation of the power supply or the load is large or
when the input signal frequency is low.
Measurement Functions of Normal Measurement
• Turning ON/OFF Averaging
You can select whether to perform the specified averaging operation.
• ON: Performs averaging.
• OFF: Does not perform averaging.
• Selecting the Averaging Type
Select one of the choices below. For the equation of each type, see section 2.3.
• Exp: Performs exponential averaging.
• Lin: Performs moving averaging.
• Setting the Attenuation Constant or Average Count
If the averaging type is Exp (exponential averaging), set the attenuation constant. If
the averaging type is Lin (moving averaging), set the average count.
• For Exp: Select the attenuation constant from 2, 4, 8, 16, 32, and 64.
• For Lin: Select the average count from 8, 16, 32, 64, 128, and 256.
• Measurement Functions That Are Averaged
The measurement functions that are directly averaged are indicated below. Other
functions that use these functions in their computation are also affected by the
averaging. For details regarding the determination of each measurement function, see
appendix 1.
• U, I, P, S, and Q
• ∆F1 to 4 (models with the delta computation function)
• Torque, speed, and Pm (models with the delta computation function)
• λ, φ, Cfu, CfI, Pc, q, q+, q-, WS, WQ, η1 to η4 are computed from the averaged P
and Q.
• Slip is computed from the averaged speed.
Measurement Functions of Harmonic Measurement (Option)
• Turning ON/OFF Averaging
• Harmonic Measurement in Normal Measurement Mode
• If averaging is turned ON and the averaging type is Exp (exponential averaging),
averaging is performed on the measurement functions of harmonic
measurement (option).
• If averaging is turned ON but the averaging type is Lin (moving averaging),
averaging is not performed on the measurement functions of harmonic
measurement (option).
• Wide Bandwidth Harmonic Measurement Mode
When averaging is turned ON, exponential averaging is performed on the
measurement functions of harmonic measurement.
• IEC Harmonic Measurement Mode
When averaging is turned ON, exponential averaging is performed on the
measurement functions of harmonic measurement.
4.9 Selecting the Averaging Function

YOKOGAWA wt3000 Specifications

General

Frequency Range	DC, 0.1 Hz to 1 MHz
Number of Input Elements	Up to 4 elements
Harmonic Measurement	Up to 500th order
Interfaces	USB, Ethernet, RS-232
Sampling Rate	2 MS/s
Voltage Range	1.5 V to 1000 V
Display	8.4-inch LCD