YOKOGAWA WT310EH User Manual

1-1
IM WT310E-01EN
Features
1
2
3
4
5
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7
8
App
Index
1.1 Items That This Instrument Can Measure
(Measurement functions)
The items that you can measure with this instrument are listed below. For details about how the
values of measurement functions are determined, see appendix 1. For explanations of the terms
measurementfunction,inputelement,wiringunit,andΣfunction,see“WhatIsaMeasurement
Function?” (page 1-4).
WT310E and WT310EH
 TheWT310EandWT310EHareonlyequippedwithoneinputelement.Becauseofthis,they
can only measure single-phase measurement functions. They cannot measure comprehensive
measurementfunctionsthattreatmultipleinputelementsasasinglewiringunit(Σfunctions).
WT332E/WT333E
 TheWT332E/WT333Eisequippedwithtwoorthreeinputelements.Becauseofthis,theWT332E/
WT333E can measure not only single-phase measurement functions for each input element but
alsomeasuremeasurementfunctionsthattreatmultiplephasesasasinglewiringunit(Σfunctions).
The measurement functions that you can measure using this instrument are divided into normal
measurement and harmonic measurement and listed in the following table.
Measurement Functions Used in Normal Measurement
Voltage
Measurement
Function
(Symbol)
Panel Indicator
Light
1
Description Measured for
Each Input
Element
Measured for
Wiring Units
(WT332E/
WT333E only)
U(RMS) V True rms voltage Yes Yes
U(VOLTAGEMEAN) V Rectifiedmeanvoltagecalibrated
to the rms value
Yes Yes
U (DC) V Linear voltage average Yes Yes
U+pk Vpk Maximum voltage Yes No
U-pk Vpk Minimum voltage Yes No
Cf U
2
MATH Voltagecrestfactor Yes No
Yes: Measured. No: Not measured.
1 Panel indicators indicate the unit of the measured value and the item that is being measured.
They appear on the right or left side of the 7-segment LED display that shows the measured data.
2 This measurement function is set using the MATH feature of this instrument.
Current
Measurement
Function
(Symbol)
Panel Indicator
Light
Description Measured for
Each Input
Element
Measured for
Wiring Units
(WT332E/
WT333E only)
I(RMS) A True rms current Yes Yes
I (DC) A Linear current average Yes Yes
I+pk Apk Maximum current Yes No
I-pk Apk Minimum current Yes No
Cf I
*
MATH Current crest factor Yes No
* This measurement function is set using the MATH feature of this instrument.
Chapter 1 Features

YOKOGAWA WT310EH Specifications

General

Brand	YOKOGAWA
Model	WT310EH
Category	Measuring Instruments
Language	English