
WP-TRMS true effective value transmitter
◆ Main features
● Adopt two-wire system international standard current signal output
● Arbitrary waveform alternating signal input, wide measurement area
● Direct measurement of 0~500V/0~5A
◆ Measurement error comparison table
Comparison of measurement error between true effective value method and average value method:
Crest factor: Kp= Up/Urms
Form factor: Kf= Urms/U
For sine wave: Kp=1.414 Kf=1.111
Urms=1.111U
Order: actual value = 1.111U; true value = Urms
Then: γ = (actual value-true value)/true value X 100%
Measuring signal:
● AC voltage 0~500V
● Alternating current 0~5A
● Output signal: (4~20) mA DC (two-wire system)
● Working voltage: (7.5~36) VDC
● Accuracy: 0.2 level
● Allowable temperature: (-30~70)℃
● Relative humidity: ≤85%RH (no condensation)
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