Mianyang Weibo Electronic WBV412U01, User Manual

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Mianyang Weibo Electronic Co., Ltd
No.7 Road second part of Xianren Road, Youxian District, Mianyang City, Sichuan province P.R. China
Tel: 86-0816-2971265 Fax: 86-0816-2281934
www.wb-my.com
wbwm@wbdz.cn
c) Measuring voltage ≤ 600V, uses terminal 3 and 1;
d) Measuring voltage
＞
600V, uses terminal 3 and 4;
3. Basic testing method for accuracy
(1) According to the terminal definition table to connect the testing circuit;
(2) The testing must to be done by under the following conditions
；
Auxiliary power: 24V±1
％
, ripple≤5mV
Ambient temperature: 25 ℃ ±2 ℃
Relative humidity: RH(45
～
75)
％
Accuracy for Signal Power Source instrument: 0.05
(3) warming up the transducer for 3 minutes
(4) using output monitoring meter V1 to measuring the output of signal power source
instrument, set a any input value which is within the measuring range of the
transducer Vr. (for e.g. if input value is 100V, the output is 0-5V, the expected output
value Vz should be calculated as:
Vz=
（
5V-0V
）
× Vr/100V
(5) using output monitoring meter V2 to measuring the output voltage V0 of the
transducer, the basic introduced errorγof the transducer should be calculated as:
γ= (Vo
－
Vz)/
（
5V-0V
）
×100
(6) Repeating (4) (5), if calculated absolute value is less than the given accuracy value
of the transducer; it shows the transducer’s accurate grade is qualified.
3
Transducer
U
X
4
Resistor