Mianyang Weibo Electronic Co.,Ltd.
No.98 Youxian East Road, Youxian District, Mianyang City, P.R. China
Tel: 86-0816-2971265 Fax: 86-016-2281934
www.wbsensor.com [email protected]
6
6
(3)
Warming up the transducer for 3 minutes
(4)
Using output monitoring meter V1 to measuring the output of signal power
source instrument, set any input value which is within the measuring range of
the transducer Vr.(e.g. if input range is 100V, the output is 4-20mA ). the
expected output value Iz should be calculated as:
Iz = (20mA
－
4mA)
×
Vr/100V
＋
4mA
(5)
Using output monitoring meter V2 to measuring the output voltage V0 of the
transducer, the basic introduced error
γ
of the transducer should be calculated
as:
γ
= (Vo
－
Iz
×
250
Ω
)/[(20mA
－
4mA)
×
250
Ω
]
×
100
(6)
Repeating step (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.
Caution:
1.
Pay attention to the auxiliary power information, especially the auxiliary power grade,
and polarity, other wise will damage the product.
2.
Pay attention to the wire connection; wrong terminal connection will cause
malfunction of the product and even damage the product;
3.
Don’t dismantle the product, and carry with care to avoiding bump and fall of the
product;
4.
If the product has been using under the environment with strong magnetic field
interference, please pay attention to the shield of input wire, and the output signal wire
should be as short as possible. For product intensive installation, the space between
each product should not be smaller than 10mm.
5.
Only use identified terminals.
6.
There is no lightening strike prevention circuit design in this product. For out door and
Signal
Power
Source
Transducer
V
1
V
2
12
11
+
+
-
-
Auxiliary Power
10
+E
250
Ω
GND
3
1
