3rd Floor, building 1, Zaimao industrial park, Baoji road, Bantian, Longgang district,
Shenzhen City, China Post code: 518049
0
④
Release the spring pin and clip the transmitter on the
mounting rail.
1.2 Screw mounting method:
①
3mm diameter hole in the fixed plate according to the screw
hole position shown in Fig. 3;
②
Use the screw
Φ
3 to insert into hole and secure it.
2 Products factory has been accurately set according to the
"product standard". Apply power after determine the correct
wiring.
3
The maximum wire diameter of the terminal block is 2mm
(16-26AWG). Remove the 4mm ~ 5mm insulation layer from the
end of the mounting wire and insert it into the terminal block, then
tighten the screw.
4 Product supply power requires the isolation voltage
≥
2000VAC,
AC ripple <10mV. Multiple transducers can share a common set of
power supplies, but the power circuit can no longer be used to
drive relays and other can produce spikes in the load, in order to
avoid interference signal transmission to the transducer.
5
T
he transducers output 0-20mA (or 4-20mA), the RL standard is
≤
250
Ω
, and 0-5V voltage output RL standard is
≥
2K
Ω
, can
guarantee the output accuracy and linearity over the entire rated
input range.
8 Example of product accuracy level verification
1 According to the definition of the transducer terminal, connect
the test circuit as shown.
Figure 4, voltage output product accuracy test wiring diagram
Figure 5, current output product accuracy test wiring diagram
Note:
The voltage output measured with the Vo table, the current
output measured with the Io table;
2 The test shall be carried out under the following environmental
conditions:
Ø
Power supply: nominal
±
5%, ripple
≤
10mV;
Ø
Ambient temperature: 25
℃
±
5
°
C
;
Ø
Relative humidity: RH (45 ~ 80)%;
Ø
The accuracy is 0.05 above of the signal source and
measurement instrument.
3Power preheat 2min;
4 Voltage V input and monitoring methods:
①
A high-precision high-voltage meter calibrator can directly
input voltage V, and record the meter calibration instrument
display data.
②
If there is no high-precision voltage meter calibrator, but there
is a common meter calibrator, use high-precision multi meter
to monitor the output voltage V of the common meter.
5 Assuming the transmitter input is 0-300VAC, the output is
0-5VDC, given any input value V in the transducer range, the
theoretical output value (Vz) of the transducer is calculated as
follows:
Vz = V
÷
300
×
5V
If the output is 0-10V, then Vd = V
÷
300
×
10V;
If the output is 4-20mA, then Iy = 4+ V
÷
300
×
16mA;
If the output is 0-20Ma, then Iz = V
÷
300
×
20mA.
6
The monitoring table measures the DC voltage output value Vo
or the current output value Io and calculates the error between it
and the standard value according to the following correspondence
formula:
│
Vo-Vz
│≤
25mV is normal, or excessive (0-5V output, 0.5);
│
Vo-Vd
│≤
50mV is normal, or excessive (0-10 output, 0.5);
│
Io-Iy
│≤
80uA is normal, or excessive (4-20mA output, 0.5);
│
Io-Iz
│≤
100uA is normal, or excessive (0-20mA output, 0.5).
7
Repeat 5 and 6 two operations,
the resulting error value of each
point in each phase is within the specified accuracy range, the
transducer accuracy level is qualified
Note:
and other technical indicators of the verification method
detailed consultation with our company.
9 Notes
1
Please pay attention to the wiring on product label and the
output contact capacity.
2 Transducer for the integrated structure, not removable, and
should avoid collision and fall.
3
The transducers are used in environments with strong
electromagnetic interference. Standard precaution such as
shielding the input and /or output lines should be observed. All
Power
Supply
Power
Supply