Features
No need the power supply when it works.
Bipolar excitation working
mode, the sensor outputs a pair of positive and negative electrical
pulse signal when the magnetic field polarity changes for a
circle.
Only when the external magnetic field polarity changes, magnetic
strength reaches the excitation threshold, the sensor will outputs
a pulse signal, so the vibration won\'t happen. The operation is
stable and reliable.
The signal amplitude has nothing to do with the magnetic field
changing speed, and it can work at the speed near to
zero.
The signal processing is simple, and it can be directly connected
with transistors, comparators, A/D converter, etc.
The output signal can be remote transmitted by the signal lines,
it\'s suitable for LAN management.
No mechanic contact, no spark, is a kind of intrinsic safety
devices.
Wide operating temperature range, strong environmental
adaptability.
Performance
Index
|
Name |
Symbol |
Value |
Unit |
|
Excitation strength |
Min. |
B |
3 |
mT |
|
Typ. |
5~6 |
|
Max. |
12 |
|
Pulse signal amplitude |
Vo |
≥1.5 |
V |
|
Pulse width(in the location of 1V) |
τ |
10~30 |
μS |
|
DC internal resistance |
Ro |
650~850 |
Ω |
|
Operating frequency |
Min. |
f |
unlimited |
kHz |
|
Max. |
10 |
|
Operating Temp. |
T |
-40~+125 |
ºC |
|
Outline Dimension and Typical installation location |
- |
See the figure |
- |
|
Sensitive silk location |
D |
2.5(distance to the bottom) |
mm |
|
Package |
- |
Aluminum shell, Epoxy potting |
- |
|
External lead |
- |
Resistance to high temperature soft wire |
- |
Sensor dimension and sensitive silk
location
Instruction
In the water meter application, the magnetic ring of φ9.5×φ6.0×3.5
mm can be used, it is magnetized in axial direction, a pair of
poles. The surface magnetic strength is more than 90 mT, the
installation distance from the surface of ring to the bottom of the
sensor is about 2.5mm.
Note: The sensor has certain requirements to the magnetic strength,
too strong or too weak magnetic field may affect its operation.(See
the excitation strength on "Performance index" )
If using other material and shape of the magnet, it needs to
measure its magnetic field, and adjust the installation
distance.
