Namur Standar:
In order to standardise the coupling of pneumatic
actuators with valve position signalling elements was
established the NAMUR STANDARD, which defines
four standards for pneumatic actuator, according to
the drawing below:
Types of Shaft:
For the sensor actuator to fit perfectly, this must have
the following characteristics:
Shaft Diametre:
The sensor actuator allows shafts from 11 mm to
45mm diametre.
Shaft Fitting:
The shaft must have a Tear
4mm wide and 4mm deep so the
shoulder of the actuator fits
perfectly.
Shaft Thread:
The shaft must preferably have
a threaded hole with M6 thread,
but it is believed threads M4 or
M5, however the driver is
provided with a M6x40 screw
with the actuator site and M6x30
visual signaling to the driver
without local visual cue and
shaft must have a hole deeper
than 20mm.
Shaft Height:
M32 line sensors are supplied
with 5 mm or 10 mm spacers, thus enabling the use of
actuators on shafts of different heights. The shaft
height should be adequate so that the driver does not
scrape the bottom of the actuator and not be
suspended, moving magnetic actuators from their
position in relation to the remote signalling sensor
targets.
Sense
3
Intelligent Valve Monitor
Atuador - Vista Superior
X
Y
Atuador - Vista Lateral
Z
4mm
4mm
M5
M6
Namur
1
2
3
4
DIM X
80 mm
130 mm
DIM Y
DIM Z
80 mm
130 mm
30 mm
30 mm
30 mm
30 mm
20 mm
30 mm
30 mm
50 mm
M5x8 (prof.)
11
m
in.
45
m
áx
.
4
4
M6x1
1
2
m
m
CLOSED
OPEN
Eixo do Atuador
Espaçador
Acionador
Espaçadores
Adicionais
5mm
10mm