14
①
FLUID OUT
AIR SUP
AIR EXH
①
11. Sensor mounting (leakage sensor)
Series PAF can have a sensor for detecting diaphragm breakage. If fluid leaks in the pump
through the diaphragm, this sensor responded it, and detects diaphragm breakage.
<Mounting>
1. Remove the round head Philips screws below the AIR EXH port of the pump. Then, remove the
leakage sensor cover, plug, and O-ring (Fig. 1). The O-ring, leakage sensor cover, and round
head Philips screws are used again later. Do not throw them away.
2. Mount the O-ring again to the part from which it is removed, and insert two leakage sensors
there. Put the leakage sensor cover back to the part with the round head Philips screws
(tightening torque:
0.125N
･
m
) (Fig. 2).
3. Insert optical fibers to the amplif
ier, and set the amplifier to “Percent tuning”. At this time, the
ratio at the threshold level is set to
20~25%
(Note 1)
.
Name of components
①
O-ring
2pcs
②
Plug
2pcs
③
Leakage sensor cover
1pcs
④
Round head Philips screw
2pcs
⑤
Leakage sensor
2pcs
Note1 This value is a reference value. Please inquire of local supplier or SMC when you
cannot confirm operation even if the proportion at the threshold level is set.
Note2 Two sets of fluid-leakage sensor "KT-PAF3-47" are required for one pump.
Also, one piece of amp "HPX-EG00-1S-L02" manufactured by Azbil Corporation is required
for one sensor to detect the fluid leakage (two amps are required in total).
Note2)
Caution
Tighten two
④
round head Philips
screws with torque
0.125N
･
m
.
Fig. 1
③
FLUID IN
②
④
Fig. 2
⑤
③
④
