Technical data
91
Notes Notes
92
Use the following method to soften fiber head
vibrations.
6.
Do not use fiber units that are not protected by
fluoroplastic in environments with organic
solvents.
7.
Do not bend the tip or the base of the sleeve.
8.
10
10
A ring absorbs the vibrations
tape
Less than 90°
Do not bend these parts.
There are some opaque or viscous liquids that
NF-TF01/ -DF04/ -DF05 cannot consistently detect.
When mounting of NF-TF01/ -DF04/ -DF05 is not
good enough, it may not be able to detect objects
consistently. Use the anti-slip tube that comes with
the product to attach it to the pipe so that the detec-
tor does not move.
For consistent detection with NF-TF01, set amplifier
sensitivity after attaching fibers while there is no liquid
inside the pipe. You must reset sensitivity if you have
adjusted the fibers on the pipe and have changed
their position.
NF-DF04/ -DF05 cannot detect properly on opaque
pipes.
Attach the NF-DF04/ -DF05 detector firmly to the
pipe. It will malfunction if it is not attached firmly.
NF-DF04/ -DF05 is not water- or chemical-resistant.
Do not use it in places where it may come into direct
contact with water or chemicals.
Water droplets on the NF-DF04/ -DF05 detection
surface, water droplets that run into the pipe, and air
bubbles will affect detection. Check for condensation
on the outside of pipes.
Do not apply too much
torque to the sensor
head or use tools that
were not designed for
the nuts.
3.
Mount sensor heads according to the type of fiber
as shown in the diagrams below.
4.
Do not hit the detection
head surface against
anything or damage it
in any other way.
1.
Do not bend or twist the fiber head or use too
much force to move it.
2.
Cut the tips of cuttable fiber units with special fiber
cutters before attaching fiber amplifier when
needed.
5.
Cutting Instructions
1.
Make the fiber unit bending radius greater than
the allowable bending radius. Bending it too much
shortens the detection distance.
2.
Leave some straight line near the insertion part
and the tip of the fiber unit.
3.
The detection distance may drop 20% or so
because of the cut surface of the fiber or the
connection with the amplifier. We recommend
using the device at or below 80% of the detection
distance on the spec.
4.
In places with a lot of vibrations, mount the fiber
unit so that it does not vibrate. Pay special atten-
tion that the vibrations do not reach the connection
between the fibers and amplifier.
5.
General Precautions
Precautions for Fiber Units
Precautions for Fiber Cutters
nylon clip
fiber unit
Screw Cap Type
mounting plate
flat or cup-point set screw
(M3 or smaller)
lock washer
nuts(included with product)
Cylindrical Type Fluid Surface Detection
①
Adjust the length in
the direction of the
arrow and spin the
stopper to lock the
fiber.
②
Insert the fiber into
the fiber cutter and
cut it.
③
The diagram on
the right shows a
properly-cut fiber.
SICK
SICK
about 0.5mm
at least 20mm
at least 20mm
amplifer unit
Good No Good
No Good
No Good
No Good
No Good
No Good
No Good
No Good
Good
fiber unit
insertion direction
AmplifiersFlexible
Various Detecting Scheme
Environment-resistantLiquid
Extension lens
Various Shape for mounting
Notes
Amplifiers
Flexible
Various Detecting Scheme
Environment-resistantLiquid
Extension lens
Various Shape for mounting
Notes