Download Pipe-Mounted Liquid Level Fiber Units

Pipe-Mounted Liquid Level Fiber Units
HPF-T032/T032E
HPF-T034/T034E
Fail-safe detection is available by using two different sensing
methods for the upper and lower limits on the level of liquid in a
tank.
An array of 16 optical axes eliminates the
effects of air bubbles and water droplets
PFA-jacketed fiber
Fits a wide range of pipe diameters.
Location of the optical axes is clearly marked.
FEATURES
Array of 16 optical axes eliminates
the effects of air bubbles and water droplets
PFA-jacketed optical fiber
Adverse effects from air bubbles and
water droplets are reduced, resulting in
reliable detection.
Fiber-optic cables protected by
chemical-resistant resin can be run
through machines and equipment
safely (HPF-T032 and HPF-T034
only).
Fail-safe concept
Lower limit detection
Upper limit detection
Required optical system
Abnormality
or
Liquid is present,
so no light
is received.
Broken fiber,
no light received
Required optical system
Abnormality
Models that receive
light when there is
no liquid
or
Liquid is absent,
so no light
is received.
HPF-T034
HPF-T034E
Broken fiber,
no light received
Models that receive
light when liquid is
present
HPF-T032
HPF-T032E
PRINCIPLE OF DETECTION
Operating principle of HPF-T032 and T032E
Operating principle of HPF-T034 and T034E
Liquid absent
Liquid present
(Colorless liquid)
Liquid present
Liquid absent
Light
received
Light
emitted
Light
received
Light
received
(Whitish liquid)
Light
received
Light
emitted
Light
received
Light
emitted
(When pipe contains air
bubbles or is clouded.)
Light
received
Light
emitted
Light reception is blocked when liquid is present, which prevents false
detection due to a change in the liquid’s color.
1
Light
emitted
Light
emitted
Clouding and bubbles reduce the level of received light, but thanks
to the operating principle (light = liquid present) they do not
increase the risk of false delection.
RECOMMENDED COMPATIBLE AMPLIFIER UNIT
HPX-AG02 (alarm output) model
Alarm output model (HPX-AG02)
<Exterior view>
This switch warns if the scanning conditions are unsuitable by
means of a second output (light-level drop alarm output).
Sample use: surface detection of liquids such as slurry
An alarm signal indicating a drop in the light level is output if the
inside wall of the pipe becomes dirty, averting potential problems.
<Operation panel>
After time passes
<Typical models>
Model No.
Output
HPX-AG02-1S
HPX-EG02-2S
NPN
PNP
Thru scan (Attached to pipe)
Type
Compatible
pipe dia.
Liquid-absent
received light
8~19 mm
(3/4B)
Cable
Shape
Bend radius
Free cut
HPF-T034E-L02
Free cut
Free cut
HPF-T032E
Polyethylene
2m
−30 to +70ºC
HPF-T032
PFA
5m
R4
3~13 mm
HPF-T034E
Polyethylene
2m
Model No.
HPF-T034
PFA
5m
R4
−30 to +70ºC
Liquid-present
received light
Length Coating material
HPF-T032E-L02
Free cut
Use with PFA transparent pipe with wall thickness of 1 mm.
Depending on the pipe actually used, as well as the liquid thru scan and refractive ratios, fiber unit detection may not be reliable, so be sure to test the operation before use.
If the fiber unit is used with other than the recommended pipe, material, or wall thickness, please test before use or consult our sales staff.
OUTER DIMENSIONS
HPF-T034
HPF-T034E
HPF-T034E-L02
(unit: mm)
12
36
*2
HPF-T032
HPF-T032E
HPF-T032E-L02
Model No.
HPF-T034
HPF-T034E
HPF-T034E-L02
28
5000 mm min.
Cable dia.*2
2×2.3
5000 mm min.
2×2.2
2000 mm min.
2×2.2
Cable length*1
23.4
*1
*2
13.1
32
20
21
12
Model No.
HPF-T032
HPF-T032E
HPF-T032E-L02
28
5000 mm min.
Cable dia.*2
2×2.3
5000 mm min.
2×2.2
2000 mm min.
2×2.2
Cable length*1
USAGE NOTES (TYPE-SPECIFIC)
Pipe-mounted liquid level detection
Attach the unit using the supplied cable ties and non-slip tubes as
shown here. Securely fasten both the upper and lower cable ties and
cut off any excess. Where additional cable ties are required, use ones
which are no more than 2.5 mm wide (dimension A in the figure).
A
* The supplied cable ties (with non-slip tubing) can also be
purchased separately.
Model: SZ-A01 (5 sets)
Before use, thoroughly read the “Precautions for use” and “Precautions for handling” in the Technical Guide
on pages A-141 to A-156 as well as the instruction manual and product specification for this switch.
2
*1