Nohken FQ Manual de usuario
ＴＳ０２－０１８２
ＩＮＳＴＲＵＣＴＩＯＮ ＭＡＮＵＡＬ
FOR
CABLE SUSPENDED FLOAT SENSOR
MODEL: ＦＱ
Revision 2019-11-15
－ADD 1 －
Read and understand this manual for safely usage.
・This manual describes the product of standard specification. Read the other manual for
the product of explosion-proof specification.
・This manual describes the handling, inspection and adjustment of the product which
model is mentioned on cover page. Read and understand this manual before handling.
・Follow the additional document and/or direction, submitted by NOHKEN INC. and our
distributor or agent, even if the terms are mentioned in this manual.
・Save this manual in proper place being available to refer immediately.
・The specification of product mentioned in this manual may not be satisfied by the
condition of environment and usage. Check and consider carefully before using.
・Contact to sales office at NOHKEN INC. for any question or comment about this manual
and product.
The followings are the description of the terms in this manual.
WARNING Indicates a potentially hazardous situation which, if not pay
attention, could result in death, serious injury or serious
disaster.
CAUTION Indicates a hazardous situation which, if not pay attention,
may result in minor or moderate injury or damage to device.
Indicates prohibited matter. The explanation with this mark
shall be followed
Indicates instructed matter. The explanation with this mark
shall be followed.
－ADD 2 －
WARNING
This product is not explosion-proof construction. Do not install
this product to the place where the flammable gas or vapor is
occurred.
If installed, the flammable gas or vapor may be ignited, and
serious disaster may be occurred. Use the product of
explosion-proof construction in this case.
Do not modify or disassemble the product. Otherwise, the
product and connected device may be malfunctioned, damaged,
fired, or miner injury and electric shock may be occurred.
(Follow the additional document and/or direction, submitted by
NOHKEN INC. and our distributor or agent.)
Turn off the power, before wiring and inspection. Otherwise,
electric leakage, fire caused by short circuit, and electric shock
may be occurred.
Ensure the wire is properly connected. The product and
connected device may be malfunctioned, damaged, fired, or
miner injury and electric shock may be occurred by improper
wiring.
Turn off the power immediately, if the smoke, strange smell and
sound are occurred.
Do not use it until the problem is solved.
CAUTION
Avoid strong shock and rough handling to this product. The
product may be damaged by strong shock as dropping, falling,
throwing,
knocking, lugging, and etc.
Follow the specification of operating temperature, operating
pressure, switch rating, and etc. Otherwise, the product and
connected device may be malfunctioned, damaged, fired, or
miner injury and electric shock may be occurred. Check the
manual or specification sheet.
Operation test shall be done before practical usage. If the
serious accident is expected to occur by malfunction of product,
the other operating principle of product shall be installed in
parallel.
－ADD 3 －
CAUTION
Check and deeply consider the chemical compatibility for
material of product in advance. The part especially float, which
is very thin, may be malfunctioned by miner corrosion.
Check and deeply consider the chemical compatibility
for material of product in advance.
Hold the stem very close to mounting point, when carrying,
installing, and removing. If hold the terminal box, it may be taken
off from the flange or plug, and the product may be damaged by
dropping.
The product is 50cm or longer
The product shall be kept in horizontally. The product and other
goods be damaged, and miner injury may be occurred by falling.
Earth terminal shall be grounded to JIS Class D ground (earth
resistance less than 100Ω). If not grounded, electric shock may
occurred by any accident.
Provide arrester or surge absorber to avoid electrical impact
such as lightning and static electricity. If not provide, the product
and connected device May be malfunctioned, damaged, and
fired, or miner injury and electric shock may be occurred.
In case of connecting inductive or lamp load to the product.
Provide protective circuit to the load to avoid over voltage and
over current. If not provide, the contact may be damaged.
－ADD 4 －
INTRODUCTION
A) This manual specifies the specification of general product. If you order special product,
some details of specification may be different with the manual.
B) We are glad to suggest and advice for Model selection and chemical resistant of
material, but final decision has to be made by the customer.
C) This manual has prepared with close attention. Ask sales office at NOHKEN INC. for
any question or comment about the contents of this manual.
D) For replacement parts
The quality of product has frequently improved, so same spare part may not be
supplied. In this case, replacement part or product may be supplied. Ask sales office at
NOHKEN INC. for details.
E) The contents of this manual are subject to change any time without notice due to the
improvement of product.
WARRANTY & DISCLAIMER
A) NOHKEN INC. warrants this product against defect in design, material and
workmanship for a period of 1(one) year from the date of original factory shipment.
B) The warranty only covers the damage of products. The secondary and third kind
disasters are not covered by NOHKEN INC.
C) NOHKEN INC. shall not be liable for the following.
C-a) Do not follow the description and direction in this manual.
C-b) Damage due to improper installation, wiring, usage, maintenance, inspection,
storing, and etc.
C-c) Repair and modification are done by the person who is not employee of NOHKEN
INC. and our distributor or agent.
C-d) Improper parts are used and replaced.
C-e) The damage is occurred by the device or machine except our products.
C-f) Improper usage. (See "Proper of usage" in chapter 1 in this manual)
C-g) Force Majeure including, but not limited to, fire, earthquake, tsunami, lightning, riots,
revolution, war, radioactive pollution, acts of God, acts of government or
governmental authorities, compliance with law, regulation, and order.
THE TERMS OF WARRANTY AND DISCLAIMER SHALL IN NO WAY LIMIT YOUR
REGAL LIGHT.
ＴＡＢＬＥ ＯＦ ＣＯＮＴＥＮＴＳ
Page No.
1. PURPOSE OF USE ・・・・・・・・・・・・・・ 1
2. SPECIFICATIONS ・・・・・・・・・・・・・・ 1
2.1 Model ・・・・・・・・・・・・・・・・・ 1
2.2 Standard Specifications ・・・・・・・・ 1
2.3 Outline drawing ・・・・・・・・・・・・ 2
3．OPERATING PRINCIPLE ・・・・・・・・・・・・ 3
4．COMPONENT NAMES ・・・・・・・・・・・・・・ 4
4.1 External parts ・・・・・・・・・・・・・ 4
4.2 Terminal box internal parts ・・・・・・ 4
5. INSTALLATION ・・・・・・・・・・・・・・・ 4
5.1 Unpacking ・・・・・・・・・・・・・・・ 4
5.2 Assembly ・・・・・・・・・・・・・・・・ 5
5.3 Installation location ・・・・・・・・・ 7
5.4 Installation method ・・・・・・・・・・ 7
6. WIRING ・・・・・・・・・・・・・・・・・・ 8
6.1 Model RE relay unit ・・・・・・・・・・ 8
7. TECHNICAL NOTES ・・・・・・・・・・・・・・ 9
8. MAINTENANCE / INSPECTION ・・・・・・・・・ 9
9．TROUBLE SHOOTING ・・・・・・・・・・・・・ 10
-1-
１． ＰＵＲＰＯＳＥ ＯＦ ＵＳＥ
The Cable Suspended Float Sensor FQ series designed for level detection of sewage,
waste water and high viscosity of liquid as slurry, used a reed switch.
２． ＳＰＥＣＩＦＩＣＡＴＩＯＮＳ
２．１ Ｍｏｄｅｌ
ＮＯＴＥ : In case of a part of sensor, model are FQ-6, FQ-8 or FQ-8T.
２．２ Ｓｔａｎｄａｒｄ ｓｐｅｃｉｆｉｃａｔｉｏｎ
Table 1
Model ＦＱ６６ ＦＱ８８ ＦＱ８８Ｔ
Contact rating
Contact capacity Max. 50VA ,50W Min. 10μVA ,10μW
Working current Max. 0.5A AC,0.5A DC Min. 100μA AC,100μA DC
Working voltage Max. 300V AC,300V DC Min. 50mV AC ,50mV DC
Mechanical
characteristics
Withstand pressure
(static)
200 kPa Max.
(excluding process connection)
Shock resistance 100 m/s2500 m/s2
Float buoyancy Approx. 1.27 N Approx. 1.21 N
Operation
characteristics
Control width *1 0.27 to 1 m 0.33 to 4 m
Specific gravity 0.7 Min. 0.9 Min.
Service life 2×105times Min. (at cable bend 180°)
Working temperature (no freezing) -10 to +50
℃
-20 to +70
℃
Construction IP45
Materials Terminal box ABS
Flange PVC CPVC
Float PP ABS (sealing: NVR, Epoxy)
Cap
ABS
(sealing:
NBR, Silicone)
-----
Cable PVC sheath
Anchor weight PVC (inside: steel structure)
Rope PE
PEs
(core:
glass fiber)
Cable clip PVC
Mounting Flange: JIS 10K 100A or equivalent (4 holes)
Cable inlet G 3/4 or equivalent
*１ Reference with Fig. 12.
-2-
２．３ Ｏｕｔｌｉｎｅ ｄｒａｗｉｎｇ
Fig. 1 Model Ｆ Ｑ － ６
Fig. 2 Model FQ-8 & FQ-8T Fig. 3 Model FQ88-1
-3-
３． ＯＰＥＲＡＴＩＮＧ ＰＲＩＮＣＩＰＬＥ
In case of rising level, the float rises according to liquid level as shown Fig.
4(1) and turns over quickly on upper limit level of control width. Movable weight
travels from top to bottom inside the float and touch with permanent magnet.
Magnetized movable weight make reed switch actuate.
In case of falling level also, the float turns over quickly on lower limit of control
width. Movable weight travels from bottom to top inside the float and separates
from permanent magnet. The reed switch loses magnetic field and stops actuation.
The level switch is not affected chattering of liquid such as movable weight travels
on only both limits of control.
Having a function of holding as the explanation described above allow feed water
control or waste water control.
(1) At rising level (2) At falling level
Fig. 4 Operating principle drawing
-4-
４． ＣＯＭＰＯＮＥＮＴ ＮＡＭＥＳ
４．１ Ｅｘｔｅｒｎａｌ ｐａｒｔｓ
① Terminal box
② Flange
③ Eyebolt
④ Fulcrum
⑤ Cable
⑥ Float
⑦ Rope
⑧ Anchor weight
⑨ Cable inlet
⑩ Cable clip
Fig. 5
４．２ Ｔｅｒｍｉｎａｌ ｂｏｘ ｉｎｔｅｒｎａｌ ｐａｒｔｓ
Fig. 6
５． ＩＮＳＴＡＬＬＡＴＩＯＮ
５．１ Ｕｎｐａｃｋｉｎｇ
The Quick Float Model FQ series have been thoroughly inspected and carefully packed
at the factory to prevent from damage during shipment.
When unpacking, exercise due care not to subject the instrument to mechanical shock.
After unpacking, visually check the instrument exterior for damage.
ＮＯＴＥ the following points ;
(1) Do not bend and pull the cable extremely during installation.
(2) Make sure that the Quick Float is provided equipment according to ordering
specification.
(3) During installation, care must be taken not to damage cables with sharp objects.
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