Toshiba Density (Consistency) Meter LQ500 User manual

6F8A0521
OPERATION MANUAL
DENSITY METER
TYPE LQ500

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INTRODUCTION
Thank you very much for your purchase of the LQ500 Density Meter (Hereafter, LQ500).
This manual is prepared for people in charge of installation, operation or maintenance. The manual
describes the precautions in using the meter, and explains about installing, adjusting, calibrating and
maintaining the LQ500 meter.
Carefully read this manual before using the meter for efficient and safe operation. Always keep the
manual in a place where you can easily access.
◆About Safety Precautions
Carefully read the Safety Precautions that appear in the following pages before using the Meter.
The safety signs used in the Safety Precautions will appear again in the following sections for your
safety.
■Notice
1. Do not copy or transcribe this manual in part or entirety without written permission from Toshiba.
2. The manual is subject to change without notice.
3. Although we tried hard to make this manual error free, if you find any errors or unclear passages,
kindly let us know.

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Important information is shown on the product itself and in the operation manual to protect users
from bodily injuries and property damages, and to enable them to use the product safely and
correctly.
Please be sure to thoroughly understand the meanings of the following signs and symbols
before reading the sections that follow, and observe the instructions given herein. Keep the
manual in a place you can easily access to whenever you need it.
[Explanation of Signs]
Sign Description
WARNING
Indicates a potentially hazardous situation which could result in
death or serious injury, if you do not follow the instructions in this
manual.
CAUTION Indicates a potentially hazardous situation which may result in
minor or moderate injury*1, and/or equipment-only-damage*2, if
you do not follow the instruction in this manual.
Note 1: Serious injury refers to cases of loss of eyesight, wounds, burns (high or low temperature),
electric shock, broken bones, poisoning, etc., which leave after-effects or which require
hospitalization or a long period of outpatient treatment of cure.
Note 2: Minor or moderate injury refers to cases of burns, electric shock, etc., which do not require
hospitalization or a long period of outpatient treatment for cure; equipment damage refers
to cases of extensive damage involving damage to property or equipment.
[Explanation of the Symbols]
Symbol Description
This sign indicates PROHIBITION (Do not).
The content of prohibition is shown by a picture or words beside the
symbol.
This sign indicates MANDATORY ACTION (You are required to do).
The content of action is shown by a picture or words beside the symbol.
This shape or symbol indicates WARNING.
The content of WARNING is shown by a picture or words beside the
symbol.
◆Color back : red, flame, picture and words : black
This shape or symbol indicates CAUTION.
The content of CAUTION is shown by a picture or words beside the
symbol.
◆Color back : yellow, flame, picture and words : black
SAFETY PRECAUTIONS
Yellow
Red

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Contents
For a safe use of the LQ500 Density Meter, take precautions described in this manual and
observe ordinances in making the installation and operation. Toshiba is not responsible for any
accident arising from the use that does not conform to above.
INSTALLATION PRECAUTIONS
WARNING
DO
■Electrical work, installation
work are needed for the meter.
Please consult with the sales
agent youpurchased the meter,
some of the companies
specialized in this field or your
Toshiba representative.
If any of these work items is
performed incorrectly, this can
cause fire or explosion.
DO
■The meter is heavy. To move
the meter for relocation or
installation, a qualified operator
must handle it by using
equipment such as a truck, a
crane or a sling.
In addition, when you lift the
meter with its lifting bolts, make
sure the bolts have been
securely tightened to the end.
Overturning or dropping can cause
injuries or equipment failure.
DON’T
■Do not operate where there is
a possibility of leakage of
flammable or explosive gas.
A fire or explosion can occur.
CAUTION
DO
■Avoid installing the meter in
any of the following places:
Otherwise, a fire or equipment
breakdown or failure can occur.
lDusty place
lPlace where corrosive gases
(SO2, H2S) or flammable gases
may be generated.
lPlace exposed to strong vibration
or shock.
lPlace exposed to condensation
due to abrupt change in
temperature.
lPlace too cold or hot for
installation
lNear an apparatus that generates
strong radio waves or strong
magnetic field.
DO
■Install the meter in a place
easier for operation,
maintenance and inspection.
In addition, when you place the
meter temporarily in a stocking
area, make sure to execute fall
prevention measures.
Stumbling over the meter or a fall of
the meter can cause injury.
Red
Yellow
RF section
Detector
Applicator
Cure sheet
Roll-over
prevention
stopper
SAFETY PRECAUTIONS (Continued)

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WIRING PRECAUTIONS
WARNING
DO
■Be sure to install a fuse and a
switch to disconnect the
equipment from the power
source.
Failure to observe this can cause
electric shock or equipment failure.
DO
■Be sure to ground the
equipment using a grounding
wire separate from those used
for power tools.
(Grounding resistance: 100 Ωor
less)
Without grounding, electric shock,
malfunction, or equipment failure
can be caused by electric
leakage.
DO
■Make sure that the main
power line is off before wiring or
cabling.
Wiring or cabling without switching
off the main power line can cause
electric shock.
DO
■Use crimp terminals with
insulation sleeves for power
line and grounding wire
terminals.
A disconnected cable or wire from
the terminal or a loose terminal
can cause electric shock or
generate heat and cause a fire or
equipment failure.
DO
■Wiring and cabling should be
done as shown in the wiring and
connection diagrams.
Wrong wiring or cabling can cause
malfunctions, overheating, sparking,
or electric shock.
DON’T
■Do not wireor cable with wet
hands.
A wet hand can cause electric
shock.
The label shown left appears near a terminal block on
the equipment to which power is supplied. Take
precautions to avoid electric shock.
Yellow
Yellow
SAFETY PRECAUTIONS (Continued)
Yellow

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Contents
PRECAUTIONS REGARDING MAINTENANCE, INSPECTION,
AND PARTS REPLACEMENT
WARNING
DO
■Be sure to set the power
switch on the equipment to the
OFF position before doing
maintenance or inspection
inside the equipment or
replacing its parts.
Failure to observe this can cause
electric shock or equipment failure.
DO
■Be sure to set the power
switch on the equipment to the
OFF position before replacing
the fuse.
Failure to observe this can cause
electric shock.
DON’T
■Do not touch the terminal
block during maintenance or
inspection. If it is necessary to
touch the terminal block, set the
power switch on the equipment
to the OFF position in advance.
Failure to observe this can cause
electric shock.
DON’T
■Do not attempt disassemble
or modify the equipment.
Failure to observe this can cause
electric shock or equipment
failure.
DON’T
■Do not touch the detector
pipe when high temperature
liquid is flowing in the detector
pipe. The detector pipe also
gets hot from the flowing liquid.
Otherwise, a burn can result.
Yellow
Yellow
The label shown at left is
placed near each
terminal block on the
equipment to which
power is supplied. Be
careful of electric shock.
SAFETY PRECAUTIONS (Continued)
Yellow

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Limited Applications of the product
•This product is designed and manufactured for use in systems such as general industrial equipment
(food manufacturing line control, various process control, manufacturing line control water treatment
facility and so on). This product is not designed or manufactured for the purpose of applying to the
systems, such as shown below, which require the level of safety that directly concerns with human
life. When your use includes potential applications in those systems, contact Toshiba for consultation.
(Example)
•Main control system for atomic power generating plant/Safety protection system for
nuclear facilities/Other critical safety systems
•Medical control system for sustaining life
•This product is manufactured under strict quality control but components might fail and if this product
is likely to be applied to a system that concerns with human life or it is likely to be applied to a facility
that may cause serious effects, please give special consideration to make the system safe regarding
the operation, maintenance and management of the system.
•This product is not approved as an explosion-proof device. Do not use this product in an area of
explosive atmosphere (explosion protected area).
Liability Exemptions
•Toshiba assumes liability exemptions from the following examples.
•Damages caused by fire, earthquake, actions by third party, other accidents, abuse or
faulty use whether accidental or intentional by the user, or by other uses of abnormal
conditions.
•Damages or losses that are incidental to the use of or disuse of the product (loss of
business profit, interruption of business operation, etc.)
SAFETY PRECAUTIONS (Continued)

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Contents
When an explanation is made in the text regarding the Safety Precautions, the [NOTE] sign
shown below appears in the left margin of a page. The [NOTE] gives you directions to follow in
the following instances.
•To use product correctly and effectively.
•To prevent abnormal or degrading performance of the product.
•To prevent faulty actions.
•To store the product when you do not use the product for a long time.
[NOTE] Sign

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Be sure to observe following instructions in order to maintain the original performance of the
LQ500 Density Meter and safely use it over a long period of time.
•Toshiba is not held responsible for any fault or result caused by not observing the precautions
described in this manual or by not observing the laws or regulations in installing or using the product.
[NOTE] Do not install or store the product in the following places.
Otherwise, meter performance can deteriorate and malfunction, fault, or breakage can
occur. Place exposed to direct sunlight
Hot, humid place
Place exposed to severe vibration and shock
Place that can be under water
Place of corrosive atmosphere
[NOTE] Use a separate wire for grounding the meter. Do not share the same
grounding wire with other devices.
Otherwise, malfunction, fault, or breakage can occur.
[NOTE] Lay the output signal cable through their own conduit away from the AC power
cable and other sources of noise.
Noise can interrupt correct measurement.
[NOTE] Perform periodic maintenance and inspection.
A long period of reliable measurement requires periodic span calibration
[NOTE] Becarefulnottoletwaterormoistureintotheapplicatormount of the detector,
converter, or cable ends.
Water or moisture can adversely affect performance and shorten parts service life.
Close the covers and doors securely, and make the cable outlets airtight.
[NOTE] Turn on power when the meter is installed on metal pipe.
When you install or remove the meter, make sure to turn off power beforehand.
This can affect other equipment due to leakage of radio waves.
[NOTE] Do not remove the cover of the applicator mount of the detector as well as the
coverofthedetector RF section while the meter is in operation after power is
applied.
This can affect other equipment due to leakage of radio waves.
Important Notes of Use of LQ500 Density Meter
[NOTE] Do not step on any part of the density meter (applicator mount, converter for
example) when you do piping work. Do not place any heavy object on it.
Otherwise, deformation or fault can occur.
Important Notes of Use of LQ500 Density Meter