Toshiba LQ300A00 Series User manual

6F8A0787
Operation Manual
For
The Insertion Type Density Meter
Type LQ300A00******
© TOSHIBA Corporation 2002
All Rights Reserved.

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■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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INTRODUCTION
Thank you very much for your purchase of the LQ300A00****** Density Meter.
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 LQ300A00****** 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.

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Safety Precautions
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, and/or equipment-only-damage, 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
ThissignindicatesPROHIBITION(Donot).Thecontentofprohibitionisshownbyapicture
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.
ThisshapeorsymbolindicatesWARNING.ThecontentofWARNINGisshownbyapicture
or words beside the symbol.
◆Color back : red, flame, picture and words : black
Thisshape orsymbol indicatesCAUTION. The contentof CAUTIONis shownby apicture
or words beside the symbol.
◆Color back : yellow, flame, picture and words : black
Red
Yellow
Red
Yellow

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Safety Precautions (Continued)
For a safe use of the LQ300A00****** 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
■The meter is heavy. To move them or
relocate them may need a qualified operator
forhandlingacrane,ahoistor atruck forsafe
operation.
DO
■Electrical and mechanical constructions
are necessary for the meter.
Please consult your vender or Toshiba
sales representative.
Inadequate construction can cause electric
shock and fire.
DO
■When hoisting this unit, use the hoisting
bands.
In addition, when hoisting the unit with
hoisting bands, tighten the bands so that the
bands will not be loosened or slipped off.
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:
lDusty place
lPlace where corrosive gases (SO2, H2S)
or flammable gases may be generated.
lPlace exposed to vibration or shock that
exceeds permissible level.
lPlace exposed to condensation due to
abrupt change in temperature.
lPlace too cold or hot for installation
lPlace too humid for installation
lNear an apparatus that generates strong
radio waves or strong magnetic field.
Otherwise,afireorequipmentbreakdown
or failure can occur.
DO
■Install the meter in a place that is good
for operation, maintenance and inspection.
Astumbleor anoverturncancauseinjuries.
Yellow
Red

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Safety Precautions (Continued)
WIRING PRECAUTIONS
WARNING
DO
■Besuretoinstallafuseandaswitch
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
groundingwireseparate fromthoseusedfor
power tools.
(With 100 Ohms or less ground resistance)
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 wire or 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
Yellow

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Safety Precautions (Continued)
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
duringmaintenance orinspection. Ifitis
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
■Donottouch the detector mainbody
during measuring fluid density.
The temperature of the detector main
body rises with fluid temperature.
Touching the detector main body
causes burns.
Thelabel shown at leftis placed near
eachterminalblockontheequipment
towhichpowerissupplied.Becareful
of electric shock.
Yellow

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Safety Precautions (Continued)
Limited Applications of the product
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.
•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 have serious effects, please consider special efforts to make the system safe
regarding the operation, maintenance and management of the system.
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.)

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[NOTE] Sign
In addition to the signs and symbols for safety precautions shown in the first several pages of the
manual, the following sign is also used.
♦ [NOTE] Sign
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]