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YOKOGAWA vigilantplant DM8 User manual

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User’s
Manual
R
Model DM8
Vibration Type Density Meter
IM 12T03A01-02E
IM 12T03A01-02E
5th Edition
i
IM 12T03A01-02E
u Introduction
This manual describes the specications, installation, operation, maintenance, and
troubleshooting for the Model DM8 Vibration Type Density Meter. To use this manual
correctly, read this manual thoroughly.
This manual is applied to the following product.
Detector: VD6D (Style B), VD6DF (Style B), VD6DS (Style B)
Converter: DM8C (Style C)
Special Cable: DM8W (Style A)
For the Model VD6SM Sampling System, refer to IM 12T3S1-01E.
n Notes on Handling User’s Manuals
• Pleasehandovertheuser’smanualstoyourenduserssothattheycankeeptheuser’s
manuals on hand for convenient reference.
• Pleasereadtheinformationthoroughlybeforeusingtheproduct.
• Thepurposeoftheseuser’smanualsisnottowarrantthattheproductiswellsuitedtoany
particular purpose but rather to describe the functional details of the product.
• Nopartoftheuser’smanualsmaybetransferredorreproducedwithoutpriorwritten
consent from YOKOGAWA.
• YOKOGAWAreservestherighttomakeimprovementsintheuser’smanualsandproductat
any time, without notice or obligation.
• Ifyouhaveanyquestions,oryoundmistakesoromissionsintheuser’smanuals,please
contact our sales representative or your local distributor.
MediaNo.IM12T03A01-02E 5thEdition:Dec.2015(YK)
AllRightsReservedCopyright©2006,YokogawaElectricCorporation
5th Edition : Dec. 11, 2015-00
ii
IM 12T03A01-02E
u Safety Precautions
n Safety, Protection, and Modication of the Product
• Inordertoprotectthesystemcontrolledbytheproductandtheproductitselfandensure
safeoperation,observethesafetyprecautionsdescribedinthisuser’smanual.Weassume
no liability for safety if users fail to observe these instructions when operating the product.
• Ifthisinstrumentisusedinamannernotspeciedinthisuser’smanual,theprotection
provided by this instrument may be impaired.
• Ifanyprotectionorsafetycircuitisrequiredforthesystemcontrolledbytheproductorfor
the product itself, prepare it separately.
• BesuretousethesparepartsapprovedbyYokogawaElectricCorporation(hereafter
simply referred to as YOKOGAWA) when replacing parts or consumables.
• Modicationoftheproductisstrictlyprohibited.
• Thefollowingsafetysymbolsareusedontheproductaswellasinthismanual.
WARNING
This symbol indicates that an operator must follow the instructions laid out in this manual in order
toavoidtherisks,forthehumanbody,ofinjury,electricshock,orfatalities.Themanualdescribes
whatspecialcaretheoperatormusttaketoavoidsuchrisks.
CAUTION
This symbol indicates that the operator must refer to the instructions in this manual in order to
prevent the instrument (hardware) or software from being damaged, or a system failure from
occurring.
CAUTION
This symbol gives information essential for understanding the operations and functions.
NOTE
This symbol indicates information that complements the present topic.
n Warning and Disclaimer
The product is provided on an “as is” basis. YOKOGAWA shall have neither liability nor
responsibility to any person or entity with respect to any direct or indirect loss or damage arising
from using the product or any defect of the product that YOKOGAWA can not predict in advance.
5th Edition : Dec. 11, 2015-00
iii
IM 12T03A01-02E
u After-sales Warranty
n Do not modify the product.
n During the warranty period, for repair under warranty consult the local sales
representative or service ofce. Yokogawa will replace or repair any damaged
parts. Before consulting for repair under warranty, provide us with the model
name and serial number and a description of the problem. Any diagrams or
data explaining the problem would also be appreciated.
• Ifwereplacetheproductwithanewone,wewon’tprovideyouwitharepairreport.
• Yokogawawarrantstheproductfortheperiodstatedinthepre-purchasequotation
Yokogawashallconductdenedwarrantyservicebasedonitsstandard.Whenthe
customer site is located outside of the service area, a fee for dispatching the maintenance
engineer will be charged to the customer.
n In the following cases, customer will be charged repair fee regardless of
warranty period.
• Failureofcomponentswhichareoutofscopeofwarrantystatedininstructionmanual.
• Failurecausedbyusageofsoftware,hardwareorauxiliaryequipment,whichYokogawa
Electric did not supply.
• Failureduetoimproperorinsufcientmaintenancebyuser.
• Failureduetomodication,misuseoroutside-of-specicationsoperationwhichYokogawa
does not authorize.
• Failureduetopowersupply(voltage,frequency)beingoutsidespecicationsorabnormal.
• Failurecausedbyanyusageoutofscopeofrecommendedusage.
• Anydamagefromre,earthquake,stormsandoods,lightning,disturbances,riots,warfare,
radiation and other natural changes.
n Yokogawa does not warrant conformance with the specic application at the
user site. Yokogawa will not bear direct/indirect responsibility for damage due
to a specic application.
n Yokogawa Electric will not bear responsibility when the user congures the
product into systems or resells the product.
n Maintenance service and supplying repair parts will be covered for ve years
after the production ends. For repair for this product, please contact the
nearest sales ofce described in this instruction manual.
5th Edition : Dec. 11, 2015-00
Blank Page
1
IM 12T03A01-02E
Model DM8
Vibration Type Density Meter
CONTENTS
IM 12T03A01-02E 5th Edition
u Introduction ....................................................................................................i
u Safety Precautions .......................................................................................ii
u After-sales Warranty ...................................................................................iii
1. GENERAL .................................................................................................. 1-1
1.1 Standard Specications ................................................................................... 1-1
1.1.1 GeneralSpecications ....................................................................... 1-1
1.1.2 Detector .............................................................................................. 1-1
1.1.3 Converter Model DM8C ..................................................................... 1-2
1.1.4 Special Cable Model DM8W .............................................................. 1-4
1.1.5 Standard Accessories ........................................................................ 1-5
1.2 Models and Sufx Codes ................................................................................. 1-5
1.2.1 GeneralPurposeDetector ................................................................. 1-5
1.2.2 Flameproof Detector .......................................................................... 1-5
1.2.3 Sanitary Use Detector ........................................................................ 1-5
1.2.4 Converter ........................................................................................... 1-6
1.2.5 Special Cable ..................................................................................... 1-6
1.3 External Dimensions ........................................................................................ 1-7
1.3.1 Detector .............................................................................................. 1-7
1.3.2 Converter Model DM8C ..................................................................... 1-9
1.3.3 Special Cable Model DM8W ............................................................ 1-10
1.4 Cautions in Handling Flameproof, Explosion-proof Instruments ............. 1-11
1.4.1 OutlineofExplosion-proofInstruments ........................................... 1-11
1.4.2 LabelingtheExplosion-proofSpecications .................................... 1-11
1.4.3 Installation Area and Ambient Conditions ........................................ 1-12
1.4.4 ExternalWiringWork ....................................................................... 1-12
1.4.5 MaintenanceProcedure ..................................................................1-12
1.4.6 Repairs ............................................................................................. 1-12
2. PRINCIPLES OF OPERATION ................................................................. 2-1
2.1 Measuring Principle .......................................................................................... 2-1
2.1.1 Density Detector ................................................................................ 2-1
2.1.2 Density Converter .............................................................................. 2-1
2.2 Main Components ............................................................................................. 2-2
2.2.1 Density Detector ................................................................................ 2-2
2.2.2 Density Converter .............................................................................. 2-3
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IM 12T03A01-02E
3. INSTALLATION, PIPING AND WIRING .................................................... 3-1
3.1 Installation of Density Detector ....................................................................... 3-1
3.1.1 Mounting Density Detector ................................................................ 3-1
3.1.2 Sampling Unit for Vibration Type Density Meter ................................ 3-3
3.2 Installation of Density Converter .................................................................... 3-6
3.2.1 Installation Area.................................................................................. 3-6
3.2.2 Installation of Density Converter ........................................................ 3-6
3.3 Piping ................................................................................................................. 3-9
3.3.1 SampleLiquidConduit ....................................................................... 3-9
3.3.2 AirPipingforMaintenance ............................................................... 3-10
3.3.3 SteamPiping .................................................................................... 3-11
3.3.4 PipingforAirPurge .......................................................................... 3-11
3.4 Wiring ...............................................................................................................3-12
3.4.1 Wiring between Detector and Converter ......................................... 3-13
3.4.2 Wiring for Analog Output Signal ....................................................... 3-14
3.4.3 Wiring for Digital Output Signal ........................................................ 3-14
3.4.4 Wiring for Abnormal Status Contact Output ..................................... 3-15
3.4.5 WiringforPowerSupply .................................................................. 3-15
3.4.6 Wiring for Grounding ........................................................................ 3-15
4. OPERATION .............................................................................................. 4-1
4.1 Component Names and Function ................................................................... 4-1
4.1.1 Density Detector ................................................................................ 4-1
4.1.2 Density Converter .............................................................................. 4-2
4.2 Operation ........................................................................................................... 4-3
4.2.1 Operation Mode ................................................................................. 4-3
4.3 Preparation for Measurement .......................................................................... 4-7
4.3.1 CheckforPiping ................................................................................. 4-7
4.3.2 CheckforWiring.................................................................................4-7
4.3.3 MeasuringLiquidFlow ....................................................................... 4-7
4.3.4 TurningONthePower ....................................................................... 4-8
4.3.5 Data Input ........................................................................................... 4-8
4.3.6 PressureCompensation .................................................................... 4-9
4.4 Calibration ....................................................................................................... 4-10
4.4.1 Calibration with Standard Solution .................................................. 4-10
4.4.2 Calibration with a Sample ................................................................ 4-11
4.4.3 Calibration Error ............................................................................... 4-12
4.5 Operation ......................................................................................................... 4-12
4.5.1 OperationProcedure ....................................................................... 4-12
4.5.2 CheckofMeasuredDensityValue................................................... 4-12
4.5.3 Shutdown ......................................................................................... 4-12
5th Edition : Dec. 11, 2015-00
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IM 12T03A01-02E
5. MAINTENANCE ......................................................................................... 5-1
5.1 Daily Inspection/Maintenance ......................................................................... 5-1
5.1.1 Cleaning the Vibrator in the Detector ................................................. 5-1
5.1.2 ExchangeofDesiccantintheDetector ............................................. 5-1
5.2 Troubleshooting ................................................................................................ 5-2
5.2.1 CheckingtheVibrators ....................................................................... 5-2
5.2.2 CheckingtheRTD .............................................................................. 5-2
5.2.3 CheckingtheOscillationAmplier ..................................................... 5-3
Customer Maintenance Parts List .......................................... CMPL 12T3E1-01E
Customer Maintenance Parts List .......................................... CMPL 12T3H1-01E
Revision Information ...............................................................................................i
5th Edition : Dec. 11, 2015-00
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<1. GENERAL>
1-1
IM 12T03A01-02E
1. GENERAL
Densityisoneofthefundamentalphysicalquantitiesrequiredwhenthepropertyorcomposition
ofaliquidsampleisbeingdeterminedinindustrialprocesses.Especially,densitymeasurement
ofasampleliquidisindispensableinmanyindustriessuchaselectricmanufactures,chemical
industries,oilreneriesandfood-relatedapplications.
The Model DM8 Vibration Type Density Meter is a higher reliable meter full of operation and
maintenance functions. The meter consists of a detector and a converter. The detector has a
vibrator and an RTD (resistance temperature detector), and outputs detected density signal
(frequency)andtemperaturesignal(voltage)totheconverter.Theconverterisequippedwitha
microprocessortoconvertthefrequencysignalsfromthedetectorintodensityvaluesanddisplay
them. It also calculates the density at the reference temperature according to these signals and
digitally displays them. Moreover, the converter outputs digital transmission signals besides
analog transmission signals and is further provided with a variety of functions such as one-touch
calibration, self-diagnosis.
1.1 Standard Specications
1.1.1 General Specications
Measurementobject: Liquiddensity
Measurement principle: Vibration density measurement
Measurement range:
Density: 0.5 to 2.0 g/cm
3
Temperature: -10 to 100°C
DistancebetweenDetectorandConverter: Upto2km
Powersupply: 90to132VACor180to264VAC,50/60Hz
Powerconsumption: 20VA
n Characteristics
(overall characteristics after combing the detector and the converter)
Repeatability: 5x10
-4
g/cm
3
(for digital output)
1 % of span (for analog output)
Linearity: ±0.5 % of span (when span is 0.2 g/cm
3
or less)
±1 % of span (when span is more than 0.2 g/cm
3
)
Temperature characteristics: ±0.5 % of span/±10°C (Compensating error for changes in the
measuringliquidtemperatureanddetectortemperature)
Flow characteristics: ±0.1% of span in the 0 to 5 L/min range
Pressurecharacteristics: ±0.0005g/cm
3
/±98kPachange
Viscosityerror: ±0.1%ofspaninthe0to1500cPrange
1.1.2 Detector
(1) General Purpose Detector Model VD6D
Detectorconstruction: Non-explosionprotection,rain-proofconstruction
Case material: Cast Aluminum alloy
Casecoating: Epoxyresin,bakednish
Casecolor: Jadegreen(equivalenttoMunsell7.5BG4/1.5)
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-2
IM 12T03A01-02E
Wetted part materials:
Base: 316 SS
Vibrator: 316SSorNi(AuBrazing:BAu·4)
Measuringliquidtemperature: -10to100°C
Measuringliquidpressure: 2MPaGorless
Maximumpressure: 4.9MPaG
Steam tracing: Available
Processconnection: Rc1/4
Electrical connection: G3/4
Mounting: JIS 50A (2-inch) pipe mounting
Ambient temperature: -10 to 50°C
Weight: Approx.12kg
(2) Flameproof (Explosionproof) Detector Model VD6DF
Detector construction:
TIIS; d2G3 or
FM; Class I, Division 1, Groups C and D, Flameproof construction
Processconnection: Rc1/4or1/4NPTfemale(onlyforVD6DF-*B/FM)
Electricalconnection: G3/4or3/4NPSMfemale(onlyforVD6DF-*B/FM)
Specicationsarethesameasforthe(1)GeneralPurposeDetectorexceptfortheabove
construction.
(3) Sanitary Use Detector Model VD6DS
Processconnection: SpecialjointforconnectiontoJIS6Apipe(withingasket)
Wetted part materials: Added to the standard model
Gasket: Fluororesin(PTFE)
O-Ring: Fluoro rubber (FKM)
Streamtracing: Notavailable
Specicationsarethesameasforthe(1)GeneralPurposeDetectorexceptfortheabovetwoitems.
Temperature detector protecting tubes are detachable.
(Note):Thesedetectorscannotbeusedwithhighlycorrosiveliquidsandsolutionslikelytosticktosensors.Ifitisdesiredtobeapplied
tosolutionscontainingslurryorsludge,consultwithYOKOGAWA.FormeasuringNaOHsolutions,usesensorswithanickel
vibrator.
1.1.3 Converter Model DM8C
Display: Digitaldisplay,vedigitsLED
Display contents:
Density (g/cm
3
) after conversion to reference temperature (center temperature)
Density (g/cm
3
) at the measuring temperature
Measuringliquidtemperature(°C)
Setdensityvalueforthecalibrationliquid(g/cm
3
) (displayed on call)
T
emperaturecoefcientsetvalueforthecalibrationliquid(x10
-5
g/cm
3
/°C) (displayed on call)
Output signal set value (%) (displayed on call)
Setting for output range low limit (g/cm
3
) (displayed on call)
Setting for output range high limit (g/cm
3
) (displayed on call)
Reference temperature (center temperature) set value (°C) (displayed on call)
Temperaturecoefcientsetvalueforthemeasuringliquid(x10
-5
g/cm
3
/°C) (displayed on call)
Fault contents display
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-3
IM 12T03A01-02E
Output signal:
Analogoutput: 4to20mADC(loadresistance550Ωorless),and0to1VDC
(loadresistance250kΩormore),isolatedoutput.
Density (g/cm
3
) after conversion to the reference temperature
Digital output: RS-232C
(1) Communicationspecications
• Asynchronoussystem
Startbit;1bit,Stopbit;2bit,Parity;none
• Baudrate;1200bps
• Dataformat;ASCII,Datalength;8bit
• Wiringsystem;Two-wiresystem(outputonly)
(2) Output signal
• Transmittingcontents
Measured data; Density (g/cm
3
) after conversion to the reference temperature, density (g/
cm
3
)atthemeasuredtemperature,measuredliquidtemperature(°C)
Calibrationstate;calibrationstart,errorNo.,calibrationend
Failurealarm;errorNo.
• Signallevel
Outputvoltage;ON;6±1V,OFF;-6±1V
Outputimpedance;300Ω
• Outputformat
Measured data
space space
# * . * * * * _ * . * * * * _ * * * . * C
R
L
F
(Note):Dataareoutputintheorderofdensity(dataconvertedintothatatareferencetemperature),density(atmeasuringtemperature),
andmeasuringliquidtemperature.Holddata(dataimmediatelybeforeenteringthemode)isoutputduringthetimeofcalibration
ormaintenancemode.However,holdingisreleasedimmediatelyaftercalibrationormaintenancemode.
Calibration status
space
# CALIBRATION _ START C
R
L
F
(Note):Nothingisoutputduringcalibration.However,whenaparametererroroccurs,outputbecomesasfollows.
# ERROR - *C
R
L
F
(*: 5 or 6)
space
# CALIBRATION _ END C
R
L
F
(Note):IfthefunctionNo.keyispressedduringcalibration,calibrationiscanceled,andtheoutputbecomesasfollows.
space
# CALIBRATION _ CANCEL C
R
L
F
Fail alarm
space
# ERROR - * _ ERROR - * C
R
L
F
(Note):Whenmultipleerrorsoccur,eacherrorNo.fortherespectiveerrorsisoutput.
space
Example: # ERROR - 1 _ ERROR - 3 C
R
L
F
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-4
IM 12T03A01-02E
Output signal span: 0.05 to 0.5 g/cm
3
settable
Reference temperature set range: 0 to 100°C (in increments or decrements of 1°C)
Contact output on failure: One point. Contact closed on failure or power failure. Contact open when normal.
Permissiblevoltage: 220VDC,250VAC
Permissiblecurrent: 2A(resistiveload)
Permissiblecontactpower: 60W
Fault detecting contents: Detector failure and converter failure
Failure output:
Analog signal: Falls down to about -10 % of the output signal span
Digital signal: Error message outputs
Outputsignalhold: HoldsintheCAL.orMaintenancemode.
Settablerangefortemperaturecoefcient: 0to0.002g/cm
3
/°C
Calibrationprocedure: One-touchcalibrationbystrongcalibrationliquiddensity(one-pointcalibration)
Ambient temperature: -10 to 55°C
Powersupply: 90to132VACor180to264VAC,50/60Hz
Case construction: Dust and rain proof construction
EMC: Korea Electromagnetic Conformity Standard Class A
Coating color:
Door: EquivalenttoMunsell2.8GY6.4/0.9
Case: EquivalenttoMunsell2.0GY3.1/0.5
Coatingnish: Bakednishepoxyresin
Mounting: To panel, wall or 2-inch pipe
Airpurgeconnector: Rc1/8,Rc1/4,or1/4NPTfemaleisalsooptionallyavailable
Electrical connection: Five holes, 27 mm dia.
AttachedwithfourplasticwaterproofplugsequivalenttoJISA15,and
oneplasticwaterproofplugequivalenttoJISA20.
Weight: Approx.7.0kg
1.1.4 Special Cable Model DM8W
Type: Six-conductordoubleshieldcable
Insulator: Polyethylene
Sheath: Polyvinylchloride
Insulationresistance: 1000MΩ/km
Conductorresistance: 15.31Ω/km
Finished O.D.: 15.8 mm
Weight: Approx.0.3kg/m
5th Edition : Dec. 11, 2015-00
한국 전자파적합성 기준
A급 기기　(업무용 방송통신기자재)
　이 기기는 업무용(A급) 전자파적합기기로서 판매자 또는
사용자는 이 점을 주의하시기 바라며, 가정외의 지역에서
사용하는 것을 목적으로 합니다.
<1. GENERAL>
1-5
IM 12T03A01-02E
1.1.5 Standard Accessories
Detector (VD6)
Syringe(forinjectingstandardsolutionorsolvent) 1 pc.
Brush (for cleaning the detector) 1 pc.
Allenwrenchforterminalbox 1 pc.
Allenwrenchforlockingthecover 1 pc.
O-Ring 1 bag
Silica gel 2packs
Converter (DM8C)
Fuse for the converter (3A) 1 pc.
Ferrite cores *1
2 pcs.
Cable straps *1
4 pcs.
*1 : For /KC
1.2 Models and Sufx Codes
1.2.1 General Purpose Detector
Model Sufx Code Option Code Description
VD6D ••••••••••••••••••••• •••••••••••••••••• GeneralPurposeLiquidDensityDetector
Vibrator material -S3
-N1
••••••••••••••••••
••••••••••••••••••
316 SS
Ni
— *B •••••••••••••••••• Style B
1.2.2 Flameproof Detector
Model Sufx Code Option Code Description
VD6DF ••••••••••••••••••••• •••••••••••••••••• FlameproofLiquidDensityDetector
Vibrator material -S3
-N1
••••••••••••••••••
••••••••••••••••••
316 SS
Ni
— *B •••••••••••••••••• Style B
(Option) /FM NECClassI,Division1,GroupCandD,
explosion-proof
1.2.3 Sanitary Use Detector
Model Sufx Code Option Code Description
VD6DS ••••••••••••••••••••• •••••••••••••••••• SanitaryUseLiquidDensityDetector
Vibrator material -S3 •••••••••••••••••• 316 SS
— *B •••••••••••••••••• Style B
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-6
IM 12T03A01-02E
1.2.4 Converter
Model Sufx Code Option Code Description
DM8C ••••••••••••••••••••• •••••••••••••••••• VibrationTypeLiquidDensityConverter
Powersupply -A1
-A2
••••••••••••••••••
••••••••••••••••••
90to132VAC,50/60Hz
180to264VAC,50/60Hz
— *D •••••••••••••••••• Style D
(Option)
Air purge connector
/AP1
/AP2
/KC
Rc1/4
1/4NPTfemale
for Korea
*1: Be sure to select this if you want to use the converter in Korea.
1.2.5 Special Cable
Model Sufx Code Option Code Description
DM8W ••••••••••••••••••••• •••••••••••••••••• SpecialCableforLiquidDensityMeter
Cable length
-L
•••••••••••••••••• Length (unit: m)
— *A •••••••••••••••••• Style A
(Note):Enterthecablelengthin“-L in m.”
[Example] L0050for50m
L0100 for 100 m
L2000for2km
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-7
IM 12T03A01-02E
1.3 External Dimensions
1.3.1 Detector
General Purpose and Flameproof Detector Models VD6D and VD6DF
Unit: mm
246
100
192
ø110
104
153
342
100
78
200
G3/4 *2
58
ø160
146
ø116
ø74
Sample lnlet
Rc1/4 *1
Steam Connection Rc1/4 *1
Steam Outlet Rc1/4 *1
2-inch Pipe
(Horizontal or Vertical)
Electrical Wiring Port
For VD6DF-
*
B/FM
*1: 1/4NPT
*2: 3/4NPSM
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-8
IM 12T03A01-02E
Sanitary Use Detector Model VD6DS
Unit: mm
246
100
192
ø110
104
153
166
345
103
73
200
G3/4
58
ø160
146
ø116
ø74
Gland
Sample lnlet *1
Sample Output *1
2-inch Pipe
(Horizontal or Vertical)
Electrical Wiring Port
*1: The ends of sample inlet and outlet are connected with 1/8-inch
pipe in welding. The pipe may be removed by loosing the gland.
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-9
IM 12T03A01-02E
1.3.2 Converter Model DM8C
Unit: mm
23
14
31 35
272
240
183
138
116
212±1 222
275±1
200
288
34 34 34 34
Wiring port holes (5-ø27)
(with rubber plugs)
Purge air outlet
(with seal sheet)
Mounting pipe
(2-inch pipe)
Pipe mounting bracket
Purge air inlet Rc1/8 *1
Mounting bracket (applicable with any mounting
method to panels, walls or pipes)
Mounting panel thickness
Max. 12
*1: When option code is specified, Rc1/4 or 1/4 NPT female connector is attached.
Panel cutout dimensions
Wall mounting hole drilling dimensions
2-ø9 holes or M8 screws
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-10
IM 12T03A01-02E
1.3.3 Special Cable Model DM8W
Unit: mm
A4
A B
GRAY
YELLOW
BROWN
RED
RED
WHITE
WHITE
BLUE
BLUE
GREEN
GREEN
BROWN
YELLOW
GRAY
130(from A)
Density detector
(from B)100
Density converter
(from B)
80
(from B)
120
(from B)
110
(from B)100
(from B)90
(from B)80
110(from A)
110(from A)
110(from A)
60(from A)
60
(from A)
60(from A)
(Note) Cable length is specified by the suffix code of “-L”, is specified in meter.
e.g. for 50 m, -L0050
for 100 m, -L0100
for 2 km, -L2000
B4
B5
A2
A3
A5
A6
B4
B5
A2
A3
A4
A5
A6
ø15.8
Specified length
by “-L”
(Note)
5th Edition : Dec. 11, 2015-00
<1. GENERAL>
1-11
IM 12T03A01-02E
1.4 Cautions in Handling Flameproof,
Explosion-proof Instruments
1.4.1 Outline of Explosion-proof Instruments
Specicationsof“Explosion-proofInstruments”conformtotheregulationsofrelevantpublic
organizations.
ModelDM8VibrationTypeLiquidDensityMeterconsistsofadensitydetectorandadensity
converter.ModelVD6DFdensitydetector,explosion-proofinstrument,canbeinstalledin
hazardousareawhereexplosivegasesmaybegenerated.
It should be noted, however, that the method of installation, ambient conditions, and the handling
of these instruments must conform to the regulations of relevant public organizations. The
applicableexplosion-proofregulationsandthecautionsmarkedontheanalyzershallbestrictly
observed when using Model VD6DF in a hazardous location.
WARNING
ModelVD6DandModelVD6DSDensityDetector,whicharenot“explosion-proofinstrument”,
cannot be installed in hazardous location.
ModelVD6DFdensitydetectorhaseitherTIISorFMameprooftypeofexplosion-proof
specications.TheTIIStypehaspassedtestsconductedbyapublicauthorityinaccordancewith
theLaborSafetyandHealthLaw(Japan)whichregulatesdomesticexplosion-proofelectrical
equipment.TheFMtypehasbeencertiedtohaveanexplosion-proofconstructionmeetingthe
requirementsofNEC(NationalElectricalCode)byFactoryMutualResearchCorporation,U.S.A.
(FM),atestingorganization.ItalsoconformstorequirementsofOSHA(OccupationalSafetyand
HealthAct,U.S.A.).
Items 1.4.2 to 1.4.6 cover general cautions in using the Model VD6DF density detector. For
further details, see the following publications:
• ForTIISameproofrequirements
‘RECOMMENDEDPRACTICE’forElectricalEquipmentsforUseinExplosiveGas
Atmosphere published by The Research Institute of Industrial Safety, Ministry of Labor.
• ForFMFlameproofrequirements
NationalElectricalCode,Chapter5,SpecialOccupancies.
1.4.2 Labeling the Explosion-proof Specications
TIIS Flameproof type of explosion-protected construction
TheModelVD6DFdensitydetectorislabeleddataplateonwhichtypeoftheexplosion-
protectionconstructions,approvalnumber,symbolsforthetypeandworkingambient
temperature range.
Table 1.1 TIIS Flameproof Type (Explosion-proof) Construction of Vibration Density Detector
Model and codes Type Approval No.
Symbol for the type (including
explosion class and ignition group)
ModelVD6DF-N1
Model VD6DF-S3
No.T21726
No.T21727
d2G3
d2G3
FM Explosion-proof Specications
TheModelVD6DFdensitydetectorscomplyingwithFMexplosion-proofspecicationsislabeled
dataplatewhichismarkedwithanapprovalmark,classicationofhazardouslocation,working
ambient temperature range, and handling cautions.
5th Edition : Dec. 11, 2015-00
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