Toshiba LF434 User Manual
TOSHIBA
6F8A07.70
ELECTROMAGNETIC FLOWMETER
MODEL LF434/LF404
INSTRUCTION MANUAL
-TOSHIBA COHRORATION
TOSHIBA
NOTICE
Tills M^iuiol is desigiisci to assist in installing, operating, and inainLaining the
LF434/lT4()4dt:clromagneric flowmeter- For safety reasons, and to obtain the opti
mum pcrtormancc from Ihe flowmeter, read this Manual thoroughly before w'orking
with the product. Keep the Manual within easy reach for reference whenever needed.
The flowmeter to which this Manual refers is NOT designed for applications in which
the functioning of this product is critical to human safety, such as:
♦ Main control systems of nuclear power plants; safety systems in nuclear facilities
• Control systems of medical equipment, including life support machines.
6F8.A077 0
or other critical control lines directly affecting human safely.
NOTES
1. The reproduction of Ihe contents of this Manual in any form» w'hether wholly or in part» is
not permitted without explicit prior consent and approval,
2. The information contained in this Manual is subject to change or review' without prior
notice.
3. Re sure to follow all ,safeiy, operating and handling precautions described in this Manual
and the regulations in force in the country in which this product is to be used,
HART is a registered trademark of the llAR'l’ C’omniumcatioii Foundation.
Teflon is a registered trademark of the DuPont Company.
I’hird Edition
October.
© Copyright 1999» 2000 by Toshiba Corporation, All rights rc,scrved.
2im
TOSHIBA
SAFETY PRECAUTIONS
Siifeiy signs and InhcJs affixed to Ihc product iUid/ur dcscribetl in Ihis manual give imporLaiU
inibrmation for using the produci saldy. I’hcy help prevent damage lo property and obviate
hazards for persons using the product.
Make yourself familiar with signal words and symbols used for safety signs and lab els/Then
read the safely precautions that follow to prevent an accident involving personal injuiy>
death or damage to [>ropcrty,
IvxplaDation of signal words
'flic signal word or words are used to designate a degree or level of hazard seriousness,
I’he sigrial words used for the product described in this manual arc WARNING and
CAUTION,
A WARNING
6F8A0770
Indicates a potentially ha/ardous situation
which, if not avoided, could result in death or
‘icrious injury,
Safety symbols
Indicates n potentially iiazardous silualion
A CAUTION
The following symbols arc used in safely signs and labels affixed to a product and/or in the
manual for giving safely inslniciioiiM.
Indicates an action that is prohibilud. Simply [DON’T do this action,
The prohibited action is indicated by a picture or text inside or next to
0
•
A
the circk
Indicates an action that is mandatory, DO this action.
The mandatory action is indicated by a picture or text inside or next lo
the circle.
Indicarcs a poieniial hazard, The potentially hazardous situation is
indicated by a picture or text inside or next to (he triangle.
which, if not avoided, may result in minor to
moderate injuries or in properly damage.
- 2 -
TOSHIBA
SAFETY PRECAUTIONS
Safety Precautions for Installation and Wiring
Zh WARNING
Do not disconnect while circuit \s iive onlcss locution is known to be nonhazardous.
6F8A0770,
0
DONT
I Do not modify or disassemble the enclosure.
DONT
Do not use parts of other products.
0
DONT
Do not live circuits While assembly of all components is not over.
0
DONT
Install per the National Electrical Code for the UгS (NEC, ANSI/NFPA 70)
and the Canadian Electrical code for Canada (CEC, CAN/C5A-C22.1).
O
DO
Live part of electric circuit ot a high temperature department can cause
explosion.
Strength degradEilion and defects of enclosure can cause explosion,
Protective pcrformiincc degradation for hazardous location can cause
explosion.
Protective performance degradation for hazardous location can cause
explosion.
Unsuitable conduit connections for hazardous location can cause ex
plosion.
A CAUTION
■ Turn off maius power before working
on pipes«
A Working on pipes vvhiJc
power is applied can cause
QQ electric shock.
■ Install a switch and fuse to isolate the
LF434/LF404 from mains power.
A A Power supply from mains
power can cause electric
DO t>reakdow n.
■ Use an appropriate device to carry
and install the LF434/LF404.
If this product falls to the
ground^ injury, or malfunction
of or damage to the product,
can be caused.
■ Do not modify or disassemble the
LF434/LF404 unnecessarily.
Modifying or disassembling
( jy [his product can cause electric
nOisf’T
- 3 “
shock, malfunction of or
’ damage to this product. |
TOSHIBA
SAFETY PRECAUTIONS (contiaued)
Safety Precautions for Maintenance and Inspection
âs CAUTION
■ Turn off mains power before
conducting wiring work.
Wiring while power is applied can cause electric shock,
DO
■ Do not conduct wiring work with bare
hands.
Rcma i n i n g cJ cetr ic charge
( even if pov-'cr is turned off
^ can still cause electric shock.
DONT
■ Do not work on piping and wiring with
wet hands.
Wet hands may result in
f electric shock,
DON'T
■ Do not touch the flowmeter main
body when high temperature fluid is
being measured.
The fluid raises the main
i body temperature and can
^ cause bums when touched.
DON’T
■ Do not conduct wiring work with wet
hands.
1^0 Wet hands may result in
elccrric shock.
DONT
■ Do not use a fuse other than the one
specified.
Using a fuse other than the
j one specified can cause
j/ system failure, damage or
malfunction,
DONT
■ Ground (he LF434/LF404 indepen
dently from power equipment.
PQ shock or malfunction.
■ Use compression terminal lugs with
insulation sleeve for the terminal
block and GND terminal.
/ i \ (A black border and symbol on
■ Do not conduct wiring work when
power is applied.
I can cause electric shock,
DONT
* near the terminal board for
Use a rated fuse as follows:
Fuse rating:
^ lA/^.'inV for lilt) to 240Vac or 1 liiVdc
* 2A/2.^0V for 24 Vdc
Dimensions:
Diameter
Melting time characteristic:
6F8A07 7 0:
Operating this product without
grounding can cause electric
1.0QSC connections can cause
electric shock, fire from
excessive current or system
malfunction.
The label shown left is placed
near the terminal board for
power input.
yellow triangle)
Be alert to electric shock.
Wiring while power is applied
1 be label shown left is placed
power inp ut.
\ (A black border and symbol on
yellow triangle)
Be alert to electric shock.
5.2
mm x 20 mm
Normal blow j
Disclaimer
Toshiba does not accept liability for jny damage or loss, material or personal, caused as a
direct or indirect result of the operation of this product jii connection with, or duo to, llie
occurrence of any event of force majenre (including fire or earthquake) or the misuse of
this product, whether inicnclonal or accidentaL
- 4 -
TOSHIBA
Handling Precautions
■ Jo obtain the oplimum performance from the LF434/LF404 flowmeter for years of
coniinLous operation, observe the following precautions.
(1) Do not store or instafi the flowmeter in:
(2) Execute wiring securely and correctly.
.6.F8A0 770
• places w here there is direct sunlight. If this is unavoidable, use ait appropriate
sunshade.
• places where excessive vibration or mechanical shock occurs,
• places where high temperature or high humidity conditions obtain.
• places where corrosive atmospheres obtain.
• places submerged under water,
To put the flowmeter temporarily on the floor, place it carefully wnth something to
support it so that the flowmeter will not topple over.
Ground the flowmeter with 100 ohm or less ground resistance. Avoid a common
ground used with other equipment where earth current may How. An independent
ground is preferable
(3) Seal the cable thoroughly at the cable gland so that the cable is kept airtiglit. 1 he
apparatus should not be provided with the cable gland. Please prepare yourself for
the cable glands w'hicb could be used in Division 2 hazardous locations.
(4) Make sure the fluid to be measured will not freeze in the detector pipe. This can
cause damage to the detector pipe.
(5) Select apprupriate welted materials suited for the process fluid to he measured.
Otherwise, fluid leakage due to corrosion can be caused.
(6) The converter housing covers are tightened securely at the time of shipment. Do
not remove these awers or glands unless it is necessary to wire new cables or re
place old ones. Otherwise, gradual deterioration of circuit isolation or damage to
this product can be caused. Tighten the covers securely again if they have been re[iioved.
L
“
5
-
TOSHIBA
Handling Precautions (continued)
j (7) Observe the following preenulions when you open the converter housing cover:
• Do not open the cover in .he open air unprotected ngninst rain or wind, J his
cun cause electric shock or cause damage to the ilowmetcr elccironics.
* Do not open the cover under high ambient temperature or high humidity
conditions or in corrosive atmospheres^ This can cause deterioration of
system accuracy or cause damage to the flowmeter dec ironies,
(B) This product may cause interference to radio and television sets If they are
used near the installation site. Use metal conduits etc, for cables to prevent
thi.s interference.
(9) Radio Iransmiilers such as tran.sceivers or cellular phones may cause interference
to the ñowmcter if they are used near the installation site. Observe the following
precautions when using them:
• Do not use a radio transmitter while the cover of flowmeter converter is open.
• Do not use a tran.scciver whose output power is more than 5 W.
• Move the antenna of a ratio transmitter at least 50 cm away from the flowmeter
and signal cables when using it.
• Do not use a radio traiismitler near the ñowmeler while it is operating online.
The transmitter's output impulse noise may interfere with the flowmeter.
• Do not install a radio transmitter antenna near the flow'meier converter and
signal cables.
,6F8A0770
(10) For reasons of flowmeter failure, inappropriate parameters, unsuitable cable con
nections or pCHjr installation conditions, the flowmeter may not operate properly.
To prevent any of these problems causing a system failure, it is recommended that
you have preventive measures designed and iitstallcd on the flowmeter signal re
ceiving side.
- 6 “
TOSHIBA
Table of Contents
678A0770
SAFETY PRECAETfONS
Handimg Precautions ........................................................
1, Product Inspection and Storage ...............................
1.1 Product Inspection ...................................................
1.2 Storage .....................................................................
2, Overvie>v ....................................................................
3, Names of Parts
...........................................................
4, Installation ..................................................................
4.1 Location ...................................................................
4.2 Mounting Procedure.................................................
4.3 Piping Connections
.................................................
5, Wiring .........................................................................
5A
Cables
5.2 External Device Conncc.ions and Grounding
5.3 Digital I/O Connections
5.4 Wiring Procedure ......................... ‘ '
.....................................................................
......................
6, Operation ................................................
6.1 Preparatory Check
6.2 Zero Adjustment
7, LCD Display and Controls
7.1 Outline
7.2 Display Formal
7.3 Basic Operations .................................................
7.4 Configuralion Items Selection Table ' ■
7.5 Password Input
................................................
8» Configuration Parameter Setting
8.1 Configuration Items ............................................
8.2 Checking or Changing Parameters
..............................
.................................
...................
...................................................
...................................................
..........................
.....................
9. Calibration .............................................................
9.1 Calibration Items
9.2 Calibration Using Converter Signal Source
................................................
■ 2
-■5
■
9
10
11
14
15
' 16
' 20
‘ 25
■ 27
■ 27
29
’ 30
■ 32
' 32
33
‘ 34
34
■ 36
■ 38
‘ 44
■ 45
^ 46
■ 46
■ 46
103
103
104
9
g
-
7
-
TOSHIBA
6F8A0 7 7 0.
10, Digital I/O Functions
10.1 Digilai I'O Spccjficaiians '
L0,2 Totalizer and Pulse Output
10.3 Multi-range Functions ■ ■ ’
10.4 High and Lou Limit Alarms
10.5 Empty Pipe Alarm
10.6 Preset Point Output
10.7 Remote Zero Adjustment
10.8 Remote Selection of Fixed Value Output
10.9 Converter Failure Alarms ................................
tl. Communications Function
11.1 Communications with the AFIOO Terminal
11.2 Communications Procedure
1 L3 Cautionary Notes on Communications ‘ '
12, Self-Diagnostics and Alarms
12J Self-Diagnostics
12.2 Output Status for Errors and Alarms
13, Maintenance and Troubleshooting
13.1 Maintenance
...................
.....................
.................................
...................................
..............
........................................................
.........................
................................
...........
.............
...................
13.2 Troubleshooting
14, Principle of Operation
...................
....................
15, Specifications ..............................
15.1 Flowmeter Specifications
15.2 Type Specification Code
16, Outline Dimensions .
.................
Appendi\ 1. Electromagnetic Compatibility and Low Voltage Safety ’
Electromagnetic Compatibility
Low Voltage Safety ^ ^ ■ ■ ■ ■ ►
- 8 -
TOSHIBA
1, Product Inspection and Storage
i;pon arrival of The product piickfige» open [lie package and check the items contained inside,
If you do not intend to install the product soon after opening llie package, store the product
and other related items in a place such as described in 1.2 below,
IJ Product Inspection
The LE^34/LF404 electromagnetic flowmeter is shipped in a cardboard cnniaincr filled with
shock-ahsorbing materials. Open the package carefully and check as follows:
■ Make sure the following items are included in the package.
(1) Model LF434/LF404 Electromagnetic Flowmeter,.,.,, i
(2) Instruction Miitiual ..............................................................
■ Inspect the flowmeter for indications of damage that may have occurred during shipment.
■ Make sure the type and spedficalions of the flowiiieter arc in accordance with the
ordered specifications,
If you cannot find the items listed above or any problem e?(ists, contact your nearest
I’oshiba representative,
6F8A0770
j
1,2 Storage
To store the LF434/LF404 flowmeter after opening the package, select a
storing place as follows and keep it under the conditions described below;
(1) Avoid places where there is direct sunlight, rain or wind.
(2) Store the product in a wcll-veniilated place. Avoid places of extremely high
humidity or extremely high or low temperature. The following cnvlroiitucnt is
recommended;
« Humidity range: 10 to 9i)% RH [no candensation)
• Storage temperature: -15 to +65* C
(2) Avoid places where vihralions or mechanical shock occur.
(4) Do not leave the converter housing cover open . Open the cover only w-hen
you actually start wiring cables. Leaving the cover open catt cause gradual
dctcrioraiion of circuit isolation,
(3) To pm the flowmeter temporarily on the floor, place it carefully with something
to support it so that the flowmeter will not topple over
- 9 -
TOSHIBA
2. Overview
6F8A0770
The LF434/1P4U4 elecLromagnetic flowmeter can be use in the following hai:afdoLis (clas
sified) loc;iLions.
(1) FM Approval
Gass I j Division 2, Groups A, C, C and D,
Class II, Division 2, Groups P and G
Class in
(2) eSA Ccrtifieation
Class I , Division 2, Groups A. B, C and D,
Class n , Division 2, Groups R, i- and G
GassU
rhe device measures the volumetric flow rates of electrically conductive materials on
the basis of Faraday's Law of electromagnetic induction.
The device consists of two units: Ue detector, through which the fluid to be measured
flows, and Ihe converter, which receives the elcciromotivc force signals from tiie
detector, then converts the signals into the 4—20 mAdc signal.
Features
Model 1F434/LF404 flowmeter has the following features:
(1) Fluid flow is not obstructed and pressure loss is negligible.
(2) Toshiba’s original noise-suppression circuit with signal processing
Ccipcibililics ensures a stable outpul.
(3) lias no moving parts and How indication is quick with high accuracy even under low
flowrate measurement conditions,
(4) No obstacles in the flow stream ami nowhere remains the fluid along the detector
pipe. Thus deterioration or corrosion of fluid does not occur,
(5) High accuracy, ±0.5% of rale is possible for 0,3-10 rrv’s velocity range. (). I to 0.3
m/s range is available optionally.
(6) 'I'he flowmeter has various How measurement outpul and control functions as
standard specifications and the optional IXD display for convenient parameter
settings.
' These funciions can he selected with control keys on the panel.
(8) Intelligent functions
* The widely used HART [protocol communications system is used as a standard
feature. HART (Highway Addressable Remote Transducer) is a commtmications
protocol for industrial sensors recommended bvHCF (HART Communication
Foundalion).
(9) An casy-to-rcad LCD display (2-iine x 16-character display) (optional)
* The backlit LCD display can be read even under poor lighting conditions.
- 1 0 -
TOSHIBA
3. Names of Parts
Tht: oulliEie drawing of ihe LF434/LF404 ilowm&ter is shown in Figure 3,1 and the in-
______________
IMPORTANT
The apparatus should not be provided with the cab'c glands.
Please prepare yourself for the cable glands which could be used in Division2 hazardous locations.
tcrnal views of the LF4[14 converter are shown in 1 ifiiires 3,2 and 3.3,
Outline Drawing
_______________
6F8A0770
- M -
TOSHIBA
Terminal Board ol'LF404 Converter
.6F8A07 7 0
Power supply lerminal:^
interna] gi\>uniJing terminal
Figure 3.2 Terminal Board of LF404 Converter
- 1 2 -
TOSHIBA
Control switch or keys of LF404 Converter
6F8A0770
LF4M v^ithout LCD Display
LF4(W wilh TXD Display
LCD display
Control keys
Figure 33 Control switch or keys of LF404 Converter
-
13
-
TOSHIBA
4. Installation
Safety Precautions for Installation
Do not live circuits under environmeiu of explosive aimosphcrcs.
6F8A0770
A WARNING
0
DON’T
Do not use parts of other products.
0
DON’T
l>o not Jive circuits While assembly of all components is not over.
0
DON’T
Install per the National r.lectricnl Code for the US (NEC, AN\SJ/NFPA 70)
and the Canadian Electrical code for Canada (CEC» CAN/CSA-C22»!).
O
DO
Live part of electric circuit or a high tompcralure department can
cause explosion.
Protective performance degradation for hazardous locatinn can
cause explosion.
Protective performAnce degradation for haijardous location can
cause explosion.
Unsuitable conduit connections for hazardous location can cause
explosion.
A CAUTION
■ Install a switch and fuse to isolate
the LF434/LF404 from main power.
Power supply from main
power can cause electric
shock or ci rcu It
DO breakdown.
■ Use an appropriate device to carry and
install the LF434/LF404.
If his product falls to the
ground, injury, or
malfunction of or damage to
PQ the product, can he caused.
■ Do not modify or disassemble the
LF434/LF404 unnecessarily.
Modifying or
disassembling this product
1 jjw can cause electric shock,
malfunction or damage to
DON’T this product.
■ Do not work on piping and wiring
with wet hands.
Wet hands may result in
V Jy electric shock
DON’T
- 14 -
■ Ground the LF434/LF4M
independently from power equipment.
Operaliiig this product without
grounding can cause electric
0 Q sh ock or m a Ifu notion.
1 he label shown left is placed
near tile terminal board for
power input.
/ J \ (A black border and .symbol on
yellow triangle)
be alert to dcctric shock.
TOSHIBA
4.1 Location
6F8A077.0
['ey
fielect the inslallatioi] site, follow the precautions described below:
■ Avoid places where fluid runs in a pulsating form.
■ Avoid places within the immediaic proximity of equipment producing declricul
inleгf^^rencc (such as motors, transformers, radio irunsmittcrs, electrolytic ceils, or
other equipment causing electromagitclic or electrostatic interference),
■ Avoid places where excessive pipe vibration occurs.
■ Avoid places where there is direct sunlight. !f this is unavoidable, use an appropriate
shade
■ Avoid places where corrosive atmospheres or high humidity conditions obtain,
■ Avoid places of too great an elevation or constricted areas where clearance
for installation or maintenance work is not provided,
■ Design piping so that the dcicetor pipe is always filled with fluid, whether the Quid is
flowing or not,
■ The LF434 detector has no adjustable piping mechanism. Install an adjustable short
pipe w'here needed.
■ Chemical injections should be conducted on the downstream side of the flowmeter.
- 15 -
TOSHIBA
4*2 Mounting Procedure
6F8A0770
A CAUTION
■ Use ati approprìate devìce lo carry
and instali thè LF434/LP404*
_ If his product fallii to thè
A & g round, i nj u ry, of
malfuiiction of or damage
DO lo thè produci, can be
caused.
4*2,t Pipe checks
Before installing pipes, cheek for iuiy leanitig or misplacement (or eccentricity) as
iJlusitratcd in Figure 4.1. An attempt to unreasonably connecting pipes that are inclined
may lead to a detector breakdown or fluid leakage. Connecting pipes in an eccentric state
may also cause local wears and tears of linings and grounding rings, as well as
measurement errors.
Before installing pipes* make sure to flash the interior of the pipes to remove deposited
matters.
■ Tum off mains power before
working on pipes.
Working on pipes while
power is applied can
cause
electric shock*
DONT
(a) Pipe leaning (b) Pipe axis misplacement (or eccentricity)
Figure 4.1 Pipe leaning and axis misplacement
- 1 6 -
TOSHIBA
4.2.2 Installation Procedure
IMPORTANr
When high-temperuiure fluid is being measured, radiant heal from the detector pipe surface
and adjoining pipes may cause the ambient temperature of the converter to go above 6t)
If the ambient lemperature goes above 60° C, try to lower the temperature by measures such
as wrapping heat-insulating materials over the detector pipe and adjoining pipes.
6F8A0770
To mouiu thu LF434/J.F404, plai:c il between Itic upstream and downstream pipe flanges
and tighten it with flange holts and nuts. See f igure 4,2 t Tablc4,1 and follow ihe
procedure below:
1. Place one of the flange packing next to the upstream (or downstream) pipe llattge. Altgi^
the holes of the packing with those of the flange so that the holes arc not obstructed.
2, Insert the Lh’434 detector in pipeline in accordance with the flow direction arrow on the
detector.
3, Insert the bolts, one at a time, through the hole in the upstream (or downstream) pipe
flange and packing, and then through the hole of the detector flange. Then thread nuts,
one at a time, on each end of the bolts, finger-tighten. This will help support the detector
on one side.
4, Insert the downstream (or upstream) packing between the detector flange and the down
stream (or upstream) pipe flange. Align the holes of the packing with those of tlie flanges
so that the holes are not obstructed.
5. Inert the bolts, one at a time, through the hole in the downstream (or upstream) pipe
flange and packing, and tJien through the hole of the detector flange. Then thread nuts,
one at a time, on each end of the holts, finger-tighten. This will help support the detector.
6. While centering Ihe detector with ihe longitudinal axis of the pipeline, tighten the bolts
with a wrench diagonally across in even increrr^nis
______________________________
Figure 4,2 LF434/LF4Ü4 flowmeter piping connectinns
- 17 -
TOSHIBA
6F8A07 7.0
Table 4.1 Bolt length and Nut tightening torque
ANSI class 150
3”
4”
Clamping
lorque
[N-m]
10 to 13
33 to 41
20 O’o 25
67 10 S3
73(0 91 16 1 i.^S" 5.7” 70 to 88
Clamping
lorque
[NmJ
P.C.S
4
4 3/4”
8
S
16
Jiexagon head boll.s
P.C.S
Mc(cr size
15mm 1;2”
25irim 1" 4 1/2” 2.25”
40mm 1 L'2"
50mm r 4 5/K” 2.75” 26 to 32 8 5/8“ 2.8” 13 to 16
80mm T 4
lOOmm 4"
15Cmm 6" S 3/4” 3.25” 46 to 57 12 3/4“ 4.1“ 30 to 38
20f)mm 8" 8 3/4” 3.5" 6010 75 12 4.7“
25Umm 10’' 12 7/S” 3.^"
500mm 12” 12 7/8”
350mm 14” 12 1” 4.5' 105(0 131 20 1 1.'8“ 5.9” 71 to 89
400mm Ifi” 16 1” 4.5" 98 10 123 20 1 i/4”
Meier
size
P.C.S
Machine Bolts
Diame
P.CS
4
4
8
Hotagon head bolts
ter
1/2” 2” 5 to 7 4 1/2“ 2” 5 hi 7
1/2” 2.5’ 15 to 18
5/8”
5/8” .3”
DIN.'BS 1(1
Diurne-
ler
I,cngih
finml
Length
linch]
ANSI class 300
Machine Bolts
Diame
ter
5.''8” 2.5’' 13 lo 16
3/4“ 3.4”
3/4” 3.7” 24 to 30
1”
Diame
ter
Length
finchl
2,8" 22 to 28
5.4” 57 to 71
6 3”
I31N/BS 16
Lengih
Imml
c:iamping
20tn25
47 to
9810 123
Clamping
torque
[NmJ
ttjrquc
f^‘m|
15mm 4 M12 55 5 to 7 4 M12 .55 5 10 7
25mm 4 M12 60 12 to J8 4 M12
40mm
SOmrri 4 M16 65 26 to 33 4 M16
80mm 8 M16 70 17 to 21 8 M16
100mm 8 M16 75 20 lo25 8 M16 7.5 20 to 25
150mm 8 M20 80 48 to 60 8 M20
200mm 8 M20 85
250mm 12 M20 90 60 to 75 12 M24
300mm 12 M20
35 Omm 16
4{)0inm 16 M24 105 93 to 116 16 M27 115
4 M16
M20
65
95 62 to 78
19 to 23
63 to 79 12 M20 90 42 to 53
65 to 82
4
M16 65 19 to 23
12
16 M24
M24
60 12 to 18
65
70 17 to 21
80 48 to 60
95 72 to 90
lOO 78 to 98
lit) 74 to 93
26 to 33
105 to !31
- 1 8 -
TOSHIBA
6F8A0770
Table 4«1 Bolt length and Nut tightening torque(contjnued)
JIS lOK
M«ler
iSmtn 4 M12 50
Zinmi 4 M16 55 13 to 16
40mm
50mm
K{)inm K M16 65 17 to 21 8
lOOmm S M16 70 20 to 25 8 M20 SO 25 to 32
150mm K M20
2№mm 12 M20 SO
250mm 12 M22 S5
300mm 16
350mm 16
4(J0mm 16 M24 95
[Icxaeon head ht>Us
P.C.S
Diamc-
icr
A
4 M)6 60 26 to 33 8 VI !6 65 13 to 16
M16
M22 85 54 to 67 16
M22 68 to 85 16 M30 125 93 to 116
length
fmml
60 19 to 23
SO 4S to 60 12 M22 9i) 35 to 44
Clamping
torque
[N^m]
5 to 7
42 to 53
66 to H2
93 to ] 16
Hcxagoit head bolts
Djantc-
P.C.S
4
4 M16 60 13 to 16
4
12 M22 95 46 to 58
12
16 M30 140 116 to 145
JiS 20K
Clamping
Length
tcr
M12 55 5 to 7
M16 65
M2U 75 21 to 26
M24 110 72 lo<X)
M24
[mini
110
torque
[NiuJ
] 9 to 23
59 to 74
-
19
-
TOSHIBA
4.3 Piping Connections (t) Required Pipe Length
6F8A0770
[f various; joints are used upstream of Itie deiecior outlet^ llie straight pipe length
shown in TiibJe 4,2 is required.
I'able 4.2 Required straight pipe length on the upslreinn side
L: Required straight pipe length—straight pipe leiiglh pius half length of the detector.
D: Nominal hore size (diameter)
NOTES
1. The length of a reducer, if connected, can he counted as a part of the straight pipe
length.
2.
No straight pipe length is needed on the downstream side, If a butterfly valve is
installed dowiLStream of the detector, do not let the valve plate protrude into the
pipe of the detector
- 20 -
TOSHIBA
(2) Pipe Orientatir>n
6F8A0770
The delector may
Figure However, except forhorizonlal iiislallatiuii, Quid should flow from lower lo
upper directions- See Figure 4.3.
be
installed in hori/ontal, vertical or sloping pipe runs as shown in
Figure 4.3 Detector Piping Orientation
I hc cJccirodcs should be posilioned horizonlaJly against the ground surface in any piping
installation. See Figure 4.4.
Cmss-scction A - A
Ground surface
Figure 4.4 [nstallatioti position of the detector
- 21 -
TOSHIBA
(3) Flow Direction
6F8A0770
Inculi the detector in accord<i!tcowilli (he flow directi on arre won the detector. See Figure 4.ò.
] 11 he act u iit l fi ow mn s opposi te to t h e specif i eci flow d i ree lio it, t ho follo win g d ì spi ay i\lìd
output appears., (For bidirectional multhrange moasurorrient, see 10,3/‘Mulii-rarige
Functions,’*).
' LCD display (optional)i Instantaneous flow rate—indicates negativo values,
Totalized flow—no counts added.
■ Output:Current output— 4.0 mA output; Pulse output^—^No pulses
I'or bidirectional range measurement, the flow in opposite direction results in a positive
output value. Sec 10.3, ‘"Multi-range Functions.*’
Flow direction arrow
Figure 45 Flow direction arrow on the detector
(4) Preventing an Empty Pipe Condition
Design an upright pipe run (Figure 4.6) or sufficicni head pressure (Fig. 4,7) at the
downstream detector outlet if there is a possibiiity of the detector pipe becoming emptied*
Upright pipe run
Figure 4.6 Detector with an upright pipe run at downstream outlet
Detector
CH
Figure 4.7 Detector with suftldecit head pressure at downstream outlet
~ 22 -
TOSHIBA
(5) Supporting Pipe
6.F8A0.770
Fix the relevant pipes Installed on both sides; of the detector by attach fittings, etc. to support
the pipe,
to the pipes by the dectmmagnctic flow'metcr’s weight and the fluid ma5;s. And it protect
from fluid leakage at flange face (sec Figures 4.8 and 4.9),
By
supporting the pipes, not only the pipe vibration is reduced but also the damage
Pipe support fittings
/////^//////////////////////////
Pipe support fittings
Figure Example of Hpe Fixing Procedure
K'5-5!
t
-flii
7777////7/777777777777777777777777777777777777777777777777777777~
Figure 4,9 Moclel Diagram of Unsuppuried Pipes
- 23 -
TOSHIBA
6F8A.07 7 0
(6)Gruunding
The grounding [ermin^l of ihc Ll'434/Lh4t)4 flowmeter ithould be grounded with 100 ohm
or less ground resistance. Use a heavy copper braid or wire (cross-sectional area mm"
minimum) to ground the terminal anJ make it as shon as possible. The terminal is M4 size
and an M4‘sizc crimped ring lug should be used to connect the wire to the terminal. Avoid a
common ground where earth current may flow, An independent ground is preferable. Sec
Figure 4,li), for a conductive pipeline grounding and non-cjondactive pipeline grounding
procedures.
To prevent a two-poinl grounding, ground the shielded cable on the receiving instrument
side.
I If connection pipe is conductive:
Connect between the grounding terminal
and both ends of the mating flanges with
a heavy copper braid or wire
(cross-section 5,5 mm" minimum).
If connection pipe is non-conductive;
L’se H heavy copper braid or w ire
(cross-scction 5.5 minimum) to
ground he terminal w'jth 100 ohm or
less ground resistance.
- 24 -
TOSHIBA
5. Wiring
A WARNING
DO NOT DiSCONNfXT WHILE CIRCUIT IS LIVE UNLESS
LOCATION IS KNOWN TO BE NONHAZARDOUS*
Live pari of eleciric circuit or a high tempeniiure deparimciit can
0
DONT
Do not live circuits While assembly of all componems not over.
cause explosion.
6F8A0770
0
DON’T
I
Jnstail per the National Electrical Code for Che US (NEC, ANSI/NFPA 70)
and the Canadian Electrical code for Canada (CEC, CAN/C5A-C22,1)<
O
DO
Protective performance degradalioii fur haiiarduus lucalion can
cause explosion.
Unsuiiable conduit connections for hazardous location can cause
explosion.
A CAUTION
■ Do not work OR piping and >viring
with wet hands.
Wet hands can cause system
0
DON’T
■ Do not modify or disassemble the
LF434/LK4fl4 unnecessarily»
t this product can cause elec-
DON’T damage TO ihis product»
■ Use the proper cables for wiring of
power and I/O <
/ J \ tern failure or damage and
failure.
Modifying or disassembling
trie shock, malfunction of or
Using a cable other lhan the
one specified may cause sys-
mav break, waterproof.
■ Ground the LF434/LF404 properly.
Operating this product wilhoul
o
DO
■ Prepare yourself for the cable glands
which could l>e used in Division 2
hazardous locations»
DO
A
a grounding can cause system
malfunction.
Tite apparatus should not be
provided with the cable glands.
The label shown left is placed
near the terminal board for
power input.
Be alert to electric shock.
- 25 -
TOSHIBA
6F8A0770
Howmeter accuracy mfiy be affected by the way wiring isS executed. Proceed witii w-iring
taking the following precautions:
(1) Select the cable runs away from electrical equipment (motors, transformers, or
radio transmitters) which causes eleciromagnciic or dcctrosiatic interference.
(2) Deterioration of llow^meter drcuil insulation occurs if the converter interior or
cable ends get wet or Ituniidilied. This in turn causes malfunction of flowmeter
or noise problems. Avoid a rainy day if the flow meter is to be installed outdoors.
Even indoors^ prevent water from splashing over ihc flowmeter. Try to finish the
wiring as quickly as possible
(3) The converter has a surge-absoit>ing barrier installed inside. Therefore, do not
conduct a withstand voltage test for the converter. J o check the insulation of the
converter, use a voltage of 250 V dc or less.
- 28 -
TOSHIBA
5Л Cables
Use the kind of ciibles shown in Tahle lo wire the converler.
Table 5.1 Cables
Name Cable type
Power cable
1/0 cable I'he number of wires for the output cable depends on Ihc
Notei Use a four-wire cable if the arresters are to be used. See Figure 5.1 below,
5.2 External Device Connections and Grounding
The terminal board connections of the LF434/LF404 flowmeter arc shown in Figure 5.1.
Proceed with wiring as described in Section 5.4, '‘Wiring Procedure.”
Three-wire sheathed
cable (Note)
system spccificiirions. Use a shielded cable with nominal
cross-scctional area of 1.25 inrii^ and overall diameter of
n to 13 mm.
Nominal
cross-.sectional
area
2
mm^
6.F.8A07 7 0
Overall diameter
11 to 13 mm
If power supply is specified as DC, use M as positive (+) and 1.2 as negative (-) terminals.
Instrument Panel:
ordered separately
■; Cument output (4—20 mA dc)
Plown-fceler
[C1 |~1^Трс|51с|[сОы[ ni|oQ^noi| -
’ ■ \
IV wire
5.5тзп"
or more
*^1 To use the arresters, ground the ON 13 terminal using the wire shown in broken line.
*2 Locate an external double-pole power switch on the power line near the flowmeter and within easy
operation. Mark one the switch as the tlisconnecting device for the flow^meler.
Use an appropriate switch of the rating shown below:
1/0 cable
R>wer cable
Recommended sw'itch rating; Rating 25D V ac, 6A or more
Inrush current 15 Лог more
- Digital Output I
; ■; r>igilai 2
: Digjiit! Input (20 to 30 V de)
*1
Cixrourided with 1 (X)Q or less
..........
! ground resistance.
— > Power Supply
It “"2 ^
Power Switch
Figci re 5.1 Term in a t В lock Connection s
- 27 -
TOSHIBA
6F8A0770
IMPORTANT
(1) The grounding terminal of the LF434/Lr404 ilowmeter should be grounded with
100 ohm or less ground resistance. Use a heavy copper braid or wire
(cross-sectional area .S..'? inm' minimLim) to ground the icrminaJ and make it as
short as possible, ITie terminal is M4 size and an M4-size crimped ring lug should
be used to connect the wire to the lermina!. Avoid a comirion ground where earth
current may flow'. An independent ground is preferable. See Figure 5,2. fora
conductive pipeline grounding and non-conductive pipeline grounding procedures.
(2) To prevent a tw'o-point grounding, ground the shielded cable on the receiving
instrument side.
I If conneetton pipe is conductive:
Conned between the grounding terminal
and both ends of the mating flanges with
a heavy copper braid or wire
{cross-section 5,5 mm" minimum).
If connection pipe is non-conductive:
Use u heavy copper braid or wdre
(cross-section 5.5 mm^ minimum) to
ground he terminal with 100 ohm or
Jess ground resistance.
- 28 -
TOSHIBA
53 Digital I/O ConnecUons
Pigiial li O terminals consist of conti.ct output terminals (standard DOl and optional
D02), voltage signal input terminal (1)1, optional), and signal common terminal (COM),
Each terminal (DOl, D02 and Dl) is isolated from internal circuits, Terminal (COM) is
the signal common for the other three terminals (PC I, D02 and DI).
Functions can he assigned for each terminal with the LCD control keys (option). See
Chapter 10, “Digital t/0 Functions.’"
To ciinnect an electromagnetic relay or counter to the contact output terminal (DOl Or D02),
put a surge^absorbing diode into the input circuit of the relay or counter. See Figure 5,3 for
an example of electromagnetic counter connection.
6F8A0770
Solidbtate rchiy
Note 1; Use a surge-absorbing diode of the rating: current rating lA and voltage rating
200 V minimum.
Note 2; The Solidstaic relay, photo-coupler and resistor are not provided fiir the standard
model (the one with no digital I/O specifications), Leave the terminals for D02 and
Di open.
Figure 53 Electromagnetic Counter Connoction Example
- 2 9 -
Loading...