Toshiba TIC-LF494B User Manual

y
Field Intelligent Device Series
Sanitary Electromagnetic Flowmeter
LF494/LF610 LF494/LF612
1S to 4S (25 to 100 mm)
Introduction
Sanitary electromagnetic flowmeters LF490 series are designed for applications handling food and beverages. Sanitary flowmeters must be structured in such a way that operation and handling is simple, easy and thorough for the purpose of sanitary control such as cleaning (CIP/SIP), sterilization and drying. The sanitary flowmeter has features provided with normal electromagnetic flowmeters and by using sanitary fittings for pipeline connections fluid does not remain in any place along the detector pipeline. Therefore, it is fit for flowrate measurement for food and beverages. The electromagnetic flowmeter uses Faraday’s Law of electromagnetic induction to measure the process flow. The device consists of two units: a detector, through which the fluid to be measured flows and in which low-level signals proportional to flow rates are obtained; and a converter, which supplies excitation current to the detector, and amplifies the signals from the detector and then processes and converts the signals into the 4–20mAdc current signal or communication signal. With the unique patented Mount-Anywhere magnetic field distribution technology, the meter is highly immune to upstream flow disturbances. Combined with a multi-functional converter LF610 (combined type) or LF612 (separate type) equipped with its patented Noise-Sentry original noise-suppression circuit and advanced algorithms. The LF490 has a very high tolerance to noise, giving the unit a very stable output even for slurry fluid measurement. IR (Infrared) switches enable parameter setting of the converter without removing the cover. Flow direction can be set in either way, and its unique 128 x 128 dot matrix LCD display allows the LCD to be rotated electronically to 90, 180 and 270 degrees without opening the cover.
Power suppl
Detector
I/O
Combined type
LF490/LF610 LF494/LF610F
Converter
Figure1. Configuration
Converter
Signal cable
Terminal box
Separate type
LF490/LF612 LF494/LF612F
Power supply
I/O
Excitation cable
Detector
LF490/LF610 LF494/LF610F
LF490 LF494
LF612 LF612F
Figure2. LF490 series flowmeters
The AF900 hand-held terminal (HART*
Certification
number
Z01207
1
communicator) can be used to communicate with the flowmeter from a remote place. PROFIBUS-PA*2 interface is available as an option.
*1: HART protocol (Highway Addressable Remote
Transducer) is a communication protocol for industrial sensors recommended by the HCF Communication Foundation).
*2: PROFIBUS is the communication protocol for factory
and process automation that the PROFIBUS Organization recommends. Instead of analog control with a conventional analog signal (4-20mA), it is the fieldbus which digitizes all signals. Flowmeters support PROFIBUS-PA.
(HART
TIC-LF494B
TIC-LF494B
Specifications
Overall Specifications
Measurement range in terms of flow velocity:
–1.0 ft/s to 0 32.8 ft/s (0 0.3 m/s to 0 –10 m/s)
0
0.3 ft/s to 0 1.0 ft/s (0 0.1 m/s to 0 0.3 m/s)
0 range is available optionally.
Accuracy:
* This pulse output error result is established under standard
operating conditions at Toshiba's flow calibration facility, Fuchu Japan. (NIST Traceable).
* Individual meter measurement error may vary up to ±0.5% of
Rate at 1.64 ft/s (0.5m/s) or more and ±0.3% of rate ±0.039
inch/s (1mm/s) at 1.64ft/s (0.5 m/s) or less. * Current output: plus ± 8µA (0.05% of span.) *Refer to individual calibration data for each individual meter's
measurement error.
Fluid conductivity: 5µS/cm minimum
Fluid temperature:
14 to 248 °F (–10 to +120 °C)
Ambient temperature: – 4 to 140 °F (–20 to +60 °C)
Structure: IP 67 and NEMA 4X Watertight
Power consumption:
17 W(27VA) or less 19 W(29VA) or less (with PROFIBUS)
Conformance to European Community Directives:
EMC directive 89/336/EEC The low voltage 93/68/EEC
3A standard (LF490 and LF494 detectors):
Approved for 3A standard with FDA approved Teflon PFA lining.
Approved hazardous location certifications:
Model: LF494/LF610F and LF494/LF612F
cFMus explosion proof:
FM Class I, Division 2, Groups A,B,C, and D. FM Class II, Division 2, Groups E, F and G. FM Class III.
Detector and converter combination:
LF490/LF610 : Combined type for standard
LF490/LF612 : Separate type for standard
LF494/LF610F: Combined type with Ex approval
LF494/LF612F: Separate type with Ex approval
±0.2 % of Rate*
specification.
specification.
of Class I, Division 2 (cFMus).
of Class I, Division 2 (cFMus).
Note : The test results were obtained and demonstrated at
TOSHIBA's flow calibration facility, Fuchu Japan.
Model LF490 and LF494 Detectors
Fluid pressure:
–15 to 300 psi, or –1.0 to 20 bar (–0.1 to 2.0 MPa)
Note: This pressure is the allowable pressure for the
detector. The actual pressure will be restricted by the type of connection method. For example, in the case of sanitary clamp type, the maximum pressure is 150 psi or 10 bar(1.0 MPa).
Note: The test pressure before shipping from the
factory is equal to twice the nominal pressure rating of the customer specified flange connection during 15 minutes.
Connection method:
Sanitary clamp type (ISO 2852)
Note: Tri-clamp® can connect except meter size 4" (100 mm).
Tri-clamp® is a registered trademark for Tri-Clover Inc.
Principal materials:
Case — stainless steel Linings — Teflon PFA (FDA approved)
Note: Teflon liners are mechanically retained for
full vacuum service.
Electrodes — 316L stainless steel (std.)
Note: Electrodes are electro-chemically polished
after mechanically buffed.
Sanitary fittings — 304 stainless steel (std.) Seal gaskets — Silicon rubber (FDA approved)
Note: See Table 5 for optional materials and other
related information.
Measuring tube material — 304 stainless steel
Coating: no coating (std.)
Dimensions and weights: See Figures 3 to 6.
Cable connection port: for separate type detectors.
Cable glands
LF490: Provided as standard, R(PT) 1/2
male screws.
LF494: Not provided, 3/4–14NPT male
screws are required.
Applicable diameter —
0.433 to 0.512 inch (11 to 13mm)
Mount-Anywhere Technology:
Thanks to TOSHIBA’s unique patented magnetic field distribution technology, the meter is highly immune to upstream flow disturbances.
A minimum of 1D (diameter) length of upstream straight pipe from the flange is required to maintain the performance specification.
2
Model LF610 and LF612 converters
Input signals
Analog signal — the voltage signal from detector,
proportional to process flow rate (for LF612 separate type converter).
Digital input DI (opt.)
Signal type: 20 to 30Vdc voltage signal Input resistance: 2.7k
Converter failure alarm output
Note 1: Two outputs (DO1 and DO2) are needed
for 4-range switching and forward/reverse 2-range switching.
Note 2: Normal Open (default set) or Normal
Close is selected for alarm outputs when programming.
When power failure occurs, unit will be fault to Normal Open.
Number of inputs: one point
DI function — One of the following functions
can be assigned to the optional DI signal.
Range switching — Selects either the higher or
lower range in the unidirectional or bidirectional 2-range setting.
Totalizer control — Starts and stops the built-in
totalizer.
Fixed-value outputs —Outputs fixed-values for
current and pulse outputs.
Zero adjustment — Executes zero adjustment
(on-stream at zero flow rate).
Output signals
Current output:
4–20mAdc (load resistance 0 to 750Ω)
Note: The current output cannot be used with
the PROFIBUS-PA ccommunication.
Digital outputs — One point (std.) and one more
point is optionally available as follows.
Digital output DO1 (std.):
Output type: Transistor open collector Number of outputs: One point Output capacity: 30Vdc, 200mA maximum
Digital output DO2 (opt.):
Output type: Solidstate relay output (non polarity) Number of outputs: One point Output capacity: 150Vdc, 150mA maximum or 150Vac (peak to peak), 100mA maximum
DO1 and DO2 functions — One of the following
functions can be assigned to DO1 (std.) and/or DO2 (opt.)
Pulse output (available only for DO1,DO2) Pulse rate: 3.6 to 36,000,000 pulses/hr (DO1)
3.6 to 360,000 pulses/hr (DO2)
(Over 3,600,000 pulses/hr, auto-setting) Pulse width: 0.5 to 500ms (but less than half of the period for 100% flow rate)
Note: The same and simultaneous pulse is not
available between DO1 and DO2.)
Multi-range selection outputs (Note 1)
High, High high, Low, and/or Low low alarm
outputs (Note 2)
Empty pipe alarm output
Digital Output Active Status (DO1 and DO2)
(Note 2)
Preset count output
Communications output:
• HART (std.) — Digital signal is superimposed
on 4–20mAdc current signal as follows:
Conforms to HART protocol
Load resistance: 240 to 750 Load capacitance: 0.25µF maximum Load inductance: 4mH maximum
PROFIBUS (opt.) Protocol : PROFIBUS-PA Baud rate : 31.25kbps Bus voltage : 9-30VDC
Consumption electric current of bus:less than 16mA
Manufacture Ident-No. : 093B Standard Ident-No. : 9740 Slave address : 0-126 (Default address is 126) Profile : Profile Ver.3.01 for Process Control
Devices
Function blocks : AI(Flow)×1 , Totalizer×1
LCD display: Full dot-matrix 128×128 dot LCD
display (back-light provided) The data on the LCD inside the converter can rotate to 90, 180, and 270 degrees by a software, without rotating the indicator itself. (Combined type only)
Parameter settings — Parameters can be set as
follows:
• IR Switches: Three key switches are provided to
set configuration parameters.
• Digital communication: The AF900 hand-held terminal or PROFIBUS is needed to set parameters.
•Zero adjustment: Zero point adjustment can be started by pressing the switch in the converter.
•Damping: 0.5 to 60 seconds (selectable in one second increments)
“Field re-verification”
Zero span calibration tool allows unit to be re-calibrated and verified using an internal software program. (For more information contact Toshiba International Corp.)
Conditions when power fails:
Parameter setting values are stored in non-volatile memory and the values will be restored when the power returns to normal condition. The outputs and display will remain as follows when power fails.
• Current output: 0mAdc
TIC-LF494B
HEX
HEX
Mag-Prover – Toshiba’s
3
TIC-LF494B
• Digital output: OFF
• LCD display: No display
• PROFIBUS: No communication
Power supply:
One of the following can be selected:
• 100 to 240Vac, 50/60Hz (std.) (allowable voltage 80 to 264Vac)
• 24Vdc (allowable voltage 18 to 36Vdc)
• 110Vdc (allowable voltage 90 to 130Vdc)
Surge protection:
Arresters are installed in the power supply, and a current signal output circuit to help protect the meter from lightning and improve personnel safety.
Case: Aluminum alloy (equal to IP 67) Coating: Acrylic resin-baked coating, pearl-gray
colored
Cable connection ports:
Cable glands
LF610 and LF612 without cFMus Approval:
Provided as standard, OD of cableφ
11~13mm Material Nylon 66 G (PF) 1/2 male screws.
LF610F and LF612F with cFMus Approval:
Not provided, 1/2–14NPT male screws are required.
Applicable diameter
0.433 to 0.512 inch (11 to 13mm)
Note: When PROFIBUS option is specified, cable gland size
is φ6~8mm for signal cable, φ11~13mm for power cable
Vibration resistance:
No resonance to the following levels of
vibration:
• 10 to 150Hz with acceleration of 9.8m/s
2
• Vibration of 30Hz with 29.4 m/s2 in 4h in each direction will not cause any defect to unit.
Note: Avoid using the flowmeter in an environment with
constant vibration.
Dimensions and Weights:
See Figure 8 (for Separate type)
MTBF:
Converter: 220,000 hours (25 years) at 77 °F
(25 °C) based on strict military specification MIL-HDBK-217F
Detector: 350,000 hours (40 years) at 77 °F
(25 °C) based on strict military specification MIL-HDBK-217F
4
)
)
Installation
Dimensions (Combined type)
Clamp connection Unit : inch(mm)
Note1: Clamp (Joint) size is different from meter size of
Note2: Cable glands are not provided for cFMus
For English unit
Meter size
(inch)
1 (1S) 2 S 4.33 9.17 2.87 Approx. 11
1-1/2 (1-1/2S)
2 (2S) 3 S 5.51 9.64 4.09 Approx. 15.4 3 (3S) 4 S 5.51 10.00 5.12 Approx. 19.8 4 (4S) 5 1/2 S 6.30 10.19 6.38 Approx. 26.5
For SI unit
Meter size mm (inch)
25 (1S) 2 S 110 233 73 Approx. 5
40 (1 1/2S) 2 1/2 S 125 286 90 Approx. 6
50 (2S) 3 S 140 245 104 Approx. 7 80 (3S) 4 S 140 254 130 Approx. 9
100 (4S) 5 1/2 S 160 259 162 Approx. 12
Note: Tri-clamp® is available to use the same joint size
Note: 1 inch = 25.4 mm
Figure 3. LF490/LF610 and LF494/LF610F
8.86(225)
5.16(131
(L 2)
ØD1
5.63(143)1.42(36
L1
LF490 and LF494. See the following table.
approved type.
Joint size
(ISO2852)
2 1/2 S 4.92 11.25 3.54 Approx. 13.2
Joint size
(ISO2852)
(inch)
L1
L1
(mm)
L2
(inch)
L2
(mm)
D1
(inch)
D1
(mm)
Weight
(lbs)
Weight
(kg)
instead of ISO2852 clamp except meter size 100 mm (4").
Flowmeters
(Ferrules and Clamps not attached)
TIC-LF494B
Welding connection
8.86(225)
1.42(36)
Unit : inch(mm)
5.63(143)
Note1: L1 dimension is for the standard (Normal length)
type ferrule.
Note2: See Figure 7 for Ferrule dimensions.
Note3: Cable glands are not provided for cFMus approved
type.
For English unit
Meter size
(inch)
1 (1S)
1-1/2 (1-1/2S)
2 (2S) 3 (3S) 4 (4S)
Joint size
(ISO2852)
2 S
2 1/2 S
3 S 4 S
5 1/2 S
L1
(inch)
6.16 1.00 3.11
6.75 1.50 3.66
7.34 2.00 4.17
7.85 3.00 5.28
8.64 4.00 6.81
D1
(inch)
(inch)
D2
Weight
(lbs)
Approx. 13.2 Approx. 17.6 Approx. 19.8 Approx. 26.5 Approx. 35.3
For SI unit
Meter size mm (inch)
25 (1S) 2 S 156.4 25.4 79 Approx. 6
40(1 1/2S) 2 1/2 S 171.4 38.1 93 Approx. 8
50 (2S) 3 S 186.4 50.8 106 Approx. 9 80 (3S) 4 S 199.4 76.3 134 Approx. 12
100 (4S) 5 1/2 S 219.4 101.6 173 Approx. 16
Note: Tri-clamp® is available to use the same joint size
Note: 1 inch = 25.4 mm
Joint size
(ISO2852)
instead of ISO2852 clamp except meter size 100 mm (4").
L1
(mm)
D1
(mm)
D2
(mm)
Weight
(kg)
Figure 4. LF490/LF610 and LF494/LF610F
Flowmeters
(Ferrules and Clamps attached)
5
TIC-LF494B
3.46(88
)
)
(
単位
)
)
)
)
Dimensions (Separate type)
Clamp connection
1.57(40
(L2)
1.38(36
R(PT)1/2
Male screw
ΦD1
Unit : inch(mm)
4.96(126
3.58(91
Welding connection
3.46(88)
1.57(40)
R(PT)1/2 Male screw
2
D
φ
1.38(36)
φD1
Unit : inch(mm)
4.96(126)
3.58(91)
L1
:mm
Note1: Clamp (Joint) size is different from meter size
of LF490. See the following table.
Note2: Cable glands are not provided for cFMus
approved type.
For English unit
Meter size
(inch)
1 (1S) 2 S 4.33 7.05 2.87 approx. 8.8
1-1/2 (1-1/2S)
2 (2S) 3 S 5.51 8.27 4.09 approx. 13.2 3 (3S) 4 S 5.51 9.29 5.12 approx. 17.6 4 (4S) 5 1/2 S 6.30 10.55 6.38 approx. 24.3
Joint size
(ISO2852)
2 1/2 S 4.92 7.72 3.54 approx. 11.0
(inch)
L1
L2
(inch)
D1
(inch)
Weight
(lbs)
For SI unit
Meter size
(mm)
25 (1S) 2 S 110 179 73 approx. 4
40 (1 1/2S) 2 1/2 S 125 196 90 approx. 5
50 (2S) 3 S 140 210 104 approx. 6 80 (3S) 4 S 140 236 130 approx. 8
100 (4S) 5 1/2 S 160 268 162 approx. 11
Note: Tri-clamp® is available to use the same joint size
Note: 1 inch = 25.4 mm
Joint size
(ISO2852)
L1
(mm)
L2
(mm)
D1
(mm)
Weight
(kg)
instead of ISO2852 clamp except meter size 4" (100 mm).
Figure 5. LF490/LF612 and LF494/LF612F
Flowmeters
(Ferrules and Clamps not attached)
L1
Note1: L1 dimension is for the standard (Normal
length) type ferrule
Note2:
See Figure 7 for Ferrule dimensions.
.
Note3:Cable glands are not provided for cFMus
approved type.
For English unit
Meter size
(inch)
1 (1S)
1-1/2 (1-1/2S)
2 (2S) 3 (3S) 4 (4S)
Joint size
(ISO2852)
2 S
2 1/2 S
3 S 4 S
5 1/2 S
L1
(inch)
6.16 1.00 3.11
6.75 1.50 3.66
7.34 2.00 4.17
7.85 3.00 5.28
8.64 4.00 6.81
D1
(inch)
D2
(inch)
For SI unit
Meter size mm (inch)
25 (1S) 2 S 156.4 25.4 79 approx. 5
40(1 1/2S) 2 1/2 S 171.4 38.1 93 approx. 7
50 (2S) 3 S 186.4 50.8 106 approx. 8 80 (3S) 4 S 199.4 76.3 134 approx. 11.
100 (4S) 5 1/2 S 219.4 101.6 173 approx. 15
Note: Tri-clamp® is available to use the same joint size
instead of ISO2852 clamp except meter size 4" (100 mm).
Note: 1 inch = 25.4 mm
Joint size
(ISO2852)
L1
(mm)
D1
(mm)
D2
(mm)
Figure 6. LF490/LF612 and LF494/LF612F
Flowmeters
(Ferrules and Clamps attached)
Weight
(lbs)
approx. 11.0 approx. 15.4 approx. 17.6 approx. 24.3 approx. 33.1
Weight
(kg)
6
LF490, LF494 Detectors
Pipe (welding)
Normal type For English unit
Meter size
(inch)
1 (1S)
1-1/2
(1-1/2S)
2 (2S) 3 (3S) 4 (4S)
Joint size
(ISO2852)
2 S
2 1/2 S
3 S 4 S
5 1/2S
L1
L2
D1
D2
D3
(inch)
(inch)
(inch)
(inch)
(inch)
0.85 0.11 2.52 0.91 1.00
0.85 0.11 3.05 1.41 1.50
0.85 0.11 3.58 1.88 2.00
1.10 0.11 4.69 2.85 3.00
1.10 0.22 6.10 3.84 4.00
Weight
(lbs)
Approx.0.4
Approx. 0.4
Approx. 0.7
Approx. 1.1
Approx. 2.2
Normal type For SI unit
Meter size mm (inch)
25 (1S) 2 S 21.5 2.85 64.0 23.0 25.4 Approx. 0.2
(1 1/2S)
50 (2S) 3 S 21.5 2.85 91.0 47.8 50.8 Approx. 0.3 80 (3S) 4 S 28.0 2.85 119.0 72.3 76.3 Approx. 0.5
100 (4S) 5 1/2S 28.0 5.6 155.0 97.6 101.6 Approx. 1.0
40
Joint size
(ISO2852)
2 1/2 S 21.5 2.85 77.5 35.7 38.1
L1
(mm)
L2
(mm)
D1
(mm)
D2
(mm)
D3
(mm)
Weight
(kg)
Approx. 0.2
Long type For English unit
Meter size
(inch)
1 (1S)
1-1/2
(1-1/2S)
2 (2S) 3 (3S) 4 (4S)
Joint size
(ISO2852)
2 S
2 1/2 S
3 S 4 S
5 1/2S
L1
L2
D1
D2
(inch)
(inch)
(inch)
(inch) D3(inch)
3.00 0.11 2.52 0.91 1.00
3.00 0.11 3.05 1.41 1.50
3.00 0.11 3.58 1.88 2.00
4.00 0.11 4.69 2.85 3.00
4.00 0.22 6.10 3.84 4.00
Weight
(lbs)
Approx. 0.4
Approx. 0.7
Approx. 0.9
Approx. 1.8
Approx. 3.1
Long type For SI unit
Meter size mm (inch)
25 (1S) 2 S 76.2 2.85 64.0 23.0 25.4 Approx. 0.2
(1 1/2S)
50 (2S) 3 S 76.2 2.85 91.0 47.8 50.8 Approx. 0.4 80 (3S) 4 S 101.6 2.85 119.0 72.3 76.3 Approx. 0.8
100 (4S) 5 1/2S 101.6 5.6 155.0 97.6 101.6 Approx. 1.4
Note1: This special Ferrule, which fits on TOSHIBA LF490
Note2: "D1" is Toshiba's original dimension.
Note3: 1 inch = 25.4 mm
40
Joint size
(ISO2852)
2 1/2 S 76.2 2.85 77.5 35.7 38.1
L1
(mm)
L2
(mm)
D1
(mm)
D2
(mm)
D3
(mm)
and LF494, can be fastened to ISO2852 clamp. Tri-clamp® is available to use the same joint size instead of ISO2852 clamp except meter size 4" (100mm).
Weight
(kg)
Approx. 0.3
TIC-LF494B
Figure 7. Ferrule dimensions
7
TIC-LF494B
矢視
A
(
)
(
)
7.87(
00 )
)
)
y
t
y
4-φ11
5.94(151)
151
2. 91( 74)
74 ±0.3
4 – φ0.43(φ11 )
Attachment
取付金具
LCD display
LCD 表示器
15 1
151
5.94
IR Switch
赤外線
Cable ground
ーブルグ
178
178
7.01
25
3 .23( 82)
82
0.98(25
2
200
6 .14( 156 ) 1.42(36)
(36) 156
Figure 8. Separate type converter LF612 and LF612F
External Connections
Combined type LF490/LF610 and LF494/LF610F flowmeters
Ground terminal
Intermediate voltage (IV) wire,
2
or more.
5.5mm
To be grounded with 100 or less ground resistance.
I/O Cable (CVV-S)
0.51(13
13
Excitation cable ground
励磁ケーブルグラ
Sig na l ca b le grou nd
信号ケーブ グラ
Unit : inch(mm)
I/O cable ground
電流出力ケーブルグランド
Gr ound te rm in al
接地端子
(M4)
(M4)
取付金具
Po wer s upp ly cab le g round
Blind screw
矢視 A
Instrument Panel : Ordered separatel
電源ケールグラ
封止栓
Current output (4~20mAdc) or PROFIBUS
Digital Output 1 Signal common
for DI and DO
Digital Output 2
Digital Inpu (20 to 30Vdc)
Grounded with 100 or less ground resistance
Grounded with 100 or less ground resistance
Power suppl
Power Cable (CVV)
1
*
Power Switch (External double-pole power switch)
*1 Locate an external double-pole power switch on the power line near the flowmeter within easy reach of operation.
Use the appropriate switch rating as shown below:
Switch rating: 250Vac, 6A or more
In rush current: 15A or more
Figure 9. Combined type LF490/LF610 and LF494/LF610F
flowmeters Wiring Diagram
8
Separate type LF490/LF612 and LF494/LF612F flowmeters
Terminal board
Thick walled steel conduit
IV wire
2
5.5 mm
or more
Grounded with 100 or less ground resistance
Power switch (External double-pole power switch )
[Instrument panel : ordered separately]
TIC-LF494B
Signal cable
(2-wire shielded hard-rubber
sheathed cable)
(3-wire shielded hard-rubber cable)
Connected detector
Excitation cable
Power cable
(CVV)
Digital input cable
(CVV-S)
Grounded with 100Ω or less ground resistance
Power supply
Current output (4~20mAdc) or PROFIBUS
Digital output 1 Signal common for DI and DO
Digital output 2
Digital input (20~30Vdc)
Grounded with 100Ω or less ground resistance
Figure 10. Separate type LF490/LF612 and LF494/LF612F flowmeters wiring Diagram
Table 1. LF610, LF610F, LF612 and LF612F Converters Signal Table
Symbol Description Cable
L1 (+) L2 (-)
GND Ground (for arrester)
FG Frame ground
DI Digital Input (20~30Vdc)
DO1 Digital Output 1 DO2 Digital Output 2
COM Signal Common for DI, DO1, DO2
Power supply Power cable (CVV)
I/O cable (CVV-S)
Current Output (4~20mAdc)
or PROFIBUS
Shielded cable for
PROFIBUS-PA
X Y Excitation Output
E
A
B Signal Input
G
Excitation cable
(for LF612, LF612F only)
Signal cable
(for LF612, LF612F only)
9
TIC-LF494B
µ
Wiring Precautions
(1) Explosion proof type flowmeters are not
provided cable glands. Refer to the part Cable connection port at detector and converter.
(2) Connect the grounding wire (IV wire 5.5mm² or
more) to a good earth ground (100
or less
ground resistance). Make the wire as short as possible. Do not use a common ground shared with other equipment where earth current may flow. An independent earth ground is recommended.
(3) The allowable cable lengths between the
detector and converter for the separate type flowmeter depend on the electrical conductivity of the object fluid. See Figure 11.
(4) DO1, DO2 (opt.), and DI (opt.) use the same
common terminal (COM). This COM can not connect to other equipments which have their own ground terminal. (Power supply for connecting to DI or DO, etc…) Need to wire separately.
Wiring Precautions (PROFIBUS)
(1) For wiring path, avoid places near electrical
equipment that may cause electromagnetic induction or electrostatic induction interference (such as a motor, transformer and wireless transmitter).
(2) Use a PROFIBUS-PA cable for signal cable. In
addition, make sure to use a shielded cable to improve noise resistance. Furthermore, installation of signal cable in metal conduit is recommended.
(3) General PROFIBUS-PA cables are designed for
indoor use where cables are not exposed to humidity, rain, etc. When you install cables, make sure to check the operating conditions such as the operating temperature range of the cable by contacting its manufacturer.
(4) When you carry out cable end treatment of
PROFIBUS-PA cable, use a dedicated cable stripper etc. so that the core wire of the cable will not be nicked or damaged. In addition, for cables, be careful of allowable maximum bend diameter etc. (Basically, do not install cables in a way cables are twisted or bent.).
(5) Consider installing a PROFIBUS-PA arrester in
the communication path of PROFBUS-PA so that the electromagnetic flowmeter will not be affected by lightning etc.
(6) The electromagnetic flowmeter is not equipped
with terminating resistors.Use the terminating resistor unit for PROFIBUS-PA
or junction box,
if necessary.
(7) Only one PROFIBUS-PA cable goes through a
cable gland of the Electromagnetic Flowmeter. Please use the junction box at system configuration
.
300 200
100
50 30
10
5
3
Allowable cable length (m)
3 5 10 20 30 50 100 200
Conductivity (
S/cm)
Figure 11. Electrical Conductivity and
Cable Length
Meter Size
To select the meter size:
See Table 2 to 3 and find meter sizes within the velocity of 0.3 to 32.8 ft/s (0.1 to 10m/s ) for a specified full-scale (measuring range high limit) flow. Select one that has its full-scale velocity between 3.0 and 10 ft/s (1 and 3m/s).
Note: Make sure the full-scale flow rate used for the final
planning stage stays within 32.8 ft/s (10m/s) in terms of flow velocity.
Table 2. Flow Rate and Flow Velocity (English unit)
Unit: gal/min
Size
(inch)
1
1 ½
2 3 4
0.3ft/s 0.98ft/s 3ft/s 10ft/s 32.8ft/s
0.7781
1.992
3.112
7.967
12.45
Flow rate
2.334 7.115
5.975 18.21
9.337 28.46
23.90 72.85
37.35 113.8
23.72
60.71
94.86
242.8
379.4
77.81
199.2
311.2
796.7 1,245
Table 3. Flow Rate and Flow Velocity (SI unit)
Unit: m
Size
(mm)
25 40 50 80
100
0. m/s 0.3 m/s 1.0 m/s 3 m/s 10 m/s
0.1767
0.4523
0.7067
1.809
2.827
Flow rate
0.5301 1.767
1.357 4.523
2.120 7.067
5.428 18.09
8.482 28.27
5.301
13.57
21.20
54.28
84.82
3
/h
17.67
45.23
70.67
180.9
282.7
10
Calibration Range
If the calibration range is not specified, the standard range as shown below will be used. If the range is specified, we will use the specified range for calibration.
Table 4. Standard Flow Range
Meter size inch(mm)
1 (25) 75 6 3.395
1 1/2 (40) 175 15 3.316
2 (50) 300 25 3.537 3 (80) 650 60 3.316
4 (100) 1,000 100 3.537
Note: The unit of "gal/min" is not exchanged
(converted) by "m
Flow rate
(gal/min)
Standard flow range
Flow rate
(m³/h)
3
/h".
Flow velocity
(m/s)
TIC-LF494B
About establishment environment
Do not store or install the flowmeter :
• Where there is direct sunlight.
• Where excessive vibration or mechanical shock occurs.
• Where high temperature or high humidity conditions exist.
• Where corrosive atmospheres exist.
• Places that can be submerged under water.
• Where there is a sloped floor. To put the flowmeter temporarily on the floor, place it carefully with something, such as a block, to support it so that the flowmeter will not topple over.
In areas like the following, there may be the case that infrared switches do not function correctly. (If these are unavoidable, use an appropriate cover.)
(1) Where unit (operation panel) is exposed to direct
sunlight, reflection of light onto window pane and diffused light reflection.
(2) Where smoke and steam may occur.
(3) Where exposed to direct snow, ice or mud.
Ordering Information
1. When ordering the LF490 series flowmeters, refer to Tables 5 and 6 (Type Specification Codes). An entry must be made for each of the columns in each of these tables.
2. Fluid characteristics: (1) Type of fluid to be measured and its characteristics (2) Fluid temperature (3) Fluid pressure (4) Electrical conductivity of the fluid
3. Measuring range
4. I/O function setting
5. Ordering scope: Flow calibration data: (required or not)
6. Other items Specifications other than standard items
Consult a Toshiba representative before ordering
when choosing materials of the wetted parts such as lining, electrodes, and grounding rings.
11
TIC-LF494B
Table 5. Specification Code (Sanitary type detector LF490 Series)
Model Specification Code Type
1 2 3 4 5 6 7 8 9 10 11 12 13 14 L F 4 9 0 Normal specification type L F 4 9 4 Hazardous location certification type (Note 1)
Meter size (Clamp size) E 1"(25mm) (2S) F 1 1/2"(40mm) (2 1/2S) G 2"(50mm) (3S) H 3"(80mm) (4S) J 4"(100mm) (5 1/2S)
Mounting Style L Detector/Converter combined type (LF490/LF610) M Detector/Converter separate type (LF490/LF612) cFMus class I, Division 2 (Note 1) A Detector/Converter combined type (LF494/LF610F) B Detector/Converter separate type (LF494/LF612F)
Connection method A Sanitary clamp type (ISO 2852) (Note 2) Z Other
Electrode Material (Note 5)
B 316L stainless steel Z Other
Lining and Sealing materials (gaskets) (Note 5) S Teflon PFA and Silicone rubber
Piping connection parts (ferrules, clamps) (Note 2, 3, 5) A No ferrule and no clamp B Normal type of Ferrules (304 stainless steel) with no clamp C Normal type of Ferrules (304 stainless steel) with clamp D Long type of Ferrules (304 stainless steel) with no clamp E Long type of Ferrules (304 stainless steel) with clamp Z Other
Flow and calibration velocity range A 1.0 to 32.8 ft/s (standard range calibration) B 1.0 to 32.8 ft/s (specified range calibration) C 0.3 to 32.8 ft/s (specified range calibration)
Excitation and Signal Cables A not provided B 30 m cable, provided (Note 4) C other lengths, provided (Note 4)
Coating (Note 6) A no coating
F
3A approved type Other
Z
Size code explanation: √ : Object : Standard : Option
Note1: Cable glands are not provided. Refer to the part of “Cable connection port” at detector and converter.
Note2: Tri-clamp® is available to use the same joint size instead of ISO2852 clamp except meter size 100mm (4").
Note3: Toshiba’s original ferrule is required to use for LF490 series detectors to keep just fitting between the joint in case
of choosing clamp type.
Note4: Applies to the separate type flowmeter only. Specifying the code C, indicate the length of cable from 1 to 300m in
1 meter increments.
Note5: Consult Toshiba before ordering when choose materials at the wetting parts.
Note6: LF494 have only 3A approved type.
Description
: Not available
Normal Ex. type
 
– –
12
Table 6. Specification Code for converters
Model Specification Code 1 2 3 4 5 6 7 8 9 10 11 12 13 14 L F 6 1 Electromagnetic flowmeter converter
0 Combined (Integral) type 2 Separate (Remote) type
E Instruction manual
A F
Shape A B
Converter mounting fitting A C E
1 2
Digital input/output
Current output and Communication function 1 2
Power supply
1 2 3
Purpose
Standard cFMus class I, Division 2 approved
Integral type with case Separate type with case
None Panel, Accessory for wall mounting (BNP material: SUS304) Accessory for pipe installation (BNP material: SUS304)
Digital output points 1 (DO1) Digital output points 2 (DO1+DO2) +Digital input point 1 (DI)
Current output + HART communication PROFIBUS communication (Current output is not usable)
100Vac-240Vac, 50/60Hz 24Vdc 110Vdc
English
Code explanation: : Standard : Option –: Not available
Table 7. Type Specification Code for Maintenance Parts
Meter size
inch(mm)
Joint size
(ISO2852)
Gasket
1S(25) 2S 3L8A0355P001 3A8A7164P001 3A8A7164P006 4A8A2957P002
1 1/2S(40) 2 1/2S 3L8A0355P002 3A8A7164P002 3A8A7164P007 4A8A2957P003
2S(50) 3S 3L8A0355P003 3A8A7164P003 3A8A7164P008 4A8A2957P004
3S(80) 4S 3L8A0355P004 3A8A7164P004 3A8A7164P009 4A8A2957P006
4S(100) 5 1/2S 3L8A0355P005 3A8A7164P005 3A8A7164P010 4A8A2957P008
Note1: A pair of parts are packed in each specification code. Note2: Tri-clamp® is available to use the same joint size instead of ISO2852 clamp except meter size 4"(100mm).
Specification code for maintenance parts
Normal type Long type
Contents
Ferrule
TIC-LF494B
LF600
type
 
– –
 
 
  
ISO2852 Clamp
LF602
type
 
  
 
 
  
13
TIC-LF494B
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14
TIC-LF494B
This Page Intentionally Blank
15
TIC-LF494B
ISO9001 and ISO14001 are certified.
Misuse of this product can result in damages to property or human injury. Read related manuals carefully before using this product.
TIC-LF494B
Specifications are subject to change without notice.
Printed in Japan 2008-5 (TDOC)
© TOSHIBA Corporation 2008
All Rights Reserved.
http://www.toshiba.com/ind/
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