TOSHIBA LF654-LF620F,Electromagnetic Flowmeter User Guide

TOSHIBA LF654-LF620F,Electromagnetic Flowmeter

Analog signal — the voltage signal from detector, Specifications

• Measurement range: 1.0 ft/s to 32.8 ft/s (0.3 m/s to 10 m/s)
• Fluid conductivity
• Fluid temperature
• Structure: Standard — IP 67 and NEMA 4X, Option — IP68 and NEMA 6P
• Power consumption: AC100-240 MAX12W(27VA), DC24 MAX16W
• Approved hazardous location certifications: Class I, II, III, Division 2, Groups A-G
• Drinking water approvals: NSF/ANSI standard 61
• Fluid pressure: -15 psi or -1.0 bar (-0.1 MPa) to the nominal pressure of the connection flange
• Connection flange standards: ASME B16.5 class 150, ASME B16.5 class 300, EN1092-1 PN10, EN1092-1 PN16
• Principal materials: Case — carbon steel, Flange material — carbon steel
• Lining: PFA (NSF certified), PU (NSF certified)

Product Usage Instructions

Installation

1. Ensure a minimum of 1D length of upstream straight pipe from the flange and 0D length of downstream straight pipe are maintained.
2. Connect the flowmeter to the pipeline properly.

Power Connection

1. Use AC100-240V or DC24V power supply within the specified power consumption limits.
2. Ensure proper wiring and connection to meet water-tight status.

Maintenance and Care

1. Avoid exposing the flowmeter to rain or water before connecting to the pipeline.
2. Follow manufacturer guidelines for maintenance and cleaning.

FAQ

1. Q: What is the measurement range of the flow velocity for this flowmeter?
   A: The measurement range is 1.0 ft/s to 32.8 ft/s (0.3 m/s to 10 m/s).

2. Q: What are the hazardous location certifications for this product?
   A: The product is cFMus Nonincendive certified for use in hazardous (classified) locations: Class I, II, III, Division 2, Groups A-G.

Introduction

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 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 4–20 mAdc current signal or communication signal*1&2. The meter features a Mount- Anywhere magnetic field distribution technology, the meter is highly immune to upstream flow disturbances. Combined with a multi-functional converter LF620 (combined type) or LF622 (separate type) equipped with its Noise-Sentry original noise-suppression circuit and advanced algorithms. The LF654 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.

1. HART protocol (Highway Addressable Remote Transducer) is a communication protocol for industrial sensors recommended by the HCF (HART Communication Foundation).
2. Modbus is the communication protocol. Physical layer is RS485.

Figure1. Configuration

Figure2. LF654 Mount-Anywhere Series Flowmeters

Cable gland openings have only dust caps which are not water tight. Water tight status is not met until properly wired and connected.

Specifications

Overall Specifications
Measurement range in terms of flow velocity:
1.0 ft/s to 32.8 ft/s (0.3 m/s to 10 m/s).
0.3 ft/s to 1.0 ft/s (0.1 m/s to 0.3 m/s) range is available optionally.

Accuracy:
< 1/2″ to 18″ ( 15mm to 450mm) >
±0.2 % of Rate*

• This pulse output error result is established under standard operating conditions at Toshiba admitted flow calibration facility. (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 1.64 ft/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:
3µS/cm minimum

Fluid temperature:

• 4 to 248 °F (-20 to +120 °C): PFA lining

• 4 to 104 °F (-20 to +40 °C): Polyurethane lining

• Consult Toshiba before using the meter at the high temperature, because the product lifetime may be shortened.

Ambient temperature:

• 40 to 140 °F (-40 to +60 °C):
  Separate type for PFA lined flowmeter

• 4 to 140 °F (-20 to +60 °C):
  Combined type for PFA lined flowmeter

• 4 to 140 °F (-20 to +60 °C):
  PU lined flowmeters

Structure:
Standard — IP 67 and NEMA 4X
Option — IP68 and NEMA 6P Submersible type allow for accidental submergence up to 15m for 48 hours. PFA and Polyurethane lined detector tubes are NEMA 6P/IP68 compliant when a TOSHIBA-approved Potting kit is properly Field or Factory installed.
NOTE: PFA lining detector shall become valid for the IP68/NEMA 6P function after being connected to the pipeline. It needs to avoid being put under the rain or water by itself before connecting.

Power consumption:
AC100-240:MAX12W(27VA)
DC24: MAX16W
With communication function

Approved hazardous location certifications:
Model: LF654/LF620F and LF654/LF622F

cFMus Nonincendive for use in hazardous (classified) locations:
Class I, II, III, Division 2, Groups A-G

Detector and converter combination:
LF654/LF620F: Combined type with Ex approval of Class I, II, III, Division 2 (cFMus).
LF654/LF622F: Separate type with Ex approval of Class I, II, III, Division 2 (cFMus).

Mount-Anywhere Technology:
With TOSHIBA’s unique magnetic field distribution technology, the meter is highly immune to upstream flow disturbances.
A minimum of 1D (one diameter) length of upstream straight pipe from the flange and 0D (zero diameter) length of downstream straight pipe from the flange are required to maintain the specification performance.
Note: The test results were obtained and demonstrated at TOSHIBA’s flow calibration facility, Fuchu Japan.

Drinking water approvals:
NSF/ANSI standard 61 (see Table 4)

Model LF654 Detector
Mounting style: Flange connection type

Fluid pressure:

• 15 psi or -1.0 bar (-0.1 MPa) to the nominal pressure of the connection flange (see Figure 2)

Figure 2 Nominal pressure and fluid temp
Connection flange standards:
ASME B16.5 class 150, ASME B16.5 class 300 EN1092-1 PN10, EN1092-1 PN16

Principal materials:

• Case — carbon steel
• Flange material — carbon steel
• Linings —

1/2” to 18” (15 to 450mm): PFA (NSF certified) 1/2” to 18” (15 to 450mm): PU (NSF certified : over 4”(100mm))
Note: PFA liners are mechanically retained for full vacuum service (2 1/2” to 18” (65mm to 450 mm)).

Electrodes —
Type-Super smooth, polished with self-cleaning finish, and non-stick shape
316L stainless steel (std. for PU lining) Hastelloy C equivalent (std. for PFA lining)
Note: Electrodes are mechanically buffed and electro-chemically polished.
Grounding rings — 316 stainless steel (std.)
Note: See Table 4 for optional materials and other related information.
Measuring tube material — 304 stainless steel
Terminal box material — Aluminum alloy (for  separate type)
Coating: Corrosion-resistant resin coating (std.) gray colored
Dimensions and weights: See Figure 3, 4, 5, and 6. Cable connection port: for separate type detectors.
Cable gland —
LF654(with cFMus):Not provided, 1/2–14NPT male screws are required.

Model LF620 and LF622 converters

Input signals

• Analog signal — the voltage signal from detector, proportional to process flow rate (for LF622 separate type converter).

Digital input DI

• Signal type: 20 to 30Vdc voltage signal
• Input resistance: 10kΩ
• Number of inputs: one point

Note: DI cannot be used with the Modbus communication.

• DI function — One of the following functions can be assigned to the DI signal.
• Range switching — Selects either the higher or lower range in the unidirectional or bidirectional 2- range setting.
• Totalizer control — ‘Starts/Stops’ or ‘Resets /Starts’operation in the built-in totalizer.
• Fixed-value outputs —Outputs fixed-values for current and pulse outputs for loop check.
• Zero adjustment — Executes zero adjustment (on-stream at zero flow rate).

Output signals
Current output:

• 4–20mAdc (load resistance 0 to 750Ω)
• Digital outputs — Two points are available as follows.

Digital output DO1:

• Output type: Transistor open collector Number of outputs: One point
• Output capacity: 30Vdc, 200mA maximum
• Note: DO1 cannot be used if Modbus communication connection is 3 lines. (Refer to table 6 for details)

Digital output DO2 :
Output type:
Solid-state relay output (non-polarity)
Number of outputs: One point
Output capacity: 150Vdc, 150mA maximum  or 150Vac (peak to peak), 100mA maximum
Note: DO2 cannot be used with the Modbus communication. (Refer to table 6 for details)

• DO1 and DO2 functions — One of the following functions can be assigned to DO1 and/or DO2 .

Pulse output (available only for DO1, DO2)

• Pulse rate: MAX 10kHz (10000pps)(DO1)
  MAX 100Hz (100pps)(DO2)
  (Over 1kpps, auto-setting)

• Pulse width: 0.3 to 500ms (but it is 40% or less of the full-scale cycle. )

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 (Note 2)
• Preset count output
• 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.

Communications output:

• HART (std.) — Digital signal is superimposed on 4–20mAdc current signal as follows:
  • Conforms to HART protocol
  • Load resistance: 240 to 750Ω
  • Load capacitance: 0.25µF maximum
  • Load inductance: 4mH maximum
• MODBUS (opt.)
  • Physical layer : RS485
  • Protocol : Modbus
  • Mode : RTU
  • Baudrate : 4800, 9600, 19200bps
  • Data length : 8bit
  • Parity bit : None, Odd, Even
  • Stop bit : 1bit, 2bit
  • Error check : CRC-16
  • Max. station number : 32(with Master device)
  • Max. cable length : 1.2km (Note)

Note: This length is the specification of 3 line connection.

LCD display:
Full dot-matrix 128×128 dot LCD display (backlight provided)
A parameter change will rotate the display.

• Parameter settings — Parameters can be set as  follows:
  • IR Switches: Three key switches are provided to set configuration parameters.
  • Digital communication: HART, or Modbus is needed to set parameters.

Counter control: If the digital input is set for counter control, counter control is available for the integrated value and the pulse output.
Zero adjustment: Zero point adjustment can be started by pressing the switch in the converter.
Damping: 0.5, 1 to 60 seconds (selectable in 1 second increments)
“Converter Field re-verification” Mag-Prover –  Toshiba’s Zero span verification tool allows unit to be re-verified using an internal software program. The meter’s excitation current is a NIST traceable parameter. This parameter can be verified in the field through the converter to verify the meter is still within factory calibration. (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
• Digital output: OFF
• LCD display: No display
• HART: No communication
• Modbus: No communication

Power supply:
One of the following can be selected: 100 to 240Vac (allowable voltage range: 80 to 264Vac 50/60Hz)
24Vdc (allowable voltage range: 18 to 36Vdc) or 110Vdc (allowable voltage rangel:90 to 130Vdc)

Surge protection: Arresters are installed in the power supply, digital input/outputs circuit and current signal output circuit to help protect the meter from lightning and improve personnel safety.
Confirmed by following tests
IEC 61000-4-2 Electrostatic discharge immunity test
IEC 61000-4- Electrical first transient/burst immunity test
IEC 61000-4-5 Serge immunity test
Case: Aluminum alloy (equal to IP 67)

Coating:
Acrylic resin-baked coating, pearl–gray colored

Cable connection port:
Cable glands —
LF620F and LF622F with cFMus Approval:
Not provided, 1/2–14NPT male threads are required.

Vibration resistance:
No resonance to the following levels of vibration:

• 10 to 150Hz with acceleration of 9.8m/s2
• 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 7 (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-217

Installation

Dimensions

Note1: Eye bolts are provided at the top for flowmeters sized 8″ (200mm) or above, and further, a roll-prevention base is provided for flowmeters sized 10″ (250mm) or larger.
Note2: Cable glands are not provided for LF654 of cFMus approved type. Refer to the cable connection port at converter.
Note3: 1 inch = 25.4mm

ASME B 16.5 class 150 dimensions:

Meter size (inch)| L1
(inch)| L2
(inch)| L3
(inch)| No. of bolts| Weight (lbs)
---|---|---|---|---|---
1/2| 5.51| 8.07| 9.82| 4| approx. 11.0
1| 6.30| 8.31| 10.43| 4| approx. 16..0
1-1/4| 7.87| 8.62| 10.95| 4| approx. 20.0
1-1/2| 6.69| 8.66| 11.16| 4| approx. 20.0
2| 7.09| 9.09| 12.09| 4| approx. 29.0
2-1/2| 7.87| 9.29| 12.80| 4| approx. 38.0
3| 9.06| 9.69| 13.42| 4| approx. 45..0
4| 9.45| 10.28| 14.77| 8| approx. 64.0
5| 9.84| 10.71| 15.71| 8| approx. 73.0
6| 10.24| 11.34| 16.83| 8| approx. 93.0
8| 11.81| 12.24| 18.99| 8| approx. 139.0.
10| 13.78| 13.15| 21.14| 12| approx. 207.0
12| 15.75| 14.65| 24.14| 12| approx. 315.0
14| 17.72| 14.88| 25.35| 12| approx. 403.0
16| 19.69| 15.79| 27.18| 16| approx. 509.0
18| 21.65| 16.69| 29.17| 16| approx. 617.0

EN 1092-1 PN 16 dimensions:

Meter size (mm)| L1
(mm)| L2
(mm)| L3
(mm)| No. of bolts| Weight (kg)
---|---|---|---|---|---
15| 140| 203| 251| 4| approx. 6.0
25| 160| 209| 272| 4| approx. 7.5
32| 200| 217| 285| 4| approx. 10.0
40| 170| 218| 288| 4| approx. 10.5
50| 180| 232| 310| 4| approx. 14.5
65| 200| 237| 325| 4| approx. 16.5
80| 230| 255| 347| 8| approx. 21.5
100| 240| 262| 367| 8| approx. 26.5
125| 250| 273| 399| 8| approx. 31.0
150| 260| 285| 425| 8| approx. 37.5
200| 300| 310| 475| 12| approx. 54.0
250| 350| 335| 535| 12| approx. 78.0
300| 400| 365| 588| 12| approx. 117.0
350| 450| 374| 619| 16| approx. 156.5
400| 500| 397| 677| 16| approx. 202.5
450| 550| 420| 730| 20| approx. 249.5

Figure 3. LF654/LF620F combined type flowmeters  Meter Sizes 1/2″ (15) to 18″ (450mm) for Toshiba lay length

Unit: inch (mm)
Note1: Eye bolts are provided at the top for flowmeters sized 8″ (200mm) or above, and further, a roll-prevention base is provided for flowmeters sized 10″ (250mm) or larger.
Note2: Cable glands are not provided for LF654 of cFMus approved type. Refer to the cable connection port at converter. ←
Note3: 1 inch = 25.4mm

ASME B 16.5 class 150 dimensions:

Meter size
(inch)| L1
(inch)| L2
(inch)| L3
(inch)| No. of
bolts| Weight
(lbs)
---|---|---|---|---|---
1/2| 7.87| 8.07| 9.82| 4| approx. 11.0
1| 7.87| 8.31| 10.43| 4| approx. 16..0
1-1/4| 7.87| 8.62| 10.95| 4| approx. 20.0
1-1/2| 7.87| 8.66| 11.16| 4| approx. 20.0
2| 7.87| 9.09| 12.09| 4| approx. 29.0
2-1/2| 7.87| 9.29| 12.80| 4| approx. 38.0
3| 7.87| 9.69| 13.42| 4| approx. 45..0
4| 9.84| 10.28| 14.77| 8| approx. 64.0
5| 9.84| 10.71| 15.71| 8| approx. 73.0
6| 11.81| 11.34| 16.83| 8| approx. 93.0
8| 13.78| 12.24| 18.99| 8| approx. 139.0.
10| 17.72| 13.15| 21.14| 12| approx. 207.0
12| 19.69| 14.65| 24.14| 12| approx. 315.0
14| 21.65| 14.88| 25.35| 12| approx. 403.0
16| 23.62| 15.79| 27.18| 16| approx. 509.0
18| 23.62| 16.69| 29.17| 16| approx. 617.0

EN 1092-1 PN16 dimensions:

Meter size (mm)| L1
(mm)| L2
(mm)| L3
(mm)| No. of bolts| Weight (kg)
---|---|---|---|---|---
15| 200| 203| 251| 4| approx. 6.0
25| 200| 209| 272| 4| approx. 7.5
32| 200| 217| 285| 4| approx. 10.0
40| 200| 218| 288| 4| approx. 10.5
50| 200| 232| 310| 4| approx. 15.0
65| 200| 237| 325| 4| approx. 17.0
80| 200| 255| 347| 8| approx. 21.5
100| 250| 262| 367| 8| approx. 26.5
125| 250| 273| 399| 8| approx. 31.0
150| 300| 285| 425| 8| approx. 38.0
200| 350| 310| 475| 12| approx. 55.5
250| 450| 335| 535| 12| approx. 83.5
300| 500| 365| 588| 12| approx. 125.5
350| 550| 374| 619| 16| approx. 166.0
400| 600| 397| 677| 16| approx. 215.0
450| 600| 420| 730| 20| approx. 257.0

Figure 4. LF654/LF620F combined type flowmeters  Meter Sizes 1/2″ (15) to 18″ (450mm) for ISO lay length

Note1: Eye bolts are provided at the top for flowmeters sized 8″ (200mm) or above, and further, a roll-prevention base is provided for flowmeters sized 10″ (250mm) or larger.
Note2: Cable glands are not provided for LF654 of cFMus approved type. Refer to the cable connection port at converter.
Note3: 1 inch = 25.4mm

ASME B 16.5 class 150 dimensions:

Meter size (inch)| L1
(inch)| L2
(inch)| L3
(inch)| No. of bolts| Weight (lbs)
---|---|---|---|---|---
1/2| 5.51| 6.77| 8.54| 4| approx. 9.0
1| 6.30| 7.01| 9.13| 4| approx. 14.0
1-1/4| 7.87| 7.32| 9.65| 4| approx. 18.0
1-1/2| 6.69| 7.36| 9.88| 4| approx. 18.0
2| 7.09| 7.80| 10.79| 4| approx. 27.0
2-1/2| 7.87| 7.99| 11.50| 4| approx. 36.0
3| 9.06| 8.39| 12.13| 4| approx. 42.0
4| 9.45| 8.98| 13.50| 8| approx. 62.0
5| 9.84| 9.41| 14.41| 8| approx. 71.0
6| 10.24| 10.04| 15.55| 8| approx. 91.0
8| 11.81| 10.94| 17.72| 8| approx. 137.0
10| 13.78| 11.85| 19.84| 12| approx. 205.0
12| 15.75| 13.35| 22.83| 12| approx. 313.0
14| 17.72| 13.58| 24.09| 12| approx. 401.0
16| 19.69| 14.49| 25.91| 16| approx. 507.0
18| 21.65| 15.39| 27.91| 16| approx. 614.0

EN1092-1 PN 16 dimensions:

Meter size (mm)| L1
(mm)| (L2)
(mm)| L3
(mm)| No. of bolts| Weight (kg)
---|---|---|---|---|---
15| 140| 170| 218| 4| approx. 4.0
25| 160| 176| 239| 4| approx. 5.5
32| 200| 184| 252| 4| approx. 8.0
40| 170| 185| 255| 4| approx. 8.5
50| 180| 199| 277| 4| approx. 12.5
65| 200| 204| 292| 4| approx. 14.5
80| 230| 222| 314| 8| approx. 19.5
100| 240| 229| 334| 8| approx. 24.5
125| 250| 240| 366| 8| approx. 29.0
150| 260| 252| 392| 8| approx. 35.5
200| 300| 277| 442| 12| approx. 52.0
250| 350| 302| 502| 12| approx. 76.0
300| 400| 332| 555| 12| approx. 115.0
350| 450| 341| 586| 16| approx. 154.5
400| 500| 364| 644| 16| approx. 200.5
450| 550| 387| 697| 20| approx. 247.5

Figure 5. Separate type detectors LF654 Meter sizes 1/2″ (15) to 18″ (450mm) for Toshiba lay length

Note1: Eye bolts are provided at the top for flowmeters sized 8″ (200mm) or above, and further, a roll-p revention base is provided for flowmeters sized 10″ (250mm) or larger.
Note2: Cable glands are not provided for LF654 of cFMus approved type.
Note3: 1 inch = 25.4mm

ASME B 16.5 class 150 dimensions:

Meter size (inch)| L1
(inch)| L2
(inch)| L3
(inch)| No. of bolts| Weight (lbs)
---|---|---|---|---|---
1/2| 7.87| 6.77| 8.54| 4| approx. 9.0
1| 7.87| 7.01| 9.13| 4| approx. 14.0
1-1/4| 7.87| 7.32| 9.65| 4| approx. 18.0
1-1/2| 7.87| 7.36| 9.88| 4| approx. 18.0
2| 7.87| 7.80| 10.79| 4| approx. 27.0
2-1/2| 7.87| 7.99| 11.50| 4| approx. 36.0
3| 7.87| 8.39| 12.13| 4| approx. 42.0
4| 9.84| 8.98| 13.50| 8| approx. 62.0
5| 9.84| 9.41| 14.41| 8| approx. 71.0
6| 11.81| 10.04| 15.55| 8| approx. 91.0
8| 13.78| 10.94| 17.72| 8| approx. 137.0
10| 17.72| 11.85| 19.84| 12| approx. 205.0
12| 19.69| 13.35| 22.83| 12| approx. 313.0
14| 21.65| 13.58| 24.09| 12| approx. 401.0
16| 23.62| 14.49| 25.91| 16| approx. 507.0
18| 23.62| 15.39| 27.91| 16| approx. 614.0

EN1092-1 PN 16 dimensions:

Meter size (mm)| L1
(mm)| (L2)
(mm)| L3
(mm)| No. of bolts| Weight (kg)
---|---|---|---|---|---
15| 200| 170| 218| 4| approx. 4.0
25| 200| 176| 239| 4| approx. 5.5
32| 200| 184| 252| 4| approx. 8.0
40| 200| 185| 255| 4| approx. 8.5
50| 200| 199| 277| 4| approx. 13.0
65| 200| 204| 292| 4| approx. 15.0
80| 200| 222| 314| 8| approx. 19.5
100| 250| 229| 334| 8| approx. 24.5
125| 250| 240| 366| 8| approx. 29.0
150| 300| 252| 392| 8| approx. 36.0
200| 350| 277| 442| 12| approx. 53.5
250| 450| 302| 502| 12| approx. 81.5
300| 500| 332| 555| 12| approx. 123.5
350| 550| 341| 586| 16| approx. 164.0
400| 600| 364| 644| 16| approx. 213.0
450| 600| 387| 697| 20| approx. 247.5

Figure 6. Separate type detectors LF654 Meter sizes 1/2″ (15) to 18″ (450mm) for ISO lay length

Note: Cable glands are not provided for LF622F cFMus approved type.
Refer to the part Cable connection port at converter.
Note: 1 inch = 25.4mm

Figure 7. Separate type converter LF622F

External Connections

Combined type LF654/LF620F flowmeters

*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 8. Combined type LF654/LF620F flowmeters Wiring Diagram

Separate type LF654/LF622F flowmeters

Figure 9. Separate type LF654/LF622F flowmeters wiring Diagram
Table 1. LF620F and LF622F Converters Signal Table

L2 (－)
GND| Ground (for arrester)|
FG| Frame ground|
DI| Digital Input (20～30Vdc)| __ I/O cable (CVV-S)
DO1| Digital Output 1
DO2| Digital Output 2
COM| Signal Common for DI, DO1, DO2
＋| __ Current Output (4～20mAdc)
__ －|
X| __ Excitation Output| Excitation cable (for LF622F only)
Y
E
A| __ Signal Input| Signal cable (for LF622F only)
B
G
T+| Modbus(+)| Twisted-pair polyethylene insulated vinyl sheath cable (JKEV,AWG24(0.2mm2))
T-| Modbus(-)
TG| Modbus(GND)

Note: The symbol of the terminal is changed as follows for Modbus.
DO2 → T+, DI → T-, COM → TG

Wiring Precautions

1. Explosion-proof type flowmeters are not provided with 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. 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 10.

4. DO1, DO2, and DI use the same common terminal (COM). This COM can not be connected to other equipments which have their own ground terminal.(Power supply for connecting to DI or DO, etc…) Need to wire separately.

Wiring Precautions (Modbus)

1. For the 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. General 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.
3. When you carry out cable end treatment, use a dedicated cable stripper to avoid the core wire of the cable being nicked or damaged. In addition, for cables, be careful of allowable maximum bend diameter. (Do not allow excessive twisting or bending of cables).
4. The electromagnetic flowmeter is not equipped with terminating resistors. Use the terminating resistor unit for Modbus or junction box, if.
5. Only one Modbus cable goes cable gland of the Electromagnetic Flowmeter. Please use the junction box at system configuration.
6. Install a terminator to flowmeter that connected to the end of Modbus network.

Figure 10. Electrical Conductivity and Cable Length

Meter Size

To select the meter size:
See Table 2 and 3 to find meter sizes within the velocity of 0.3 to 39.4 ft/s (0.1 to12m/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 39.4ft/s (12m/s) in terms of flow velocity.

Table 2. Flow Rate and Flow velocity (English unit)

Table 3. Flow Rate and Flow velocity (SI unit)
Unit: m3/h

m/s

| 12

m/s

15| 0.06362| 0.1908| 0.6361| 1.908| 7.634
25| 0.1767| 0.5301| 1.767| 5.301| 21.21
32| 0.2895| 0.8686| 2.895| 8.686| 34.74
40| 0.4523| 1.357| 4.523| 13.57| 54.29
50| 0.7067| 2.120| 7.067| 21.20| 84.82
65| 1.195| 3.583| 11.95| 35.83| 143.4
80| 1.809| 5.428| 18.09| 54.28| 217.1
100| 2.827| 8.482| 28.27| 84.82| 339.3
125| 4.417| 13.25| 44.17| 132.5| 530.1
150| 6.361| 19.08| 63.61| 190.8| 763.4
200| 11.31| 33.93| 113.1| 229.3| 1,357
250| 17.67| 53.01| 176.7| 530.1| 2,121
300| 25.45| 76.34| 254.5| 763.4| 3,054
350| 34.64| 103.9| 346.4| 1,039| 4,156
400| 45.23| 135.7| 452.3| 1,357| 5,429
450| 57.25| 171.7| 572.5| 1,717| 6,871

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.
• When placing the flowmeter temporarily on the floor, support it, i.e., with a block so that the flowmeter does 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 LF654 series flowmeters, refer to Tables 4 and 5 (Type Specification Codes). An entry must be made for each of the columns in each of these tables.

2. Fluid characteristics:

3. Type of fluid to be measured and its characteristics

4. Fluid temperature

5. Fluid pressure

6. Electrical conductivity of the fluid

7. Measuring range

8. I/O function setting

9. Ordering scope
   Flow calibration data

10. Other items
    Specifications other than standard items

Consult a Toshiba representative when choosing materials for lining, electrodes, and grounding rings.
Toshiba International Co rp. (Houston) stocks Hazardous location certification type flowmeters as stan dard inventory.

Table 4. Specification Code (Flange type detector LF654 Series)

Model| Specification Code| __ Description| Lining|
---|---|---|---|---
1| 2| 3| 4| 5| 6| 7| 8| 9| 10| 11| 12| 13| 14|
PU| PFA|
L| F| 6| 5| | | | | | | | | | | Flange type electromagnetic flowmeter detector| l| l|
| __

4

| | | | | | | | | | Usage
cFMus Division 2 Hazardous Location| √| √|
| | | | | | | | | | Meter size| √| √|
D| ½”(15mm)| √| √|
E| 1″(25mm)| √| √|
S| 1¼”(32mm)| √| √|
F| 1½”(40mm)| √| √|
G| 2″(50mm)| √| √|
W| 2½”(65mm)| √| √|
H| 3″(80mm)| √| √|
J| 4″(100mm)| √| √|
U| 5”(125mm)| √| √|
K| 6″(150mm)| √| √|
L| 8″(200mm)| √| √|
M| 10″(250mm)| √| √|
N| 12″(300mm)| √| √|
P| 14″(350mm)| √| √|
Q| 16″(400mm)| √| √|
R| 18″(450mm)| √| √|
| | | | | | | | | Mounting Style  (Note1)| | |
L| Detector/Converter combined type| √| √|
M| Detector/Converter separate type| √| √|
| | | | | | | | Connection flange standard, Overall length| | |
C| ASME B 16.5 class 150, ISO length| | |
D| ASME B 16.5 class 300, ISO length (Note 5)| | |
1| ASME B 16.5 class 150, Toshiba length| | |
2| ASME B 16.5 class 300, Toshiba length| | |
| | | | | | | Electrode Material (Note2)(Note 3)| | |
B| 316L stainless steel (Standard for Polyurethane lining)| | –|
C| Ti (titanium)| | |
D| Pt-Ir (platinum/iridium) (Note 6)| | |
E| Ta (tantalum) (Note 6)| | |
F| Hastelloy C (Equivalent) (Standard for PFA lining)| –| |
| | | | | | Lining Materials (Note2) (Note 4)| | |
C| PFA| –| |
P| PFA (NSF certified)| –| |
N| Polyurethane (NSF certified)| | –|
U| Polyurethane| **| –|
| | | | | Grounding Ring Material (Note 6)| | |
C| 316 stainless steel| | |
D| 316L stainless steel| | |
E| Ti (titanium)| | |
F| Ta (tantalum) (Note 6)| | |
G| Pt-Ir (platinum/iridium) (Note 6)| | |
H| Hastelloy C (Equivalent)| | |
| __**

A

| | | Flow and calibration velocity range| __| __|
1.0 to 32.8 ft/s (standard range calibration)|
| __

A

| | Excitation and Signal Cables| __| __|
not provided|
| __

F

| Coating| __| __|
PU coating pearl-gray colored|
*Direct burial detector coating

Contact Toshiba International Corp. (Houston)

|

Size code explanation: √ : Object ⚫: Standard : Option –: Not available
Note1: In case of LF654 with cFMus approval, Cable glands are not provided.
Note2: Consult with Toshiba and your customer when choosing wetted parts materials.
Note3: 316L stainless steel electrodes are provided with NSF-approved PU liner, sizes 4” to 18”.
Hastelloy C electrodes are provided with NSF-approved PFA liner.
Note4: Potting kit is available for IP68/NEMA6P submersible option with remote type NPU/PU(1/2~18inch) & PFA(2-1/2~18 inch) lined Detector.
Note5: ASME B 16.5 class 300 flange is NOT available in 3” & 5” ISO length.
Note6: Pt-Ir are available for less than 2” (50mm). Ta available up to 6”.

Table 5. Specification Code for converters

Model| Specification Code| Contents| LF620
type| LF622
type
---|---|---|---|---
1| 2| 3| 4| 5| 6| 7| 8| 9| 10| 11| 12| 13| 14
L| F| 6| 2| | | | | | | | | | | Electromagnetic flowmeter converter
| 0| | | | | | | | | | Combined (Integral) type| | –
2| Separate (Remote) type| –|
| __ F| | | | | | | | | Purpose
cFMus class I, Division 2 approved| __| __
| __ B| | | | | | | | Shape
Standard type with case (2022 renewed version)| __| __
| A C
E| | | | | | | Converter mounting fitting
None
Panel, Accessory for wall mounting (BNP material: SUS304)
Accessory for pipe installation (BNP material: SUS304)| __
–
–| __**

| 2| | | | | | Digital input/output
Digital output points 2 (DO1+DO2) +Digital input point 1 (DI)| | __
| 1
3| | | | | Current output and Communication function(Note1)
Current output + HART communication
Current output + Modbus (RS485) communication|
|

| 1
2
3| | | | Power supply(Note2)
100Vac-240Vac 50/60Hz, 110Vdc
24Vdc 110Vdc|

|

| __**

E

| | | Instruction manual English| __****| __****

Code explanation: ⚫: Standard **: Option –: Not available
Note 1: When Modbus communication is provided, digital output points 1(DO1) and digital output points (DO2), digital input point 1(DI), HART communication cannot be used.
Refer to Table 6 for more details.
Note2:** Select 110Vdc for test report inspected under the condition of 110Vdc.

Table6. Communication functions and output selection table

Code explanation: ✓:Available Ｘ:Not Available
Note: When digital output 1 function and Modbus communication function are used at one time, TG (signal ground) of the Modbus communication function cannot be connected (2 line connection).
Misuse of this product can result in damages to property or human injury. Read related manuals carefully before using this product.
Specifications are subject to change without notice.
Printed in Japan Feb., 2024
© Toshiba Infrastructure Systems & Solutions Corporation 2024
All Rights Reserved.

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