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Field Intelligent Device – Mount Anywhere Series - Flanged
Electromagnetic Flowmeter
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 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 4–20 mAdc 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 LF620
(combined type) or LF622 (separate type) equipped
with its patented Noise-Sentry original noise-
suppression circuit and advanced algorithms. The
LF430 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. The terminal block in LCD side
make easy to wire in case of the combined type.
*
HART protocol (Highway Addressable Remote Transducer) is a
communication protocol for industrial sensors recommended
by the HCF (HART Communication Foundation).
** DevComm2000 Smart Device Communicator available
through TIC for performing HART device configurations on
PC or laptop.
*
PROFIBUS is the communications protocol for factory and
process automation that the PROFIBUS Organization
recommends. Instead of analog control with a conventional
analog signal (4-20 mA), it is fieldbus which digitizes all
signals. Flowmeters support PROFIBUS-PA.
*
Modbus is the communication protocol that Modicon Inc.
developed. Physical layer is RS485.
Combined type
Figure1. Configuration
Separate type
1/2" to 24" (15 to 600 mm)
LF430/LF620
LF434/LF620F
Figure2. LF430 Mount-Anywhere series
Flowmeters
Specifications
Overall Specifications
Measurement range in terms of flow velocity:
0 –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)
range is available as an option.
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'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 1.64 ft/s or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual
meter's measurement error.
< 20" and 24" ( 500mm and 600mm )>
±0.3 % of Rate
*
* This pulse output error result is established under standard
operating conditions at Toshiba's flow calibration facility,
Fuchu Japan.
* Individual meter measurement error may vary up to ±0.5% of
Rate at 3.28 ft/s (1.0m/s) or more and ±0.3% of rate ±0.079
inch/s (2mm/s) at 3.28 ft/s (1.0m/s) or less.
* Current output: plus ± 8µA (0.05% of span.)
* Refer to individual calibration data for each individual meter's
measurement error.
LF434 /LF620
LF434 /LF622
LF430
LF622
LF434
LF622F
Cert. No.
Cert. No. PM09896
Z01207
For Hard rubber
lined flowmeter
TIC-LF434H
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Related Manuals for Toshiba LF434 /LF620
Summary of Contents for Toshiba LF434 /LF620
- Page 1 PROFIBUS is the communications protocol for factory and * This pulse output error result is established under standard process automation that the PROFIBUS Organization operating conditions at Toshiba's flow calibration facility, recommends. Instead of analog control with a conventional Fuchu Japan. (NIST Traceable).
- Page 2 TIC-LF434H Note: The test results were obtained and demonstrated at Fluid conductivity: 5µS/cm minimum TOSHIBA's flow calibration facility, Fuchu Japan. Fluid temperature: Drinking water approvals: 14 to 248 °F (-10 to +120 °C): Hard rubber liner: NSF Teflon PFA lined flowmeter Note: Hard rubber liner is available from 4”...
- Page 3 TIC-LF434H Cable connection port: for separate type detectors. 150Vac (peak to peak), 100mA maximum Note: DO2 cannot be used with the Modbus Cable gland — communication. LF430: Provided as standard, R(PT) 1/2 male DO1 and DO2 functions — One of the following screws.
- Page 4 Mag-Prover “Field re-verification” – direction will not cause any defect to unit. Toshiba’s Zero span calibration tool allows Note: Avoid using the flowmeter in an environment with unit to be re-calibrated and verified using an constant vibration. internal software program (For more...
- Page 5 Installation Dimensions 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 LF434 of cFMus approved type. Refer to the part Cable connection port at detector.
- Page 6 TIC-LF434H Unit: inch (mm) 3.46 (88) 4.96 (126) 1.38 (35) 3.58 (91) 1.57 (40) (L1) 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 LF434 of cFMus approved type.
-
Page 7: External Connections
TIC-LF434H Attachment LCD display I/O cable ground Excitation cable ground Plate Power supply Signal cable ground cable ground Option cable ground Note: Cable glands are not provided for LF622F cFMus approved type. IR Switch Refer to the part Cable connection port at detector. Figure 5. - Page 8 TIC-LF434H Separate type LF430/LF622 flowmeter and LF434/LF622F flowmeters Instrument panel : Ordered separately Grounding with 100Ω or less Ⅳ wire 5.5mm or more ground resistance Power switch Grounding with 100Ω or less (External double-pole power switch) ground resistance Power supply Thick walled steel conduit Current output (4～20mAdc) Signal cable...
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Page 9: Wiring Precautions
TIC-LF434H Wiring Precautions (6) The electromagnetic flowmeter is not equipped with (1) Explosion proof type flowmeters are not provided terminating resistors. Use the terminating resistor with cable glands. unit for PROFIBUS-PA or junction box, if Refer to the part Cable connection port at detector necessary. -
Page 10: Ordering Information
Specifications other than standard items 150 (6) 3.144 2,500 29.283 200 (8) 2.653 4,500 29.649 Consult a Toshiba representative before ordering 250 (10) 3.395 7,000 29.517 when choosing materials of the wetted parts such as 300 (12) 3.537 10,000 28.283 lining, electrodes, and grounding rings. - Page 11 TIC-LF434H Table 6. Specification Code (Flange type detector LF430 Series) Model Specification Code Detector category Description Normal type Class 1 Div 2 9 10 11 12 13 14 Gr.-A Gr.-B Gr.-C Gr.-D Gr.-E √ √ L F 4 Normal specification type √...
- Page 12 Note4: EPDM rubber lining or Hard rubber lining is available to choose only in this specification. Note5: Consult Toshiba before ordering when choose materials at the wetting parts. Note6: Check Table 1 whether your chosen meter size meets this directive or not when the meter is shipped to EU. If yes, choose this code.