Flowmeter LF410/LF620

Electromagnetic Flowmeter (PDF)

LF410/LF620(Combined type) image. LF622 & LF410 (Separate type) image.
FM(C US) APPROVED image. Certification No. Z01207 image.

General Specificaition

With the "Functional Magnetic Field Distribution" technology, LF410 is strong against unstable flow. From 15mm to 100mm, they are excellent for abrasive fluid because of Ceramic lining.

Combined with a multi-functional converter LF620 (Combined type) or LF622 (Separate type) equipped with its original Noise-suppression Circuit & Advanced Algorithms, The LF410 has a very high tolerance to noise, giving the unit a very stable output even for slurry fluid measurement.

The AF900 Hand-held terminal (HART(*1) Communicator) can be used for remote control. PROFIBUS-PA(*2) or Modbus(*3) interface is available as an option.

  • *1 HART protocol (Highway Addressable Remote Transducer) is a communication protocol for industrial sensors recommended by the HCF (HART Communication Foundation).
  • *2 PROFIBUS is the communication protocol for factory automation and process automation that the PROFIBUS Organization recommends.
    Instead of analog control with a conventional analog signal (4-20mA), it is one kind of the fieldbus which digitizes all signals.
    Flowmeters support PROFIBUS-PA.
  • *3 Modbus is the communication protocol that Modicon Inc. developed.
    Physical layer is RS485.

Main Specifications

Main Specifications List

This table can be scrolled horizontally.

Main Specifications List
Mounting style Wafer type
Meter size 15mm, 25mm, 40mm, 50mm, 80mm, 100mm
Measuring range in terms of flow velocity 0-0.3m/s to 0-10m/s (0-0.1m/s to 0-0.3m/s as option)
Accuracy +/-0.2 % of Rate
* This pulse output error result is established under standard operating conditions at Toshiba's admitted flow calibration facility.
* Individual meter measurement error may vary up to +/-0.5% of Rate at 1.64ft/s (0.5m/s) or more and +/-0.3% of rate +/-0.039 inch/s (1mm/s) at 1.64 ft/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.
Lining materials (Meter size: mm) Ceramic tube: 15 to 100mm
Fluid temperature -10 to +180℃ (Ceramics)
*+120℃ above is Separate type
Electrode materials Hastelloy C (Standard)
Ti, SUS316L
Grounding ring materials SUS316 (Standard)
SUS316L, Ti, Hastelloy C
Ambient tempearture -20 to +60℃
Structure IP67
Power consumption 10W (14VA) at AC100V and Excitation current: 0.2A
Power supply AC100V to AC240V, 50/60Hz (Standard) Allowable voltage AC80V to AC264V
DC24V (Option) Allowable voltage DC18V to DC36V
DC110V (Option) Allowable voltage DC90V to DC130V