Toshiba LF470/LF612 specifications Model LF470 Detectors, Model LF612 converters

TIC-LF470B

Model LF470 Detectors

Fluid pressure: -15 to 150 psi, or -1.0 to 10 bar (-0.1 to 1 MPa)

Principal materials:

Measurement tube – Alumina ceramics Electrodes – Platinum

Pipe connection port: Standard – 316 stainless steel Option – Ti (titanium),

Polyvinyl chloride (shock-resistant)+ Ta (Tantalum) for grounding plate, Polyvinyl chloride (shock-resistant)+ Pt-Ir grounding plate,

Hastelloy C (Equivalent)

Dedicated preformed cables:

･Signal cable – 2-wire shielded chloroprene sheathed cable

Overall length: 0.28 inch (7mm)

Length: 0.20 inch (5m)

･Excitation cable – 3-wiren chloroprene sheathed cable

Overall length: 0.28 inch (7mm)

Length: 0.20 inch (5m)

Coating: phthalic acid resin coating pearl-gray colored

Weight: approximately 2.2 lb (1.0 kg) (for each size excluding cables)

Model 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: 2.7kΩ

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 communication.

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:

Solid-state 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)

3.6to 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

•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.

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