Toshiba specifications Model LF502 Detector, Model LF232*F converter

TIC-LF502A

Required straight pipe length:

10D minimum on upstream side and

5D minimum on downstream side

Note: D is a nominal meter size.

Fluid conductivity: 100µS/cm minimum

Fluid temperature: 32 to 131 °F (0 to 55 °C )

Ambient temperature: 14 to 122 °F (-10 to 50 °C )

Dimensions and Weights: See figures 3 to 5.

Power supply:

100 to 120 Vac (80 to 132 Vac), 50/60Hz

Power consumption: 50VA (30W) or less

■Model LF502 Detector

Meter sizes: 6” (150 mm ), 8” (200 mm ), 10” (250

mm), 12” (300 mm ), 14” (350 mm ), 16” (400 mm ), 20” (500 mm ), 24”(600 mm )

Fluid pressure:

0 psi or 0 bar (0 MPa) to the pressure limited by flange standard

(fully-filled condition)

Connection flange standards:

ANSI 150, JIS 10K

Structure:

IP67 and NEMA 4X Watertight (std. )

IP68 and NEMA 6P Submersible (opt.)

Coating: Phthalic acid resin coating, pearl-gray colored (standard for watertight type) or black tar epoxy (option for watertight type and specified exclusively for submersible type)

Principal materials:

Case — carbon steel

Measuring pipe — 304 stainless steel Linings — The following are the standards:

Meter size	Standard specification
6” to 16” (150 to 400mm )	EPDM rubber
20” & 24” (500 & 600mm )	Chloroprene rubber

Electrodes — 316L stainless steel (std.) Grounding rings — The following are the

standards.

Meter size	Standard specification
6” to 16” (150 to 400mm )	316 stainless steel
20” & 24” (500 & 600mm )	304 stainless steel

See Table 1 for optional materials and other related information.

Coating: phthalic acid resin coating (std.), Pearl-gray colored

Cable connection port:

Cable glands: Provided as standard, R(PT) 1/2 male screw.

Applicable diameter: 0.433 to 0.512 inch (11

to 13mm )

■Model LF232*F converter

Input signals

Analog signal — the voltage signal from detector, proportional to process flow rate.

Digital input DI (opt.)

(added when 9th digit of specification code is ”3”) Voltage level: High level 20 to 30 V dc

Low level 2 V dc or less Input resistance: 2.7 kΩ

Number of inputs: 2 points (DI1 and DI2)

DI functions:

For digital input function, either of the following functions can be selected.

•Range switching

One Digital Input is used: switching between large and small ranges of forward/reverse, 2-range measurement.

Two Digital Inputs are used: switching between ranges of single direction, 4-range measurement.

•Totalizer control input

Totalizer Start/Stop control or Reset/Start

•Output hold input

Fixed with set value for current output and pulse output (loop check)

•Zero adjustment

Starts zero adjustment (on-stream at zero flow rate) when DI voltage level goes low after remaining high for 10 to 20 seconds.

Output signals

Current output:

4–20mAdc (load resistance 0 to 1KΩ)

Digital output (DO) — One point (std.) and three 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～DO4 (opt.)

(Added when 9th digit of specification code is “3”) Out put type: Solidstate relay output (non polarity) Number of outputs: 3 points

Output capacity: 150Vdc, 150mA maximum or 150Vac (peak to peak), 100mA maximum

DO functions—Four digital output function, either of the following functions can be selected.

• Totalizer pulse output

DO1 or DO2 can be selected (Forward direction pulse and reverse direction pulse can be assigned

2