Toshiba LF502 - Manual (Page 2)

TIC-LF502A
2
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
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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 )
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Model LF232*F converter
Input signals
Analog signal — the voltage signal from detector,
proportional to process flow rate.
Digital input DI (opt.)
(added when 9
th 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 k Ω
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 1K Ω)
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 9 th 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