PTFE Liquid Flow Sensors |
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FPR1501 Series flow sensors can
measure extremely low flow rates
from 15 mL/min. They are suitable
for a wide variety of industrial,
commercial, and laboratory flow
applications.
Because the FPR1501 flow sensors
have only PTFE and sapphire
wetted surfaces, it is anticipated that
they will replace conventional glass
tube and ball flowmeters in many
applications in which an electrical
signal proportional to flow rate is
desirable, even in very corrosive
applications in which the liquid is
low in viscosity (i.e., less than
10 centistokes).
Models use a Pelton-type turbine
wheel to determine the flow rate of
the liquid. The rotation rate of the
turbine wheel is linear over a large
dynamic range. The electro-optical
system consists of a diode emitting
energy in the infrared spectrum. Light
energy is interrupted and passed
from 8 small holes in the small turbine
wheel. This reflected light energy is
detected by a photodiode. Thus, as the turbine
wheel rotates in
response to the liquid
flow rate, electrical
pulses are generated.
Processing circuitry
provides a DC voltage
output and buffered
square-wave output
pulses that are
proportional to
the flow rate.
Tube Fitting:
1/8" tube fittings for flowrates up to 100 ml/min
¼" tube fitting for flow rates from 100 ml/min. to 2 liters/min
3/8" tube fitting for flow rates greater than 2 liters/min.
SPECIFICATIONS
Output Signal: 0 to 5 Vdc, adjustable ±20% (typical) and pulse output from 0 to 300/500 pps (typical) @ 7.5 Vdc peak pulse height-linear
Power Requirements: 12 to 15 Vdc regulated, 50 mA
Standard Sensor Material: PTFE, sapphire, Perfluoroelastomer gasket; PFA compression tube fittings
Pressure Rating: 4 bar (60 psig) max
Temperature Rating: 0 to 70°C (32 to 158°F)
Temperature Sensitivity: ±0.2%/°C
Accuracy: ±3% FS
Repeatability: ±0.2% FS from 20 to 100% of rated max flow
Dimensions: 55.6 x 48.0 x 58.9 mm (2.19 x 1.89 x 2.32") not including fittings
Applicable Liquids: Many low-viscosity (<10 centistokes) liquids; check compatibility with wetted materials; specify liquid when ordering
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† Price are shown in RMB.
Note: Comes complete with 0.9 m (3') long cable with pigtails and operator's manual.
Note: Maximum differential pressure (delta P) across flow sensor occurs at maximum rated flow using water at 23°C (73°F). At 50% of rated flow,delta P is 0.25 of value at max. rated flow, and, at 20% of rated flow, delta P is 0.04 of value at max. rated flow.
Ordering Example: (1) DP25B-E 1/8 DIN Panel meter with 12 volt excitation, ¥3,525.00,
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