PTFE Liquid Flow Sensors

FPR-1500

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Provides Highly Linear 0 to 5 Vdc Output Signal and Buffered Linear Pulse Output Signal for Totalizing
Micro-Liquid Flow Rates as Low as 15 ml/min Can Be Measured with High Precision
Usable with a Variety of Low Viscosity Liquids Including Many Corrosive Liquid Chemicals

Turbine, Paddle Wheel & Positive Displacement Flow Meters - View related products

Description

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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Part Number/ Desc.

Qty

Description

FPR1501

Consult Sales

Availability:

15 to 100 ml/min, 1/8" tube fitting

FPR1502

Consult Sales

Availability:

25 to 200 ml/min, 1/4" tube fitting

FPR1503

Consult Sales

Availability:

50 to 500 ml/min, 1/4" tube fitting

FPR1504

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Availability:

100 to 1000 ml/min, 1/4" tube fitting

FPR1505

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Availability:

0.2 to 2.0 l/min, 1/4" tube fitting

FPR1506

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Availability:

0.5 to 5.0 l/min, 3/8" tube fitting

ACCESSORIES

FPR1500-PW

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Availability:

Power supply, 115 Vac to 12 Vdc

FPR1500-230PW

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Availability:

Power supply, 230 Vac to 12 Vdc, with European plug

DP25B-E

AUD745.10

Availability: 7 weeks

Analog input panel meter with 12 volt excitation

† All amounts shown in AUD
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, AUD745.10