PTFE Liquid Flow Sensors
DISCONTINUED: Replaced by FTB600, or contact sales .
- 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
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- Accuracy Value ±3% FS
- Maximum Operating Pressure 4 bar (60 psig) max
- Maximum Ambient Temperature 70°C (158°F)
- Output Signal 0 to 5 Vdc
- Minimum Ambient Temperature 0°C (32°F)
- Power Source 50 mA
- Supply Voltage 12 to 15 Vdc
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.
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.
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