Freeflow sensor

Freeflow sensor

Accurate & Economic flow sensor:
Minimally invasive, low cost segmented wedge flow sensor. Used to monitor and control process water.
No moving parts: The segmented wedge element provides a simple and reliable restriction for sensing flow as related to pressure differential
Unrestricted mounting: Allows the designer to install the meter in any orientation – horizontal, vertical or inverted.
Compact & rugged design: Measures less than 10" long and 3-1/2" wide, with a flanged mounting base for simple installation.
Multiple flow range available: The FreeFlow™ Sensor is offered with several ranges of calibration to accommodate the requirements typical to process water applications.
Multiple port sizes: Standard selection of NPT ports reduces the amount of adapters required for installation.
Low-cost precision: Measuring accuracy of ±2% of range and repeatability of ±1/2%

Engineering specifications:

The FreeFlow™ Sensor Shall:
• Use the segmented wedge differential producer to measure flow rate as related to pressure.
• Not require inlet or outlet straight plumbing, or require vertical pipe mounting.
• Have a measuring accuracy of ±2% of full scale with ±1/2% repeatability.
• Be Lake Monitors No. FF– _ _ _– _ _ _– _ _

Materials of Construction
End ports	PVC
Wedge element	PVC
Pressure sensor	Polyetherimide
Electrical enclosure	Polyetherimide
Indicator	Polysulphone

Performance
Measuring accuracy	±2% of full-scale
Repeatability	±1/2% of full-scale
Full scale flow measuring range	5-15 GPM (19-57 LPM)
Turn down ratio (all ranges)	8:1
Maximum operating pressure	125 PSIG (8.6 bar)
Maximum operating temperature	170°F (76°C)
Standard calibration fluids	Tap water @ 70°F (21°C)

Electronic Specifications
Electronic output	0-5 VDC (Standard) - 0-10 VDC (Optional)
Power requirments	12-35 VDC
Maximum current consumption	< 50mADC
Minimum load resistance	1000 Ohms
Maximum transmission distance	< 200 feet
Resolution	Infinite
Response time	< 500 mS to 90% (step change)
Protection	Short circuit, transient and reverse polarity

Mechanical Size Code

DIM	3/8" Female NPTF	1/2" Female NPTF	3/4" Female NPTF
A	6-7/8" (175mm)	6-7/8" (175mm)	7-1/2" (191mm)
B	2-7/32" (57mm)	2-7/32" (57mm)	2-7/32" (57mm)
C	1-3/32" (101mm)	1-3/32" (28mm)	1-5/16" (34mm)
B	5-1/4" (134mm)	5-1/4" (134mm)	5-1/4" (134mm)

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