MULTIPLE FLOW RANGES 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 Specification

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 Media:	Tap Water @ 70° F

Electronic Specifications
Electronic output:	0-5 VDC (Standard) - 0-10 VDC (Optional)
Power Requirements:	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" (28mm)	1-3/32" (28mm)	1-5/16" (34mm)
B	5-1/4" (134mm)	5-1/4" (134mm)	5-1/4" (134mm)

Specifications