 “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 and Rugged Design
Measures less than 10" long and 3-1/2" wide, with a flanged mounting base for simple installation.
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 Offered
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%.
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 |
Polycarbonate |
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) |
| Pressure Differential: |
See graph on right |
| 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 |
Insert drawing
Mechanical Sizing Code
| DIM |
3/8" Female NPTF |
1/2" Female NPTF |
3/4" Female NPTF |
| A |
7-3/4" (197mm) |
7-3/4" (197mm) |
10" (254mm) |
| B |
3-1/2" (89mm) |
3-1/2" (89mm) |
3-1/2" (89mm) |
| C |
6-13/64" (158 mm) |
6-13/64" (158 mm) |
6-13/64" (158 mm) |
| D |
2" (51mm) |
2" (51mm) |
2" (51mm) |
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