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| Freeflow sensor |
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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%
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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 |
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| 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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