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Low Velocity Paddlewheel Flow Meter

Low Flow Sensors

$347.85

Item# FP8501A

Volume discounts available
Volume Discount Schedule
Quantity Price each
1-9 $347.85
10-24 $330.46
25-49 $323.50
50-99 $309.59
100-199 $302.63
200+ $295.67

In stock

Lead Time (If not in stock): 7 Days
Low Flow Sensors FP8501A FP8501A
  • High Resolution
  • Low Power
  • Flow Rates As Low As 0.3 fps
  • Open Collector Output
  • Very Low Pressure Drop

FP8501A Model Options

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Edit these specs to order a different model. Not all combinations are valid. Options compatible with previous selections will be in bold.

*Highlighted options are not compatible. Please select a different combination.

Max Operating Pressure
Wetted Materials
Compatible Fittings
Pipe Size Range
Category
Velocity Range
Accuracy
Max Process Temperature
Output Signal
Supply Power
Display


The FP-5600 and FP8500A series low flow sensors are high resolution, low power devices ideal for measuring flow in piping systems with extremely low velocities. Utilizing insertion paddlewheel technology, these sensors are easy to install and maintain. They incorporate state-of-the-art, advanced Hall-effect design, allowing them to operate with a wide range of voltages and current supplies. The sensors have a wide flow range and reverse polarity protection. The insertion design easily adapts to a wide range of applications.

Flow Range
Pipe
Size
½" ¾" 1" 1¼" 1½" 2" 2½" 3" 4" 5" 6" 8" 10" 12"
Range
(gpm)
0.3
to
19
0.5
to
34
0.8
to
54
1.4
to
94
1.9
to
127
3.2
to
210
4.5
to
300
7.0
to
461
12
to
794
19
to
1247
27
to
1801
47
to
3119
74
to
4915
105
to
6977

SPECIFICATIONS
Output Signal: Open collector, sinking
Output Frequency: 15 Hz per fps nominal
Operating Range: 0.3 to 20 fps
Pressure/Temperature:
    PP sensor housing: 180 psi @ 20°C (68°F), 25 psi @ 85°C (185°F)
    PVDF sensor housing: 200 psi @ 20°C (68°F), 25 psi @ 85°C (185°F)
Power Requirements: 3.3 to 24 Vdc <1.5 mA @ 3.3V to 6 Vdc, <20 mA @ 6V to 24 Vdc
Pipe Size Range: 0.5 to 24"
Repeatability: ±0.5% of full range
Linearity: ±1% of full range
Materials: Refer to ordering information for material options available
O-rings: FKM
Cable Type: Twisted pair, foil shield with drain wire
Cable Length: 7.6 m (25'); 300 m (1000') max
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Can this product be used to measure flow in an open area (without housing)?

Asked by: Amit213
Thank you for your inquiry about the paddle wheel sensor. Unfortunately, our paddle wheel sensors require a fitting to measure the flow rate in a closed pipe, not in an open channel.
Answered by: JC ENGR
Date published: 2021-01-21

We replaced an older FP-5601 (purchased in 2011, serial number 61106270253) with a newer FP-5601 (purchased in 2018, serial number 61504140751). Have the K factor conversions changed over time between these two instruments?

Asked by: davidb
Thank you for your question? The K-Factors of the FP-5601 have not changed over the years. They only change with different pipe sizes.
Answered by: application engineer je
Date published: 2019-07-02
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Accessories
Integral mount kit for use with FP8500 series paddlewheels
$70.38
0 In Stock
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