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Signet Flow Sensors
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| Output Signal: | 1V p-p per ft/s nominal |
| Output Frequency: | 6 Hz per ft/s nominal |
| Operating Range: | 1 to 20 ft/s |
| Pressure/Temperature: | PP sensor body:
180 psi @ 68 degrees F, 25 psi @ 185 degrees F PVDF sensor body: 200 psi @ 68 degrees F, 25 psi @ 185 degrees F |
| Power Requirements: | none |
| Pipe Size Range: | 0.5 to 36 in. |
| Repeatability: | +/-0.5% of full scale |
| Linearity: | 1% of full range |
| Materials: | Refer
to ordering info. for material options available. O-rings: Viton® Cable type: twisted pair, foil shield with drain wire Cable length: 25 ft. (200 ft. max.) |
| Quality Standards: | CE, FM (Class I, II, III/Div. 1/Groups A-G) |
For maximum linearity and accuracy, the sensor should be located in a straight run of pipe upstream and downstream of the sensor. Major obstructions such as pumps or throttled valves will require longer straight runs.

| In horizontal pipe runs with no air pockets or sediment present, mount the sensor/fitting in the 12 o'clock position or 6 o'clock position. If sediment or air pockets are present, tilt the sensor/fitting at a maximum angle of 45° to overcome these obstacles. In vertical runs, upward flow is required. Full pipes are required. | ![]() |

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Part No. |
Housing Material |
Shaft Material |
Rotor |
Pipe Size (in.) |
| P51530-P0 | Polypropylene | Titanium | Black PVDF | 0.5 to 4 |
| P51530-P1 | Polypropylene | Titanium | Black PVDF | 5 to 8 |
| P51530-P2 | Polypropylene | Titanium | Black PVDF | 10 - up |
| P51530-V0 | Natural PVDF | Hastelloy C | Natural PVDF | 0.5 to 4 |
| P51530-V1 | Natural PVDF | Hastelloy C | Natural PVDF | 5 to 8 |
| P51530-T0 | Natural PVDF | Natural PVDF | Natural PVDF | 0.5 to 4 |
| P51530-T1 | Natural PVDF | Natural PVDF | Natural PVDF | 5 to 8 |
| P51530-H0 | Polypropylene | Hastelloy C | Black PVDF | 0.5 to 4 |
| P51530-S0 | Polypropylene | Natural PVDF | Black PVDF | 0.5 to 4 |
| Integral Sensor (use with 8512 Transmitter and integral mounting kit): | ||||
| 3-8510-P0 | Polypropylene | Titanium | Black PVDF | 0.5 to 4 |
| 3-8510-P1 | Polypropylene | Titanium | Black PVDF | 5 to 8 |
| 3-8510-V0 | Natural PVDF | Hastelloy C | Natural PVDF | 0.5 to 4 |
| 3-8510-T0 | Natural PVDF | Natural PVDF | Natural PVDF | 0.5 to 4 |
+GF+ SIGNET 319/515 Wet-Tap Flow
Sensor
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The +GF+ SIGNET 319/515 Wet-Tap Flow Sensor serves as a unique interface between the installation fitting and the extended 515 flow sensor. It provides a fast method of removing the extended 515 sensor from the pipe under specified operating pressures. The molded PVC design of the Wet-Tap makes it resistant to corrosion and chemical attack by acids, alkalies, salt solutions, and a number of other harsh chemicals.
| Output Signal: | 1V p-p per ft/s nominal |
| Output Frequency: | 6 Hz per ft/s nominal |
| Operating Range: | 1 to 20 ft/s |
| Pressure/Temperature: | 100 psi @ 68 degrees F |
| Power Requirements: | none |
| Pipe Size Range: | 0.5 to 36 in. |
| Repeatability: | +/-0.5% of full scale |
| Linearity: | 1% of full range |
| Materials: | Refer
to ordering info. for material options available. Valve: PVC O-rings: Viton® Cable type: twisted pair, foil shield with drain wire Cable length: 25 ft. (200 ft. max.) |
| Quality Standards: | CE, FM (Class I, II, III/Div. 1/Groups A-G) |
+GF+ SIGNET's 319/515 Rotor-X Wet-Tap Flow Sensor provides a quick way to remove the extended 515 from line without having to shut down flow.
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Part No. |
Assembly Material |
Housing Material |
Shaft
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Rotor
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Pipe Size (in.) |
| MK319/515-P3 | PVC | Polypropylene | Titanium | Black PVDF | 0.5 to 4 |
| MK319/515-P4 | PVC | Polypropylene | Titanium | Black PVDF | 5 to 8 |
| MK319/515-P5 | PVC | Polypropylene | Titanium | Black PVDF | 10 - up |
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+GF+ SIGNET 525 Metalex Flow Sensor-Starts at$435
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| Output Signal: | 80 mV p-p per fps nominal |
| Output Frequency: | 11 Hz per fps nominal |
| Operating Range: | 1.6 to 20 fps |
| Pressure/Temperature: | 1500 psi @ 300 degrees F |
| Power Requirements: | none |
| Pipe Size Range: | 0.5 to 12 in. |
| Repeatability: | +/- 0.5% of full range |
| Linearity: | 1% of full range |
| Materials: | Body:
ACI type CF-8M (316 SS) per ASTM A351 Shaft: Tungsten Carbide Retainer: 316 SS Rotor: CD4MCu Bearings: Fluoroloy "B" Cable Type: Twisted pair with foil shield Cable Length: 25 ft. (200 ft. max.) |
| Quality Standards: | CE, FM (Class I, II, III/Div. 1/Groups A-G) |

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Part No. |
Pipe Fitting Size |
Style |
Max. Temp. |
Max. Pressure |
| P525-1 | 0.5 to 1 in | mini-tap | 300 degrees F | 1500 psi |
| P525-2 | 1.25 to 12 in. | mini-tap | 300 degrees F | 1500 psi |
| P525-3 | 2 to 12 in. | saddle | 150 degrees F | 300 psi |
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+GF+ SIGNET 2540/2517 High
Performance Flow
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DescriptionThe +GF+ SIGNET 2540 offers the added strength and corrosion resistance of stainless steel for applications with low velocity measurements. Unique internal circuitry eliminates the need for magnets in the process fluid, enabling lower flow measurement while maintaining the advantages of insertion sensor design. The 2540's unique rotor/bearing design offers low flow measuring capability with increased reliability. For remote applications, the 2517 Brass High Performance Flow Sensor is available and will operate with the 5100 Battery Operated Flow Monitor.
Applications
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2540
| Output Signal: | Open collector, sinking |
| Output Frequency: | 15 Hz per ft/s |
| Operating Range: | 0.3 to 20 ft/s |
| Pressure/Temperature: | With
standard Viton® O-rings: 250 psi @ 180 degrees F With optional EPR O-rings: 250 psi @ 212 degrees F |
| Power Requirements: | 5 to 24 VDC |
| Pipe Size Range: | -1 and -2: 1.5 to 24 in., -3 and -4: 1.5 to 36 in. (consult distributor for applications above 24 in.) |
| Repeatability: | +/-0.5% of full range |
| Linearity: | +/-1% of full range |
| Materials: | Body:
316 SS Sensor fitting: 316 SS O-rings: Viton® (EPR optional) Rotor: CD4MCu Rotor bearings: PEEK Cable type: Twisted pair with foil shield Cable Length: 25 ft. (1000 ft. max.) |
| Quality Standards: | CE |
2517
| Output Signal: | 80 mV p-p per ft/s |
| Output Frequency: | 20 Hz per ft/s |
| Operating Range: | 1.6 to 20 ft/s |
| Pressure/Temperature: | 225 psi @ 212 degrees F max. |
| Materials: | Body:
C36000 free cutting brass Sensor fitting: C36000 free cutting brass O-rings: Viton® (EPR optional) Rotor: CD4MCu Rotor bearings: Fluoroloy B Rotor shaft: Tungsten Carbide Cable type: Twisted pair with foil shield Cable Length: 25 ft. (200 ft. max.) |

Dimensions
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Part No. |
Description |
| 3-2540-1 | High Performance Flow Sensor with 1.5 in. NPT thread |
| 3-2540-2 | High Performance Flow Sensor with 1.5 in. ISO thread |
| 3-2540-3 | Hot-Tap Flow Sensor with 1.5 in. NPT thread |
| 3-2540-4 | Hot-Tap Flow Sensor with 1.5 in. ISO thread |
| 3-2517.100 | Brass High Performance Flow Sensor with 1.5 in. NPT thread |
| 3-2517.101 | Brass High Performance Flow Sensor with 1.5 in. ISO thread |
| 3-2517.102 | Brass Hot-Tap Flow Sensor with 1.5 in. NPT thread |
| 3-2517.103 | Brass Hot-Tap Flow Sensor with 1.5 in. ISO thread |
Accessories |
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| 3-1500.663 | Hot-Tap Installation Tool |
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