Signet P525-1S Flow Sensors

Signet P525-XX Paddlewheel Flow Sensors

P525-XX Metalex Flow Sensor

Item#: 159000963 | Model#: P525-1S | Series#: P525-XX

Price: $66300

Availability: Ships within 2 to 3 weeks
$66300 /ea

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525 Metalex Flow Sensor

The Signet 525 Metalex™ Paddlewheel Flow Sensor combines stainless steel construction with insertion paddlewheel technology. The result is a highly reliable sensor resistant to extreme pressures and temperatures. The Tungsten Carbide shaft with carbon fiber-reinforced PTFE bearing provides excellent wear resistance for extended service.

A comprehensive fitting program allows installation in steel lines with the mini-lock for small diameters, and either the mini-tap for pipes up to DN300 (12 in.). The self-generating signal output allows use with the Signet 8150 battery-operated flow monitor.

Fields of Application:
  • Boiler Feedwater Monitoring
  • HVAC
  • Chemical Transport
  • Heat Exchangers
  • Reverse Osmosis
  • Cooling Systems
  • Not suitable for gases
  • For up to 103 bar (1500 psi @ safety factor 1.5) pressure
  • DN15 to DN300 (½ to 12 in.) pipe range
  • Simple installation
  • Self-powered/no external power required
  • 316 SS body
  • Tungsten Carbide or SS shaft
  • 7.6 m (25 ft) cable included
  • Operating range: 0.5 to 6 m (1.6 to 20 ft/s)
  • China RoHS
  • RoHS compliant
P525-1S Product Specific Data
Sensor Styleused with ½ to 1 inch socket-weld mini-tap fittings**
Rotor Pin Material316 Stainless Steel
Series Data
Operating Range0.5 to 6 m/s (1.6 to 20 ft/s)
Pipe Size RangeDN15 to DN300 (½ to 12 in.)
Linearity±1% of max. range @ 25 °C (77 °F)
Repeatability±0.5% of max. range @ 25 °C (77 °F)
Min. Reynolds Number Required4500
Sensor Body316 SS (ACI type CF-8M per ASTM A351), DIN 17440
Rotor MaterialCB7Cu-1 Alloy
Rotor PinTungsten Carbide GRP 1 or 316 stainless steel
Retainers (2)316 stainless steel (1.4401
Rotor Bearings (2)Carbon fiber reinforced PTFE
GasketKLINGER®sil C-4401 (supplied with fitting)
Frequency39 Hz per m/s nominal (12 Hz per ft/s nominal)
Amplitude5 to 8 mV p-p per Hz
Source Impedance11.6 KΩ
Cable Length7.6 m (25 ft), can be extended up to 61 m (200 ft)
Cable TypeCable (per foot) 2 cond. w/shield, 22 AWG
Socket Weld or Weld-On Mini-Tap Fittings103 bar (1500 psi @ safety factor 1.5) @ 149 °C (300 °F)
Strap-on Saddle Fitting21 bar (305 psi) @ 66 °C (151 °F)
Operating Temperature-18 °C to 149 °C (0 °F to 300 °F)
Product Dimensions
Weight1.47 lb
Width120.00 mm, 4.72 in
Height90.00 mm, 3.54 in
Length240.00 mm, 9.45 in
Document TitleDownload
DatasheetClick Here to Download
Model number codeClick Here to Download
Manual (English)Click Here to Download
Manual (French)Click Here to Download
Manual (German)Click Here to Download
Manual (Spanish)Click Here to Download
SpecificationsClick Here to Download
IDShort DetailsPrice 
5523-32222-conductor cable with shield, 22AWG, per foot$3.00
P51589Conduit adapter kit$67.00
P52503Replacement bearing, 525 sensor, carbon fiber reinforced PTFE$10.00
P52504-1Replacement rotor kit, 525 sensor, stainless steel$22.00
P52504-2Replacement rotor kit, 525 sensor, tungsten carbide$70.00
P52509Replacement rotor kit (rotor, stainless steel pin, bearings, retainers), 525 sensor$66.00
P52509-2Replacement rotor kit (rotor, tungsten carbide pin, bearings, retainers), 525 sensor$95.00
P52527Replacement retainers, 525 and 2540 sensor, stainless steel$10.00
P52618Replacement gasket, 525 sensor$10.00
P52628Fitting cap kit (cap and gasket)$99.00




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