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Model 551 pH/ORP Sensor

Brand: Barben Analytical

The 551 Quick Change Sensor offers a unique method to extract the sensor through a "Nut Lock" Adapter system.

The Nut Lock Adapter threads directly into 1" NPT process connections. Sensor length options up to 12" allows the sensor to fit through flanges and stand-off piping. 

The 551 sensor also includes a 3/4" rear connection for use in submersible applications.
Features
  • Patented design increases sensor life, accuracy and reliability
  • High resistance to poison - Reduced calibration offset error
  • Large surface area reference junction eliminates plugging issues
  • Eliminates error due to fluctuating pressure
  • No exotic gel or polymer electrolyte which may be incompatible with the process

Specifications

Cable Length

  • 1 to 30 feet (0.3 to 9 metres)

Electrical Connectors

  • 8” Pigtail Connector
  • Junction Box
  • TOP68 Quick Disconnect Cable Plug Head

Enclosure, Body Material

  • PEEK
  • PVDF Kynar

Length

  • Insertion Depth from Rib to Front of Body: 2.625 to 10”

Materials of Construction

  • ORP: Platinum
  • pH: Glass

Measuring Range

  • -1,500 to 1,500 mV, 0° to 130° C (32° to 266° F)
  • pH: 0 to 14, 15° to 130° C (59° to 266° F)
  • pH: 1 to 14, 15° to 130° C (59° to 266° F)
  • pH: 2 to 11, -20° to 50° C (-4° to 122° F)
  • pH: 3 to 8, -20° to 80° C (-4° to 176° F)

NPT Connection

  • 3/4” NPT Male
  • Nut-Lock Adapter: 1” NPT Male

O-Ring Material

  • EPDM
  • FFKM
  • Viton

Pressure Rating

  • Plastic Body with Metal Hex Nut - psig: 25 (kPa: 172.4, bar: 1.724) at 130° C (266° F)
  • Threaded Metal Body with Metal Hex Nut - psig: 300 (kPa: 2,068, bar: 20.68) at 80° C (176° F)
  • Threaded Plastic or Metal Body with Hand Nut [at 70° C (158° F)], Plastic Body with Metal Hex Nut [at 25° C (73° F)] - psig: 150 (kPa: 1,034, bar: 10.34)
  • Threaded Plastic or Metal Body with Hand Nut, Threaded Metal Body with Metal Hex Nut - psig: 40 (kPa: 275.8, bar: 2.76) at 130° C (266° F)

Sensor, Probe Material

  • Sensor: Kynar
  • Sensor: PEEK

Sensor, Probe Type

  • RTD (Pt100, Pt1000 3-Wire), (Balco 3.01 kiloohms, Honeywell 8,550 ohms 2-Wire)
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