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SE 554 pH Sensor Product Highlight

This low-maintenance sensor is constructed using Alpha pH glass, 2 open hole junctions & a solid polymer electrolyte with high KCl concentration.

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pH Sensor for Liquids with Suspended Solids

The SE 554 Memosens pH sensor is ideal for use in liquids with suspended solids and high ionic strength. This low-maintenance sensor is constructed using Alpha pH glass, 2 open hole junctions & a solid polymer electrolyte with high KCl concentration. These features provide stable performance and long life in the most difficult applications.

The integrated NTC 30K temperature element assures that all pH measurements are accurately compensated for the temperature of the process media.  The robust sensor design and construction, along with the integration of Memosens technology, provide for a significant reduction in the overall cost of ownership.

The SE 554 is suitable for use with any M4 Knick transmitter.

QUICK SPECS

Range: 0 … 14 pH
Temperature:  32 … 266°F (0 … 130°C)
Pressure:  0 … 145 psig (1 … 10 bar)
Sensor Material: Alpha pH glass
Diaphragm/Junction: 2X Open
Electrolyte: solid Polymer (KCl)
Reference Electrode: Ag/Ag Cl – Silamid®

TYPICAL APPLICATIONS

  • Media with fine suspended solids
  • Caustic addition
  • Wet gas scrubbers
  • Slurries
  • Waste water

SE 554 pH Sensor Anatomy

1 – SENSOR HEAD: Memosens Digital Sensing Technology

Memosens sensors provide several benefits with regard to ease of use and reduction of operating costs:

  • Submersible inductive connection removes measurement influence from moisture and humidity that are commonly present in process applications.
  • Galvanically isolated so there is no measurement influence from noise or ground loops. This is especially beneficial when using plastic holders.
  • Calibration and diagnostics can be performed in the shop or lab. This reduces field maintenance time and process downtime.
 SE 554 Anatomy

2 – ELECTROLYTE:

Solid polymer electrolyte with high KCl content.

  • Reduces measurement interference due to diffusion potentials and improves sensor response time.
  • Prolongs sensor life by slowing process ingress and fouling of reference electrode.

3 – REFERENCE ELECTRODE: Ag/Ag Cl – Silamid®

The Silamid reference electrode is constructed using a glass tube internally lined with silver and packed with silver chloride powder. A polyester fiber plug is added as an additional barrier to prevent poisoning and extend sensor life.

4 – DIAPHRAGM/JUNCTION: 2X Open Hole

The 2 open hole junctions help to minimize contamination and plugging of the reference system. This will extend the time between sensor calibration and replacement in suspended solids applications.

5 – SENSOR MATERIAL: Alpha pH glass

Alpha glass is medium-impedance, fluoride-resistant, hydrogen sensitive glass designed for use in applications requiring fast response time in media with extremely high ionic strength and/or strongly oxidizing media.

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SE 554 pH Sensor Product Highlight