AP121

Brand: ABB Group

The AP121 is a highly process-resistant 12 mm combination pH / redox (ORP) electrode. 

It is equipped with a rugged solid electrolyte providing an effective shield to process poisons and fluctuating pressures. 

The electrode has all 3 measuring elements located closely together and a very fast temperature response. 

This ensures high integrity calibration and tighter control. 

Already a number of years in service, the proven multi-pole VP connector enables easy connection / disconnection of multi-parameter sensor signals.
Features
  • Exceptional resistance to poisoning and pressure
  • IP67 (NEMA 6P) ingress protection
  • High corrosion resistance and steam sterilizability
  • Assured high accuracy of calibration and operation
  • Rapid response enabling tighter process control
  • Unparalleled resistance to plugging
  • Extended life and improved performance

Specifications

Environmental Protection

  • IP67
  • NEMA 6P

Measuring Rang

  • AP121/0: 0 to 14 pH, 0° to 100° C (32° to 212° F)
  • AP121/2: 0 to 10 pH, -5° to 50° C (23° to 122° F)
  • AP121/1: 0 to 14 pH, 10° to 130° C (50° to 266° F)
  • AP121/6 Pt Redox (ORP): ± 2,000 mV, 0° to 130° C (32° to 266° F)

Electrolyte

  • Solid, Ag-free gel with KCl charge

Inner Reference System

  • Ag/AgCl

Junction Annular

  • PTFE, sterilizable

Conductivity

  • Minimum 50 µS/cm

Temperature Sensor

  • Integral Pt100 (pH only)

Electrode Shaft Length

  • 120 mm (4.72 in)

Maximum Pressure

  • 6 bar (90 psi)
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