Walchem WEL pH and ORP Electrodes

The WEL Series are modular in design with a rugged CPVC housing that contains the electronics. pH and ORP cartridges can easily be connected or replaced in minutes without tools. The cartridges feature a unique threaded interlock connection and a double o-ring seal, ensuring a watertight fit and secure seating at all times.

The optional differential preamplifier or 4 to 20 mA transmitter, and temperature compensation element are in the housing, and are not thrown away when the electrode needs replacement. The electrode is powered by the controller it is connected to, so the signal is always preamplified and there are no batteries to go dead.

A titanium solution ground rod integral to the housing enables the differential measuring technique. This results in prolonged electrode life and reliable measurement, resistance to stray voltages and currents or ground loop problems.

Key Benefits

• Differential preamp
• Universal mounting, easy to install
• Easily replaceable electrode cartridges
• Electronics are not discarded with the electrode
• Optional ATC
• Cartridge Styles:
  • Flat Surface
  • Bulb / Rod
  • HF Resistant
  • Low Ionic Strength pH cartridge
• Resistant to electronic noise, ground loops
• CE Performance & Safety Certifications

Specifications

Wetted Materials of Construction

• Cartridge and Housing: CPVC
• Cartridge Reference Junction: HDPE
• O-Rings: FKM
• Housing Ground Rod: Titanium
• Cartridge Electrode: Glass (pH) or Platinum (ORP)
• Inline nut, tee and adapters: Glass Filled Reinforced Polypropylene

Downloads

WEL Instruction Manual

pH/ORP Sensor Brochure