Foxboro 875PH pH, ORP, ISE Transmitter

875PH Line-Powered Analyzer

The Foxboro 875PH is a line-powered, microprocessor-based smart analyzer engineered for accurate pH, ORP (oxidation-reduction potential), or ISE (Ion Selective Electrode) measurements. It is compatible with a broad range of analog process sensors such as Foxboro’s PH10, ORP10, 871PH, or EP460 series. Featuring dual analog outputs, relay outputs, and optional HART communication, the unit delivers flexible, field-configurable control for critical analytical applications.

Ideal for:

• Chemical
• Water/ Wastewater
• Process Control
• Food and Beverage
• Pharmaceuticals
• Safety-critical systems

Features:

• Measures pH, ORP, ISE
• Compatible with analog sensors
• Automatic temperature compensation
• Dual 4-20 mA outputs
• Optional HART 5 communication
• 2 programmable relay outputs
• Backlit LCD display
• Auto buffer recognition
• Monitors sensor diagnostics
• NEMA 4X / IP65 rated
• Dust, moisture, washdown resistant
• AC-powered
• UL, CSA certified

Document Downloads

• 875PH-Data Sheet
• 875PH-Instructions