Foxboro 871PH-3A1A pH Sensor

Foxboro 871PH-3A1A

pH/ORP Sensor (Rebuildable, High-Temp)

Specifications

• pH Range: 0–14 pH
• Temperature Range: -5°C to +121°C (250°F) continuous
• Electrode: Spherical glass, high-temperature DoplHin glass
• Body Material: Ryton (PPS), chemical-resistant
• Wetted Parts: Titanium (metallic components)
• Reference: Single-junction, ceramic, Ryton body
• Preamplifier: Integral, intelligent configuration
• Cable: 6 m (20 ft) integral, 2-wire with ATC
• ATC: Built-in Pt100 RTD, -5°C to +125°C
• Pressure Rating: Up to 10 bar (145 psi)
• Weight: ~1.5 lbs (0.68 kg)
• Certifications: CE, Ex ia IIC T4 (Zone 0)

Key Features

• Rebuildable Modular Design: Replace electrode, junction, or electrolyte without full sensor replacement.
• High-Temperature Stability: DoplHin glass withstands 121°C cycling, maintains accuracy.
• Integral Preamplifier: Reduces noise, enables long cable runs (up to 150m).
• Titanium Wetted Parts: Resists corrosion in harsh chemical environments.
• Single-Junction Reference: Ceramic junction for general process use.
• Easy Maintenance: Twist-lock fittings simplify installation & calibration.

Applications

• Water/wastewater treatment
• Chemical & petrochemical processing
• Pharmaceutical & biotech
• Food & beverage
• Pulp & paper industry