PHD-99S Two-wire Intrinsically Safe pH/ORP Transmitter

Enhanced Explosion Protection:

• Optional ​Exdb IICT6Gb​ flameproof certification, allowing safe magnetic operation outside the housing in explosive environments.
• Optional ​Exia IICT6 Ga​ intrinsic safety certification, compatible with safety barriers for broader applications.

Superior Environmental Adaptability:

• IP66 protection rating​ with thickened cast aluminum housing for durability and weather resistance.
• Intrinsically safe circuit boards use ​high-insulation resin encapsulation​ for corrosion resistance and enhanced explosion protection.
• Temperature range: -20°C to 60°C, suitable for diverse environments.

Smart Design:

• Two-wire smart transmitter​ with ​HART 7.5 protocol​ for real-time status updates (official member of the HART Communication Foundation).
• ​Dual-button calibration​ and parameter configuration with multi-level menu tree for user-friendly operation.
• Automatic temperature compensation​ with manual selection of PT100/PT1000 sensors.
• Two-point calibration​ with automatic pH solution recognition.

High Precision:

• pH transmitter accuracy: ±0.03 (high input impedance design).