Rosemount 9900 Intelligent pH/ORP Sensor

The Rosemount 9900 Intelligent pH/ORP Sensor is Emerson's industry-leading liquid analytical measurement solution for Saudi Arabia's water treatment, chemical processing, and industrial wastewater applications. Featuring embedded HART communication directly from the sensor head, the 9900's digital signal transmission eliminates the ground loops and electrical noise that corrupt traditional analog pH signals in Saudi Arabia's large industrial facilities where long cable runs pass near high-power electrical equipment at SABIC and Saudi Aramco sites. The sensor's diagnostic data — electrode resistance, solution resistance, and asymmetry potential — transmit continuously with the pH measurement to NWC and SABIC control systems for predictive maintenance.

The 9900's automatic temperature compensation range of 0°C to 100°C addresses Saudi Arabia's challenging seasonal water temperature variations — from the warm 32°C Red Sea seawater in summer at SWCC's Jeddah desalination plants to the cool 15°C groundwater from northern Qassim aquifers in winter. The sensor's double junction reference design extends electrode life in Saudi Arabia's high-conductivity process streams, including the high-salinity produced water from Saudi Aramco's mature fields and the brackish groundwater treated by NWC's inland desalination plants. Ceramic and PTFE junction materials resist contamination from SABIC's amine and caustic process streams.

For Saudi Aramco's produced water treatment and water injection quality management, the 9900 measures the pH of injection water to prevent carbonate scaling in injection well formations and to optimize corrosion inhibitor pH ranges. SABIC's neutralization units require pH measurement with ±0.02 accuracy to ensure acidic and caustic waste streams are fully neutralized before discharge to Jubail industrial zone effluent treatment — the 9900 provides this accuracy with automatic calibration verification using Emerson's Rosemount 1056 analyzer. Saudi GAMEP inspection teams have accepted 9900-based systems for environmental monitoring at SABIC's wastewater treatment plants.

Razz Middle East maintains a complete 9900 electrode consumables stock program for Saudi utility and industrial customers, providing calibration buffer solutions, replacement sensor bulbs, and reference junction inserts matched to specific Saudi Arabia water chemistries. Our application engineers guide NWC and SABIC instrument teams in electrode selection for the challenging measurement conditions in Saudi Arabia's high-TDS and low-conductivity water streams.