Rosemount 3900 pH Sensor
LONG SENSOR LIFE
The Rosemount 3900 and 3900VP sensors provide you with extended sensor life by using crack-resistant glass and a double junction reference to protect against poisoning ions like chlorine, cyanides, sulfides, or ammonia. The sensors also have a built-in solution ground to provide advanced sensor diagnostics.
HIGH ACCURACY AND DEPENDABILITY
As a result, highly-durable Rosemount pH/ORP sensors can provide accurate measurements of pH and oxidation reduction potential in many aqueous solutions. These sensors are typically installed on open or closed tanks, pipelines, or holding ponds. The Rosemount 3900 pH sensor is provided with an integral cable connection, while the Rosemount 3900VP is equipped with a Variopol (VP8) connector. The Variopol connector enables the cable to be removed from the sensor for sensor service or replacement without removing the cable wire connections from the analyzer.
Constructed of a robust, chemical-resistant polyphenylene sulfide Ryton® plastic body, and using a Pt-100 resistance temperature device (RTD) for temperature compensation, these combination sensors offer a temperature range of 158 degrees F to 14 degrees F for liquids with low freezing points, making them equipped for reliable performance in harsh manufacturing or processing environments. Common applications for Rosemount 3900/3900P sensors include water treatment plants, beverage production facilities, water quality control in manufacturing, and more. KECO Controls recently installed Rosemount 3900 pH sensors in a commercial laundry wastewater monitoring system, to help monitor the pH of their wastewater before sending it off to a treatment facility.
SMART SENSOR TECHNOLOGY
A SMART preamplifier option enables automatic recognition of the pH sensors by Rosemount 56, 1056, 1066, and 1057 transmitters. The pH calibration data is stored in this sensor, letting you calibrate before installation. This versatility allows for true “plug and play” sensor installations in the field. Amazingly the standard 3900 pH sensor can also measure pH in demineralized water without a flowing reference when used in a Rosemount low-flow cell panel.
TUpH MODEL 396 SENSORS
Companies with more difficult application requirements may opt for the heavy-duty Rosemount 396 pH/ORP sensors when dealing with dirty, abrasive, coating, and high solid applications. These sensors are also highly configurable for several installation requirements. Please see the Rosemount 396 pH/ORP sensor product data sheet for more details on these sensors.
Keco Engineered Controls is a trusted distributor of Emerson Rosemount process control instrumentation. Keco provides a wide selection of products from Rosemount Measurement and the Rosemount Analytical Liquid and Gas Divisions. These products are used in operations like electric and steam power plants, chemical processing plants, food and beverage production, oil and gas terminals, hospital boiler operations, and pharmaceutical production plants. Please see the Rosemount 3900 Manual for product specifications. For more information on installation and use, call or email us at 732-901-5900; sales@kecocontrols.com
LEARN MORE ABOUT THE ROSEMOUNT 3900 pH SENSOR:
Learn more about the Rosemount 3900 pH Sensor here.
Rosemount 3900/3900VP Sensor FAQ
1. What is the Rosemount 3900/3900VP sensor designed for?
The Rosemount 3900/3900VP sensor is designed for reliable and accurate pH and ORP (oxidation-reduction potential) measurements in a wide range of industrial processes. It is ideal for monitoring chemical concentrations, water quality, and other critical parameters when coupled with an appropriate transmitter.
2. Can the Rosemount 3900/3900VP sensor be used in extreme temperatures?
Yes, the sensor is built to withstand harsh process conditions, including extreme temperatures from 14 to 212 °F (-10 to 100 °C). It features robust construction and durable materials to maintain performance and accuracy in demanding environments.
3. Can the Rosemount 3900/3900VP sensor be integrated with existing control systems?
Absolutely. The sensor is compatible with a variety of Rosemount transmitters and can be easily integrated into most standard control and monitoring systems for real-time data acquisition and process control.
4. What safety features are built into the Rosemount 3900/3900VP sensor?
The sensor includes advanced diagnostic capabilities, high chemical resistance, and rugged design to ensure safe and continuous operation. The VP (Variopol) version also allows quick sensor replacement without disconnecting wiring at the transmitter terminals, reducing exposure to hazardous substances.
5. Is the Rosemount 3900/3900VP sensor available for hazardous environments?
Yes, select 3900/3900VP sensor models are certified for use in hazardous areas, offering added safety and compliance in explosive or chemically aggressive environments.
6. What industries use the Rosemount 3900/3900VP sensor?
This sensor is widely used in industries such as water and wastewater treatment, chemical processing, food and beverage, power generation, and pharmaceuticals—anywhere accurate pH and ORP monitoring is essential.