pH Measurement in Continuous Neutralization of Industrial Wastewater
pH Sensor for Compliance Monitoring
pH Sensor Resists Coating for Accurate pH Measurement
To manage industrial waste streams that eventually enter lakes, oceans and municipal sewer systems, environmental authorities require pH neutralization. Direct discharge without pH neutralization is harmful to the environment and causes corrosion of piping systems. Continuous neutralization of acidic or alkaline industrial waste streams is employed when there's a high volume of waste with short residence times. In continuous neutralization, the industrial waste stream enters a stirred tank reactor, and acid or base is constantly added to the tank to maintain a target pH level. Treated waste then exits the reactor. Because industrial waste streams contain undissolved materials that can coat the pH glass and reference junction, a pH sensor that resists coating is ideal for installation in the stirred tank reactor. The Rosemount™ 396P pH/ORP Sensor features a large-area reference junction design as well as a shrouded tip that resists coating.
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Product Solutions
The Rosemount 396P pH Sensor/ORP Sensor, with integral cable, is specifically designed for improved life in harsh, dirty, and abrasive applications such as lime slurry waste treatment, paper machine headbox and pigment/dye applications, where large quantities of suspended solids are present. The pH/ORP sensor features a coating resistant TUpH large area reference junction and a rugged polypropylene body construction for maximum chemical resistance.
- Minimum pH/ORP sensor maintenance due to TUpH reference technology which ensures steady pH signal when sensor is coated
- Maximum pH/ORP sensor life due to helical reference pathway which hinders reference poisoning and cracking resistant glass
- SMART enabled for pH measurements
Measurement Range
pH sensor: 0 to 14ORP sensor: -1500 to 1500 mV
Operating Pressure
Hemi-bulb: 0 to 150 psig (0 to 10.34 barg)Flat-bulb: 0 to 100 psig (0 to 6.89 barg)
Operating Temperature
32 - 212 °F (0 -100 °C)
The Rosemount 56 Dual Channel Transmitter is a line powered device that can accept inputs from pH/ORP sensors, ion selective electrode (ISE) sensors, flow, current, conductivity (contacting and toroidal) sensors, turbidity sensors, dissolved oxygen sensors, chlorine sensors and ozone sensors.
- Retrieve calibration and measurement information by accessing the data logger via USB
- Design efficient processes by utilizing the built-in PID controller
- At a glance view of pertinent information provided by the large customizable display
Certifications/Approvals
FM: Class I, Division 2, Groups A, B, C, & D • Class Il & lll, Division 2, Groups E, F,&G • T4
Weight
Rounded up to nearest lb or nearest 0.5 kg: 3 lbs/4 lbs (1.5 kg/2.0 kg)
Measurement Range
pH sensor: 0 to 14 pH
ORP Sensor: -1500 to +1500 mV
ORP Sensor: -1500 to +1500 mV
