Conductivity Measurement in Chemical Separators
Easy, reliable measurement of critical process parameter
Accurate Conductivity Measurement Even When Sensor is Coated
A conductivity sensor is used to detect whether the water phase or the organic phase is present at the measurement point in chemical processing separators. When the level of the water reaches the sensor, the controller opens a valve to discharge the water phase. Solids can build up in the water phase, coating the sensor and providing inaccurate or unresponsive measurements. The Rosemount™ 228 Toroidal Conductivity Sensor is an ideal choice for most separator applications because its electrodeless design provides an accurate and reliable measurement even as the sensor becomes coated by oils or suspended solids in the process.
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Product Solutions
The Rosemount 228 Toroidal Conductivity Sensor reliably measures conductivity in highly conductive electrolyte solutions up to 2 S/cm (2,000,000 µS/cm). These conductivity sensors work in dirty and corrosive applications where metal electrode sensors would otherwise fail. A robust sensor design makes the Rosemount 228 conductivity sensor ideal for measuring concentrations of acid, base and salt solutions.
- Meet challenging application requirements with a selection of chemical resistant body options including PEEK and Tefzel
- High vibration tolerance with reinforced internal metal frame design
- High temperature option for process temperatures up to 200 °C (392 °F) and suitable for use under high pressure up to 295 psig (2135 kPa [abs])
Process Connection
-20: 5/8 in. -11 UNC, -21: 3/4 in. MNPT
Valve Type
Recommended Valve: 1-1/2 in. full port ball valve
Materials of Construction
Wetted Materials:
Body Materials either glass-filled PEEK, glass-filled Tefzel™ or unfilled Tefzel; Option -20: EPDM gasket
Body Materials either glass-filled PEEK, glass-filled Tefzel™ or unfilled Tefzel; Option -20: EPDM gasket
The Rosemount 226 Toroidal Conductivity Sensor measures conductivity in highly conductive liquids up to 2 S/cm (2,000,000 μS/cm). This toroidal/inductive sensor has a robust fouling-resistant design which makes it ideal for measuring conductivity in harsh, corrosive and fibrous liquid applications.
- Toroidal sensor is resistant to plugging and suitable for liquids containing high levels of suspended solids due to large bore design
- Plugging resistant and suitable for liquids containing high levels of suspended solids due to large bore design
- High vibration tolerance with reinforced internal metal frame design
Temperature Range
32°F - 248°F (0°C - 120°C)
Maximum Pressure
295 psig (2135 kPa [abs])
Materials of Construction
Wetted Materials: Glass-filled PEEK, EPDM Gasket
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
