Subscribe to Our Youtube Channel
Related Manuals for Emerson Rosemount 226
Summary of Contents for Emerson Rosemount 226
- Page 1 Reference Manual 00809-0100-3226, Rev AA August 2018 ™ Rosemount Toroidal Conductivity Sensors...
- Page 3 Safety Information WARNING HIGH PRESSURE AND TEMPERATURE HAZARD Before removing the senosr, reduce the process pressure to 0 psig and cool down the process temperature. Failure to reduce the pressure and temperature may cause serious injury to personnel. CAUTION EQUIPMENT DAMAGE The wetted sensor materials may not be compatible with process composition and operating conditions.
-
Page 5: Table Of Contents
3.3 Calibrating against a Referee – In Process ..................19 3.4 Calibrating against a Referee - Grab Sample .................. 21 Chapter 4 Troubleshooting ......................23 4.1 Maintaining the sensor ........................23 4.2 Troubleshooting ........................... 23 Chapter 5 Accessories ......................... 27 Rosemount 226 Sensors... - Page 6 Contents Reference Manual August 2018 00809-0100-3226 Reference Manual...
-
Page 7: Description And Specifications
Description and specifications Overview The Rosemount 226 sensor is a toroidal (inductive) conductivity sensor. These sensors work well for measuring in highly conductive liquids up to 2 S/cm (2,000,000 μS/cm). Unlike metal electrode based conductivity sensors, toroidal conductivity sensors, like the Rosemount 226, are resistant to fouling, coating, and chemical attack. -
Page 8: Ordering Information
Reference Manual August 2018 00809-0100-3226 They can be used to return the sensor to the factory in case of damage. Ordering information Table 1-2: Rosemount 226 Toroidal Conductivity Sensor ordering information Model Sensor type Toroidal Conductivity Sensor Materials of Construction... -
Page 9: Chapter 2 Install
If the sensor must be installed in a horizontal pipe run, mount the sensor in the 3 o’clock or 9 o’clock position. Figure 2-1: Measured conductivity as a function of clearance between sensor and walls Rosemount 226 Sensors... - Page 10 August 2018 00809-0100-3226 Figure 2-2: Rosemount 226 with 1 in. MNPT process connection mounting adapter (-80 option) dimensional drawing Figure 2-3: Rosemount 226 with 7/8 in. 9 UNC thread and insertion through flange mounting adapter (-81 option) dimensional drawing Reference Manual...
- Page 11 CAUTION MOISTURE DAMAGE Sensor cables routed in conduit must be sealed or plugged with sealing compound. Failure to properly seal the conduit may allow accumulated moisture in the transmitter housing and damage the sensor and the transmitter. Rosemount 226 Sensors...
-
Page 12: Wiring The Sensor
Install Reference Manual August 2018 00809-0100-3226 Wiring the Sensor For additional wiring information on this product, including sensor combinations not shown here, please refer to the Transmitter Wiring Diagrams. Figure 2-4: Wire functions Reference Manual... - Page 13 Reference Manual Install 00809-0100-3226 August 2018 Figure 2-5: Wiring for Rosemount 226-54 and Rosemount 226-56 sensors to 1056 and 56 transmitters Rosemount 226 Sensors...
- Page 14 Install Reference Manual August 2018 00809-0100-3226 Figure 2-6: Wiring for Rosemount 226-54 and Rosemount 226-56 sensors to 1066 transmitter Figure 2-7: Wiring for Rosemount 226-54 and Rosemount 226-56 sensors to 5081-T transmitter Reference Manual...
- Page 15 Reference Manual Install 00809-0100-3226 August 2018 Figure 2-8: Wiring sensors through a remote junction box Rosemount 226 Sensors...
- Page 16 Install Reference Manual August 2018 00809-0100-3226 Reference Manual...
-
Page 17: Chapter 3 Calibration
Calibration Sensor Calibration The nominal cell constant of the Rosemount 226 sensor is 1.2/cm. The error in cell constant is about ± 10%, so conductivity readings made using the nominal cell constant will have an error of at least ± 10%. - Page 18 Calibration Reference Manual August 2018 00809-0100-3226 4. If wall effects are present, be sure the vessel used for calibration has exactly the same dimensions as the process piping. 5. Also, ensure that the orientation of the sensor with respect to the piping is exactly the same in the process and calibration vessels.
-
Page 19: Calibrating Against A Referee - In Process
If this is not possible, adjust the conductivity so that it is at least 5000 μS/cm. 2. Orient the referee sensor so that air bubbles always have an easy escape path and cannot get trapped. Rosemount 226 Sensors... - Page 20 Calibration Reference Manual August 2018 00809-0100-3226 Figure 3-3: Calibration with a referee instrument example 3. Tap and hold the flow cell in different positions to allow bubbles to escape. 4. Turn off automatic temperature compensation in the transmitter. This eliminates error in the cell constant. 5.
-
Page 21: Calibrating Against A Referee - Grab Sample
3. Keep temperature compensation with the transmitter turned on. 4. Confirm that the temperature measurements in both the process and referee instruments are accurate, ideally to within ±0.5 °C. 5. Wait until readings are stable before starting the calibration. Rosemount 226 Sensors... - Page 22 Calibration Reference Manual August 2018 00809-0100-3226 Reference Manual...
-
Page 23: Chapter 4 Troubleshooting
Cell constant is wrong. Wall effects are Calibrate the sensor in place in the present. process piping. See Sensor Calibration. Wrong temperature correction Check that the temperature correction algorithm is being used. is appropriate for the sample. See transmitter manual for more information. Rosemount 226 Sensors... - Page 24 Troubleshooting Reference Manual August 2018 00809-0100-3226 Table 4-1: Troubleshooting (continued) Problem Probable cause Solution Temperature reading is inaccurate. Disconnect the RTD leads (Figure 4-1 and measure the resistance between the in and common leads. Resistance should be close to the value in Table 4-2.
- Page 25 Reference Manual Troubleshooting 00809-0100-3226 August 2018 Figure 4-1: Sensor resistance check Rosemount 226 Sensors...
- Page 26 Troubleshooting Reference Manual August 2018 00809-0100-3226 Reference Manual...
-
Page 27: Chapter 5 Accessories
Submersion mounting adapter, 1 in. MNPT, 3 in. length, PEEK (spare for -80 option sensors) 33185-02 Flange insertion mounting adapter, 1 in. length, PEEK (spare for -81 option sensors) 33219-00 7/8 in. 9 UNC X 1 in. MNPT for conduit connection (spare for -81 option sensors) Rosemount 226 Sensors... - Page 28 © 2016 Rosemount. All rights reserved. Linkedin.com/company/Emerson-Automation-Solutions The Emerson logo is a trademark and service mark of Emerson Electric Co. Rosemount is a twitter.com/rosemount_news mark of one of the Emerson Process Management family of companies. All other marks Facebook.com/Rosemount are the property of their respective owners.
Need help?
Do you have a question about the Rosemount 226 and is the answer not in the manual?
Questions and answers