800-446-7488
28
www.in-situ.com
Conductivity Calibration
The conductivity sensor is calibrated with NIST-traceable standards at the factory, which provides a high degree of linearity
across the entire operating range of 5 to 100,000 µS/cm. This sensor is capable of meeting its published specifications
without requiring additional calibration by the user. Most commercially available standards can introduce a larger potential
measurement error than the sensor’s initial factory calibration.
User calibration is recommended only if you must conform to a standard operating procedure or if the conductivity cell has
undergone physical change (e.g., deposits on conductivity cell walls that cannot be removed or physical damage to the
conductivity cell walls).
1. Fill the calibration cup to the fill line with approximately 130 mL of the desired calibration solution.
2. Place the instrument in the solution taking care to not force the solution out the top of the calibration cup.
3. In Win-Situ 5 Software, select the
Conductivity
sensor.
4. Click the
Calibrate
button in the left corner of the screen.
5. Select either 20° C or 25° C as the reference temperature, as indicated by the reference calibration solution.
