Calibration; Calibration Setup - YSI ProDIGITAL User Manual

3. Calibration

ProDIGITAL sensors (except temperature) require periodic calibration. Calibration procedures follow the same basic
steps with variations for specific parameters. Before calibration, adjust Calibration Record settings under the System
menu if applicable to user requirements. Set up sensor options, settings, and coefficients as applicable.
3.1

Calibration Setup

Make sure the calibration cup, sensor guard, and all sensors are clean. YSI recommends installing the sensor guard
before placing the sensors into the calibration cup.
For highest data accuracy, thoroughly rinse the calibration cup and sensors with a small amount of the calibration
standard for the sensor to be calibrated. Discard the rinse standard, and proceed with a fresh standard.
Be careful to avoid cross-contamination with other standards between calibrations by thoroughly rinsing with DI water
and drying the calibration cup and sensors.
Ensure the calibration cup gasket is correctly seated. Loosely install the retaining nut on the cup. Slide the calibration
cup over the sensors and sensor guard and tighten the retaining nut
Calibration Cup Installation for 4-Port Cable Assemblies
4
3
2
1
Figure 45 Calibration cup standard volume (4-port cable)
30
(Figure
5
45).
1 Fill line one (for all calibration
solutions except for conductivity)
2 Fill line two (for conductivity
calibration solution)
3 Gasket
4 Retaining nut
5 Calibration cup installed
It takes 170 mL of solution to fill the
calibration cup to line 1, while it takes
225 mL to fill to line 2.
Calibration