Xylem YSI ProDSS, Руководство пользователя

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Calibration
ProDSS sensors (except temperature) require periodic calibration to maintain accurate measurements. Calibration
procedures follow the same basic steps with variations for specific parameters.
Before Calibration
• Enter GLP user-defined data if applicable to user requirements (User ID, Probe ID, User Field #1/2) ( GLP Options
on page 17 ).
• Set up sensor options, settings, and coefficients as applicable ( Sensor menu beginning on page 22 ).
NOTICE: Install a gray port plug in all exposed ports. Exposure to water can cause damage or corrosion to the
bulkhead connectors not covered by the warranty.
Calibration Setup (pH, ORP, ISE, Conductivity, Turbidity, and Total Algae Sensors)
NOTE: Make sure the calibration cup, sensor guard, and all sensors are clean.
NOTE:
If using the calibration cup, make sure to install the sensor guard before placing the sensors into the
calibration cup.
NOTE: The sensor guard and calibration cup should be used when calibrating turbidity, DO, and total algae
sensors. All other calibrations can be performed in other laboratory glassware.
1. Install a clean, dry sensor ( Figure 4 on page 9 ) and sensor guard ( Figure 6 on page 11 ) onto the bulkhead.
NOTICE: Install a gray port plug in any exposed port on 4 port ProDSS cable assemblies. All sensor ports must
have either a sensor or port plug installed.
2. Fill the calibration cup with a moderate amount of water and tighten the calibration cup onto the bulkhead. Use
the water to rinse the cup and the sensor to be calibrated. Discard the rinse.
3. Thoroughly rinse the calibration cup with a small amount of the calibration standard for the sensor to be
calibrated. Discard the standard.
4. For 4 port cable assemblies , refill the calibration cup with fresh calibration standard to approximately the first
line for pH, ORP, turbidity, PC, PE, and chlorophyll calibrations. Fill to the second line for conductivity calibration
(
Figure 43 on page 34 ). If using the ODO/CT cable assembly and calibrating conductivity, ensure the vent holes
at the top of the sensor are completely immersed and the solution level is at least 1/2 inch higher than these
top vent holes (
Figure 46 on page 36 ). A cylinder is included with ODO/CT cable assemblies for the purpose of
calibrating conductivity.
NOTE: Volumes will vary. Make sure the temperature sensor and the sensor to be calibrated are submerged in
calibration solution, except when performing a DO% saturation calibration.
NOTE: Be careful to avoid cross-contamination with other standards.
NOTE: These rinsing recommendations are only suggested guidelines for highest data accuracy. Make sure to
follow your organization Standard Operating Procedures (SOPs) for instrument calibration and operation.
5. Immerse the sensor(s) in the standard and tighten the calibration cup onto the bulkhead.
6. Calibrate the sensor(s).
Alternately, pH, ORP, and conductivity calibrations can be completed in a beaker or other container using the same
basic procedure described above. Make sure that the temperature sensor and the sensor to be calibrated are
completely submerged. When submerging the conductivity sensor, make sure that the calibration solution covers the
vent holes on the conductivity sensor.