YSI ProDSS Calibration Worksheet | W87 Guide

YSI ProDSS Calibration Worksheet | W87 Guide
ProDSS
Calibration Worksheet
When the Environment Demands It
This calibration worksheet can help document your calibration and track the performance
of your sensors. Please follow the detailed calibration procedures in the ProDSS manual or
your facility’s standard operating procedure (SOP) to ensure all calibrations are as accurate
and as consistent as possible.
Refer to the YSI Solution Expiration Dates document to ensure your calibration solutions are
fresh. In addition to using fresh standards, never accept an out-of-range or questionable
calibration results.
Calibration Date
Technician: Handheld Serial Number:
Handheld Software Version:
Cable Serial Number:
Temperature
Reading when sensor is dry and in room temp air:
Accurate?
Y
N
Conductivity
Acceptable value is less than 1 µS/cm
Reading when sensor is dry and in room temp air:
Actual Reading in solution before calibration is accepted:
Reading in calibration solution after calibration is completed:
Conductivity Cell Constant in GLP* record after calibration:
Acceptable range for ProDSS conductivity/temperature sensors (626902) is 4.5 to 6.5
Acceptable range for integral (i.e. built-in) sensors on ODO/CT assemblies is 4.4 to 6.4
Optical Dissolved Oxygen
Barometric pressure:
Actual Reading before DO% calibration is accepted:
Reading in DO% calibration environment after calibration is completed:
ODO gain in GLP record after calibration:
Acceptable range is 0.75 to 1.50
pH
Actual Readings during calibration
Buffer Calibration Value
pH
pH mV**
Acceptable pH mV in buffer
7
-50 mV to 50 mV
4
+165 to +180 from
pH 7 buffer mV value
10
-165 to -180 from
pH 7 buffer mV value
pH slope in GLP record after calibration:
Acceptable range is ~ 55 to 60 pH/mV
(Ideal is 59.16 mV/pH)
*GLP stands for Good Laboratory Practice file. This calibration record contains important information about the calibration result.
**The pH mV at the time of calibration (Sensor Value) can also be seen in the final pH GLP record.
ProDSS
Calibration Worksheet
When the Environment Demands It
ORP
Actual Reading in solution before calibration is accepted:
Reading in calibration solution after calibration is completed:
Acceptable range is -100 to 50
ORP Cal Offset in GLP record after calibration:
Turbidity
Calibration
value (FNU)*
Actual Reading
during calibration
0
Acceptable range for Actual Reading during
calibration of the first point is -10 to 10 FNU
*Note: The turbidity sensor can be calibrated to 3 points.
Either 12.4 or 124 FNU standard can be used for the second
point, but not both. Other calibration values can be used
when calibrating.
12.4*
124*
1010
Depth (Completed in Air)
Actual Reading before calibration is accepted:
Reading in air after calibration is completed:
Ammonium
Actual Readings during calibration
Concentration**
(i.e. Calibration Value)
mg/L
mV***
Acceptable mV when the sensor is new
1st point: 1 mg/L
-20 mV to 20 mV
2nd point: 100 mg/L
+90 to +130 from mV value in 1 mg/L standard
Nitrate
Actual Readings during calibration
Concentration**
(i.e. Calibration Value)
mg/L
mV***
Acceptable mV when the sensor is new
1st point: 1 mg/L
180 mV to 220 mV
2nd point: 100 mg/L
-90 to -130 from mV value in 1 mg/L standard
Chloride
Actual Readings during calibration
Concentration**
(i.e. Calibration Value)
mg/L
mV***
Acceptable mV when the sensor is new
1st point: 10 mg/L
205 mV to 245 mV
2nd point: 1,000 mg/L
-80 to -130 from mV value in 10 mg/L standard
**Other standard concentrations can be used. A 2 point calibration without chilling a third calibration solution is extremely accurate and is the
preferred method. However, if there is a large temperature variation during sampling, a chilled third calibration point is recommended.
***The mV at the time of calibration (Sensor Value) for each point can also be seen in the GLP record after a calibration is complete.
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800.897.4151 (US)
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Printed in the USA. W87 0117
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