YSI 3200 - Manual (Page 21)

System Configuration and Operation Section 3
3. Measure a linear temperature compensation factor.
4. Measure a non-linear temperature compensation curve.
The previous section, 3.2 Cell Calibration, describes the first two options. The following section,
Temp, describes how options 3 and 4 are used.
TEMP
From the Cell menu, press the [TEMP] soft key to enter the Cell Temp menu. This menu is used
to calculate the linear or non-linear temperature compensation coefficient of a particular solution
and store it in the currently selected configuration. Although the cell used is recorded, the
temperature compensation information can be used with any cell. Non-linear temperature
compensation [N.L. Temp] records multiple points over a temperature range and stores the
overall curve. Linear temperature compensation [L. Temp] measures a solution at only two points
and calculates a linear temperature coefficient in %/°C. Alternatively, you may input a linear
temperature compensation factor (0 - 10%/°C). See 3.2 Cell Calibration, Configure.
[5] # Configuration number CELL TEMP
[CONFIG 5] Title
0.0000uS offset
[Single] Cell Cal [1.00] K
[Linear] Comp [1.50] %/°C Comp val
[0.68] T.D.S. mult [25.0] °C Comp Temp
L. TEMP N. L. TEMP SEND
Linear Temperature Compensation
From the Cell Temp menu, press the [L. TEMP] soft key to enter the Lin Temp menu. This menu
enables the user to calculate the linear temperature compensation coefficient of a solution by
measuring it at two temperature points.
NOTE : If you already know the linear temperature compensation coefficient of the solution, you
may enter it directly in the Configure menu. See 3.2 Cell Calibration, Configure.
Stored points
[25.00] °C p1 LIN TEMP
[0.00] uS p1 22.61 °C
[25.00] °C p2 895.1 uS
[0.00] uS p2
[0.00] %/°C calculated
ENTER TO STORE
POINT 1 POINT 2
Current
Calculated temperature
coefficient
To calculate and store the linear temperature compensation coefficient:
1. Verify that the current configuration contains the correct cell constant for the current cell.
2. Clean the container and YSI 3200 Series cell (or YSI 3400 Series and temperature probe)
with deionized water.
3. Rinse the cell (and temperature probe, if used) with some of the solution to be analyzed.
YSI Incorporated Model 3200 17