ε-20

Using a Custom Probe

To recall the specifications of a Vernier sensor and configure custom probe settings

1.Perform the first two steps of the procedure under “To configure a custom probe setup” on page ε-19.

2.Press 5(VERNIR).

This displays a Vernier sensor list.

3.Use the f and c keys to move the highlighting to the Vernier sensor whose setting you want to use as the basis of the custom probe settings, and then press w.

The name and specifications of the Vernier sensor you select will appear on the custom probe setup screen.

To complete this procedure, perform steps 4 through 7 under “To configure a custom probe setup” (page ε-19).

kAuto Calibrating a Custom Probe

Auto calibration automatically corrects the slope and intercept values of a custom probe setup based on two actual samples.

Important!

Before performing the procedure below, you should prepare two conditions whose measurement values are known.

When inputting reference value in step 5 of the procedure below, input the exact known measurement value of the condition you will sample in step 4. When inputting reference value in step 7 of the procedure below, input the exact known measurement value of the condition you will sample in step 6.

To auto calibrate a custom probe

1.Connect the calculator and EA-200, and connect the custom probe you want to auto calibrate to CH1 of the EA-200.

2.What you should do first depends on whether you are configuring a new custom probe for calibration, or editing the configuration of an existing custom probe.

If you are configuring a new custom probe:

Perform steps 1 through 6 of the procedure under “To configure a custom probe setup” on page ε-19.

Auto calibrate will automatically set the slope and intercept, so you do not need to specify them in step 6 of the above procedure.

If you are editing the configuration of an existing custom probe:

(1)On the Custom Probe List, use the f and c cursor keys to highlight the name of the custom probe you want to edit, and then press 3(EDIT).

(2)Perform the procedure starting from step 6 under “To configure a custom probe setup” on page ε-19.

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