CTPH -Powering Up the Recorder

POWERING UP THE RECORDER

Turning on the Recorder
Open the control panel door by gently gripping the recessed area at the right side of the door and slowly pulling down.
Turn the recorder on by moving the power switch located on the control panel to the ô|ö position. Refer to Figure 3-1 for the location of the switch.

Figure 3-1. Power Switch

You then hear 1 beep and the LCD display shows the following:

Figure 3-2. First LCD Display
The displays in Section 3.2 come up quickly once you turn on the recorder. Be prepared to write down the codes as you see them on the recorder display. You can then compare the codes your recorder displayed with the probe label as described below. After the two groups of codes are displayed, the recorder continues with its sequence, and the pens move. More details are provided in Sections 3.3 and 3.4.

Recording the Code Numbers
A two-character temperature code made up of numbers and/or letters 0, 1, 2, 3, ... , 8, 9, a, b, and c appears. An example is shown in Figure 3-3; the numbers will vary:

Figure 3-3. Temperature Code

Write your code here
A C

Then, a single-character pH code, a number or letter 0, 1, 2, 3, ... , 8, 9, a, b, or c, appears. An example is shown in Figure 3-4; the numbers will vary:

Figure 3-3. pH Code

Write your code here
6

Final Display Mode
After the pH and temperature codes appear, the LCD displays the current fluid temperature in ░C or the fluid pH, depending on the position of the display selection switch (refer to Figure 3-8).

Initially, the pH recorder pen moves to the right a short distance and then moves to the left to the zero position. The temperature pen follows. Then, both pens, one at a time, move to the positions which correspond to the current temperature and pH.

At this point, the recorder is ready to use.

Figure 3-8. Display Selector Switch

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