Specifications

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MODEL 30 pH/DO SECTION 4.0
DISPLAY AND OPERATION
SECTION 4.0
DISPLAY AND OPERATION
4.1 DISPLAY
4.2 KEYPAD
4.3 PROGRAMMING AND CALIBRATING THE MODEL 30 - TUTORIAL
4.4 SECURITY
4.5 USING HOLD
4.1. DISPLAY
The Model 30 has a two-line display.
The display can be customized to meet
user requirements (see Section 5.11).
Figure 4-1 shows some of the displays
available during normal operation. View
A is the default screen for dual sensors.
View C is the default screen for a single
sensor.
The Model 30 has information
screens that supplement the data in the
main display. Press " or ' to view the
information screens. The last informa-
tion screen is the software version.
During calibration and programming, key
presses cause different displays to
appear. The displays are self-explanato-
ry and guide the user step-by-step
through the procedure.
4.2 KEYPAD
Figure 4-2 shows the Model 30 keypad.
FIGURE 4-1. Displays During Normal Operation
Screen A shows dissolved oxygen and pH. The temperature shown is the
temperature measured by the oxygen sensor. Screen B shows dissolved
oxygen and pH and the temperature measured by each sensor. Screen C
shows the data for the oxygen sensor only.
FIGURE 4-2. Model 30 Keypad
Four arrow keys move the cursor around the screen. A blinking word or
numeral show the position of the cursor. The arrow keys are also used to
change the value of a numeral. Pressing ENTER stores numbers and set-
tings and moves the display to the next screen. Pressing EXIT returns to
the previous screen without storing changes. Pressing MENU always
causes the main menu screen to appear. Pressing MENU followed by EXIT
causes the main display to appear.