User's Manual

16
Warm Up and Cal Purge time delays are also available to prevent unwanted alarm trips. Figure
5-8 shows the menu for these items.
Figure 5-8: Clock & Calendar / Delay Timer Menu
5.7 LCD Contrast Adj:
LCD Contrast Adj. may be set for optimum viewing using the menu shown in Figure 5-9.
Figure 5-9: LCD Contrast Adjust Menu
5.8 HELP Screen:
The HELP screen contains several pages of information describing how to operate the ECO-A-X.
This is the bottom menu on page 1 of the SETUP screen.
5.9 Diagnostics:
IMPORTANT: Gas monitoring and alarm processing are not performed while using the
Diagnostics menus. Access requires a special key sequence of four consecutive UP
keystrokes.
The Diagnostic menu is useful for driving outputs without exposing the sensor to the target gas.
The OUTPUT SIMULATION menu allows setting the 4-20mA output to virtually any desired
value. This is useful for checking responses of devices receiving the ECO-A-X’s 4-20mA output.
See figure 5-10.
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