Oldham OLCT 200, User Manual, Page: 49 / 80

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OLCT 200 User Manual | 49
Figure 5-9: 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-
10.
Figure 5-10: LCD Contrast Adjust Menu
5.8 HELP Screen
The HELP screen contains several pages of information describing how to operate the
OLCT 200. 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 .
There are two
Diagnostics menus 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 OLCT 200
’s 4-20mA output. The
ACTIVATE RELAYS menu allows
tripping of alarm relays (if equipped) without tripping alarm set-points with the target
gas. This is useful for testing alarms events such as lights and audible devices.
C L OC K / D E L A Y S E T U P
T i me 12 : 3 5 : 4 2
D a t e 0 4 / 2 2 / 0 4
Wa r m U p S e c 12 0
C a l P u r g e S e c 10 0
C ON T R A S T
U P / D OWN t o c h a n g e
N E X T t o E X I T