RKI Instruments Digester Gas Monitor - Manual (Page 53)

Digester Gas Monitor Operator’s Manual Overview • 47
Chapter 5: Global Menu
Overview
This chapter describes how to view and change Digester Gas Monitor instrument
parameters using the Global Menu. The global parameters are the cycle interval time
setting, the optional horn/strobe’s installation setting, the relay normal state setting, the
alarm buzzer silence setting, and the fail silence setting. The Global Menu is accessed
using the ESCAPE and UP/YES control switches.
The Global Menu includes a 5-minute timeout feature. If you do not press a control switch
for 5 minutes, the Digester Gas Monitor automatically returns to Standby Mode.
NOTE: If the Digester Gas Monitor returns to Standby Mode because of a timeout, it
enters a warm-up period just as it does when it is first turned on.
If you are installing a new Digester Gas Monitor, it has been set up at the factory.
Use the Global Menu only if you want to change the instrument parameter factory
settings.
Viewing and Changing Global Parameters
WARNING: The Digester Gas Monitor is not an active gas monitoring device while in the
Global Menu. When you enter the Global Menu, the 4-20 mA output signal will
“freeze” at 3.5 mA for each active channel, all relays and alarm LEDs will
remain in their current state at the time that you entered the Global Menu, and
the alarm buzzer and strobe will turn off if they were activated until you exit the
Global Menu. The 4 - 20 mA output signal will not indicate current readings and
the relays and alarm LEDs will not resume operating normally until the Digester
Gas Monitor is in normal operation again.
NOTE: You must set the instrument parameters to the desired settings using the Global
Menu before making any changes to the channel parameters in the Configuration
Menu. Settings in the Global Menu influence what channel parameters appear in
the Configuration Menu.
1. While in Standby Mode, press and hold the ESCAPE and UP/YES buttons for
approximately 5 seconds to enter the Global Menu. Release the buttons when the
You
Have Entered the GLOBAL Menu message appears.
You Have Entered The
GLOBAL Menu
Continue? [Y / N]