RKI Instruments Digester Gas Monitor - Manual (Page 29)

Digester Gas Monitor Operator’s Manual Wiring the Digester Gas Monitor • 23
4. Prepare the selected mounting site as required to mount the Digester Gas Monitor. It
should be mounted at eye level (4 1/2 to 5 feet from the floor). Refer to Figure 11 for
the outline and mounting dimensions.
5. Position the monitor on the vertical mounting surface. Use a level to ensure that the
Digester Gas Monitor housing is level in all planes. The flowmeters will not operate
properly if the Digester Gas Monitor is not mounted as shown below and level in all
planes.
6. Insert 1/2 in. screws through the slots in the mounting feet at each corner of the
housing to secure the housing to the mounting surface.
Figure 11: Digester Gas Monitor Outline and Mounting Dimensions
Wiring the Digester Gas Monitor
This section describes procedures to connect the AC power source, DC power source,
Modbus wiring (refer to “Wiring the Digester Gas Monitor in a Modbus System” on
page 68), external alarms, and recording devices. See Figure 12 on page 24 for a general
diagram of all external wiring to the Digester Gas Monitor.
WARNING: Make all connections to the Digester Gas Monitor before you plug in or turn on
the AC or DC power source. Before you make any wiring adjustments, always
verify that all power sources are not live.
Ø .56, 4X
12.35
NOTE: User-Installed C ompressed Air Filter/
Water Trap N ot Shown in This View
34.72
23.75
25.59
25 .59
27.85
26.89
Horn/Stro be (Optional)