RKI Instruments Digester Gas Monitor - Manual (Page 64)

58 • Selecting the Detector Head Input Type and Gas Setup Digester Gas Monitor Operator’s Manual
scroll through the choices and then press and release the ENTER button to accept the
selection. The INPUT Type screen will appear. In the example below, channels 1 has
been selected for setup.
5. Use the UP/YES or DOWN/NO button to scroll through the choices of input types.
Table 9 below lists the choices of input type for the Digester Gas Monitor.
6. When the desired detector head input type is shown on the display, press and release
the ENTER button to accept it.
• If you select an input type other than oxygen direct, the PreDefined Gas Setup
screen will appear.
Table 9: Digester Gas Monitor Detector Input Types
Detector Head Input Type Description
4-20 mA TRANSMITTER A 4-20 mA TRANSMITTER detector head is connected
to the Digester Gas Monitor with 2 or 3 wires, depending
on the detector head model, using the AMP +, S, and -
terminals on the detector/transmitter terminal strips. All
calibration adjustments are made at the detector head.
PREAMP DIRECT A PREAMP DIRECT detector head is connected to the
Digester Gas Monitor with 2 wires using the AMP + and S
terminals on the detector/transmitter terminal strips. All
calibration adjustments are made at the Digester Gas
Monitor.
OXYGEN DIRECT (25%) An OXYGEN DIRECT detector head is an oxygen
detector head in which the oxygen detector is wired to the
Digester Gas Monitor with 2 wires using the OXY W
(white) and G (green) terminals from on the detector/
transmitter terminal strips. All calibration adjustments are
made at the Digester Gas Monitor.
RWGB DIRECT An RWGB DIRECT detector head is a detector head in
which the detector is wired to the Digester Gas Monitor
with 4 wires using the LEL R (red), W (white), G (green)
and B (black) terminals on the detector/transmitter
terminal strips. All calibration adjustments are made at
the Digester Gas Monitor. This type of detector head is
typically a combustible gas LEL detector head, but may
be another type such as a CO
2
detector.
CHANNEL(S): 1
INPUT Type
RWGB Direct
UP / DN then ENT / ESC
CHANNEL(S): 1
PreDefined Gas Setup
METHANE 100 %LEL
UP / DN then ENT / ESC