5
4.3 Backlight ON/OFF
The LCD can be read in low-light areas by setting the front panel
LIGHT switch to ON. The backlight stays on until turned off, or until
the POWER switch is set to OFF.
4.4 Using the Strap
The instrument's elastic strap allows the unit to be either hand-held,
or hung on nearby objects.
By sliding your hand between the instrument and its elastic strap,
you can hold onto the Monoxor II with a minimum of effort. The
instrument's front panel slide switches can then be actuated by your
thumb for one-handed operation. Or, by releasing the metal clip at the
bottom of the instrument's case, you can hang the instrument by its
strap on nearby objects such as nails, sheet metal, or valve handles.
4.5 Using the Probe
A rigid stainless steel probe with handle is used to draw a gas sample
from the room, grilles, diffusers, and furnace fl ues through a line dryer
and fl exible hose into the instrument. A fl exible probe option (see
Section 6) is available to give easy access to hot-water heater fl ues
and inside furnace heat exchangers.
The probe tube is detachable from the handle when sampling with a
different probe is desired. See Figure 3.
Important! The line-dryer will remove moisture from the gas sample.
If the line-dryer becomes saturated, however, condensation may be
observed within the hose. If this occurs, stop sampling and replace
the line-dryer's fi lter-packing material.
4.6 Interpreting the Display
Gas Display
The LCD shows CO levels in the
range from 0 to 1999 ppm. The display on the right
indicates a CO level of 500 ppm.
