Sub MkIIP Oxygen & Carbon Dioxide Monitor
User Manual - US Navy Version
Document Ref
: AS2-802-14 -
January 2016
Page 5
3
Operation
The external appearance of the SUB MkIIP is shown in Figure 1.
Figure 1 - External View of Instrument
Operation of the SUB MkIIP is simple, the only controls are the power switch and a single
pushbutton switch. To switch the unit on, turn the power switch to either the 'Battery' or
'External' position. Either an external supply or batteries must be installed in order for the
unit to operate.
If the unit does not turn on, perform the following checks:
a)
check that either the external power supply or batteries are healthy
b)
check that the fuses in the external supply line or the battery circuit are not blown
On powering up the instrument, the sensor readings may take a short time to settle,
particularly the CO
2
sensor, which can take about 40 seconds to ‘warm up’. During this
period, the CO
2
display shows “----“ to hide any erroneous measurements.
Sensor readings are updated approximately every two seconds.
The choices of measurement units for each parameter are defined at the time of order and
are factory set.
Oxygen readings are displayed in %SEV (percent surface equivalent).
CO
2
readings are displayed in %SEV (percent surface equivalent).
SUB Mk II
P
BACKLIGHT SWITCH
OXYGEN SENSOR
SUPPLY
SWITCH
CARBON DIOXIDE
SENSOR
BATTERY
CONDITION
ELAPSED
TIME
MAINTAIN
PRESSED
TO
RESET ELAPSED TIME
BACKLIGHT
DD:H
H
EXT
POWER
OFF
ESTIMATED
HOURS
BATT
CARBON
DIOXIDE
TEMPERATUR
E
DEPTH
FSW
OXYGEN
%SEV
°F
%SEV
