Hollis Explorer User Manual - page 107
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LCV Port: the port on the exhale counterlung that houses the exhale counterlung mushroom
valve. This port links to the LCV via a balance tube.
Life Support System (LSS) Module: the diver’s left hand electro/mechanical assembly.
Loop Control Valve (LCV): the valve in the canister that controls the amount of exhaust gas
exiting the rebreather and controls the breathing loop pressure.
LP: low pressure
Maximum operating depth (MOD): the maximum depth a given gas can be used safely.
Mushroom valve: a flexible one-way flapper valve that permits the gas to flow in a
circular path through a rebreather.
Negative Pressure Check: a test placing the Breathing Loop under a vacuum condition to
check for leaks.
O
2
: oxygen
OC: open circuit
Optocon: The wireless transmission system used in Explorer to send data between the
LSS and Sensor Module.
Oxygen Sensor: galvanic oxygen sensors
OPV (Over-Pressure Valve): a mechanical valve that vents gas to prevent breathing loop-
component rupture.
PCO
2
: Partial pressure of carbon dioxide
PO
2
(PPO
2
): partial pressure of oxygen
Positive Pressure Check: a test that looks for leaks in the Breathing Loop when pressurized.
QD: quick disconnect
Quad Ring: a specially designed sealing ring that creates a positive seal on
the CO
2
canister.
Sensor Module: Electro/mechanical assembly where the oxygen sensors, CO
2
sensor
and Thermal Profile Monitor are housed.
Setpoint: The PO
2
setting used to determine when a solenoid valve injects gas into the
breathing loop.
TPM (Thermal Profile Monitor): The device that monitors the thermal front of the reac-
tion zone inside the absorbent scrubber.
The Right Hand End Cap: End cap that when removed gives access to the CO
2
Scrub-
ber Pack.
WOB (Work Of Breathing): The effort required to complete an inspiration/expiration breathing
cycle.
8.
2