Page 3-2 LTV
®
1200/1150 Ventilator Service Manual p/n 18603-001, Rev. C
Display Real-time Data
FDn xx.xx
c
m
H
2
0
Flow differential pressure as measured at the patient wye using
the narrow scale transducer. Differential pressure is measured
between the high and low side proximal sense lines. The
narrow scale transducer is only used for differential pressures
between -0.35 cmH
2
O and 0.35 cmH
2
O (approximately -15
Lpm to 15 Lpm).
FTw xx.xx Lpm
or
FTn xx.xx Lpm
Flow in Lpm calculated from the differential pressure measured
at the patient wye. When the value is calculated using the wide
scale differential pressure, FTw is displayed. When the value is
calculated using the narrow scale differential pressure, FTn is
displayed.
When Leak Compensation is on, FTw xx.xx and FTn xx.xx
Lpm values are offset by the value of LEAK xx.xx Lpm.
Transducer count display is not available for this item.
FTb x.xx Lpm
Flow in Lpm calculated from the differential pressure measured
at the patient wye using the bi-directional transducer.
Transducer count display is not available for this item.
LEAK xx.xx Lpm
Leak flow calculated from the differential pressure transducer,
measured at the patient wye during exhalation.
FVd xx.xx
c
m
H
2
0
Differential pressure as measured across the flow valve.
FV xx.xx Lpm
Flow valve flow in Lpm calculated from the differential pressure
measured across the flow valve.
Transducer count display is not available for this item.
FVt xxx.x °F
Flow valve temperature.
STEP xxxx
Commanded flow valve motor step position.
Transducer count display is not available for this item.
TS xxxx rpm
Monitored turbine speed in rpms.
O2 xx.xx PSIG
Oxygen inlet pressure in PSIG as measured at the inlet
pressure transducer (LTV
®
1200 only).
BV xx.xx VOLTS
Internal battery voltage.
EV xx.xx VOLTS
External power voltage.
PPP xx.xx
c
m
H
2
O Pressure in the PEEP accumulator (PEEP Pilot Pressure)
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