Veterinary monitor user’s manual
Chapter 5-40
with its windows in a vertical position and not in a horizontal position.
4. To prevent “rain-out” and moisture
，
from draining into the IRMA airway adapter, do
not place the airway adapter in a gravity dependent position.
5. Do not use the IRMA airway adapter with nebulized medications as this may affect
the light transmission of the airway adapter windows.
6. Never sterilize or immerse the IRMA sensor in liquid.
7. Do not apply tension to the sensor cable.
8. If error occurs in IRMA sensor, the indicate light will keep in red, and blink in red
means the sensor is check the airway adapter.
9. Use a piece of clean cloth and alcohol for IRMA CO
2
cleaning.
5.8.7 Maintenance and Cleaning
5.8.7.1 Zero reference calibration
Gas readings should be verified with a reference instrument at regular intervals.
A zero reference calibration of the IR measurement should be performed whenever an
offset in gas readings is discovered or if “GAS CONC. OUT OF RANGE” alarms appear
when measuring room air.
Zero Reference calibration is performed by snapping a new IRMA airway adapter onto
the IRMA sensor, without connecting the airway adapter to the patient circuit, and then
using the <host instrument> to transmit a calibration command to the IRMA sensor.
Special care should be taken to avoid breathing into the adapter during the zero
reference calibration procedure. The presence of ambient air (21% O
2
and 0% CO
2
) in the
IRMA airway adapter is of crucial importance for a successful zero reference calibration.
Always perform a pre-use check after performing zero reference calibration.
5.8.7.2 Cleaning
Cleaning
:
Use a piece of clean cloth moistened in water or mild soap solution to clean the sensor.
Disinfection:
Use a piece of clean cloth to wipe the surface of the sensor with a 70% ethanol or 70%
isopropyl alcohol.
Measuring window