Accutorr Plus Service Manual - Mindray

If patient movement presents a problem:
Verify that the sensor is properly and securely applied.
Use a new sensor with fresh adhesive backing.
Move the sensor to a less active site.
Use a type of sensor that tolerates some patient motion, such as the OXISENSOR
D-25, D-20, N-25, or I20 oxygen transducer.
NELLCOR® SENSOR FAMILY
SELECTION D25/D25L R-15 N-25 I-20 D-20 RS-10
GUIDE Adult Adult Neonatal Infant Pediatric Adult
Patient >30 kg >50 kg 40 kg
Size
>40 kg
Duration Short or Long Short or Short or Short or Short or Short Term
of Use Term Long Term Long Term Long Term Long Term
Sterility Sterile1 Sterile1 Sterile1 Sterile1 Sterile1 Nonsterile
Patient Limited Inactive Limited Limited Limited Limited
Activity Activity
Activity Activity Activity Activity
OXISENSOR OXISENSOR OXISENSOR OXISENSOR OXISENSOR RS-10
adult digit adult nasal neonatal infant digit pediatric reflectance
oxygen oxygen oxygen oxygen digit oxygen oxygen
transducer transducer transducer transducer transducer transducer
1 In an unopened, undamaged package.
All NELLCOR ® accessories and sensors must be purchased form NELLCOR ® Inc.,
25495 Whitehall Street, Hayward, Ca. 94545. To contact NELLCOR ® , call
1-800-NELLCOR.
D. Automatic Calibration of NELLCOR ® Sensors
The oximetry subsystem incorporates automatic calibration mechanisms. It is
automatically calibrated each time it is turned on, at periodic intervals thereafter, and
whenever a new sensor is connected. Also, the intensity of the sensor’s LEDs is
adjusted automatically to compensate for differences in tissue thickness.
Each sensor is calibrated when manufactured; the effective mean wavelength of the red
LED is determined and encoded into a calibration resistor in the sensor plug. The
instrument’s software reads this calibration resistor to determine the appropriate
calibration coefficients for the measurements obtained by that sensor.
Accutorr Plus Service Manual Revised 02/15/00
1-39
Chapter 1, Operation