Product Manual

Directions for Use Maintenance and Service 67
Calibration
Blood Pressure Calibration Check
The calibration check is a simple, yet valuable test to determine that the unit is sensing
pressure accurately. Verify the pressure measurement accuracy of the Welch Allyn Spot
LXi with an accurate, calibrated pressure meter or sphygmomanometer.
To perform the calibration check:
Have the following equipment available:
1. Disconnect the blood pressure cuff from the blood pressure tubing.
2. Attach two pieces of the 4” tubing to the T-connector. Verify that the tubing is
positioned perpendicular to each other.
3. Attach the pressure meter or sphygmomanometer to one of the tubes and the bulb
and value assembly to the second tube.
4. Push a female fitting into the third piece of 4” tubing and connect the opposite end of
the tubing to the T-connector.
5. Twist the blood pressure tubing fitting that connects to the right blood pressure cable
connection port to the female fitting and connect the opposite end of the blood
pressure tubing to the blood pressure cable connection port. Verify that all
connections are tight.
Figure 11. Blood Pressure Calibration Tubing Connections
6. Enter the Internal Configuration Mode (see “Internal Configuration” on page 31).
• Accurate, calibrated pressure meter or
sphygmomanometer
• 4” tubing with an inside diameter of
approximately .250” (quantity 3 each)
• T-connector • Bulb and valve (5088-01)
• Female fittings (12P524-1) (quantity 2 each)
Right female
fitting
Accurate, calibrated
pressure meter or
sphygmomanometer
T-connector
Bulb and valve
4” tubing
Right blood
pressure cable
connection