Vital Signs Monitor Operator`s Manual

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Vital Signs Monitor Operator`s Manual | Manualzz

Calibration

Blood Pressure Calibration Check

The Welch Allyn Vital Signs Monitor is manufactured to the highest industry standards for quality and accuracy. The device is manufactured using calibrated pressure standards traceable to NIST

(National Institute of Standards and Technology). Welch Allyn recommends that blood pressure calibration for the Vital Signs Monitor is checked on an annual basis using the following procedure.

1. Put the Vital Signs Monitor into its blood pressure calibration check mode. In this mode, the device will continuously display the measured pressure and the pressure release valve is closed.

1.1

Initiate the Vital Signs Monitor’s internal configuration settings menu by pressing the

Power button while continuously depressing the START button. Continue to depress the START button until the unit software version information is displayed.

1.2 Press the REVIEW button repeatedly until “CAL” is shown in the systolic display. The current pressure will be shown in the diastolic and pulse rate displays.

1.3 Press the START button to close the Monitor’s internal valve so that an external pressure may be applied.

2. Connect the Vital Signs Monitor as shown.

Make sure the pressure meter used to test the Vital Signs

Monitor is calibrated and that the calibration certificate for the pressure meter is traceable to the

National Institute of Standards and

Technology. The pressure meter testing the Vital Signs Monitor must have an accuracy of better

than ±3 mmHg. Use a fixed volume or a cuff wrapped around a cylinder for the stabilization volume.

3. Pressurize the Vital Signs Monitor to slightly above 250 mmHg and bleed down the pressure no faster than 10

Calibration Check Set-up

Vital Signs Monitor

Stabilization

Volume

Calibrated

Pressure Meter

(traceable to NIST) mmHg per second, stopping to check

the pressure at 250, 150, and 50

mmHg. Record the readings of the device and the pressure measurement standard at each pressure.

4. Calculate the difference between the readings from the Vital Signs Monitor and the pressure measurement stan-

(150 - 500cc)

Pressure Source dard at each of the specified pressures. Subtract the rated accuracy of the pressure measurement standard from the ±3 mmHg rated accuracy of the Vital Signs Monitor. This is the

pass/

fail criteria to determine if the device is within calibration or not. If the differences between the

Vital Signs Monitor and the pressure measurement standard are within the pass/fail criteria at all specified pressures, then the device is within calibration.

50 Vital Signs Monitor

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