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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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Table of contents
- 7 About the Operator’s Manual
- 7 Product Overview
- 7 Indications/Contraindications for Use
- 8 Safety Warnings & Cautions
- 9 General Warnings
- 9 Blood Pressure Warnings
- 10 SpO2 Warnings
- 10 Temperature Warnings
- 11 General Cautions
- 11 Blood Pressure Cautions
- 11 SpO2 Cautions
- 11 Temperature Cautions
- 12 Special Features
- 12 Blood Pressure Operating Modes
- 12 Blood Pressure Manual Mode
- 13 Blood Pressure Automatic Mode
- 13 Temperature Operating Modes
- 14 Temperature Normal Mode
- 14 Temperature Monitor Mode
- 14 SpO2 Operating Mode
- 15 SpO2 Monitor Mode
- 16 Pulse Rate Feature
- 17 Unpacking Checklist
- 17 Printer Option
- 17 Pulse Oximetry (SpO2) Option
- 18 Temperature Option
- 18 Controls, Indicators and Connections
- 18 Front Panel Functions
- 21 Side & Rear Panel Connections
- 22 Set-Up Procedure
- 22 AC Power Connection
- 23 Charging the Battery
- 23 Power On/Off and System Check Procedure
- 23 To turn the unit on, press the POWER button.
- 23 To turn the unit off, press POWER button.
- 23 Setting the Date and Time
- 23 1. Initiate the Monitor's internal configuration settings menu by powering up the unit while the ...
- 23 2. Press the review button four (4) times to advance to the Date Set Screen. The year, month and ...
- 23 3. Use the SELECT ALARM button to select the date item to be changed. When selected, the date ite...
- 23 4. Use the SET buttons (arrow up or arrow down) to change the selected date item.
- 23 5. After making all the desired date changes, press the REVIEW button to save the changes and adv...
- 23 6. When in the Time Set Screen the hour (in 24 hour format) and minutes will appear in the systol...
- 23 7. When the time is set as desired, press the REVIEW button to save the time and advance to the n...
- 23 8. Press the POWER button to turn the Monitor off.
- 24 Choosing Operating Modes
- 24 Blood Pressure Hose & Cuff Connections
- 24 1. Inspect the blood pressure hose and note that one end has a connector fitting and the other en...
- 25 2. Join the other end of the blood pressure hose to the pneumatic tubing which is attached to the...
- 25 Temperature Probe Connection
- 26 SpO2 Sensor Connection
- 26 Setting up the Printer
- 26 1. Grasp the printer cover as shown, and slide the cover off of the Monitor by sliding the cover ...
- 27 2. Holding a new roll of paper as shown, feed approximately 1 inch of paper into the slot at the ...
- 27 3. Press the paper "FEED" button to advance the paper 3 to 4 inches above the top paper slot.
- 27 4. Thread the paper through the paper slot on the printer cover. Slide the cover on to the Monito...
- 28 Setting the Programmable Alarms
- 28 Blood Pressure - High Systolic Limit
- 29 Blood Pressure - Low Systolic Limit
- 29 Blood Pressure - High Diastolic Limit
- 29 Blood Pressure - Low Diastolic Limit
- 30 Pulse Rate - High Limit
- 30 Pulse Rate - Low Limit
- 30 SpO2 - Low Limit
- 31 Temperature Measurement Range Indicators
- 31 Alarm Indications and Interpretation
- 31 During Blood Pressure Measurement
- 31 During SpO2 Measurement
- 31 During SpO2 Measurement
- 32 Measuring Blood Pressure
- 32 Setting the DEFAULT Inflation Pressure Preset Level
- 32 Blood Pressure Cuff Selection Criteria
- 33 Positioning the Blood Pressure Cuff
- 34 Manual Mode Blood Pressure
- 34 1. Ensure that the blood pressure cuff is properly sized and wrapped around the patient's upper a...
- 34 2. With the Monitor powered up, press the START button. The Monitor will inflate the cuff to the ...
- 34 3. The systolic display will show the pressure in the cuff as the blood pressure determination is...
- 34 4. When the measurement cycle is complete an audible tone will sound and the systolic, diastolic ...
- 34 5. The reading will be displayed for two minutes, and then this display will be blanked. The read...
- 34 6. Pressing CANCEL at any time during a blood pressure determination will cause the determination...
- 34 Automatic Mode Blood Pressure
- 34 1. Ensure that the blood pressure cuff is properly sized and wrapped around the patient's upper a...
- 35 2. Press the AUTO button and note two dashes "--" in the CYCLE display. This is the default setti...
- 35 3. Select one of the ten pre-programmed cycle interval times by pressing the AUTO button until th...
- 35 4. When the desired interval is displayed, the operator may select the interval by pressing any o...
- 35 5. The unit will take its first automatic blood pressure determination 10 seconds after the time ...
- 35 6. For the first automatic blood pressure determination, the Monitor will inflate the cuff to the...
- 35 7. The systolic display will show the pressure in the cuff as the blood pressure determination is...
- 35 8. When the measurement cycle is complete an audible tone will sound and the systolic, diastolic ...
- 35 9. The measurement will be displayed until the next measurement cycle is initiated.
- 35 10. Pressing CANCEL at any time during a blood pressure determination will cause the determinatio...
- 35 11. To end an AUTO blood pressure session, press the AUTO button until two dashes "--" appear in ...
- 35 Reviewing Information From Prior Cycles
- 36 “Erase data” function
- 36 Measuring Temperature
- 36 Selecting the Temperature Scale
- 37 1. While the Monitor is turned off, press both the POWER and START buttons simultaneously. Hold t...
- 37 2. The operator can now cycle through the Monitor's internal configuration menu by pressing the R...
- 37 3. The first option illuminated on the TEMPERATURE display is "˚F." Pressing the ADJUST button tw...
- 37 Selecting Temperature Operation Mode
- 37 1. While the Monitor is turned off, press both the POWER and START buttons simultaneously. Hold t...
- 37 2. The operator can now cycle through the Monitor's internal configuration menu by pressing the R...
- 37 3. Press the ADJUST button once to choose Monitor mode (˚F), or three times to choose Monitor mod...
- 38 Taking An Oral Temperature
- 38 1. Ensure that the oral probe is connected to the unit. The oral probe has a BLUE tip. Accurate o...
- 38 2. Remove the probe from the probe holder. A short self-test mode will be initiated where every L...
- 38 3. Load a probe cover onto the probe by holding the probe collar with the thumb and forefinger, b...
- 38 4. Insert the probe tip gently into the patient's slightly opened mouth. Carefully slide the prob...
- 39 5. The probe should be held by the clinician during the entire temperature measurement process to...
- 39 6. During the temperature measurement cycle the TEMPERATURE display will show a series of LED seg...
- 39 7. When the final temperature has been reached a tone will sound and the temperature will be disp...
- 39 8. After the temperature measurement is complete, remove the probe from the patient's mouth and e...
- 39 9. Insert the probe into the probe holder before attempting to take another temperature measurement.
- 39 10. The current temperature is displayed for one minute after the probe is replaced in the holder...
- 39 Taking an Axillary Temperature
- 40 1. Ensure that the oral probe is connected to the Monitor. The oral probe has a BLUE tip. Accurat...
- 40 2. Remove the probe from the probe holder. A short self-test mode will be initiated where every L...
- 40 3. Press the SET-Arrow Up button once. The display will now show “ALY” indicating that the Monito...
- 40 4. With the TEMPERATURE display showing “ALY”, load a probe cover onto the probe by holding the p...
- 40 5. Lift the patient’s arm so that the entire axilla is easily visualized. Place the probe as high...
- 40 6. Be sure that the probe tip will be completely surrounded by axillary tissue. Clothing or other...
- 40 7. Place the arm snugly at the patient’s side. Hold the arm in this position without movement of ...
- 40 8. In Normal Mode the Monitor will produce an audible tone and display the temperature reading wh...
- 40 9. After the temperature measurement is complete, remove the probe from the patient’s axilla and ...
- 40 10. Insert the probe into the probe holder before attempting to take another temperature measurem...
- 40 Taking a Rectal Temperature
- 40 1. Ensure that the rectal probe is connected to the unit. The rectal probe has a RED tip. Accurat...
- 41 2. Remove the probe from the probe holder. A short self-test mode will be initiated where every L...
- 41 3. Load a probe cover onto the probe by holding the probe collar with the thumb and forefinger, b...
- 41 4. Separate the buttocks with one hand. Apply a thin coat of water-based lubricant when necessary...
- 41 5. Tilt the probe to ensure good tissue contact and continue to keep the buttocks separated while...
- 41 6. During the temperature measurement cycle, the TEMPERATURE display will show a series of LED se...
- 41 7. When the final temperature has been reached, a tone will sound and the temperature will be dis...
- 41 8. After the temperature measurement is complete, remove the probe from the patient's rectum and ...
- 41 9. Insert the probe into the probe holder before attempting to take another temperature measurement.
- 41 10. The current temperature is displayed for one minute after the probe is replaced in the holder...
- 42 Measuring SpO2
- 42 SpO2 Operation Mode
- 42 Taking an SpO2 Measurement
- 42 1. Properly attach the appropriate sensor to the patient. Verify the cable to the sensor is attac...
- 42 2. The pulse signal bar graph will illuminate, indicating the relative strength and quality of th...
- 43 3. The SpO2% and pulse rate are updated approximately every second.
- 43 4. Removing the SpO2 sensor from the patient ends the monitoring period and immediately blanks th...
- 44 Using the SpO2 Pulse Tone
- 44 Printer Operation
- 45 Printing Options: batch print or streaming print mode
- 46 Using the RS232 Computer Interface
- 46 “Nurse Call” Interface
- 47 Mean Arterial Pressure (MAP)/Data Send Mode/Data Stream Mode
- 48 Troubleshooting
- 48 Error Indications and Interpretation
- 50 General Guide to Problems and Corrective Actions
- 53 Quick Guide to Taking a Manual (Auscultatory) Blood Pressure
- 54 Maintenance
- 54 Cleaning
- 54 Storage
- 54 Battery Removal & Replacement
- 54 1. Ensure that the AC power transformer cord is disconnected from the Monitor, and that the Monit...
- 54 2. Use a Phillips-head screwdriver to remove the four (4) screws holding in the battery door. Rem...
- 54 3. Tip the Monitor and slide the battery out. Disconnect each of the 2 connectors and discard the...
- 55 4. Attach the battery connectors to the new battery as shown below.
- 55 5. Slide the new battery into the battery compartment as far as it will go.
- 55 6. Replace the battery door, tightening each of the (4) screws.
- 55 7. Connect the AC power transformer to the monitor and allow the new battery to charge for approx...
- 55 8. The battery is a non-spillable lead-acid battery. In the USA, call 1-800-SAV-LEAD for instruct...
- 56 Calibration
- 56 Blood Pressure Calibration Check
- 56 1. Put the Vital Signs Monitor into its blood pressure calibration check mode. In this mode, the ...
- 56 2. Connect the Vital Signs Monitor as shown. Make sure the pressure meter used to test the Vital ...
- 56 3. Pressurize the Vital Signs Monitor to slightly above 250 mmHg and bleed down the pressure no f...
- 56 4. Calculate the difference between the readings from the Vital Signs Monitor and the pressure me...
- 57 Temperature Calibration Check
- 57 1. Turn the Monitor on by pressing the POWER button.
- 57 2. Remove the temperature probe completely from the holder and detach the connector, then insert ...
- 57 3. Insert, then remove the probe from the probe holder to reset the thermometer.
- 57 4. Wait for the temperture display test to be complete. Observe and record the temperture noted o...
- 57 5. The recorded temperature should be 97.3˚F ± 0.2˚F (36.3˚C +/- 0.1˚ C) if the Monitor is proper...
- 58 SpO2 Calibration Check
- 59 Warranty Information
- 59 Return the Instrument Registration Card
- 59 Service Information
- 59 Service Policy
- 59 Technical Assistance
- 60 Welch Allyn Service Centers