Welch Allyn 9020 User manual

Thermometry

Service Manual

The CE mark on this product indicates it has been tested to and conforms with the provisions noted within the 93/42/EEC Medical Device Directive.

European Regulatory Manager, Medical Division Welch Allyn Ltd., Navan, Co. Meath Republic of Ireland

FOR TECHNICAL SUPPORT AND CUSTOMER SERVICE

Welch Allyn, Inc. 7420 Carroll Road San Diego, CA 92121-2334 (619) 621-6600 (800) 854-2904

U.S. Patents 265,525; 4,863,211; 4,911,559; 4,993,424, 4,993,438; and 5,018,872; Australia 108527 and 108528; Belgium 19809 and 19694; Canada 2,001,196-3; 66391 and 66392; Denmark MR 0272 1991 and MR 0273 1991; Norwegian 68692 and 68.370; Sweden 48,348; 48, 347; Switzerland 117,864 and 117,865; Taiwan R.O.C. New Invention Pat. No. ND-25315; ND 25316; and 42337; United Kingdom 2001897 and 2001898; West Germany M 89 07 483.1 and M 89 07 556.0; Additional U.S. and Foreign Patents Issued and Pending.

CONTENTS

INTRODUCTION.................................................................................... 1

Infrared Thermometry..................................................................... 1

Key Benefits ................................................................................... 1

FEATURES ............................................................................................ 2

WALL MOUNT (OPTION)...................................................................... 3

Removing the 9020 from the Wall Mount ....................................... 3

CONTROLS ........................................................................................... 4

DISPLAY INDICATORS......................................................................... 6

OPERATION MODES ............................................................................ 8

PROBE COVERS ................................................................................ 10

OPERATING PROCEDURES .............................................................. 11

Taking Temperatures in Oral, Core, Rectal Modes ...................... 11

Proper Technique ......................................................................... 14

Taking Temperatures in Surface Mode ........................................ 14

Changing Operation Modes.......................................................... 15

Self Test ....................................................................................... 15

MAINTENANCE ................................................................................... 16

Changing the Probe Cover Dispenser .......................................... 16

Cleaning the Probe Sensor Lens .................................................. 17

Method 1: Removing Light Dust........................................... 17

Method 2: Removing Smudges or Excessive Debris ........... 18

Cleaning the Thermometer ........................................................... 19

Changing the Probe Tip................................................................ 20

Replacing the Batteries................................................................. 21

Welch Allyn 9020 Infrared Tympanic Thermometer

THEFT PROTECTION ......................................................................... 22

OPTIONS & ACCESSORIES .............................................................. 22

TROUBLESHOOTING......................................................................... 23

ERROR CODES .................................................................................. 27

SECURITY CABLE INSTALLATION (OPTION) .................................. 28

WALL MOUNT INSTALLATION (OPTION) ......................................... 29

SPECIFICATIONS ............................................................................... 30

LIMITED WARRANTY ......................................................................... 31

9020 Users’ Manual

INTRODUCTION

The Welch Allyn™ Model 9020 tympanic thermometer incorporates infrared optics with advanced microelectronics to quickly and efficiently register tympanic membrane-derived temperatures.

INFRARED THERMOMETRY

All matter emits thermally-generated electromagnetic waves. As the temperature of an object increases, it increased radiates infrared energy (heat rays) at amplitudes and wavelengths corresponding to its temperature.

The infrared sensing system of the 9020, co-developed with NASA’s Jet Propulsion Laboratory, employs state-of-the art technology to measure infrared radiation within the ear canal. The thermometer calculates the patient’s temperature from the highest level of infrared energy detected.

Clinical studies indicate that the temperature of the tympanic membrane correlates well with core body temperature.

KEY BENEFITS

The ergonomically-designed 9020 offers the most noninvasive approach to determine body temperature.

Tympanic site measurements enhance patient comfort and avoid contact with mucous membranes, substantially minimizing the risk of cross-contamination.

In addition, tympanic temperatures are not affected by patient-specific variables such as respiration, eating, drinking, and smoking.

The 9020 is ideal for intubated patients and others who cannot have their temperatures taken orally.

NOTE: This manual provides important instructions. Be sure to read the “Operating Procedures” section carefully. We recommend that you practice taking a temperature to familiarize yourself with the 9020 and develop the proper technique to ensure safe, quick, and accurate temperatures.

Welch Allyn 9020 Infrared Tympanic Thermometer

FEATURES

• Approximately 1-second scan

time to register body temperature

• Patented, fully-enclosed

probe cover dispenser holds 100 disposable probe covers

• Automated placement of probe

covers to maintain cleanliness

• Retractable probe tip protects

sensor when thermometer not in use

• Probe cannot be extended

when probe cover dispenser is empty or missing

• Choice of operating modes

includes oral, core, and rectal equivalency

• Surface operating mode scans

skin surface temperatures

• One-touch Fahrenheit – Celsius

selector switch

• Simple, 1–2–3 step operation

• Convenient and lightweight

one-piece design

• Large, LCD display shows

temperature, mode, and other status indicators.

• Visual and audible pulse/

respiration timer

• Memory recall displays last

temperature taken

• Thermometer continuously and

automatically self-calibrates before every use

• Optional wall mount allows the

thermometer to be locked into place.

• Field calibration can be

performed in minutes with the Welch Allyn 9600 Calibration Tester

WALL MOUNT (OPTION)

9020 Users’ Manual

REMOVING THE 9020 FROM THE WALL MOUNT

Lift the 9020 out of the wall mount while holding the release key to the right (as shown here). This release key temporarily disengages the wall mount’s spring latch mechanism and allows the thermometer to be removed.

RELEASE KEY

Welch Allyn 9020 Infrared Tympanic Thermometer

CONTROLS

SLIDE

Moves forward to extend the probe, automatically applying a probe cover. Moves backward to retract the probe, automatically removing the probe cover. Once the probe is partially advanced or partially retracted, you cannot reverse the direction of the slide.

The slide will not move unless a probe cover dispenser containing probe covers is in place.

PROBE COVER DISPENSER WINDOW

Vertical window in the handle of the 9020 allows you to check the supply of probe covers remaining in the dispenser.

BATTERY COMPARTMENT

Approximately 1 year of operation (depending on usage) from each set of 4 AAA batteries. Visual and audible signals indicate when batteries are low.

RECALL

BUTTON

When pressed, the

last temperature taken

will appear on the

display for 5 seconds.

Moving the slide forward

erases the previous

temperature from the

thermometer's memory.

MODE SWITCH

Cycles through Oral,

Rectal, Core, and

Surface to select the

operation mode.

Temperatures must

be taken in the mode

desired; they will

not be converted

between modes.

9020 Users’ Manual

LCD DISPLAY

Display provides readout of temperature, status, operation mode, and error conditions. Ergonomically designed for visual access as you hold the thermometer.

PULSE TIMER BUTTON

Pressing this button activates a 30-second visual and audible timer to measure respiration and/or pulse.

°F/°C SWITCH

Toggles the thermometric scale between Fahrenheit and Celsius, at any time. When this button is pressed, the currently displayed temperature will be converted, and redisplayed.

PROBE

When inserted into the ear,

the infrared sensor in the

probe scans thermal energy

radiated within the ear canal.

SCAN

BUTTON

After inserting

the probe into the

ear canal, press this

button to take a

temperature. The

infrared sensor then

measures tympanic

temperatures, and

after 1 second with

no increase in

temperature, the

highest of these

temperatures is

displayed.

Welch Allyn 9020 Infrared Tympanic Thermometer

DISPLAY INDICATORS

30-SECOND PULSE TIMER

Press the PULSE TIMER button to check pulse or respiration. The first of six 5-second segments blinks once per second for five seconds, and then remains steady. The other segments continue the countdown pattern until 30 seconds has elapsed. The 9020 beeps when the timer is first activated, after 15 seconds, and again after 30 seconds.

FAHRENHEIT/CELSIUS

This indicator shows the current thermometric scale, Fahrenheit (F) or Celsius (C). Press the °F/°C switch to toggle between these scales, and the currently displayed temperature is automatically converted.

LOW BATTERY

This symbol appears when the thermometer’s microprocessor detects a low battery condition. Once the Battery symbol is displayed, the 9020 will not function until the batteries have been replaced.

THERMOMETER READY

The Ready symbol (a thermometer in a circle) indicates that the 9020 has completed selfcalibration procedures. The thermometer is ready for use in 2 – 15 seconds between temperature measurements.

RETRACT SLIDE

This symbol appears, along with an audible double-beep, as a reminder when the probe has not been fully retracted. After taking a temperature, always move the slide back to its original position to protect the probe from damage and debris.

MALFUNCTION

If the 9020 requires service due to an internal malfunction, this symbol appears, along with a numeric error code indicating the nature of the problem. When this indicator is displayed, no temperatures can be taken.

UNDER/OVER TEMPERATURE RANGE INDICATORS

This Up Arrow/Down Arrow symbol blinks for five seconds, then remains steady if the 9020 detects a temperature that is beyond the normal operating range (75.0°F – 108.0°F). The Down Arrow indicates a temperature below 75°F. The Up Arrow indicates a temperature above 108°F.

9020 Users’ Manual

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