Welch Allyn SureTemp Plus REF 692 User manual

SureTemp® Plus
REF 690 and 692

Printed in Mexico.
U.S. Patent 5,632,555; 6,000,846; 6,036,361; 6,971,790. Additional U.S. and
foreign patents pending.
AGENCY APPROVALS
CERTIFIED TO: CAN/CSA STD C22.2 NO. 601.1
CONFORMS TO: IEC 60601-1, 60601-1-2, UL STD 2601-1
EMC Framework of Australia
The CE mark on this product indicates that the product has
been tested to and conforms with the provisions noted
within the 93/42/EEC Medical Device Directive.
Authorized European Representative Address:
European Regulatory Manager
Welch Allyn Ltd.
Navan Business Park
Dublin Road
Navan, County Meath
Republic of Ireland
Tel: + 353 46 90 67700
Fax:+ 353 46 90 67756
CaviCide®is a registered trademark of Metrex Research Corporation
[phone].
©2003 by Welch Allyn, Inc. All rights reserved. No part of this manual may be
reproduced or transmitted in any form or by any means, electronic or mechanical,
including photocopy, without prior written consent from Welch Allyn.
WELCH ALLYN PTY LTD
5/38-46 SOUTH STREET
RYDALMERE
NSW 2116
AUSTRALIA
US
C
166292

Table of Contents
SYMBOLS AND DESCRIPTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1
SAFETY AND WARNINGS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2
INTRODUCTION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4
SURETEMP PLUS MODEL COMPARISON CHART . . . . . . . . . . . . . . . . . . . . . 1-5
INDICATIONS/CONTRAINDICATIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
PARTS AND FEATURES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
BUTTON FUNCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
SET-UP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7
DISPLAY INDICATORS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9
ORAL TEMPERATURE MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12
AXILLARY TEMPERATURE MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . 1-14
RECTAL TEMPERATURE MEASUREMENT . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16
MONITOR MODE TEMPERATURE MEASUREMENT . . . . . . . . . . . . . . . . . . 1-18
INSTRUMENT SECURITY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
MAINTENANCE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
CLEANING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-21
DISPOSAL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-22
PERFORMANCE AND TECHNICAL SPECIFICATIONS . . . . . . . . . . . . . . . . . 1-23
REPLACEMENT PARTS AND ACCESSORIES . . . . . . . . . . . . . . . . . . . . . . . . 1-24
SERVICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-24
LIMITED WARRANTY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-25
SERVICE CENTERS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-26

1-1
SYMBOLS AND DESCRIPTIONS
ATTENTION: Caution consult user’s manual for additional
information.
Type BF Applied Part
Handle with Care
Transport/Storage Temperature
Transport/Storage Humidity
Internally Powered Alkaline Battery - AA 1.5V
IPXØ Not protected against the ingress of water.
Latex Free
Do not dispose of this product as unsorted municipal waste.
Prepare this product for reuse or separate collection as
specified by Directive 2002/96/EC of the European
Parliament and the Council of the European Union on Waste
Electronic and Electrical Equipment (WEEE). If this product
is contaminated, this directive does not apply.
For more specific disposal information, see
www.welchallyn.com/weee, or contact Welch Allyn
Customer Service at [phone].
+
LATEX

1-2
SAFETY AND WARNINGS
In order to obtain accurate and reliable temperature results and
ensure patient safety, it is important that this booklet is read
thoroughly prior to using the instrument. If you have any technical
or clinical questions concerning the thermometer’s use and/or
care, please contact the Welch Allyn Customer Service
Department.
Use single-use Welch Allyn disposable probe covers to limit
patient cross-contamination. The use of any other probe cover
may produce temperature measurement errors or result in
inaccurate readings.
Do not take a patient’s temperature without using a Welch Allyn
disposable probe cover. Doing so can cause patient discomfort,
patient cross contamination, and erroneous temperature
readings.
Long-term continuous monitoring beyond three to five minutes is
not recommended in any mode.
Biting the probe tip while taking a temperature may result in
damage to the probe.
Oral/axillary probes (blue ejection button at top of probe) and blue
oral/axillary removable probe wells are used for taking oral and
axillary temperatures only. Rectal probes (red ejection button) and
red rectal removable probe wells are used for taking rectal
temperatures only. Use of the probe at the wrong site will result
in temperature errors. Use of the incorrect removable probe well
could result in patient cross contamination.
To ensure patient safety and temperature measurement accuracy,
use only accessories and supplies recommended or supplied by
Welch Allyn.
Equipment is not suitable for use in the presence of a flammable
anesthetic mixture with air or with oxygen or nitrous oxide.
The thermometer case, connectors, and probe are not
waterproof. Do not immerse or drip fluids on these items. Should
this occur, dry the device with warm air. Check all operating
functions for proper operation.

1-3
Do not take an axillary temperature through patient’s clothing.
Direct probe cover to skin contact is required.
The Welch Allyn SureTemp Plus thermometer consists of high
quality precision parts. Protect it from severe impact and shock. A
qualified service technician must check any SureTemp Plus
thermometer which is dropped or damaged to ensure proper
operation prior to further use. Do not use the thermometer if you
notice any signs of damage to the probe or instrument. Contact
the Welch Allyn Customer Service Department for assistance.
Welch Allyn recommends that batteries are removed for long term
storage since alkaline batteries can deteriorate and leak over
extended periods of time, and possibly cause damage to the
thermometer.
Do not autoclave. Please note the cleaning procedures described
on page 21 of this manual.
Do not use this instrument for any purpose other than that
specified in this booklet. Doing so will invalidate the instrument’s
warranty.
This thermometer complies with current required standards for
electromagnetic interference and should not present a problem to
other equipment nor is it effected by other devices. As a
precaution, avoid using this device in close proximity to other
equipment.

1-4
INTRODUCTION
Congratulations on your purchase of the Welch Allyn SureTemp Plus Thermistor
Thermometer. Please follow the operating and maintenance instructions provided
in this manual to ensure years of accurate and reliable service. Please read these
instructions thoroughly before using the instrument, and then store these
instructions in a safe place for future reference.
The Welch Allyn SureTemp Plus is a portable thermistor thermometer used for
accurately measuring body temperatures at oral, axillary, or rectal sites.
Normal body temperature is a range, which varies from person to person and is
influenced by factors such as time of day and an individual’s level of activity,
ingested medications, age, and gender. A person’s normal temperature tends to
decrease with age.
The following table shows that ranges of normal also vary by site. Do not directly
compare measurements from different sites.
This booklet provides informative tips and instructions for using the SureTemp
Plus model 690 and model 692 thermometers. The chart on the following page
provides details about the differences between these SureTemp Plus
instruments.

1-5
SURETEMP PLUS MODEL COMPARISON CHART
This manual describes features found in SureTemp Plus model 690 and 692
thermometers. Certain features are not available to users of the model 690
thermometer.
SureTemp Plus
Model 690
SureTemp Plus
Model 692
Probe Cover Storage X X
F/C Conversion X X
Last Temperature Recall X X
Monitor Mode X X
Detachable Probe X X
Oral / Axillary / Rectal
Modes on Each
Thermometer
XX
Color-Coded Removable
Probe Well
XX
Wall-Holder Standard X
Pulse Timer X
Backlight X
Security (Electronic) X
Configurable On-Screen
Labeling for
Identification of
Instrument
X
Sold in U.S./Canada X X
Sold Internationally X X
Instrument Warranty 2 years 3 years
Removable Probe Well 90 days 90 days
Probe Warranty 1 year 1 year

1-6
INDICATIONS/CONTRAINDICATIONS
The Welch Allyn SureTemp Plus thermometer measures patient’s temperature in
the oral, axillary, and rectal body sites of adult, pediatric, and newborn patients.
The device is not designed, sold, or intended for use except as indicated.
PARTS AND FEATURES
You can find the serial number of your device on a label affixed to the rear housing
inside the unit’s probe cover storage compartment. Please note the parts of your
Welch Allyn SureTemp Plus thermometer as shown below:
Thermometer
LCD Display
Probe
Ejection Button (blue or red)
Removable Probe Well (blue or red)
Latching Probe Connector
Battery Door/Probe Cover
Storage Compartment
C/F (Celcius/
Fahrenheit) Button
Pulse Timer Button
(692 Only)
Mode Selection
Button
Recall Button
Box of Probe Covers

1-7
BUTTON FUNCTIONS
SET-UP
ASSEMBLING THE UNIT
Your SureTemp Plus thermometer is shipped to you with three 1.5V AA batteries
installed.
1. Install the oral/axillary probe (blue ejection button) or optional rectal probe
(red Ejection button) by inserting the latching probe connector on the end of
the coiled cord into the unit’s plug receptacle. Ensure that the connector
snaps into place. The LCD will illuminate for approximately 7 seconds and
will then turn off.
Buttons Procedure
C/F Press and release the C/F (Celsius/Fahrenheit)
button to toggle between temperature scales any
time a temperature is displayed on the LCD.
Pulse Timer
(692 Only)
Press and release the Pulse Timer button to activate
the timer. Audible beeps sound at 0, 15, 30, 45, and
60 seconds. The timer turns off automatically after 60
seconds. You can stop the timer at any time by
pressing the Pulse Timer button or by removing the
probe from the probe well.
Mode Selection Press and release the Mode Selection button after
you have withdrawn the blue probe from the probe
well to change the current measurement site to Oral,
Adult Axillary, or Pediatric Axillary. The selected
measurement site is displayed by a flashing body site
icon. Note that no other measurement sites are
available when using the red probe in the Rectal
Mode.
Recall Press and release the Recall button when the display
is blank to recall the last completed predicted
temperature. The LCD will display the recalled
temperature for five seconds along with the battery
icon, temperature scale, mode selection, and probe-
position icon (if applicable).

1-8
2. Connect the appropriate removable probe well to the thermometer. Note that
the cut-out in the probe well fits over the probe cord strain relief. Ensure that
the removable probe well “snaps” into position and is completely seated to
the thermometer. Place the probe into the well.
3. Insert the box of Welch Allyn disposable probe covers into the probe cover
storage holder. To open the box of probe covers, remove and discard the tear-
away corner. You will see the ends of the probe covers in the box.
MOUNTING THE UNIT
Mount the wall-mount bracket in a location such as an interior wall or wall divider
so that the thermometer remains at ambient room temperature. Mounting the
unit on an uninsulated exterior wall, in an area directly hit by sunlight, above heat
radiators or powered equipment (including computers and lights), or below air
conditioning outlets is not recommended.
Proper mounting of the unit will prevent tangling of the probe cord with other
equipment at the patient’s bedside.
1. Mount the instrument so
that all other objects are
no closer than 4 inches
(10.25 cm) from the sides
and bottom of the unit.
2. Mount the wall mount a
maximum of 48 inches
(122 cm) from the floor.
3. Install the wall mount to
allow at least 12 inches
30.5 cm) clearance on top
of the instrument. This
provides ease of
removing and installing
the probe and probe well
or installing probe covers
onto the probe.

1-9
DISPLAY INDICATORS
Instrument Malfunction
The device is not working properly. Call Welch
Allyn’s Customer Service Department for
assistance.
Broken Probe
The probe is broken. Replace probe or call Welch
Allyn’s Customer Service Department for
assistance.
Loss of Tissue Contact
The probe has lost contact with the patient’s
tissue. The icon will disappear once proper contact
is achieved. The icon will later reappear at the end
of the temperature measurement. It is
recommended that you take a new temperature
reading.
ID Field
This is a seven-character field that allows
customized identification of the instrument via
user-selected letters and numbers. See the Model
690/692 Service Manual for set-up instructions.

1-10
Walking Segments
The dark bar will move around the display when the
thermometer is in the process of taking a
temperature.
Oral Mode
This flashing icon and/or word are displayed to
show that the Oral Mode is selected.
Adult Axillary Mode
This flashing icon and/or words are displayed to
show that the Adult Axillary Mode is selected.
Ped Axillary Mode
This flashing icon and/or words are displayed to
show that the Pediatric Axillary Mode is selected.
Rectal Mode
This flashing icon and/or word are displayed to
show that the Rectal Mode is selected.
Monitor Mode
This icon is displayed while in Monitor Mode.
Monitor Mode is used for continuous temperature
monitoring when difficult situations prevent
accurate temperatures in the Normal Mode. For
oral and rectal sites, three minutes of continuous
monitoring is recommended for an accurate
temperature reading. For axillary sites, five minutes
of continuous monitoring is recommended.
Patient Temperature Exceeds Upper
Measurement Range Limit of 110.0 °F (43.3 °C)

1-11
Patient Temperature Is Lower than
Measurement Range Limit of 80.0 °F (26.7 °C)
Ambient Temperature Exceeds Upper
Measurement Range Limit of 104.0 °F (40.0 °C)
Ambient Temperature Is Lower than
Measurement Range Limit of 50.0 °F (10.0 °C)
Pulse Timer
This icon indicates that the device is in the Pulse
Timer Mode.
Low Battery
A single flashing segment appears on the battery
symbol. Normal operation is not affected. Replace
the batteries.
Dead Battery
An open battery symbol remains on the LCD and
the device will not operate. Replace the batteries.
Security Mode
The instrument is in Security Mode. Return the
thermometer to the wall holder to resume normal
operation See page 20 to set the instrument in
Security Mode (Model 692 only).

1-12
ORAL TEMPERATURE MEASUREMENT
Using Probe with Blue Ejection Button and Blue Probe Well
When used correctly, the SureTemp Plus thermometer accurately measures an
oral temperature in approximately 4–6 seconds. The ability of the SureTemp Plus
thermometer to take an accurate oral temperature requires correct user
technique.
TAKING AN ORAL TEMPERATURE
1. Ensure that the oral probe (blue ejection button) and the blue probe well
are installed.
2. Holding the probe handle with your thumb and two fingers on the
indentations of the probe handle, withdraw the probe from the probe well.
3. Verify that the oral model icon is selected by observing the flashing
head icon on the instrument’s display. If this icon is not flashing, press
the Mode Selection button until the head icon appears.
4. Load a probe cover by inserting the probe into a probe cover and
pressing the probe handle down firmly. The probe handle will move slightly to
engage the probe cover.
5. With the Oral Mode indicator flashing, quickly place the probe tip under the
patient’s tongue on either side of the mouth to reach the rear sublingual
pocket. Have the patient close his/her lips around the probe.
Use only Welch Allyn probe covers. The use of other manufacturer’s
probe covers or no probe cover may produce temperature
measurement errors and/or inaccuracy.

1-13
6. Hold the probe in place, keeping the tip of the probe in contact with the oral
tissue throughout the measurement process. Rotating “walking” segments
appear on the display, indicating that measurement is in progress.
7. The unit will beep three times when the final temperature is reached. The
measurement site, temperature scale, and patient temperature will display
on the LCD. The final temperature will remain on the display for 30 seconds.
8. If you cannot correctly measure the patient’s temperature in
Normal Mode, the unit will automatically enter Monitor
Mode. In this mode, measurement time is extended. Either
repeat the temperature measurement in Normal Mode in the
opposite sublingual pocket or keep the probe in place for
three minutes in Monitor Mode. The thermometer will not beep to indicate a
final temperature. Record the temperature before removing the probe from
the site, as the temperature reading is not maintained in memory.
9. After the temperature measurement is complete, remove the probe from the
patient’s mouth. Eject the probe cover by firmly pressing the ejection button
on the top of the probe.
10. Return the probe to the probe well. The LCD display will go blank.
Long-term continuous monitoring beyond three minutes is not
recommended in the Oral Mode.
Patient actions may interfere with accurate oral temperature
readings. Ingesting hot or cold liquids, eating food, chewing gum or
mints, brushing teeth, smoking, or performing strenuous activity
may affect temperature readings for up to 20 minutes after activity
has ended.

1-14
AXILLARY TEMPERATURE MEASUREMENT
Using Probe with Blue Ejection Button and Blue Probe Well
When used correctly, the SureTemp Plus thermometer accurately measures an
axillary temperature for pediatric patients (ages 17 and younger) in approximately
10–13 seconds and for adult patients (ages 18 and older) in approximately 12–15
seconds.
PLACING THE THERMOMETER INTO AXILLARY MODE
1. Ensure that the axillary probe (blue ejection button) and the blue probe
well are installed.
2. Holding the probe handle with your thumb and two fingers on the
indentations of the probe handle, withdraw the probe from the probe well
3. Verify that the axilliary mode is selected by observing the correct flashing
axillary icon on the instrument’s display. If this icon is not flashing, press the
Mode Selection button to select the Adult Axillary or Pediatric Axillary icon is
displayed.
TAKING AN AXILLARY TEMPERATURE
Adult
Axillary
Mode Icon
Pediatric
Axillary
Mode Icon
To ensure optimal accuracy, always confirm that the correct axillary
mode is selected.
After a temperature is taken and the probe is returned to the probe
well, the instrument reverts to the original measurement site mode.
Do not take an axillary temperature through patient’s clothing. Direct
contact between patient’s skin and the probe is required.

1-15
1. Load a probe cover by inserting the probe into a probe cover and pressing the
probe handle down firmly. The probe handle will move slightly to engage the
probe cover.
2. With the correct axillary mode indicator flashing, lift the patient’s arm so that
the entire axilla is easily seen. Place the probe as high as possible in the
axilla. Do not allow the probe tip to come into contact with the patient until
the probe is placed in the measurement site. Before this, any contact
between the probe tip and the tissue or other material may cause inaccurate
readings.
3. Verify that the probe tip is completely surrounded by axillary tissue and place
the arm snugly at the patient’s side. Hold the patient’s arm in this position
and do not allow movement of the arm or probe during the measurement
cycle. Rotating “walking” segments appear on the display, indicating that
measurement is in progress.
4. The unit will beep three times when the final temperature is reached. The
measurement site, temperature scale, and patient temperature will display
on the LCD. The final temperature will remain on the display for 30 seconds.
5. If you cannot correctly measure the patient’s temperature in
Normal Mode, the unit will automatically enter Monitor
Mode. In this mode, measurement time is extended. Either
repeat the temperature measurement in Normal Mode in the
opposite axilla or keep the probe in place for five minutes in Monitor Mode.
The thermometer will not beep to indicate a final temperature. Record the
temperature before removing the probe from the site, as the temperature
reading is not maintained in memory.
6. After the temperature measurement is complete, remove the probe from the
patient’s axilla. Eject the probe cover by firmly pressing the ejection button on
the top of the probe.
7. Return the probe to the probe well. The LCD display will go blank.
Use only Welch Allyn probe covers. The use of other manufacturer’s
probe covers or no probe cover may produce temperature
measurement errors and/or inaccuracy.
Long-term continuous monitoring beyond five minutes is not
recommended in the Axillary Mode.
Probe contact with electrodes, bandages, etc., poor tissue
contact, taking a temperature over clothing, or prolonged
exposure of axilla to ambient air can cause inaccurate
temperature readings.

1-16
RECTAL TEMPERATURE MEASUREMENT
Using Probe with Red Ejection Button and Red Probe Well
When used correctly, the SureTemp Plus thermometer accurately measures
rectal temperature in approximately 10–13 seconds.
TAKING A RECTAL TEMPERATURE
1. Ensure that the rectal probe (red ejection button) and the red probe well
are installed. The instrument will only operate in Rectal Mode when the red
rectal probe and probe well are installed.
2. Holding the probe handle with your thumb and two fingers on the
indentations of the probe handle, withdraw the probe from the probe well.
3. Observe the flashing lower-body icon on the unit’s display. Load a
probe cover by inserting the probe into a probe cover and pressing the
probe handle down firmly. The probe handle will move slightly to
engage the probe cover.
4. With the Rectal Mode indicator flashing, separate the patient’s buttocks with
one hand. Using the other hand, gently insert the probe only 1.5 cm (5/8 in.)
inside the rectum (less for infants and children). The use of a lubricant is
optional.
5. Tilt the probe so that the tip of the probe is in contact with tissue. Keep the
hand separating the buttocks in place, and hold the probe in place throughout
the measurement process. Rotating “walking” segments appear on the
display, indicating that measurement is in progress.
6. The unit will beep three times when the final temperature is reached. The
measurement site, temperature scale, and patient temperature will display
on the LCD. The final temperature will remain on the display for 30 seconds
7. If you cannot correctly measure the patient’s temperature in
Normal Mode, the unit will automatically enter Monitor
Mode. In this mode, measurement time is extended. Either
repeat the temperature measurement in Normal Mode or
keep the probe in place for three minutes in Monitor Mode.
The thermometer will not beep to indicate a final temperature. Record the
Use only Welch Allyn probe covers. The use of other manufacturer’s
probe covers or no probe cover may produce temperature
measurement errors and/or inaccuracy.
Incorrect insertion of probe can cause bowel perforation.