User Manual

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.