Welch Allyn, Inc.
6 SureTemp
®
Model 670/SureTemp 4
®
Model 675
If the display goes blank after the probe type display, the probe has passed its tests and the instrument is
ready for use. Do not withdraw the probe during this self test. If the display shows an error code (such as
E5.4), the probe is suspect.
Note:
Probes are very sensitive to temperature variations and the self tests include thermal tests that can
be disturbed by any temperature changes. Therefore it is extremely important to minimize thermal
disturbance before and during these tests. Handle the probe only by the probe handle, not the metal shaft,
and minimize the amount of time the instrument is held in the hand before and during these tests.
The instrument stores individual probe characteristics as a result of this test so it is important to reinitialize
the probe after any repair has been done to the instrument or probe.
When removing a probe, always extract the probe from the storage channel first and then disconnect the
connector by pulling on the connector body. Do not pull by the cord.
If there are any problems with probe initialization refer to the
Troubleshooting
section on page 22.
Normal Mode
After instrument and probe self tests, the system is ready for use. Normal mode operation is the rapid mode
of temperature taking. This mode is selected by the switch on the top of the instrument before the probe is
withdrawn from the probe channel.
Upon withdrawal of the probe from its storage channel, the beeper will sound and every segment on the
display will be illuminated. Load a probe cover at this time and watch for the display to change from the all
segments test to the probe type display; “OrL” or “rEC” followed by
°
C or
°
F, which ever is selected. This
display might take several seconds to appear. At this point the instrument is ready for the probe to be
inserted into the patient.
Note:
It is possible that the display will switch from the probe type display to the “walking segments” display
and back again several times before the probe is inserted in the mouth. This is acceptable operation and will
not adversely effect the temperature taken, but is indicative of the need to “re-characterize” the probe. Refer
to the
Probe Self Tests
section on page 5.
Note:
The unit cannot be switched from Monitor mode to Normal mode with the probe out of the storage
channel. A double beep will indicate this error and the probe must be returned to the channel to restart the
thermometer.
The thermometer will automatically switch to Monitor mode under some conditions. These are:
1. If the prediction algorithm has not been activated for more than 30 seconds after taking the probe out of
the storage channel.
2. If the instrument determines that room temperature is above 33.9
°
C (93.0
°
F).
3. If the thermometer is unable to predict a temperature after 15 seconds due to improper technique such
as excessive probe movement at any patient site (i.e. mouth, rectum).
Note:
The thermometer reads the probe temperature immediately upon removal from the storage channel.
If the probe was just replaced from a previous temperature and immediately extracted, insufficient time has
passed to allow the probe to cool to room temperature. This will result in the instrument determining room
temperature to be higher than actual. This could result in the instrument switching to Monitor mode
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