Welch Allyn SureTemp 986 Service Manual page 16

2. Service
10
The typical slow rise in temperature when Peak Monitor mode is
used is due mainly to the mouth temperature slowly recovering
from placement of the colder (room temperature) probe. The probe
itself is actually very fast at rising to the temperature of its
surroundings, usually reaching it within a few seconds. Because of
this slow mouth recovery, three minutes is the recommended time
to wait before recording a Peak Monitor mode temperature.
Peak Monitor mode is also useful in testing the accuracy of the
thermometer when the probe can be warmed to a known
temperature, as with a Welch Allyn Model 9600 Calibration Tester
or in a water bath (see section 2.4).
In Peak Monitor mode, after approximately 60 seconds of no
increase in temperature, the ° ° C / ° ° F icon stops flashing. You will
hear two triple beep sounds, and the peak temperature will be
displayed on the LCD.
Note: If the unit is left in Peak Monitor Mode for a total of five
minutes, it will automatically shut off to conserve power.
If Peak Monitor mode does not display expected temperatures,
refer to the Troubleshooting table on page 22.
°F / °C Conversion
When a final temperature is displayed (in Normal, Recall, or
Monitor mode), press and release the Mode button to toggle the
temperature between °F/°C.
Note: A recalled temperature will be displayed in whichever scale
(°F/°C) is selected at the time of recall. This setting can be
changed during display.
If pressing the Mode button does not change the scale of the
displayed temperature, refer to Mode Button Problems in the
Troubleshooting table on page 22.
Temperature Recall
With the instrument in low-power mode (sleep mode or blank display),
press and release the Mode button to cause the most recent
measured temperature to be displayed for five seconds. The stored
temperature value appears with a °F or °C symbol (whichever is
selected) and an M indicating it is from memory.
•
If the recalled temperature was a normal mode temperature,
the flashing symbol of the measurement site is also displayed.
•
If the recalled temperature was a Peak Monitor temperature,
only the temperature is displayed, with no site indicated.
Activation of the probe well switch (place the probe in the well) will
interrupt the temperature recall function.
70995-0000B M986