F/C Conversion; Temperature Recall; Biotech Mode - Welch Allyn SureTemp Plus 690 Service Manual

2.3.9 F/C Conversion

The temperature switches to °F or °C scale by pressing and releasing the C/F button. The
default temperature scale can be set to °F or °C in the biotech mode. A temperature must be
displayed on the screen to switch between °F and °C.

2.3.10 Temperature Recall

This mode displays the most recently completed predicted temperature.
Whenever the instrument is in Low Power or Pulse Timer mode, pressing and releasing the
Recall button on the front panel will cause the most recently predicted temperature to display
for 5 seconds. The unit will then automatically go into Low Power mode.
Pulling the probe from the well in Recall mode will start a predict cycle. To enter Biotech
mode, hold the Recall button down and then pull the probe from the well. Model 692 units
must be in the wall holder to enter Biotech mode.
Pressing the Pulse Timer button on the Model 692 thermometer will interrupt the temperature
recall function.
Note: No Monitor mode temperatures are saved for recall. When a temperature is recalled,
the mode in which it was obtained (Oral, Adult Axillary, Pediatric Axillary, or Rectal) is
displayed, regardless of the current mode the thermometer is in.

2.3.11 Biotech Mode

This mode is used to set and check special features of the thermometer listed in Table 2-1. All
Biotech mode settings are saved so they are not lost when the batteries are replaced.
1. Place the thermometer in the wall holder (Model 692 Only).
2. Press and hold the Recall button, while removing the probe from the probe well. Once the
probe is removed, release the Recall button.
3. Press and release the Recall button to move sequentially through the various program
categories. Changes within each category are made by pressing and releasing either the
Mode Selection or C/F button.
4. The Biotech mode control settings are stored in nonvolatile memory so that they are not
lost when the batteries are changed. The Biotech mode will automatically time out after 5
minutes of inactivity.
5. Replacing the probe into the probe well at any time will exit the Biotech mode and return
the unit to normal operation.
SureTemp® Plus Service Manual 11