Welch Allyn 9600 Plus, Manual, Page: 23 / 118

Directions for Use Chapter 3 Operation 17
5. Apply a new probe cover.
6. Place the probe firmly into the Ear Device Port (Figure 5) .
7. Wait approximately 3 seconds, press the thermometer Start
button, and watch for the “Exac Temp” light to flash.
8. Leave the thermometer in the 9600 Plus Calibration Tester
until you hear a beep.
9. Remove the Pro 4000 Thermometer from the 9600 Plus
Calibration Tester and read the temperature in the
thermometer’s display. If the temperatures are within ±0.2° C
(±0.4° F), the thermometer is within calibration.
10. Wait 1 full minute before taking another reading with the
same thermometer. Repeated measurements in short
sequence may cause higher readings.
11. The probe cover must be replaced with a new probe cover
before each reading, to remove any residual heat absorbed
from the 9600 Plus Calibration Tester
12. The device will exit CAL mode after four minutes.
13. When using only one 9600 Plus Calibration Tester, test all
available thermometers for calibration verification at the
current Calibration Set Point Temperature. Proceed to the next
Calibration Set Point Temperature, see
"Changing the
Calibration Set Point Temperature" (page 11) .
Caution Prolonged body contact with the thermometer
may impact measurements. When instructed to wait
before performing the next step place the thermometer
on the work surface.