Welch Allyn Medical Diagnostic Equipment Thermometer 690 Manual De Usuario

Whenever the clinical accuracy of the thermometer is in question, verify the instrument 
calibration. Your hospital biomedical department should establish a routine schedule for 
verifying instrument calibration. It is recommended the unit be tested annually.

This method uses a fixed value to verify that the device is calibrated properly.

1. Remove any probe currently connected to the SureTemp

®

 Plus Thermometer.

2. Connect the SureTemp

®

 Plus Cal-Key (PN 06138-000).

3. Wait one minute for the device to enter Monitor mode and display the temperature.

4. The temperature should read 36.3 +/- 0.1ºC or 97.3 +/- 0.2ºF.

5. Remove the SureTemp

®

 Plus Cal-Key.

6. Connect the original probe back to the device.

This method is used to verify the calibration of the unit and probe pairing at two different 
temperatures. Use a verified thermometer from the Cal-Key Verification (3.5.1) and a 
functioning probe.

Caution: Store thermometers for testing in the same room as the 9600 Calibration Tester for 
approximately 30 minutes prior to testing to allow for thermal accomodation.

1. Plug in the Model 9600 Calibration Tester. 

2. Choose the 96.4ºF/35.8ºC temperature setting. It is important to use the lower 

temperature setting first because the stabilization time from a high temperature to a low 
temperature takes about 20 minutes. Stabilization from lower temperature to higher 
temperature requires about four (4) minutes.

3. Wait for the Ready or green light to come on and stay on. This should take about six (6) 

minutes.

4. Remove the probe from the well and clean it with either a 70% isopropyl alcohol solution, 

a 10% chlorine bleach solution, or a non-staining disinfectant. Let the probe air dry. Do not 
apply a probe cover. Place the thermometer in Monitor Mode. Refer to the thermometer’s 
Operator’s Manual.

5. Lift the rubber flap on the 9600 and insert the probe fully into the small hole on top             

of the 9600.

6. Wait 2 minutes for the probe temperature to fully stabilize. The temperature should read 

between 96.1ºF/35.6ºC and 96.7ºF/36.0ºC.

7. Remove the probe from the small hole on top of the 9600 and replace it in the probe well.

8. Change the temperature setting to the 106ºF/41.1ºC setting.

9. Wait for the Ready or green light to come on and stay on. This should take about four (4) 

minutes.

10. Pull the probe from the well, but do not load a probe cover. Place the thermometer in 

Monitor Mode. Refer to the thermometer’s Operator’s Manual.