Welch Allyn Calibration Key for SureTemp 690/692

The Cal-Key verification is a method that uses a fixed value to verify that the device is calibrated properly. It’s a reliable tool designed to ensure the accuracy and performance of your SureTemp thermometer. As an essential accessory for healthcare professionals, it ensures consistent and trustworthy temperature readings in all settings.

Follow the directions below from the SureTemp Service Manual.

3.6 Calibration Testing

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.

3.6.1 Cal-Key Verification

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.
5. Connect the original probe back to the device.

The Welch Allyn Thermometer Calibration Key is for SureTemp^® models 690/692.