Teledyne Percent Oxygen Analyzer, 9060L Error Messages, Low Temperature, Open Thermocouple

Operation Model 9060L

Within the time the temperature is being displayed, one can use the UP and DOWN arrow keys to adjust the temperature, thus recalibrating the temperature readout.

WARNING: TEMPERATURE READING IS CALIBRATED AT THE FACTORY. DO NOT ATTEMPT RECALIBRATION OF THE PROBE TEMPERATURE. ERROR OF A FEW DEGREES WOULD HAVE LITTLE IMPACT ON THE OXYGEN CALCULATIONS, BUT IF THE PROBE IS GROSSLY MISCALIBRATED IT WILL HAVE AN ADVERSE EFFECT ON THE OXYGEN READOUT. ONLY QUALIFIED PERSONNEL SHOULD RE- CALIBRATE TEMPERATURE.

4.8.1 Low Temperature

For the zirconia sensor to operate properly the temperature of the probe must be above 650 degrees Centigrade. While the temperature is below this threshold, the red LED alternates showing “t-Lo”and the oxygen concentration.

4.8.2 Open Thermocouple

The electronics checks if the thermocouple (TC) is open. If it detects that the TC is open the Sensor failure contacts will go into alarming position. Red LED display may alternate between oxygen concentration and the error code “-02-”. Refer to Section 4.9 for information on Error Codes.

4.9 Error Messages

The instrument will display an error code when it detects a malfunction or error condition. The possible codes and common causes are listed below:

-01-This message indicates that there is possible failure on the Analog to Digital Converter, ADC. This may happen when the micro-controller cannot communicate with the ADC. In this state, the oxygen reading is unreliable.

-02-This message is displayed when the input voltage to the ADC rises above the upper limit of the ADC. This could occur if the probe is exposed to zero oxygen concentration, making the

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