Calibration of Laboratory Oven
1.0 PURPOSE
The purpose of the standard operating procedure is to provide guidelines for calibration
of Laboratory Oven.
2.0 SCOPE
The scope of this standard operating procedure includes calibration of Laboratory
Oven.
3.0 RESPONSIBILITY
3.1 Section Incharge
3.2 Technical Manager
3.3 Q.A. Manager
4.0 PROCEDURE
4.1 Switch on the instrument.
4.2 Ensure that the temperature indicator/controller is in working condition i.e. the set
temperature should be maintained / retained properly.
4.3 Ensure that the door of laboratory oven is properly closed and does not loosen
during operation.
4.4 Ascertain and set the points/points at which calibration is required.
4.5 Switch on the laboratory oven and allow it to reach the set point temperature.
4.6 Apparatus Required For Calibration:Platinum resistance thermometer with sensor
and digital temperature indicator.
4.7 CALIBRATION:
4.7.1 Insert the sensor of the reference/calibrator sensor (PRT) in the laboratory oven
as near as possible to the sensing tip or sensor of the temperature
controller/indicator of the laboratory oven.
4.7.2 When the temperature is stable note down the temperature reading as indicated by on the laboratory oven and the reference indicator simultaneously.
4.7.3 Take at least three to four readings for better accuracy and reproducibility.
4.7.4 Set the next point and record the temperature readings accordingly.
4.7.5 Correlate the readings observed with the reference standards and apply corrections, if necessary.
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