Dako Pascal - Manual (Page 18)

Pascal Handbook 18
Biannually
Pascal Calibration Protocol
Pascal calibration is performed at two temperatures. Both calibration points must be
performed for a complete Pascal calibration procedure. While the complete calibration
procedure is recommended every 6 months, it is also recommended to perform the room
temperature calibration prior to each use
Room Temperature Calibration
1.
Plug Pascal into power supply
• Turn on the power switch located on the right side, next to the front panel.
2.
Place 500 mL water into Pascal pan and equilibrate to room temperature for 15 –
20 minutes.
• This step is necessary in order to validate the starting temperature.
• Do not add warm water to speed up the process.
3.
Read the temperature on the digital display.
4.
Insert a calibrated thermometer in the Pascal pan containing 500 mL of water.
Compare the thermometer temperature reading to the digital display reading. If the
digital display matches the thermometer reading within 0.5 ºC then the instrument
should be considered within calibration limits for the Room Temperature
Calibration check point. Proceed to the High Temperature Calibration.
If the readings fail to match by greater than 0.5 ºC, adjust the digital reading by
following these steps:
• Turn the main power switch off.
• Turn it back on while pressing the Up
and Down arrows at the same
time.
• Confirm that all 6 LEDs are illuminated; this indicates that Pascal is in
calibration offset mode.
• Press the “Display Set” button one time.
• Use the Up
or Down arrow to adjust the offset so the digital
temperature read out will match the calibrated thermometer. Example: The
digital reading is 25 ºC, and the thermometer reading is 26 ºC. The action
required is to adjust the offset up by 1 ºC.
• Once the calibration is set press the “Display set” button two times to exit the
calibration mode.
High Temperature Calibration
1. Ensure that Pascal is set to factory settings for SP1, SP2, and SP Limit for the
High Temperature Calibration procedure. If Pascal settings have been changed
from factory specified settings refer to the Operating Instructions section in this