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To be able to use the lid for calibration, holes must be drilled in to it, in 
order to fit your calibration needs. If you use many different sizes of 
sensors more lids can be purchased at your JOFRA supplier. 
 
It is advisable to drill the holes at the same size as the sensors plus 
0,5mm and distribute the holes evenly over the lid.  
 
 
3.3.4  Inserting the sensors 
Be sure that the sensors can be calibrated in fluid. E.g. certain ceramic 
sensors might be destroyed. 
 
 
 
 
Caution… 
 The insertion tube must be clean before use. 
 Scratches and other damage to the insertion tubes 
should be avoided by storing the insertion tubes 
carefully when not in use. 
 Carefully wipe off all silicone oil from the sensor-under-
test to avoid spreading of the silicone oil. 
 
 
 
Caution – Hot surface 
 Do not touch the lid or the spill tray when the calibrator 
is heating up – they may be very hot. 
 Do not touch the tip of the sensor when it is removed 
from the well – it may be very hot. 
 Do not touch the handle of the calibrator during use – 
it may be very hot.