Temperature Audit on TK units

[Oldmanfrigy]

I have 37 units to check and would like to know if anyone has the criteria for temperature certification?

I download the controler then run the unit for an hour at -10 deg C. I also have an independant logger half way inside the van on the floor and about 2 feet off the floor. At the end of one hour I download again, all the time the unit is running I also check that the controler is the same temperature as the independent logger.

When I print out the info every van has a different differential. Some go one degree over and below the set point some go 4 degrees below.

Are there different standards around the world? I am in Australia.

[gravy258]

I always put the independant logger next to or close to the unit sensor. If the box is empty theres little point putting it elsewhere, too many variants .

Your only really checking the sensor calibration.
Usually there +-2 degrees which is 'in range'
I usually calibrate at zero celcius on the fridge display
But in summer just 15 minutes running and calibrated to whatever the temperature is.

[Oldmanfrigy]

Thanksyou-