Liebherr WKt 4552 GrandCru User Manual
Page 23
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Temperature consistency and distribution
according to NF X 15-140
The Liebherr laboratory cabinets are all tested in-house to the NF X 15-140 test procedure. Liebherr’s modern R & D facility has climate controlled test rooms
which conform to EN 23953.
Description of the NF X 15-140 test procedure
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centred
1/10 B
1/10 T
1/10 H
LK(U)v, LCv, LK(U)exv, LG(U)ex and LGT laboratory appliances with Comfort-Controller
The general test conditions are as follows:
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Ambient temperature + 25 °C
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60 % relative humidity
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Refrigerator set temperature + 5 °C
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Freezer set temperature – 20 °C
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Low temperature freezer set temperature – 45 °C
Measurements are made using 9 x PT 100 air temperature probes positioned in accordance with NF X 15-140.
“Unless specifically stipulated, the temperature probes are located at equal distances from the walls of 1/10 of each of the dimensions of the internal volume
(w/h/d). The location of the probes used for characterisation forms a supposedly representative sample of the working space.”
The characterisation is performed using nine probes; one located at each corner, one in the centre of the working space.
Location of the probes used for characterisation