Cryogenic Storage Vessels CHRONOS®120/220/420
6
Caution! The positive pressure relief and seal-off
device protects the vacuum room from overpres-
sure. Re-evacuation may only be carried out by
•manufacturer’s skilled staff
The protective cover (2) intercepts the valve insert
(1), when there is overpressure existing in the vacu-
um room.
•Do not remove the protective cover (2).
•Protect the valve from heat as well as cooling, as
brittleness results in the loss of the operating vacuum.
CHRONOS®
120 CHRONOS®
220 CHRONOS®
420
Total geometrical capacity 151 251 415 l
Geometrical capacity below the
storage shelf (LIN reserve) 21 35
57 l
Geometrical capacity above the
storage shelf (cubic capacity) 130 216
358 l
1decimetre filling height corre-
sponds to
21 35 57 l
Operating overpressure 0 0 0 bar
Empty weight 100 175 225 kg
Outside diameter 560 710 900 mm
Inside diameter 514 664 854 mm
Storage height 625 625 625 mm
Operating height (upper edge of
the vessel with open cover) 1045 1070
1070 mm
Total height 1150 1180 1190 mm
Roller diameter 80 80 Mm
Static rate of evaporation
(measured with gas phase stor-
age)
2,3
3,5
2,0
5,0
1,5
≈6,2
%/d
l/d
Holding time (LIN Reserve) 4,5 58 d
3.2 Structure of the Vessel
3.2.1 Combined Positive Pres-
sure Relief and Seal-off De-
vice
