Vaisala Optimus OPT100, User Manual, Page: 56 / 78

Property Description
Initialization time to full accuracy Two days
Data storage At least 10 years
Expected operating life > 15 years
1) Three cycles for ethane and hydrogen.
Table 13 Calculated Parameters
Property Description
Total dissolved combustible gases
(TDCG) Combined total of H
2
, CO, CH
4
, C
2
H
6
, C
2
H
4
, and C
2
H
2
Rate of change (ROC) Available for single gases and TDCG for 24 h, 7 d, and 30 d
periods
Gas ratios
1) Available ratios:
• CH
4
/H
2
• C
2
H
2
/C
2
H
4
• C
2
H
2
/CH
4
• C
2
H
6
/C
2
H
2
• C
2
H
4
/C
2
H
6
• CO
2
/CO
1) Calculated from 24 h average values. See standard IEC 60599.
Table 14 Operating Environment
Property Description
Transformer oil type Mineral oil
Required minimum fire point
1)
of
transformer oil
+125 °C (+257 °F)
Transformer oil pressure at oil inlet Max. 2 bar
abs
continuous
Burst pressure 20 bar
abs
Transformer oil temperature at oil inlet Max. +100 °C (+212 °F)
Ambient humidity range 0 ... 100 %RH, condensing
Ambient temperature range in
operation -40 ... +55 °C (-40 ... +131 °F)
OPT100 User Guide M211858EN-E
54