Vaisala Optimus OPT100 - Table 16 OPT100 Field Performance; Table 17 OPT100 Calculated Parameters

Property Description/Value
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 16 OPT100 field performance
Parameter
Typical variance to laboratory DGA
1)
Acetylene (C
2
H
2
) ±1 ppm or ±10 % of reading
Hydrogen (H
2
) ±15 ppm or ±15 % of reading
Other measured gases ±10 ppm or ±10 % of reading
Moisture (H
2
O) ±2 ppm or ±10 % of reading
1) Compared with gas chromatography result from an oil sample considering also laboratory
uncertainty. Performance of the gas-in-oil measurement may also be aected by oil
properties and other chemical compounds dissolved in oil.
Table 17 OPT100 calculated parameters
Property Description/Value
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
24 h average Available for single gases, moisture, TDCG, and total gas
pressure
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.
Chapter 6 – Technical specification
95