SRI TOGA GC
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HID, FID and/or
TCD detectors |
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10-port gas
sampling valve and valve oven |
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Gas extraction
loop |
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Peaksimple data system |
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Built-in standards
preparation module |
By analyzing the
gases dissolved in transformer oil, potential
transformer faults can be avoided. ASTM D3612
provides for identification and quantification
of dissolved gases in transformer oil by GC. The
SRI TOGA GC uses the version referred to as
D3612B, the direct injection technique where the
dissolved gas extraction takes place inside the
GC. This means that other than collecting the
transformer oil in a glass airtight syringe, no
sample preparation is necessary prior to
injection into the TOGA GC.
To achieve the
TOGA analysis, transformer oil is pumped through
the gas extraction loop of a TOGA GC equipped
with HID or HID/TCD detectors. The TCD is
used to quantify the oxygen and nitrogen because
the HID is too sensitive for the large
quantities typically found dissolved in
transformer oil.
In the TOGA GC,
the transformer oil sample is injected by
peristaltic pump through a unique gas extraction
loop. The gas extraction loop consists of
permeation membrane tubing encapsulated in a
trap-heated glass tube. The permeation tubing is
plumbed to the sample inlet, the dual 10-port
valves, and the waste/sample outlet. Solenoid
valves are included for purging the gas
extraction chamber with helium between runs. |
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The
presence and quantities of certain gases
in the transformer oil indicate four
broad types of possible general fault
conditions:
1-Transformer
oil overheating: methane,
ethane, ethylene, and small quantities
of acetylene
2-Partial Discharge:
hydrogen, methane, and small quantities
of acetylene and ethane
3-Sustained Arcing:
hydrogen, acetylene, and ethylene
4-Insulating Paper Overheating:
carbon monoxide and carbon dioxide |
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#SRI-8610-0031-1,
TOGA GC WITH HID (110V) |
$17,495.00 |
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#SRI-8610-0031-2,
TOGA GC WITH HID (220V) |
$17,495.00 |
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#SRI-8610-0032-1,
TOGA GC WITH TCD/HID (110V) |
$20,495.00 |
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#SRI-8610-0032-2,
TOGA GC WITH TCD/HID (220V) |
$20,495.00 |
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Options
& Upgrades: additional detectors,
6 channel USB PeakSimple data system
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