Thermo Scientific TVA-1000B Instruction Manual - Geotech ...
Thermo Scientific TVA-1000B Instruction Manual - Geotech ...
Thermo Scientific TVA-1000B Instruction Manual - Geotech ...
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Maintenance MI 611-185 – June 1996<br />
Hydrogen Gas Tank<br />
FID instruments are supplied with an 85cc hydrogen gas tank. This tank, which may be pressurized<br />
to 2200 psi maximum at 25°C, will provide 8 hours operation when fully charged.<br />
The tank has an integrally mounted high pressure gauge that can be easily read when the tank<br />
is in or out of the instrument. Install the tank in the instrument by inserting it into the receptacle<br />
on the left side and tightening (left hand threads, tighten counterclockwise) until the<br />
rubber tank boot is flush with the instrument sidepack and a slight resistance is felt. Do not<br />
overtighten.<br />
Fuel Refilling Procedure<br />
WARNING: A safe refill operation means there are no hydrogen leaks. Before any<br />
valves are opened, use a wrench to firmly tighten connections to the hydrogen supply<br />
tanks and the tank fill adapter. If escaping hydrogen is heard during the filling operation,<br />
close all valves and correct the leak before proceeding. Leak test with soapy water<br />
or equivalent.<br />
NOTES:<br />
1. Use prepurified ZERO grade hydrogen (certified total hydrocarbons as methane<br />
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