Safety Test Criteria; Hydrogen Gas Tank - Thermo Scientific TVA2020 Instruction Manual

Preventive Maintenance

Hydrogen Gas Tank

Safety Test Criteria

Hydrogen Gas
5-4 TVA2020 Instruction Manual
the flat side is facing up. Then, insert the charger plug into the appropriate
wall outlet.
The charger has three LEDs. The left most LED indicates power status.
When green, the charger is ready to charge a battery. Orange or Red
indicates a problem with the charger and should not be used.
Once the instrument is connected to the charger the center LED will light.
The light will initially turn orange for 5 to 10 seconds while measuring the
temperature of the battery. If the battery temperature is within the charging
limits then the light will turn green. If the light turns red the battery may
be too hot or too cold and will not charge until the proper temperature is
reached. If you are sure the temperature is correct then either the battery or
charger is defective.
After the center LED turns green the charger tests the battery to determine
the correct charge state. The right most LED will illuminate as defined
below to indicate the charge state.
Orange – Constant current charge state
●
Orange/Green alternating – Constant voltage (90% full charge)
●
Steady Green – Fully charged
●
Red – Indicates the charger or battery is defective and should not be
●
used.
Normal charge time for a fully discharged battery is approximately eight
hours, or approximately one hour of charge for every hour of use.
The battery can be charged while the instrument is ON and running. It
takes approximately 14 hours to fully charge a battery with the instrument
running.
Do not leave the battery on charge for extended periods (greater than 96
hours). If you wish to remove the battery from the TVA2020 for charging
or swapping with a spare battery, turn the instrument off.
The lithium-ion battery packs are designed to meet all U.S. Department of
Transportation (DOT) criteria, per: UN Manual of Tests and Criteria Part
III sub-section 38.3, T1, T2, T3, T4, T5, T7. This is currently pending.
FID instruments are supplied with an 85cc hydrogen gas tank. This tank,
which may be pressurized to 2200 psi maximum at 25×C, will provide ten
Tank
hours operation when fully charged. The tank has an integrally mounted
high pressure gauge that can be easily read when the tank is in or out of the
instrument. Install the tank in the instrument by inserting it into the
receptacle on the top and tightening (left hand threads, tighten counter-
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