INFICON MicroFID II Portable Flame Ionization Detector - Manual (Page 26)

074-579-P1A 26
WARNING
Hydrogen storage on the metal oxide is an Exothermic Reaction. The
cylinder may become hot during the initial fill. Care must be taken to avoid
injury.
The hydrogen fuel cylinder (see Figure 7), when full, will provide the MicroFID II with up to 70 hours of
continuous operation in a single fill. To fill the hydrogen fuel cylinder, the MicroFID II hydrogen filling
station Part No. A1201222 is required (see Figure 8). The hydrogen fill station is outfitted with a CGA 350
adaptor for use with a high pressure hydrogen cylinder that contains at least 99.999% pure grade
hydrogen (also known as ultra high purity hydrogen).
CAUTION: H
2
S, SO
2
, Cl
2
, and CO are contaminating substances for the cylinder alloy. Do not expose the
cylinder interior to these substances.
CAUTION: Lower grades of hydrogen will damage the fuel cell with impurities and decrease the overall
longevity of the fuel cell. Ensure the hydrogen is ultra high purity.
CAUTION: Do not modify or alter the hydrogen cylinder or fittings.
WARNING
DO NOT attempt to fill the hydrogen cylinder without a refill adapter..
The Hydrogen Filling Station (Part No.A1201222) consists of an adapter fitting with a left-handed thread
for cylinder attachment, an output valve and a hydrogen fuel cylinder quick connect. The Hydrogen Filling
Station delivers a fixed 260 psi to the hydrogen fuel cylinder. The output valve is positioned to deliver gas
from the cylinder to the hydrogen fuel cylinder. Additionally, in the final stages of filling the hydrogen fuel
cylinder, the output valve is used to release gas held in the quick connect after filling.
The MicroFID II Hydrogen Fuel Cylinder is composed of metal hydride material. The process of filling this
cylinder involves the low pressure adsorption of hydrogen on the metal hydride surface, rather than the
high pressure filling process for conventional hydrogen cylinders. Table 2 illustrates the charge time
versus fill time for the MicroFID II hydrogen cylinder.
A 5 minute charge provides 10 hours of usage. Other charge times versus usage are as follows:
5 minutes 10 hours of use
10 minutes 30 hours of use
30 minutes 50 hours of use
60 minutes
65 hours of use
The hydrogen fuel cylinder is over 85% full after one hour. Thereafter, the cylinder charges more slowly
up to the full 70+ hours.