Heath Consultants Detecto-Pak 4 (DP) - Manual (Page 15)

FUEL CYLINDERS
100786-0 Rev. D 05/09
8
**NOTE**
When ordering, it is extremely important to specify CERTIFIED. This
helps ensure quality gas. Not ordering CERTIFIED gas increases the risk
of not securing a 40% H
2
(hydrogen)/60% N
2
(nitrogen) mix of less than
(0.5) ppm hydrocarbon background. See Chapter Eight, Section VIII, - A,
Item 2b for example of negative effect.
level (determined by fuel mother tank internal pressure). DO NOT
EXCEED 1750 psig pressure in the fuel cylinder.
8. Open bleed off valve on transfiller to eliminate pressure in
transfiller.
9. Loosen knurled nut with finger pressure and remove fuel cylinder.
10. Remove transfiller from fuel mother tank, replace safety cap or caps,
and safely store fuel mother tank. For storing and transporting of
these fuel mother tanks/fuel cylinders, see Paragraphs D. and E. of
this Section.
C. ORDERING FUEL MOTHER TANKS
When ordering a mother tank of fuel, it is recommended that a certified
mix of 40% hydrogen/60% nitrogen +/- 2% with less than .5 ppm of
hydrocarbon be requested.
The following companies can supply the proper fuel mixtures in fuel
mother tanks. This list is not intended as an endorsement, and other
suppliers may be available. If you are unable to locate a fuel source, please
contact your nearest Heath representative.
SUPPLIERS OF FUEL GAS MIXTURES:
AIRCO SCIENTIFIC GAS PRODUCTS
LINDE MATHESON GAS PRODUCTS
ALPHAGAZ SCOTT SPECIALTY GASES
LIQUID CARBONIC AIR PRODUCTS
MG INDUSTRIES