Site Preparation Instructions
OX-TRAN Model 2/22 Operator’s Manual
A-2
Revision R
MOCON, Inc.
Part Number 140-216
Revision D
7500 Mendelssohn Avenue North
Minneapolis, MN 55428 U.S.A.
Telephone 763-493-6370
SITE PREPARATION INSTRUCTIONS
IMPORTANT!
REQUIREMENTS FOR THE START-UP OF
THE OX-TRAN
®
Model 2/22 SYSTEM
The following must be furnished by the customer before a new OX-TRAN Model 2/22 can be set up. If a MOCON
technical representative will be setting up your system these items must be on site before we can arrange to visit your
plant.
1.
SPACE REQUIREMENTS
- Each OX-TRAN Model 2/22 instrument requires 18 to 24 inches (46 to 62 cm)
of bench space. The instrument is 23 inches (58 cm) deep. The bench should provide additional space to
allow for the required electrical and plumbing connections. The instrument weighs 95 pounds
(43.1 kilograms) the bench should provide adequate support for the instrument.
A printer requires approximately 24 inches (62 cm) of bench space. Benches should be sufficiently large
and strong to accommodate the instrument and printer in close proximity.
2.
ENVIRONMENTAL REQUIREMENTS -
The OX-TRAN Model 2/22 should be operated in an environment
with a stable room RH between 20% and 80% non-condensing, and at an ambient temperature of
22 °C
±
2 °C. It is important to locate the instrument in a relatively stable environment free from drafts and
temperature fluctuations.
3.
POWER REQUIREMENTS
- The OX-TRAN Model 2/22 requires 100 - 240 VAC ± 10% at 50/ 60 Hz.
Maximum power consumption for each instrument is 700 VA (maximum surge). The instrument must be
provided with a quiet computer grade electrical circuit with an isolated ground and an appropriate
grounded receptacle. In the USA a duplex NEMA 5-15R receptacle must be provided for each instrument.
NOTE:
MOCON only provides power cords with instruments configured for 120V.
See the last page of these instructions for details and cautions on
“RECOMMENDED ELECTRICAL INSTALLATION”
4.
OXYGEN -
A cylinder of 99.9% oxygen with a MOCON-approved, stainless steel 2 stage oxygen regulator
is required. A standard “T” size cylinder will provide several weeks of operation.
5.
NITROGEN
- The required carrier gas is a special mixture consisting of 98% nitrogen and 2% hydrogen.
These percentages are not critical, and the actual hydrogen percentage may vary from 1% to 3%. This
mixture is readily available from gas suppliers for a nominal charge in most principal cities. Regulations
stipulate that a hydrogen regulator with left-hand threads be used. (Verify this with your gas supplier.)
MOCON requires that this regulator be a two stage model. A standard “T” size cylinder will provide several
weeks of operation. The carrier gas mixture must contain less than 500 ppm residual oxygen.
6.
REGULATOR ASSEMBLY
- If the customer chooses to purchase the optional regulator assembly, then
the two gas cylinders are the only items that must be supplied by the customer. The regulator assembly
contains everything else that is needed.
8.
COPPER TUBING -
Metallic tubing is required for connecting the oxygen and nitrogen supplies to the rear
panel of the instrument. Desiccated and sealed (D&S), refrigeration-grade copper tubing (1/8 OD x 0.030