VICI 235 Dynacalibrator - Manual (Page 11)

7
Rear Panel Connections
Remove all shipping caps and shipping plugs from the rear panel bulkhead
fittings. All these hardware items should be saved for reuse if the Dynacalibrator
must be stored or returned to VICI.
Fitting locations are identical for all configurations. Fitting holes which are not
used are equipped with blank caps. All connections are clearly marked and
easily identified.
Supply Inlet
All Model 235 Dynacalibrators are equipped with a supply inlet fitting. (Figure 3)
Since there is no internal pump, the supply inlet must be connected to an external
pressurized source of carrier and dilution gas such as an external pump, a cylinder
of compressed gas, etc. The most commonly used gas is dry air; however, dry
nitrogen may also be used.
Note about Model 235 for moisture:
The Model 235 for moisture must have an extremely clean, dry source of either
Air or N
2
. Filters and traps for trace moisture should be used and maintained at all
times to provide accurate low level moisture results. Along with filtration, use only
metallic tubing and high-purity regulator and fittings for the supply of Carrier/
Diluent on all moisture systems.
The pressure of the external gas source connected to
the supply inlet must be at least 25 psig but no more
than 50 psig. High pressure pumps and gas cylinders are
potentially very dangerous. Use extreme care when making
or breaking connections between the Dynacalibrator and
external gas sources.
Getting Started
Figure 3 Dynacalibrator 235 Rear Panel
SAMPLE
IN
STREAM
OUT
SPAN
OUT
CARRIER
OUT
DILUTION
OUT
OVERFLOW CHAMBER
ZERO
OUT
CARRIER
IN
DILUTION
IN
SUPPLY
INLET
VENTS
E-NET
POWER INPUT
FACTORY SUPPLIED SOURCE
24V 6.25A
150W MAX VME