MODELS:
MX-9200
Corrosive
atmosphere chambers are designed to subject the test specimen to corrosion
without introducing other contaminants into the test area.
MX-9200 have a test area constructed of all transparent
Lucite which is impervious to the corrosive effects of the salt atmosphere,
and they are designed so that direct visual observation of the item
being tested is available at all times. The base is designed of
stainless steel in order to maintain a laboratory-like quality for the
equipment's finish. All thermostats and other metallic items in
the chamber are monel to avoid any transference and to minimize corrosive
effects. Although the basic chamber was designed to meet military
specifications, including MIL-STD-810, the chamber also is capable of
performing many commercial and ASTM specifications.
Test specimens
are hung or supported within the test area by a number of Lucite rods.
The salt solution reservoir, located within the double wall construction,
is maintained at a preset controlled temperature by a high reliability,
thermostatic temperature controller. The salt solution is introduced
into the chamber through an atomizing nozzle. This nozzle can
be calibrated by to perform salt atmosphere capabilities for MIL-STD-19500B, paragraph
40.8 and other specifications. This specification requires that a salt
residue be deposited on the specimens, in addition to generating salt
fog atmosphere. these salt spray chambers
are entirely self-contained and require only the normal factory utilities
provided by the purchaser. The preparation of a salt solution
consists normally of sodium chloride containing as a dry compound not
more than 0.1% of sodium iodide and not more than 0.2% of total impurities.
This solution is prepared by dissolving five parts by weight of salt
in 95 parts by weight of distilled water. It is important to maintain
this solution at a specific gravity of from 1.023 to 1.037. The
solution is maintained at a controlled temperature of 95°F by the chamber's
own integral temperature control system (temperature is adjustable).
All of these corrosive atmosphere chambers are designed to perform continuous unattended
tests for a maximum duration of 72 hours. For longer term test
programs, the chamber may be equipped with a tower level control and
a salt solution reservoir level control to automatically refill the
system from an external storage tank. This tank is available..
