Siemens SIMATIC MOBY D System Manual page 63

MDS D139 (6GT2600-0AA10)
MDS D124 (6GT2600-0AC10)
MDS D160 (6GT2600-0AB10)
The housing of the heat-resistant data storage unit MDS D139 is made of polyphenylene
sulfide (PPS). The chemical resistance of the data storage unit is excellent. No solvent is
known that can dissolve the plastic at temperatures below 200 °C. A reduction in the
mechanical properties has been observed in aqueous solutions of hydrochloric acid (HCl)
and nitric acid (HNO
The excellent resistance to all fuel types including methanol is a particular characteristic. The
following table provides an overview of the chemicals investigated.
Table 4- 22
Substance
(FAM-DIN 51604-A)
Toluol
1, 1, 1-trichloroethane
xylene
Acetone
Anti-freeze
Brake fluid
Butanon-2 (methyl ethyl ketone)
Calcium chloride (saturated)
Caustic soda (30 percent)
Diesel fuel
Diethyl ether
Engine oil
Frigen 113
Hydrochloric acid (10 percent)
Kerosine
Methanol
n-Butanol (butyl alcohol)
n-butyl acetate
Nitric acid (10 percent)
Sodium chloride (saturated)
Sodium hydroxide (30 percent)
Sodium hypochlorite (5 percent)
Sulphuric acid
(10 percent)
(10 percent)
(30 percent)
MOBY D
System Manual, 01/2010, J31069-D0147-A6-7618
) at 80 °C.
3
Chemical resistance of MDS D139, MDS D124, MDS D160
4.4 Chemical resistance of the MDS
Test conditions
Time Temperature
[days] [°C]
180 80
180 80
180 55
180 120
40 80
180 60
40 80
40 93
180 80
40 23
40 80
40 23
40 80
40 60
180 60
180 80
180 80
40 23
40 80
180 80
30 80
180 80
40 23
40 80
40 23
Planning the MOBY D system
Evaluation
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