Appendix
L
94
EDBEPM-H520 DE/EN/FR 4.0
8
Appendix
8.1
Chemical resistance
The following table shows the resistance of the surfaces (keypad, display, touch screen) to the listed
chemicals.
For the keypads EMP-H502 ... EMP-H520, Lenze offers protective foils with an improved resistance
against the mentioned chemical products.
$
$
$
$
Stop!
The surfaces do not resist acidic food (e.g. tomato juice, lemon juice) very well.
We therefore recommend to clean off these marks immediately, otherwise the
surface can be damaged.
Keypad
EPM-H310
EPM-H315
EPM-H410
EPM-H502, EPM-H505
EPM-H510, EPM-H520
Substance
without
protective
foil
with
protective
foil
Acetic acid
≥
5 % < 50 %
#
#
#
☺
Acetone
—
#
#
☺
Ammonia
≥
2 %
—
—
#
#
Benzene
☺
#
#
☺
Benzole
☺
☺
#
☺
Benzyl alcohol
—
—
#
#
Diesel oil
☺
☺
☺
☺
Ethanol
#
#
#
☺
Ethylene glycol
#
#
#
—
Formic acid
≥
50 %
—
—
#
#
High pressure and
temperature > 100 °C
—
—
#
#
Hydrochloric acid
≥
10 %
#
#
#
#
Hydrogen peroxide
≥
25 %
—
—
#
#
Hypochlorous acidic natron
≥
20 %
—
—
#
#
Isopropanol
☺
☺
#
☺
Methanol
☺
☺
#
—
Methylene chloride
—
—
#
#
Mineral acids
concentrated
—
—
#
#
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