Instructions Specific To Hazardous Area Installations (Reference European Atex Directive 94/9/Ec, Annex Ii, 1/0/6) - Siemens SITRANS LR400 Quick Start Manual

Instructions specific to hazardous area installations
(Reference European ATEX Directive 94/9/EC, Annex II,
1/0/6)
The following instructions apply to equipment covered by certificate number DMT 01
ATEX E 038:
1. For use and assembly, refer to the main instructions.
2. The equipment is certified for use as Category 1/2 D equipment. The Essential Health and
Safety Requirements are assured by compliance with EN 50281-1-1:1998; Dust Explosion
Protection.
3. The equipment may be used with dust and fibers with apparatus temperature class T. See
table below.
4. Thermal Data:
a. For 7ML5421 Series (Liquids version)
• Permitted ambient temperature at the horn antenna (Category 1D):

- 20 °C
• Permitted ambient temperature at the electronic enclosure (Category 2D):

-20°C
• Maximum permitted temperature within electronic enclosure (Category 1D):
85 °C
Ambient temperature at the
horn antenna (Category 1D)
 
- 20 °C T + 60 °C
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 
- 20 °C T + 100 °C
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 
- 20 °C T + 250 °C
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Page EN-8 SITRANS LR 400 – QUICK START MANUAL

T +250 °C
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
T +65°C
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Maximum surface
temperature at the
horn antenna
(Category 1D)
72 °C
112 °C
262 °C
Maximum surface temperature Category 2D
(electronic enclosure resp. flange)

70 °C at T 65 °C in Category 2
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100 °C independent from T
250 °C independent from T
in Category 2
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in Category 2
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