Siemens sitrans LR 400 Guide Rapide page 10

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
amb
≤ ≤
- 20 °C T
amb
≤ ≤
- 20 °C T
amb
Page EN-8 SITRANS LR 400 – QUICK START MANUAL
≤
T +250 °C
amb
≤
T +65°C
amb
Maximum surface
temperature at the
horn antenna
(Category 1D)
72 °C
+ 60 °C
112 °C
+ 100 °C
262 °C
+ 250 °C
Maximum surface temperature Category 2D
(electronic enclosure resp. flange)
≤
70 °C at T 65 °C in Category 2
amb
100 °C independent from T
250 °C independent from T
in Category 2
amb
in Category 2
amb
7ML19985QN83