Schmidt SS 20.500 Ex, Инструкция по эксплуатации

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Instructions for Use SS 20.500 Ex
– Supplement for use ATEX
Page 6
The following standards and rules are useful:
o
EN 1127-1: Explosion prevention and protection - Basic con-
cepts and methodology
o
TRBS series
o
Standards for explosive gas ("G") and dust atmospheres ("D"):
-
EN 60079-14: Electrical apparatus for explosive atmospheres
-
EN 60079-17: Inspection and maintenance
o
Standards for explosive gas atmospheres ("G"):
-
EN 60079-10-1: Classification of explosive gas atmospheres
o
Standards for explosive dust atmospheres ("D"):
-
EN 60079-10-2: Classification of explosive dust atmospheres
4 Application range
The ATEX version of the category 3 SCHMIDT
®
Flow sensor SS 20.500
Ex is designed for stationary measurement of the flow velocity as well as
the temperature of air or gas in potentially explosive atmospheres featur-
ing the following types of protection for:
o
Gases (Zone 2): II 3G Ex ec ic IIC T4 Gc
o
Dusts (Zone 22): II 3D Ex tc ic IIIC T135°C Dc
The sensor is suitable for use in atmospheres with combustible,
conductive dust with a smoldering temperature higher than 210 °C.
Special condition for use ("X"):
o
The main housing of the sensor may only be operated in an
area with a minimum degree of contamination 2, as defined in
IEC 60991-1.
o
This does not apply to the tube-shaped sensor probe (includ-
ing the connecting cable for the remote version).
The permissible operating temperatures are:
o
Electronics : -20 ... +70 °C
o
Sensor probe: -40 ... +85 °C
Electrical datas:
o
Rated voltage : 24 V
DC/AC
± 20 %
o
Rated current: 170 mA
o
Measurement outputs: 0
… 10 V / 4 … 20 mA
Enclosure:
o
Degree of protecion: IP64