Application Area; Specific Conditions Of Use ("X" Identification); Additional Instructions For Safe Operation - Vega VEGAPULS C 21 Manual De Usuario

combustible materials of explosion groups IIA, IIB, IIC and IIIA, IIIB, IIIC.
The VEGAPULS C 21, C 22, C 23 are suitable for applications requiring category 2G (EPL Gb)
instruments.
The VEGAPULS C 21, C 22, C 23 are suitable for applications requiring category 1D (EPL Da)
instruments.
The VEGAPULS C 21, C 22, C 23 are suitable for applications requiring category 1/2D (EPL Da/Db)
instruments.
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Application area

Category 2G (EPL Gb instruments)
The VEGAPULS C 21, C 22, C 23 with the mechanical fixing element are installed in hazardous
areas of zone 1 requiring category 2G (EPL Gb) instruments.
Category 1D (EPL Da instruments)
The VEGAPULS C 21, C 22, C 23 with the mechanical fixing element are installed in hazardous
areas of zone 20 requiring category 1D (EPL Da) instruments.
Category 1/2D (EPL Da/Db instruments)
The VEGAPULS C 21, C 22, C 23 with mechanical fixing element are installed in hazardous areas
of zone 21 requiring instruments of category 2D (EPL Db). The mechanical fixing element, process
connection element is installed in the separating wall, which separates areas requiring instruments
of category 2D (EPL Db) or 1D (EPL Da). The sensor measuring system is installed in hazardous
areas of zone 20 requiring instruments of category 1D (EPL Da).
5 Specific conditions of use ("X" identification)
The following overview is listing all special properties of VEGAPULS C 21, C 22, C 23, which make
a labelling with the symbol "X" behind the certificate number necessary.
Electrostatic charging (ESD)
You can find the details in chapter " Electrostatic charging (ESD)" of these safety instructions.
Ambient temperature
You can find the details in chapter " Thermal data" of these safety instructions.
Impact resistance
The VEGAPULS C 21, C 22, C 23 have been subjected to the test according to the standard corres-
ponding to a low degree of mechanical hazard (4J).
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Additional instructions for safe operation

•
For process pressures outside the standard atmospheric conditions of 80 kPa (0.8 bar) to
110 kPa (1.1 bar) additional requirements can be valid.
Connection conditions
•
For fixed installation, the connecting cable is suitable for an operating temperature range of
-40 ... +80 °C. The temperature at the connection cable may be +90 °C for max. 10000 opera-
ting hours.
•
For flexible installation, the connecting cable is suitable for an operating temperature range of
-25 ... +80 °C. The temperature at the connection cable may be +90 °C for max. 10000 opera-
ting hours.
•
If necessary, a suitable overvoltage arrester can be connected in front of the VEGAPULS C 21,
C 22, C 23
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VEGAPULS C 21, C 22, C 23 • Dust protection by enclosure "t"
ATEX