SPRIANO SST57B - Definitions and Symbols

OPERATING MANUAL
MN-SST50
ED-17-09
SPRIANO® TECHNOLOGIES - www.spriano.it – spriano@terranova-instruments.com
a TERRANOVA® Srl brand - www.terranova-instruments.com - VAT IT07848810151
Factory & Sales: Via Gramsci 1 – 26827 Terranova dei Passerini (LO) – Italy
Head Office: Via Rosso Medardo 16 – 20159 Milano – Italy Ph: +39 0377 919119 – Fax: +39 0377 855720
Pag. 5/48
1.3 DEFINITIONS AND SYMBOLS
In this manual are used the following symbols and labels
Equipment for use in potentially explosive atmospheres
II 1G
Equipment Group II Category 1G, suitable for potentially explosive Zone 0 area
(gases, vapours or mists) and with redundancy for zone 1 and 2
Ex ia
Equipment protection by intrinsic safety, level of protection "ia"
IIC
Group IIC apparatus, fit for substances of group IIC, IIB and IIA
Temperature Class of the transmitter (maximum surface temperature)
T6,
T5,
T4
 only when used in the ambient temperature range –40°C to 40°C
 only when used in the ambient temperature range –40°C to 55°C
 only when used in the ambient temperature range –40°C to 80°C
Ga
Equipment with equipment protection level (EPL) “Ga”
WARNING!
Warning label, used to warn about hazardous materials, locations, or objects,
including electric currents, poisons, and other things.
PROHIBITION!
Prohibition label, used to indicate something is not permitted.
MANDATORY!
Mandatory label, used to set obligation tasks to be performed by the user.
INFORMATION!
Information label, used to set general information for the user or warn about
hazards for the equipment.