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Reference Manual MAS2600: Intrinsically Safe Installation
Ed 21 December 2014
30
Intrinsically Safe Installation
The MAS2600 is designed for use in an approved intrinsically safe installation. The amplifier is fitted
with a label describing the IS category:
Relevant intrinsic safety certificates to be supplied with the system units.
The certification of electric apparatus as intrinsically safe requires the apparatus to be designed and
tested in accordance with approved drawings and the apparatus to be installed in accordance with
approved block schematic diagrams.
Item Explanation
S/N Serial number - production year
Ex identification according to guideline 94/9/EC (ATEX)
II Equipment group II
2(1) Sensor mounted in zone 0 and amplifier in zone 1
Ex ia Denotes the type of protection intrinsic safety, i.e. the system is incapable of
causing ignition in normal operation or with any combination of up to two
faults applied. This category will be adequate for use in zone 0, 1 and 2.
IIC Denotes the group of gases
T4 Denotes the maximum surface temperature classification specified (T4: 135 C)
Tamb Denotes the minimum and maximum ambient temperature.
When calculating ambient temperature the effect from external source of heat-
ing shall be included.