Ex versions
The Ex versions of flow monitors of type V1 and V15 are designed to be used in ex-
plosive atmospheres. The monitors are approved according to the IECEx certification
scheme as an intrinsically safe apparatus according to standards IEC 60079-0:2007,
IEC 60079-11:2007 and IEC 60079-26:2006.
According to the ATEX directive (94/9/EC) the monitors of type V1 and V15 are
considered as “simple apparatuses” according to EN 60079-11:2006. The monitors
contain mechanical parts that move slowly and with low power input, incapable of
forming hot surfaces or other ignition sources even in cases of rare malfunction. The
ATEX directive is not applicable for “simple apparatuses” or for slow moving mecha-
nical parts with low power input. The monitors have been designed and examined as
simple apparatus according to EN 60079-0:2009, EN 60079-11:2006, EN 60079-26:
2007 and EN 13463-1:2009.
The explosion protection is based on normal atmospheric pressure (0,8-1,1 bar),
normal oxygen content (21 % v/v) and minimum ambient temperature -20 °C. For
maximum ambient temperature see section 1.2 “Specifications”.
Information in the manual concerning our Ex versions will be marked with:
in the margin.
Ex label
Our Ex approved flow monitors wears an Ex label which defines the explosion pro-
tection code and the Intrinsically safe parameters to be used, see picture below with
description.
1. Explosion protection code. All our Ex versions of the V-series are approved for
• ia = Intrinsically safe equipment to be used in Zone 0.
• IIC = Explosion code for flammable and explosive gases; Hydrogen,
acetylene, carbon disulphide
• T? Temperature classification = Indicates the maximum surface temperature
of the equipment. Reference to table 5 in section 1.2 Specifications, for
available Temperature classes.
• Ga = Equipment classified for gases in Zone0.
2. Certificate ID: The type examination code of the equipment.
3. Intrinsically safe parameters of which the flow monitor should be connected. Reference
to 2.7 Electrical installation.
To Next Page
Loading...
Need help?
General
