KROHNE SMARTSENS ORP 8150 Ex EN - Manual (Page 7)

DEVICE DESCRIPTION
2
7
SMARTSENS ORP 8150
www.krohne.com 07/2014 - 4003048502 - MA SMARTSENS ORP 8150 R02 en
2.3 Flammable products
Atmospheric conditions
An explosive atmosphere is a mixture of air and flammable gases, vapours, mists or dusts under
atmospheric conditions. It is defined by the following values:
T
atm
= -20...+60°C / -4...+140°F and P
atm
= 0.8...1.1 bar / 11.6...15.9 psi
Outside of these ranges, for most mixtures no key figures are available for the ignition
behaviour.
Operating conditions
Outside of atmospheric conditions you cannot apply to the explosion protection according to
directive 94/9/EC (ATEX) – regardless of the zone assignment - due to the lack of key safety data.
2.4 Equipment category
The sensor is designed in category II 1 G for use in zone 0.
For more information see the chapter entitled "Flammable products".
DANGER!
The operator is responsible for ensuring that the sensor is operated safely as regards
temperature and pressure of the products used. Include the sensor in the periodic pressure
tests of the plant when operating with flammable products.
INFORMATION!
Definition of zone 0 according to EN 1127-1:
An area with a constant, long-term or frequent explosive atmosphere with a mixture of
flammable substances in a form of gas, vapours or mist with air.
.book Page 7 Friday, July 11, 2014 2:56 PM