Emerson Rosemount 3900 Quick Start Manual page 31

May 2023
5.6 Europe
5.6.1 ATEX/UKEX Intrinsic Safety
ATEX
certificate
UKEX
certificate
Standards
Markings
Special Conditions for Safe Use (X):
1. All pH/ORP sensor models with a plastic enclosure or exposed
plastic parts may provide an electrostatic ignition hazard and
must only be cleaned with a damp cloth to avoid the danger of
ignition due to build-up of electrostatic charge.
2. All pH/ORP sensor models with a metallic enclosure may
provide a risk of ignition by impact or friction. Care should be
taken during installation to protect the sensor from the risk.
3. External connections to the sensor must be suitably
terminated and provide a degree of protection of at least IP20.
4. All pH/ORP sensor models are intended to be in contact with
the process fluid and may not meet the 500V r.m.s. test to
earth. This must be taken into consideration at installation.
Quick Start Guide
Ex ia IIC; T6; ambient temperature rating –20 °C to +60
°C: (simple apparatus)
Baseefa10ATEX0156X
BAS21UKEX0396X
EN IEC 60079-0: 2018
EN 60079-11: 2012
pH/ORP sensors with no preamplifier fitted
II 1 G Ex ia IIC T4 Ga (–20 °C to +60 °C)
pH sensors with integral smart preamplifier fitted
II 1 G Ex ia IIC T4 Ga (–20 °C to +60 °C)
ORP sensors with integral standard preamplifier fitted
II 1 G Ex ia IIC T4 Ga (–20 °C to +80 °C)
Ex ia IIC T5 Ga (–20 °C to +40 °C)
pH sensors with integral standard preamplifier fitted
II 1 G Ex ia IIC T4 Ga (–20 °C to +80 °C)
Ex ia IIC T5 Ga (–20 °C to +40 °C)
Quick Start Guide
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