Emerson Rosemount 3900 Quick Start Manual page 33

November 2020
Specific 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.
5.8 China
5.8.1 Nepsi Intrinsic Safety
Certificate
Standards
Markings
Specific Conditions for Safe Use (X):
1. It is strictly forbidden to rub the plastic shell parts of the product to
prevent the risk of static ignition.
2. When the product shell contains light metals, it should be prevented
in a zone 0 environment.
5.9 Technical Regulations Customs Union (EAC)
5.9.1 EAC Intrinsic Safety
Certificate
Markings
Quick Start Guide
GYB19.1035X
GB 3836.1-2010, GB 3836.4-2010, GB 3836.20-2010
Ex ia II C T4 Ga (–20 °C to +60 °C)
TC RU C-US .MIO62. B.06011
pH/ORP sensors with no preamplifier fitted
Ex ia IIC T4 Ga (–20 °C to +60 °C)
pH sensors with integral smart preamplifier fitted
Ex ia IIC T4 Ga (–20 °C to +60 °C)
ORP sensors with integral standard preamplifier fitted
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
Ex ia IIC T4 Ga (–20 °C to +80 °C)
Quick Start Guide
33