SICK FLOWSIC500 User Manual

Installation
FLOWSIC500 · Operating Instructions · 8025733/1GMJ/V4-2/2022-07 · © SICK Engineering GmbH 47
Subject to change without notice
Operating conditions for the ultrasonic sensors
The FLOWSIC500 is designed for use in potentially explosive atmospheres solely under
normal atmospheric conditions within the following limits.
– Ambient pressure range 0.8 bar (11.6 psi) to 1.1 bar (15.95 psi)
– Air with normal oxygen content, normally 21 percent by volume
The ambient temperature must be within the range specified on the type plate.
The gas flow meter becomes part of the pipeline as soon as the FLOWSIC500 is installed in
the pipeline.
The walls of the pipeline and the gas flow meter then serve as zone-separating barrier. The
following Figure shows the different situations for a possible application and the operating
conditions that apply.
Fig. 15 Ex zones
WARNING: Risk of ignition through impacts or friction
The ultrasonic transducers of the FLOWSIC500 are made of titanium. The pipe
adapter and part of the electronic enclosure may be made of aluminum.
In rare cases, ignition sources due to impact and friction sparks could occur.
The maximum piezoelectric energy that can be released through impacts on
the ultrasonic transducers exceeds the limit for Gas group IIC specified in
§10.7 of EN60079-11:2012.
▸ For this reason, the ultrasonic transducers may only be used in zone 1
when risks of ignition arising from impacts or friction on the sensor housing
can be ruled out within the application.
▸ Only ultrasonic transducers provided by SICK may be used!
● The pipeline contains a non-
explosive mixture. The gas
mixture can be combustible.
● Gas pressure and gas
temperature can be within the
range specified on the type plate
of the gas flow meter.
Case 2:
● The area inside the pipeline is
classified as potentially explosive
atmosphere Zone 1 or 2.
● The gas pressure must be within the
range 0.8 (11.6 psi) to 1.1 bar
(15.95 psi) (normal atmospheric
conditions).
● Gas temperature must be within the
permitted ambient temperature
range specified by the type plate on
the gas flow meter
Zone 1 or 2
Case 1:
Zone 1 or 2
Non-explosive gas mixture
Zone 1 or 2

SICK FLOWSIC500 Specifications

General

Brand	SICK
Model	FLOWSIC500
Category	Measuring Instruments
Language	English