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8024019/AE00/V1-0/2019-02| SICK
A D D E N D U M T O O P E R A T I N G I N S T R U C T I O N S | FWE200DH
Subject to change without notice
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IMPORTANT INFORMATION
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Important information
1.1
About this document
This Addendum is only complete in combination with the Operating Instructions of the
FWE200DH measuring system. Availability and knowledge of the Operating Instructions of
the FWE200DH are assumed.
These Instructions apply to FWE200DH equipped with the water back purge WBP at the
factory.
The valid Operating Instructions (OI) contain basic information on safety, measuring
procedure, design, function and usage of the measuring system and its components and
therefore only supplementary information is provided where necessary to understand the
function. This Addendum is therefore only be to used in conjunction with the valid
Operating Instructions.
1.2
Main hazards
Observe the following hazards in addition to those described in the Operating Instructions.
NOTE:
Always read the Operating Instructions before starting work! Be sure to observe all
safety and warning information in the Operating Instructions!
WARNING: Health risk due to leaking measuring gas
During maintenance work on the sample gas probe there is the possibility of leaking of
potentially hazardous measuring gas.
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Take suitable protective measures according to the hazard potential evaluated by the
operator.
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Wear personal protective equipment.
WARNING: Health risk due to formation of new compounds
New compounds may be formed during heating in the thermal cyclone due to the pro-
cess gas composition.
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The respective ignition temperature must be taken into account for each potentially
arising substance compound. The heater temperature of the thermal cyclone and the
heated extraction hose may have to be limited accordingly.
Example ammonium nitrate:
During start-up, the operating temperature of the heating tapes must be set to max.
220 °C; the sample gas temperature (TGas2) should not exceed 140 °C. Set the
thermostat safety switch-off to 240 °C.
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Other substance mixtures may require different heating band temperatures.
NOTE:
The operator must ensure that no leaks occur in the system.
The operator is responsible for assessing possible hazards through leaks.
