5
Safety Regulations
GB
Model 9010/9020 SIL
1 Safety Regulations
1.1 Correct Use
The Control Unit 9010/9020 SIL, hereafter called control unit, is designed for use as fixed gas
warning device. It is used to monitor industrial premises and installations for combustible, explo-
sive and toxic gases or air/vapour mixtures and for oxygen content.
The control unit provides:
• power for the connected detectors and transmitters
• signal conditioning and display of measured gas concentrations
• alarm thresholds
• outputs for external peripherals (horns, beacons. etc.)
• self-monitoring diagnostics
• 4-20 mA output (not intended for safety related applications).
The unit can be used for:
EX-monitoring: to protect operational plants and workers by continuously monitoring the atmo-
spheres for potentially explosive gases/vapours in air before they reach the lower explosion limit
– activating alarms and initiating risk aversion measures. The control unit is in conformance with
ATEX directive.
OX-monitoring to protect individuals by continuously monitoring the atmosphere for oxygen defi-
ciency or oxygen enrichment or monitoring the inerting of operational plants. The control unit is in
conformance with ATEX directive.
TOX-monitoring to protect individuals by continuously monitoring toxic gas concentrations in the
atmosphere.
If the set limit values are reached; e.g. maximum/minimum concentration in the atmosphere, an
alarm will be activated.
Typical applications are:
• Chemical and petrochemical industry
• Paint and solvent industry
• Gas-processing industry
• Wastewater treatment plants or similar municipal facilities
WARNING!
In case of operation with catalytic combustion detectors: To guarantee the unambiguity of catalytic
combustion detector operation, it must be made sure (e.g. by checking with hand-held test instru-
ments) each time before turning on the detectors and the system that the environmental atmo-
sphere to be monitored by the detectors does not contain dangerous gas concentrations of
combustible gases.
It is imperative that this operating manual be read and observed when using the device. In partic-
ular, the safety instructions, as well as the information for the use and operation of the device,
must be carefully read and observed. Furthermore, the national regulations applicable in the
user's country must be taken into account for a safe use.
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