Voith BTS-Ex - 1 Possible Applications, BTS-Ex Characteristics; Use as Safety Device in Potentially Explosive Atmospheres

BTS-Ex, non-contacting thermal switch unit
Possible Applications, BTS-Ex Characteristics
Installation and Operating Manual / Version 7 / 3626-019600ex en / Protection class
0: public / 2020-07-15
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1 Possible Applications, BTS-Ex
Characteristics
The non-contacting thermal switch unit (BTS-Ex) is a monitoring system for Voith
turbo couplings.
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The BTS-Ex provides easy monitoring of the turbo coupling temperature.
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In case of excess temperature, dependent on the application,
- the operator can be warned,
- the drive motor shutdown can be initiated,
- the load on the driven machine can be reduced.
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If excess temperature is identified in time, the discharge or loss of coupling filling
through the fusible plugs can be avoided.
Downtimes are reduced.
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After the turbo coupling has cooled down, the BTS-Ex resets automatically.
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The BTS-Ex can be used for Voith turbo couplings from size 366.
1.1 Use as safety device in potentially explosive
atmospheres
The BTS-Ex can be used in potentially explosive atmospheres as safety device to limit
the maximum permissible surface temperature of the turbo coupling. An ignition
protection level IPL1 (SIL 1) is reached in a low requirement rate.
WARNING
Explosion hazard
When the permissible surface temperature is exceeded, there is the risk of
explosion.
•
In case of excess
temperature, the drive motor has to be switched off within
the specified time ( installation and operating manual of turbo coupling).
The following electrical equipment belongs to the whole system:
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Switching element (will be fixed to the turbo coupling)
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Initiator to evaluate the switching element
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Evaluator with safety-related function.