CEMB USA T1-40 ATEX - Manual

SEISMIC VELOCITY TRANSDUCER
T1-40
Measurement of Omnidirectional Absolute Vibrations
Certified according to ATEX 94/9/CE directive
OPERATION
Transducer T1-40 serves for seismic measurement of the absolute vibrations of the machinery through direct fixing
(omnidirectional) on the supports of the vibrating part in a dangerous area. It supplies an output signal directly
proportional to the vibration speed of the point to which it is fastened. Such signal is then processed in a safe zone by
a measuring channel of the “T” series.
The transducer, in its various models, is certified for applications in areas classified as:
ZONE 0 ZONE 1
- Ex II 1GD Ex ia IIC T6 Ex iaD 20 T85°C - Ex II 2GD Ex ia IIC T6 Ex iaD 21 T85°C
- Ex II 1GD Ex ia IIC T5 Ex iaD 20 T100°C - Ex II 2GD Ex ia IIC T5 Ex iaD 21 T100°C
- Ex II 1GD Ex ia IIC T4 Ex iaD 20 T135°C - Ex II 2GD Ex ia IIC T4 Ex iaD 21 T135°C
PRINCIPLE OF OPERATION
A voltage, proportional to the speed of vibration, is induced in a coil suspended seismically to the transducer body
and immersed in a field generated by a permanent magnet rigidly fastened to the transducer body.