TELEDYNE OLDHAM SIMTRONICS OLCT 80 d, User Manual

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OLCT 80
GAS TRANSMITTER
USER MANUAL
NPO80GB
Revision F.1
7
2.3.2 Differentiating explosion-proof and intrinsically-safe sensors
In addition to different ATEX markings, explosion-proof and intrinsically-safe sensors can also be
distinguished by the color of their sensor pack:
•
Explosion-proof sensor: unpainted stainless steel sensor equipped with a sintered metal
piece (2 and 4).
•
Intrinsically-safe sensor: blue stainless steel sensor equipped with a protective Teflon
membrane (1 and 3).
Figure 3: intrinsically-safe and explosion-proof sensors.
2.3.3 Displays and indicator lights
Item Description
1. Green power indicator light.
2. Orange fault indicator light.
3. Red level 1 alarm indicator light.
4. Red level 2 alarm indicator light.
5. LCD digital display, backlit.
6. Infrared receptor for the signal coming from the
IR20 remote control. See Infrared
remote control on page 11.
7. Level 1 and level 2 alarm icons. The icons blink in the event of an alarm, but changes
to a solid icon once the alarm is acknowledged using the
IR20 remote control.
8. Maintenance/fault icon (sensor, electronic, connection fault etc.).
9. Text field (type of gas, unit, configuration-related text).
Figure 4: front view.