Oldham olct 80, User Manual

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5
– Wireless Version
61
Chapter 5 | Wireless Version
Purpose
The OLCT 80 is available in a wireless version that may be appropriate in the
following situations:
■
Data transmission over long distances.
■
Gas detection on moving equipment (e.g., crane bucket).
■
Situations where wiring would be problematic, if not impossible (e.g., across
a road, waterway or railway).
■
Situations in which installation costs would be prohibitive.
The OLCT 80 communicates with the central measuring controller or PLC via
2.4 GHz radio waves in Europe or 900 MHz in the US over a distance of up to
3200 or 9600 meters, respectively, under free-field conditions.
Concept
The wireless OLCT 80 transmitters (A) communicate between one another until
the signal reaches a master receiver (B), which is connected to the MX 43
central controller (via an RS485 Modbus connection). This master receiver is
used to manage a mesh network of up to 49 OLCT 80 transmitters.
Figure 44: mesh network topology.