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SIGMA DATA ACQUISITION SYSTEM
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- Portable rugged data acquisition modules
- Plug in or screw terminal sensor inputs
- Fast set-up in portable applications
- Modules support a wide range of sensors
- Industry standard RS485/RS232 communications
- IP55 rated with -20ºC to +70ºC operating
temperatures
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The Sigma remote data acquisition system features small,
portable remote measurement units which can be distributed over a wide area and
connected via an RS485 high speed network - reducing
the cost of transducer cabling at the same time as ensuring the integrity of the
measured results. The system consist of a number of different modules suitable for a range of standard
input sensors and a computer interface-network power supply unit. Up to 99 Sigma
units can be connected to a single RS485 network over a combined length of 1Km.
The hub of the system is the 381a interface, which converts the RS485 into RS232
for connection to a PC and provides DC power for all the Sigma modules on the
network. Only the 312a unit requires local power to supply programmable
transmitters.
Modules are networked over two-pair cable and the network connections are made
using plugs and sockets for ease of installation. Each module has a connection
for a local display to assist in the set up process.
The communications protocol ensures that all channels on the network will be
returned to the PC every second. The data is of the highest integrity as it is
digitised at source with full series mode noise rejection.
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SIGMA MODULE SELECTION TABLE
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DATA ACQUISITION SYSTEMS
