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PRESYS
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Instruments
1 - Introduction
1.1 - Description
PRESYS DMY-2011, 2035 and 2036 Indicators are microprocessor-based
instruments that show all kind of industrial process variable, such as: temperature,
pressure, flow and level. They have non-volatile internal memory (E2PROM) to store
calibration values. Their high accuracy is warranted by autocalibration techniques
based on high thermal stability voltage reference.
They can communicate with computers by optional communication module
RS-232 or RS-422/485.
The Indicators are able to monitor two universal standard inputs and accept
direct connection of thermocouples, RTD, current (mAdc) and voltage (mVdc, Vdc).
Thermocouples and RTD inputs are linearized automatically by tables stored in
EPROM memory. A 24Vdc voltage source isolated from output and with short-circuit
protection is provided for transmitter power supply.
The type of input selected by the user is enabled by jumpers and by the
software configuration. All configuration data can be protected by a password system
and are stored in the non-volatile memory in case of power failure.
According to modularity design concept, the instruments accept up to four
output modules. The type of outputs are: retransmittion, SPDT relay, SPST relay and
solid state relay. The outputs are isolated from the inputs.
They accept 90 to 240VAC or 130 to 340VDC (with any polarity) power supply.
The equipments have extruded aluminum case which avoids electrical noise,
electromagnetic interference, radiofrequency interference, etc. and their robust
construction makes them tough enough for the most hostile environments.
Figure 1 - DMY - 2011 Indicator front panel
DMY-2011, DMY-2035 and DMY-2036
Introduction
Page 1
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