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Loop Indicator / UNICONT PDF/PLK®

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GENERAL DESCRIPTION

The UNICONT series 2-wire passive loop-indicators are universally scalable process value indicators of NIVELCO, operating without the
need for power supply. The process indicators find their use where the process value has no control function (such as switching ON/OFF,
pressure control, etc.). The 3-wire HART® converter type UNICONT devices offer the optimal solution where local displaying is needed
besides the remote data processing and the field transmitters having 4 – 20 mA output are needed to be integrated into HART® multidrop
system. The devices are applicable not only for NIVELCO transmitters, but for all transmitters which use standard 4 – 20 mA output.
The UNICONT PDF devices are digital, 2-wire passive / 3-wire active, field process indicators suitable for indication of temperature, pressure,
level, etc. values with 6 digit SAP-202 LCD display. Explosion proof versions are available for hazardous environments. The HART® capable
UNICONT PDF 3-wire process indicators require additional power supply. Besides displaying the loop current or the process values, these
units convert input current to HART® signals and so enable devices that have analogue outputs only to be integrated into HART® multidrop
systems. Robust enclosure makes applications under harsh conditions also possible. The UNICONT PDF-600 series with flameproof (Ex d)
stainless steel housing meets the special requirements of certain industry segments, such as Food and Beverage, Marine, Oil and Gas.

PRODUCT PROPERTIES

  • Loop operated
  • Operation without external power supply in 2-wire type
  • Field display for transmitters
  • Scalable display
  • 20 mm digit height
  • 4…20 mA to HART® converter version
  • Heavy duty field mountable housing
  • Stainless steel housing
  • Ex flameproof input variants available

APPLICATIONS

  • Universal field indicator for any transmitters
  • Selectable physical parameter set
  • Display of process values supplied by any transmitter
  • If used as HART® converter, powers 2-wire transmitters

SPECIFICATION

Power supply:10–36 VDC
Ambient temperature:−40°C…+70°C
Display:6 digits LCD
Input:4…20 mA
Output:4…20 mA, 4…20 mA + HART®
Ingress protection:IP67
Approvals:ATEX, INMETRO

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