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TopWorx™ HART 7
The new TopWorx™ HART 7 protocol allows you to gain access to critical operational data as well as diagnostic information for your automated on/off valve package.
TopWorx´s powerful and easy to use HART 7 solution incorporates intelligent features and a robust 4-20mA signal to help you lower operating costs and increase plant availability. Advantages include: quarter turn valves, quarter turn valve indication, indication for pneumatic actuators, ON/OFF valve indication, and ON/OFF valve control.
TopWorx™ HART 7


Device Terminal Voltage
Min: 10.0
Linearity (1/4 Turn)
1% of span
Shaft Rotation
Min: 20°
Operating Temperature Limits
Min: -40°C
Device Resistance and Capacitance
Rx: 27.12k ohms
High (H) Alarm NE-43 Current
Low (L) Alarm NE-43
< 3.5mA
Multi-Drop Current Draw
Lift-Off Voltage


  • HART communication is the global standard for the process automation industry
  • Avoid unplanned shutdown
  • Improve plant reliability
  • Lower maintenance cost
  • Diagnose potential device problems
  • Simple, reliable, and easy to use
  • Local LEDs for open/close indication
  • Third LED for alert status
  • Push button interface for local commissioning and access to primary variable and faults