ABB TZIDC is a digital valve positioner with a local interface that control a pneumatic actuator using a two-wire 4-20 mA, Foundation fieldbus or Profibus signal. The instrument offers universal design for linear or rotary actuators, ease of retrofit in place of existing analog positioners, either single-acting or double-acting.
TZIDC positioner controlls control valve or other device through their actuator position. Input signal is converted to pneumatic output affecting required actuator positioning.
Input signal can be either:
Positioners are widely used in process industries such as:
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