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Flowserve-Flowserve-Network Controls - HART with DTM

Network Controls - HART with DTM

BRAND: Limitorque

HART® (Highway Addressable Remote Transducer) is a digital communication protocol that is based upon the Bell 202 telephone communication standard. By using FSK (frequency shift keying) to superimpose low level digital signals on top of an analog 4-20 mA signal, two simultaneous communications channels exist. The 4-20 mA signal communicates the primary measured value, and the digital signal communicates additional device information to the plant control system.


  • General Industry
  • Chemicals
  • Water
  • Oil & Gas
  • Power

industry sectors

  • Pulp & Paper
  • Mining
  • Steel & Primary Metals
  • Food & Beverage
  • Corn Wet Milling & Ethanol
  • Other Industries
  • Basic (Organic & Inorganic)
  • Specialty (Fine & Consumer)
  • Biofuels
  • Pharmaceutical
  • Water
  • Waste Water
  • Agriculture
  • Water Management
  • Upstream Exploration & Production
  • Midstream Transportation
  • Downstream Processing
  • Nuclear
  • Conventional Steam
  • Geothermal
  • Combined Cycle
  • Concentrated Solar Power (CSP)
  • Biomass and MSW

Complies with HART Protocol Specification document HCF_SPEC-13 for rev. 7.3

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Design Range

Torque Rating Range: HART field unit can be fitted to all MX and QX/QXM actuators

Features & Benefits
  • Digital signal on conventional 4-20m ADC analog signal
  • 1200 bps binary phase - continuous frequency-shift-keying
  • Master - Slave communication
  • Distances up to 1800 meters/network (up to 15 devices)
  • EDDL (IEC 61804-2, EDDL) with methods for all supported Common Practice & Device Specfic Commands

Network Protocol
HART (Highway Addressable Remote Transducer) was developed by Emerson for the purpose of communicating a digital signal over analog (4-20 mA) input. It is perhaps the most widely used type of digital protocol.

Network Service
Can be fitted to either MX or QX


Flowserve Limitorque offers practical product training at our global automation headquarters in Lynchburg, Va., and our state-of-the-art valve automation center in Houston. Taught by qualified instructors in classroom settings, these three-day courses emphasize hands-on training. Key topics include the principles of actuator functionality as well as actuator setup and commissioning, maintenance and troubleshooting. View available courses and dates.


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