HART Protocol is the leading communication technology used with smart
process instrumentation today. The HART Protocol continues to grow in
popularity and recognition in the industry as a global standard for
smart instrument communication. More than two-thirds of all smart instruments
shipping today communicate using the HART Protocol.
HART is field-proven, easy to use and provides
highly capable two-way digital communication simultaneously with the
4-20mA analogue signaling used by traditional instrumentation equipment.
Unlike other digital communication technologies,
the HART Protocol provides a unique communication solution that is backward
compatible with the installed base of instrumentation in use today.
This backward compatibility ensures that investments in existing cabling
and current control strategies will remain secure well into the future.
Designed to compliment traditional 4-20mA analogue signaling, the HART
Protocol supports two way digital communications for process measurement
and control devices. Applications include remote process variable interrogation,
cyclical access to process data, parameter setting and diagnostics.
data items Standard in every HART device
Status & Diagnostic Alerts;
Variables & Units;
Current & % Range;
& Device Tag;
Standard commands provide easy access
not necessary (or desirable) to get this data;
Increases control system integrity
early warning of device problems;
capability of multi-variable devices;
track and detect changes (mismatch) in Range or Engineering Units;
PV and Loop Current values at control system against those from
HART is Safe, Secure, and Available
and Accepted global standard;
Supported by all major instrumentation manufacturers;
Saves Time and Money
Plant Operation and Product Quality
and commission devices in fraction of the time;
communications and diagnostics reduce maintenance & downtime;
or no additional cost by many suppliers;
process variables and performance indicators
device status for early detection of warnings and errors
capability ensures easy integration with plant networks
Protects Your Asset Investments
with existing instrumentation systems, equipment and people
benefits to be achieved incrementally
need to replace entire system
For more information, visit the HART site at: http://www.hartcomm.org
Our HART Modems can be bought online, visit the HART Expert shop.