Home > Moore Industries releases next generation of Smart HART dual input temperature transmitters

Moore Industries releases next generation of Smart HART dual input temperature transmitters

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article image THZ3 and TDZ3 transmitters

Moore Industries announces the release of their next generation of Smart HART temperature transmitters offering dual sensor input capability.

Featuring industry-leading durability and reliability combined with several new features that increase usability and functionality, the new THZ3 and TDZ3 two-wire (loop powered) transmitters provide an isolated and linear 4-20mA output proportional to input.

Designed for quick and easy configuration, the new temperature transmitters can accept a direct signal input from a wide array of sensors and analogue devices including 14 RTD types and nine thermocouple types; resistance and potentiometer devices; and direct millivolt sources.

The dual sensor input capability allows the THZ3 and TDZ3 to offer backup and fail-over protection, with either of the sensors or inputs designated as the primary measurement and the secondary input acting as a backup sensor in the event of a primary sensor failure. The dual input feature also enables 15 THZ3 or TDZ3 transmitters to be multi-dropped on one digital HART loop to monitor 30 temperature points, substantially lowering wiring costs.

Dual input sensors in the new Smart HART temperature transmitters deliver additional advantages: Average and Differential measurement to average the two input measurements or select either the differential (A-B or B-A) or absolute difference between the two inputs; High-Select and Low-Select features enabling the transmitter to continuously monitor two separate inputs and designate the highest or lowest input as the source for the analogue output or PV; and Dynamic Variable Mapping permitting the user to assign the input or the calculated result of the inputs to any of the four HART variables (PV, SV, TV and QV) that can be read by any HART-compatible host system.

Device Intelligence in the THZ3 and TDZ3 temperature transmitters represents a series of features for smarter control and monitoring including sensor drift and corrosion detection; smart range alarms; high availability option, and input simulation capability.

The sensor drift and corrosion detection feature checks and alerts users when the sensor is drifting out of a preset range or when the resistance due to corrosion exceeds set parameters.

Smart range alarms with four HART alarms, which are set to any input or calculated input, detect when the variable is within or outside of user preset limits.

The high availability option enables the selection of how the AO behaves when there is an input failure or out-of-range value detected by the transmitter, preventing nuisance alarms on startup or batch process shutdowns.

Input simulation capability allows manual input of a direct or calculated value, essentially allowing a real input to be stimulated and enabling users to test the AO or any HART diagnostic and range alarms.

Key features of the THZ3 and TDZ3 temperature transmitters also include industry-leading input-to-output analogue accuracy of up to ±0.014°C (±0.025°F) utilising sensor matching and trimming over a 100°F span; 20-bit input resolution delivering exceptional input accuracy for all sensor types; patented continuous sensor diagnostics feature eliminating risk of lost production and hours of troubleshooting; advanced RFI/EMI protection and ambient temperature compensation guarding against environmental factors impacting measurement accuracy; and long-term stability providing up to 5 years between scheduled calibrations.

The THZ3 and TDZ3 transmitters are HART 7 compliant with exception-based reporting and dynamic variable mapping. They are HART and DTM programmable with user-oriented basic configuration for fast and accurate setup. The temperature transmitters can also be configured and interrogated on the 4-20mA loop utilising the HART DD via any HART handheld communicator or HART compatible host. Users can also program or monitor the transmitters with any FDT compliant host or program, such as PACTware using the THZ3/TDZ3 DTM. 

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