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
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
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.