Moore Industries THZ3 and TDZ3 dual sensor temperature transmitters

The THZ³ and TDZ³ 2-wire (loop-powered) transmitters provide an isolated and linear 4-20 mA output proportional to input. They configure quickly and easily to accept a direct signal input from a wide array of sensors and analog devices including 14 RTD types and nine thermocouple types; resistance and potentiometer devices; and direct millivolt sources.

The dual sensor input allows the THZ³ and TDZ³ to offer backup and failover protection, with either of the sensors or inputs designated as the primary measurement and the secondary input acting as a backup sensor in case of a primary sensor failure. Additionally, by utilising this dual input capability, 15 THZ³ or TDZ³ transmitters can be multidropped on one digital HART loop to monitor 30 temperature points.

Another benefit associated with the dual input sensors includes 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 also enable the transmitter to designate either the highest or lowest input as the source for the analog output or PV.

The THZ³ and TDZ³ offer an input-to-output analog accuracy of up to ±0.014°C and feature 20-bit input resolution with high input accuracy for all sensor types.

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 set-up.