Introduction Part of the SmartLine® family of products, the SmartLine STT850 is a high-performance temperature transmitter offering high accuracy and stability over a wide range of process and ambient temperatures. The SmartLine family is also fully tested and compliant with Experion ® PKS providing the highest level of compatibility assurance and integration capabilities. SmartLine easily meets the most demanding needs for temperature measurement applications. Best in Class Features: Industry leading performance
o Digital Accuracy up to +/- 0.10 Deg C for RTD
o Stability up to +/- 0.01% of URL per year for ten years
o 125 mSec update time for single input models
o 250 mSec update time for dual input models Reliable measurement
o Built in Galvanic Isolation
o Differential / Averaging / Redundant / Split Range measurements
o Dual Compartment Housing
o Sensor Break detection
o Comprehensive on-board diagnostic capabilities
o Full compliance to SIL 2/3 requirements.
o Available with 15-year warranty
o Supports Namur 107 Extended Diagnostics (FF)
o Supports Namur 89 Wire break
o Direct entry of Callendar-Van Dusen coefficients R0, α, δ and β for calibrated RTD sensors (not available on DE units) Figure 1– Smartline STT850 Temperature transmitter Lower Cost of Ownership
o Universal input
o Dual sensor option
o Multiple local display capabilities
o Modular construction
o External zero, span, & configuration capability
o Polarity insensitive loop wiring
o Digital Output Option (only available with HART)
Communications/Output Options:
o 4-20 mA dc o Honeywell Digitally Enhanced (DE)
o HART ® (version 7.0)
o FOUNDATION™ Fieldbus compliant to ITK 6.1.2
All transmitters are available with the above listed communications protocols.
