SMART + HART

Why a SMART Consistency Meter?

Analog consistency meters rely on two-point calibration.

A LOW and HIGH sample are introduced to the sensor.  ZERO is set using the LOW sample and the "slope" is set using the HIGH sample.  A straight-line output is generated.  However, the output from these meters is not linear with consistency. 

TWO POINT CALIBRATION ON A CONSISTENCY CURVE

The TEMCO Magic II & III are SMART Instruments.  These two instruments are "pre-calibrated at the factory by introducing torque samples to the sensor.  A lookup table is generated that can duplicate a non-linear curve.  The Smart module then accurately converts it to "True Consistency" over the entire calibrated range of the instrument.

Not just the area near setpoint

This graph shows the curve that is generated using this method and the comparison to traditional two-point calibration.   Now a LINEAR consistency output can be sent to a controller or DCS.

Why HART Protocol?

Tired of climbing, carrying a heavy ladder or putting on safety equipment, just to make a minor adjustment to your consistency meters?

The Fisher-Rosemount™ Model 275 HART * or the NEW ABB Model STT04 Communicator can be used to change many of the parameters of the TEMCO Engineering Magic II & III Consistency Transmitter. These Communicators interface with any HART compatible device via any wiring termination using the 4-20 mA loop.  No more climbing up to the Consistency Transmitter to make Changes.  HART allows you to make span changes, adjust damping and even change consistency curves in the Comfort and Safety of the Rack or Control room. Rosemont 275 communicator ABB STTO-4 Communicator * Highway Addressable Remote Transducer