Weight transmitter
HI 2201LT Hardy Process Solutions

The Hardy Instruments HI 2201LT comes sealed and potted to withstand typical industrial environments It has a course zero offset adjustment to remove dead load, a fine zero adjustment to compensate for small differences between load cells/ points, and a span adjustment to set the operating range for the "live load."

The transmitter produces a current limited, 5 VDC excitation voltage which powers the load cell/point momentarily at the rate of about 90 times per second and converts the signal read into a 4-20 mA output. The transmitter is used primarily in level by weight and force measurement applications.

The HI 2201LT system may be calibrated with a "live load" (product weight) as small as 35% of load cell capacity when one 2mV/V, 350-ohm load cell/point is used. A full 4-20 mA output may be achieved using four 3mV/V, 350 ohm load cells/points when the "live load" exceeds 65 % of the total system load cell capacity.