T773

TRANSPAKTM T773 Frequency Input, Isolating Field Configurable Two-Wire Transmitter www.DataSheet4U.com Provides an Isolated Current Loop in Proportion to a Frequency Input Description Benefits Eliminates Ground Loops Digitally-Synthesized, Field Configurable Ranges (105Hz to 18kHz) Wide Ranging Zero and Span Adjustability Direct Magnetic Pickup Input Velocity/Flow Applications Protects Equipment with 1000VRMS Isolation The T773 isolating two-wire transmitter has 5 input ranges and 2 output ranges, all of which are field selectable via top-accessed DIP switches. The T773 can accept square, triangle or pulse waveforms up to 18KHz with amplitudes from 10mVrms to 35V peak-to-peak. The T773 provides 1000Vrms of transformer-coupled isolation with outputs of either 4-20mA or 10-50mA. Current outputs are in proportion to a selected frequency input. The T773 has 30% zero “turn-up” and 80% span “turn-down” adjustments within any user-selected input range. For example, Range 3 of Table 1 specifies 0 to 2100Hz with a minimum span of 420Hz (2100Hz - 420Hz = 1680Hz, or 80%). This 80% adjustability allows the user to field calibrate the unit for the maximum range of 0 to 2100Hz down to the minimum range of 0 to 420Hz. The maximum obtainable offset is 30% of the calibrated span: a calibrated range of 0 of 1000 Hz can be offset by 300Hz (e.g., 300Hz to 1000Hz). Application The T773 is useful in any application requiring isolation of a 2-wire loop current from a pulse output transducer, su...