T425 - Loop Powered Current Transmitter

Contegra's T425 4-20 mA transmitter provides convenient signal spanning of the SLX 130-E Submersible Level Transducer’s process signal over as little as 20% of the sensor’s range.  Additionally the T425 provides three levels of transient protection on the loop.

The T425 has clear artwork for ease-of-use and adjustment for the installing technician.

The T425 accepts a nominal 0-5 VDC input (or portion thereof) and provides convenient calibration to produce a 4-20 mA output proportional to that input.

The T425 is loop powered, 12-28 VDC.  It provides three levels of transient protection on the 4-20 mA loop: a gas tube arrestor for suppression of high voltages, transorbs, and varistors for fast clamping of lower voltage transients.

 The 4-20 mA loop is measurable without interrupting the circuit by inserting the meter’s probes into two jacks on the face of the transmitter.  (The meter needs a burden voltage of 10 mV/mA or less.)

The T425 provides up to 3.8 mA at (nominally) 5 VDC to power the sensor.

Offset is adjustable and Span is adjustable from 20-100% of the 5 Volt range.

Literature

          T425 Sales Literature:     10383-0001-02 T425