The opto-isolated current loop preamp works with magnetic speed transducers interrupt galvanic signals riding on the transducer's signal and prevent ground loops. This preamp converts speed transducer output into a 4-20mA output suitable for interfacing with process control units and flow controllers.
The power input on the pulse amplifier accepts 7.5 to 30 Vdc input regulated, with no selecting or adjusting necessary. The circuitry is protected against higher voltages to 50 Vdc. All inputs and outputs are fully protected against short circuits to supply or ground and reverse polarity supply leads.
Download the opto-isolated current loop preamp spec sheet:
The Model 4029 opto-isolated preamp fits an Elby elbow enclosure adaptable to a wide array of magnetic speed transducers.
CHARACTERISTICS:
| Frequency Range: | Up to 100 kHz (depending on target mass and velocity) |
| Sensitivity: | 0 to 30 mVpp or 1 to 12 mVpp |
| Temperature Range: | -40 105° C (-40 to to 220° F) |
| Output: | 4-20mA current sink or 10-50mA current sink |
| Power Input: | 4 - 40 Vdc |
Opto-isolated current loop preamps are necessary in areas where speed transducers are subjected to electrically noisy environments.