Current Sensors, Transducers, and Switches
by Kathryn Tomiello
Wednesday, April 25, 2007
The AcuAMP series comprises current sensors, transducers, and switches. The transducers come in split-core and fixed-core models. They have jumper-selectable current input ranges and industry standard 4 to 20 mA or 0 to 10 Vdc outputs. Ideal applications for the ACT series current transducers include remote monitoring and software alarms. Using portable data loggers and motor status display is easy with split-core models. The series has a magnetically isolated input to eliminate voltage drop.
The ACTR series current transducers combine a current transformer and a True RMS signal conditioner into one unit. Available with 4 to 20 mA output, ACTR current transducers use True RMS technology for accuracy on distorted waveforms such as VFD or SCR outputs.
The AcuAMP series also includes current operated switches with LED status indication. The series combines a current transformer, signal conditioner, and limit alarm into one package. Models are fixed-core and split-core. ACS150 switches are ideal for monitoring or proof of operation applications. The ACS150 has an adjustable set-point range of 1 to 150 A and universal, solid-state outputs.
The ACS200 series current operated switches come with three jumper-selectable input ranges for more precision in set-point adjustment. Standard features include isolated solid-state relay outputs, multiple input ranges, and split-core or fixed-core models.
The ACSX series current-operated switch has a field-adjustable time delay feature to minimize trips from high inrush or short overload conditions during start-up and operation. The switches are ideal for applications where precision is critical. The adjustable start-up/delay timer is field adjustable from 0.2 to 15 seconds. The ACSX series is available in either normally open ac or ac/dc outputs. The switch acts as an electronic proof-of-operation by detecting current draw changes in motors when they encounter problems. The ACSX series switch also gives a quicker response time than Class 10 overload relays
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