Signal Conditioner supports load cells and strain gauges.

Press Release Summary:

Featuring 0-30 mV input range, Model 4720 contains precision instrumentation amplifier, 4-20 mA filtered output with frequency response of DC to 10 Hz, and built-in 10 V excitation supply capable of driving 350 W bridge. Connections are made via screw clamp terminal blocks, and Zero and Span adjustment potentiometers are located externally. Measuring 3.78 x 1.06 x 1.65 in., DIN rail mount unit is suitable for conveyor weighing systems, hoppers, or tank farms.

Original Press Release:

Low Cost 4-20mA Load Cell and Strain Gage Signal Conditioner

Calex Mfg. Co., Inc. of Concord, California announces the availability of the Calex Model 4720. The Model 4720 is a DIN Rail mount, self-contained DC powered module designed for load cell, strain gage, or single ended analog amplification and filtering. It contains a precision instrumentation amplifier, filtered output and a built-in excitation supply. The 4720 provides a cost effective solution for applications such as conveyor weighing systems, hoppers or tank farms.

The 0 to 30mV input range makes it compatible with most strain gage based load cell or pressure transducer outputs. The built-in 10V excitation supply is capable of driving a 350 ohm bridge. The filtered output of the 4720 is 4 to 20mA with a frequency response of DC to 10Hz. Connections are made via easily accessible screw clamp terminal blocks. Zero and Span adjustment potentiometers are located externally as well for easy access. Overall dimensions are 3.78"L x 1.06"W x 1.65"H. The 4720 is backed by Calex's five year warranty.

For pricing or more information, contact Calex Mfg. Co., Inc. at 800-542-3355 or fax 925-687-3333. Units are available from stock to 6 weeks. For a complete data sheet on the Model 4720 go to or email

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