Measurement & Control

Established in 1978 to support the ethanol industry, SMAR has expanded its focus to include energy generation, oil and gas, water treatment, food processing, chemical, and other sectors. Our products' reliability and robustness have enabled us to provide solutions for various applications, including nuclear plants and military projects. SMAR offers a broad range of products for industrial automation, covering devices from the control room to field instrumentation. Our products and third-party devices can be integrated using our System-302 (a truly distributed control system).

History of Innovations

SMAR has a long history of innovation in industrial process control and automation. We were the first to introduce a powerful stand-alone multi-loop PID controller that was block-configurable using a rich graphical user interface (GUI) app for PCs. Our library of function blocks was also highly sophisticated.

In addition, we were pioneers in implementing the HART® and FOUNDATION® Fieldbus protocols for field transmitters. Furthermore, we introduced field pressure transmitters that are capable of measuring, totalizing flow, and controlling valves using an internal PID control, all in a single unit. This innovation eliminates the need for an external PID controller in many applications.

Freedom and Safe Cloud

SMAR gives customers freedom of choice by offering a variety of technological alternatives. For instance, with our line of field transmitters, controllers, and positioners, you can select the most convenient communication protocol for your plant. Choose from 4-20 mA, HART®, FOUNDATION® Fieldbus, PROFIBUS®, Modbus, EtherNet/IP™, DeviceNet™, and others. SMAR devices are available with a large variety of measuring ranges, materials, certificates, accessories, painting types, and network connectivity.
Additionally, we offer highly secure cloud storage for your data, and the SMAR System-302 manage all connectivity for seamless integration across your entire plant with a safe backup.

Frequently Asked Questions

NEW Products


The FY500 is a nozzle-reed system positioner with coil. Works with a setpoint signal from a controller or other device.

Easy one touch calibration wizard and


SR301S - Sanitary Remote Seals

Meet different applications such as very high or very low temperatures, areas of difficult access or with too much vibration.

Available as Flanged, Pancake, Threaded, and Sanitary

LD400 - For SIL2 and SIL3 Applications

The LD400 is SIL 2 and SIL 3 certified by TUV in compliance with the IEC 61508-2010 for use at Safety Instrumented Systems (SIS).

Available for Pressure, Level and Flow


Smar junction boxes were especially designed to facilitate fieldbus (FOUNDATION™ fieldbus and PROFIBUS PA), HART®, and conventional instrumentation (4-20 mA) connections.

It is IP66/68 rated enclosure combined with appropriate cable glands, protects the wire connections from dust, water, oil, and moisture.


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Smar International Corporation

6001 Stonington Street
Suite 100
Houston, TX 77040

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