JW Instruments logo, a Relevant Industrial company, recognized for precision instrumentation and control solutions.

J&W Instruments

Your Partner in Instrumentation and Process Control

Founded in 1972 by Phil Javinsky, J&W Instruments, Inc. has established itself as a trusted provider of instrumentation sales, process control systems (PCS), and process measurement solutions. Initially specializing in field service for the process industries, the company expanded its offerings to include component stocking, assembly, and comprehensive control solutions to meet the evolving needs of its clients. Over the years, J&W Instruments has become a leader in process instrument technology, PCS compliance, and accredited metrological calibration services across the Midwest.

In 2020, J&W Instruments was acquired by Relevant Industrial, LLC, a leader in instrumentation and automation, rotating equipment, purification, and thermal equipment distribution and service. This acquisition has expanded J&W’s capabilities and market reach, allowing them to offer more comprehensive solutions to their clients.

J&W Instruments Product Offerings

J&W Instruments provides a wide array of products and services designed to meet the diverse needs of various industries:

Instrumentation Sales

Process Instruments: As an industry-recognized top representative and award-winning distributor, J&W offers a comprehensive range of process instruments, including temperature, pressure, and flow measurement devices, ensuring precise monitoring and control of industrial processes.

Control Valves: Supplying high-quality control valves suitable for various industrial applications, ensuring reliable flow regulation and process efficiency.

Process Control Engineering

System Design and Integration: Specializing in the design and integration of process control systems, including Distributed Control Systems (DCS), Programmable Logic Controllers (PLC), and Supervisory Control and Data Acquisition (SCADA) systems, to optimize operational efficiency.

Software Programming: Offering programming services for PCS, ICS, DCS, HMI, SIS, PLC, and SCADA systems to ensure seamless operation and control.

Metrology and Calibration Services

A2LA Accredited Calibration Laboratory: Operating an ISO/IEC 17025 accredited laboratory, J&W provides traceable calibration services for a wide range of instruments, ensuring accuracy and compliance with industry standards.

Onsite Calibration Services: Offering field calibration services to minimize downtime and ensure instruments maintain peak performance.

Manufacturing and Repair Services

Thermocouple Manufacturing: Producing custom thermocouple assemblies tailored to specific client requirements for accurate temperature measurement.

Panel Fabrication: Designing and fabricating control panels to meet unique process control needs, ensuring quality and reliability.

Instrument Repair and Maintenance: Providing repair services for a variety of instruments, extending equipment life and ensuring optimal performance.

Commitment to Safety, Quality, and Integrity

J&W Instruments is dedicated to providing superior products and services, emphasizing exceptional customer service and technical support. Our team of experienced professionals works closely with clients to understand their unique needs and deliver tailored solutions that enhance process efficiency and reliability.

Why Choose J&W Instruments, Inc.?

Extensive Experience

Nearly five decades of expertise in providing high-quality instrumentation and process control solutions.

Comprehensive Product Range

A wide array of products from leading manufacturers to meet diverse industrial needs.

Dedicated Customer Support

A commitment to exceptional service and technical support throughout the project lifecycle.

Quality Assurance

High-quality products and services designed to ensure safety, efficiency, and reliability in all applications.

Visit Our Website

For more detailed information about J&W Instruments, Inc. and our offerings, please visit our website at