Instrument Calibration Services

Instrument Calibration & Repair

Process Instrument Calibration
JM Test Systems is dedicated to providing high-quality services for our products in your applications.


Recycle Process Instruments
Let us take your old process instrumentation equipment off your hands and we will refurbish or replace with new.


Replacement part of process instruments
We can replace minor parts on your process instrumentation equipment. Parts in stock.


Refurbished Instruments
JM Test Systems is a true service company. We take the time to refurbish your equipment to save you money.

Portable Pressure Generation System
See how our portable pneumatic pressure calibration system can make your job easier.

Instrument Calibration and Repair

Our corporate office is located in Baton Rouge, LA along with our Baton Rouge Calibration Laboratory, this facility also specializes in the repair and certification of process instrumentation.

Our lab is ISO/IEC 17025 accredited by A2LA so you are guaranteed the highest quality of calibration services. We provide timely service and completion to all of our customers. All parts are refinished and repainted. We can save you money through fast turnarounds and money-saving repairs! 25% off calibration on all new sale gauges.

Complete disassembly, cleaning, and decontamination of gauges and seals.

All gauges calibrated to manufacturer’s specifications, re-boxed, and labeled ready to return to your stock.

We have stock on new & refurbished gauges with NIST calibration.

Cleaning and epoxy coating for chlorine service. Cleaning for oxygen service available.

Pick up and delivery service available upon request in some areas.

Calibration and Certification available on all types of process instrumentation, the services and repairs we offer at JM Test Systems include:

  • Analog Gauges
    • O2 cleaning
    • Calibration/Repair
    • Glycerin, silicone, and halocarbon filled gauges
  • Chemical Seals
  • Transmitters
    • Electric
    • Pnuematic
  • Relief Valves
    • Set to specific pressures
  • Remote Filled Systems
  • Hydro Pumps
  • ISO Rings
  • Pressure Hose Testing

Refurbished Process Instruments

Buy Refurbished: Process Instrument and Test Equipment at bargain prices!

Every instrument refurbished to manufacturer’s specifications.

All test instruments calibrated to manufacturer’s specifications and supplied with calibration data.

  • Gauges
  • Transmitters
  • Manifolds


All parts refinished and repainted.

Rebuilt manifolds and transmitter are up to 60% less than the cost of new.

Refurbished gauges cost 50% less on average than new gauges.

We will send out notices for retest 1 to 2 months in advance to keep equipment in compliance.

We can keep stock of your equipment!

Transmitters and manifolds to be refurbishedRebuilt manifolds and transmitters

Replacement Services during Instrument Calibration

Inspection and Replacement of Minor Parts

Full Reconditioning of Your Equipment

  • Gauges
  • Transmitters
  • Manifolds
  • Pressure Switches
  • ISO Rings
  • Diaphram Seals
  • Capillary Seals
  • Relief Valves
  • Chemical Seals

Saving you money by utilizing surplus!

Replacement parts for instrument calibration

Recycle Services

Trade in your old equipment as credit towards new instrumentation equipment.

Great solution for the budget minded as well as an ecological option.

  • Gauges
  • Seals
  • Transmitters
  • Manifolds

Barrel furnish service: We will put bins at your location to put your recycled equipment in then pick up and repair/replace the equipment in bins. Let us pick up so you don’t have to.

Buy Back Program: Make your used test equipment and process instruments a valuable asset!

Trade-in: Get Cash or credit towards purchase, calibration or rental equipment.

  • Call us today 800-353-3411 to see how our Buy Back Program can work for you.
Recycle Process Instruments

Instrument Calibration,
Repair, New & Used Sales:
Request for Quote

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Learn more about our Calibration and Repair Service.