OSK Turns 40 and Refreshes Its Website
A more useful website for our 40th anniversary
OSK turns 40 in 2026. From our early workshop to the factory today, our work has centred on temperature. We now make mineral-insulated thermocouples, fine-diameter thermocouples and heaters. The products and applications vary, but when a drawing comes in, we still start with the same questions: Where is the sensing point? How will the probe be mounted? What temperatures will it see?
Our 40th anniversary gave us a chance to look back at how we got here. We still have the photo from our early workshop, and our founder, now 76, still works at the factory. We also took the opportunity to reorganise our website so that people new to OSK can find products, explore applications and see what information to bring to a discussion about sensor selection.
The refreshed website is now live at czosk.com.
Start with the measurement you need
If you know what you need, the product catalogue covers mineral-insulated thermocouples, fine-diameter thermocouples and heaters. If you are still choosing a sensor, start with the application guide. How much room does the equipment leave for a probe? Should you measure the workpiece or the temperature near the heater? The answers affect where the probe goes and what information to include in a quote request.
The refreshed site also has dedicated pages for manufacturing and testing, technical resources and enquiry guidance. If you have a drawing, send it with the dimensions and operating conditions. If dimensions are still open, tell us where the sensing point is, how the probe will be mounted and what temperatures it will see.
The work behind the website
A slender MI thermocouple can meet its specified diameter and overall length and still fail to pass through a sleeve. Before making a sample, we need to agree on the insertion-length datum, where the tip should sit and which section needs a straightness check. OSK was granted a Chinese utility model for a thermocouple straightening fixture, a tool for this part of the manufacturing process.
Customers help us understand the conditions on site, and our engineering, production and inspection teams check the details. On our 40th anniversary, thank you to everyone who has worked with us to revise a drawing, test a sample or make a product.
Explore the refreshed website
If you are looking for a probe or have a drawing to discuss, start with the links below. We also welcome feedback on what information would help you.