Carson City, Nev. —Ametherm now offers complete customization of its NTC thermistor probe assemblies to meet a customer’s specific application needs. Assemblies can be designed and built in as little as two weeks, the company said. The devices can be built to customer-specified resistance values, tolerances, beta values, insulation resistance, and dielectric voltage breakdown.
"We can customize our probe assemblies in any way the customer wants — including matching or creating any resistance temperature curve — and we offer the highest isolation voltage available," said Eric Rauch, president and CEO of Ametherm, in a statement.
"The key to making custom probes is to have all the requirements up front, so listening to the customer is imperative. Equally important is flexibility. In some cases three or four design changes will be made, but in the end we create a device unique to each customer that can suit their needs better than an off-the-shelf solution,” Rauch continued.
Using the same specially formulated metal oxide ceramic materials for the NTC thermistors, the custom probe assemblies are available in a variety of housings — ring terminal, flag terminal, steel tube, threaded hex, and threaded long tip — and lead wire gauges and insulation thicknesses. The specially formulated ceramic materials are “extremely accurate in sensing temperature,” making them well suited for high-accuracy temperature sensing applications.
At the end of last year, Rauch said the company was “in a great position for further growth, especially in the temperature sensing market” thanks to the acquisition from Measurement Specialties, along with its new facility (acquired in 2013), sintering oven and network of distributors. Ametherm acquired the SURGE-GARD inrush current limiter product line, formerly manufactured by RTI Electronics, from Measurement Specialties in 2013. It also acquired all of the assets for the NTC disc thermistor, NTC chip thermistor, and NTC surface-mount thermistor lines.
These custom probe assemblies can be used for high-accuracy temperature sensing and measurement for IGBT chips and heat sinks in welding equipment, plasma cutters, air sensors, electric motors, and HVAC systems.
"Ametherm customers utilize our custom probe assemblies in a variety of applications," said Mehdi Samii, vice president of engineering at Ametherm, in a statement. "Their use in monitoring the temperature of heat sinks and circuit boards is critical to thermal management in power supplies, motor drives, and HVAC systems. For welding equipment and plasma cutters, their small size and close proximity to IGBT chips allows for faster, more accurate temperature readings and higher chip performance. Whatever the application, we can create the perfect device to deliver the accuracy you need."