Spike & Profile Temperature Sensors — Piercing Probes and Furnace Survey

Spike and Profile Sensor Insertion Style

Spike and profile work often starts with the physical insertion style. Pointed piercing-probe geometry supports compact push-through measurement for process validation, profile checks, and localized internal temperature readings.

Profile & Spike Sensor Types

Push-Through Spike Thermocouple

A pointed-tip MI cable thermocouple, often specified as a piercing probe, is designed to be pushed through foam, food product, insulation, packaging, process loads, or other materials to measure internal temperature during a process cycle. It uses a pointed sensing tip, a rugged sheath or MI cable body, and the termination style required by the test setup.

Furnace Survey Thermocouple

Survey thermocouples are used for AMS 2750 Temperature Uniformity Surveys (TUS) and System Accuracy Tests (SAT). Type K, N, or noble-metal R/S constructions are selected according to AMS 2750 Tables 1 and 2. Bayonet or compression fittings make installation easier at survey grid points. A NIST-traceable calibration certificate is required for each survey element.

Process-Load Temperature Checks

Piercing probe geometry is useful when the important temperature is inside the product, insulation, packaging, or test load rather than only at the surrounding air or equipment surface.

Survey Thermocouple Requirements

Calibration Certificate Requirements

AMS 2750 and CQI-9 require that all survey thermocouples have a current NIST-traceable calibration certificate documenting the actual error at calibration temperature(s). Thermometrics issues calibration certificates with every thermal-profile survey assembly. Certificates include sensor serial number, calibration date, reference standard traceability chain, and individual junction error at all test points. Recalibration service is available on returned assemblies.