As a further distinguishing feature, there are also different types of thermowell stems. A thermowell can be either tapered, straight or stepped. The tapered stem shape is the one most commonly used, guaranteeing a short response time and high strength at the same time. Protection tubes usually have the straight stem shape and thus a particularly cost-effective construction. For applications with high process-side loads with strong vibrations, we recommend the WIKA thermowell in a ScrutonWell design .