Red Seal Instrumentation and Control Technician Practice Exam 2026 – Comprehensive All-in-One Guide for Exam Success

Question: 1 / 400

Which material is commonly used for pressure sensing diaphragms?

Aluminum

Copper

Stainless steel

Stainless steel is the preferred material for pressure sensing diaphragms due to its exceptional strength, corrosion resistance, and durability. These attributes are critical in pressure sensing applications where the diaphragm must withstand high pressures and potentially aggressive process environments.

Stainless steel provides a reliable barrier against contaminating substances and offers good thermal and mechanical properties, ensuring consistent performance across a wide range of temperatures and pressures. Its ability to retain accuracy over time makes it an ideal choice for high-precision applications in industries such as oil and gas, chemicals, and pharmaceuticals.

Other materials, while they have some uses, generally do not offer the same balance of resilience and performance as stainless steel in the demanding conditions of pressure sensing.

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Plastic composites

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