Selection of platinum resistance chips

In accordance with clause 5.3.6 of the SH/T 3005-2016 Specification for the Selection and Design of Automation Instruments in the Petrochemical Industry, coil-type or wound-type platinum resistance temperature sensors (RTDs) are recommended, while thin-film platinum resistance chips are not recommended. This is because coil-type or wound platinum resistors have the following advantages: 1. Higher precision and stability: Coil-type or wound platinum resistors offer higher precision and stability compared to sheet-type platinum resistors, enabling more accurate and reliable temperature measurement results. 2. Better vibration and shock resistance: The coil-type or wound-type platinum resistor structure is more robust, enabling it to better withstand vibrations and shocks, making it suitable for harsh environments that may exist in industrial settings. 3. Wider linear range: Coiled or wound platinum resistors have a broader linear range over temperature, allowing them to be used in a wider variety of applications. In summary, the SH/T 3005-2016 standard recommends the use of coil-type or wound-type platinum resistance chips, mainly because they offer higher precision, stability, resistance to vibration and shock, as well as a wider linear range. .