In order to select the suitable detector, what materials should be used as sensing elements and wire materials for RTDs?
RTD’s contain a sensing element which is an electrical resistor that changes resistance with temperature. The sensing element in an RTD usually contains a platinum wire or film, a ceramic housing and ceramic cement or glass to seal the sensing element and support the element wire. Typically, platinum sensing elements are able to be exposed to temperatures up to approximately 1200°F. The wires which connect the sensing element to the readout or control instrumentation are usually made of materials such as nickel, nickel alloys, tined copper, silver plated copper or nickel plated copper. The wire insulation used also directly influences the temperature the RTD can be exposed too.
The contingency theory of organization views organizations as rational entities capable and willing to make internal changes to achieve a technical fit between environment and structure. Contingency theory views effective organizations as those having structures that both support the unique nature of their production process and that are customized to complement their environment as argued by Byars & Rue (2004). The goal of an audit is to test the reliability of a company‘s information, policies, practices and procedures. Government regulations require that certain financial institutions undergo independent financial audits, but industry standards can mandate audits in other areas such as safety and technology. Auditors require access to documents, systems, policies and procedures to manage an audit.
According to Daft (2010), audit teams may begin the audit process with meetings where they gather risk and control awareness, after which the field work begins. During the audit process, auditors perform substantive procedures and test controls.
The audit sub processes, particularly in planning and field work, include contingencies such as business type, employee skill level, applicable laws, available audit workforce, available technology and systems, and deadline