What is BS EN 14597 - Temperature control devices and temperature limiters about?
BS EN 14597 is a European standard that discusses temperature control devices and temperature limiters for controlling the supply of energy.
BS EN 14597 applies to electrical or non-electrical temperature control devices which are used to control temperatures within heat-generating systems by controlling the supply of energy. BS EN 14597 also applies to limiting devices which ensure that the temperature in heat-generating systems will not exceed a predefined limit.
BS EN 14597 specifies operating values, operating times, and operational sequences associated with the safety of the heat-generating system.
BS EN 14597 applies to controls with a rated voltage not exceeding 690 V and with a rated current not exceeding 63 A.
BS EN 14597 also applies to manual controls if, electrically and/or mechanically, they form an integral part of automatic controls.
BS EN 14597 applies also to controls incorporating electronic devices, requirements for which are contained in Annex DX.
Note1: BS EN 14597 does not apply to room thermostats.
Note2: BS EN 14597 does not take into account the response value of an automatic action of the control, if such a response value is dependent upon the method of mounting the control in the heat generating system or equipment, in which case the control should be tested together with the heat generator. Where a response value is of significance for the protection of the user or surroundings, the value defined in the appropriate household equipment standard or as determined by the manufacturer applies.
Who is BS EN 14597 - Temperature control devices and temperature limiter for?
BS EN 14597 on temperature control devices and temperature limiters is useful for:
- Temperature control devices and temperature limiters manufacturers
- Devices installers and maintenance personnel
Why should you use BS EN 14597 - Temperature control devices and temperature limiter?
Temperature control devices and temperature limiters provide control and safety cut-out capabilities to protect personnel, products, and machinery against high or low temperatures. These devices are used in process control applications where independent limit switching for over or under temperature is required.
BS EN 14597 has been created for temperature sensing controls for use in heat-generating systems. It might still be useful however to quote it for other applications, either wholly or in part.
BS EN 14597 specifies the functional requirements and tests for control devices that result from their application in thermal installations. These include, for example, time response and safety aspects of those devices which enable the safe operation of the installation.
In order to limit risk in the controlled applications, controls, as specified in BS EN 14597, need to be used. For control, purposes operating controls, and for risk-limiting protective controls need to be used. If a protective control also provides operating control functions, any failure of the operating function or part of the control should not prevent the protective operation of the control. BS EN 14597 covers safety-related aspects pertaining to the operation and inherent safety of operating and protective controls for heat-generating systems.
What is changed since the last update?
BS EN 14597:2012 supersedes BS EN 14597:2005 which is withdrawn.
BS EN 14597:2012 includes some technical changes with respect to BS EN 14597:2005.
These include:
- In Clause 3, the classification of the controls to protective control or operating control was adjusted. If the letter “S” is used in the abbreviation, the word safety will also be used in the associated definition. Contractions between the definitions in Clause 3 and further requirements in the standard, especially in Table AX of the standard were removed
- In Clause 11, the action 2V was adapted to the requirements of the standard content
- In Annex H, the fault modes were adjusted to the existing approaches, a new Annex EX (informative) for characteristics of typical temperature sensors and their fault modes
- Annex J applies to thermistors
- Expansion of footnote 205 for requirement 27; also, the new footnote 208 for the requirement 27 in Table BX.1. The test specification in requirement 27 was clarified