Underwriter’s Laboratories is one of the world’s premier safety testing and certification sources. Many applications require UL approval for insurance and/or other compliance purposes. There are several areas of interest, but the most applicable is UL 508, the Standard for Industrial Control Equipment. For more information on UL, check their Web site at www.ul.com.

Madison Company offers many sensors with UL approval. Those product approvals are to a specific design. Some modifications to an approved design may cause the approval to be invalid. Should that be a critical issue for you, contact us to determine what course of action would be best.

Canadian Standards Association (CSA) tests products for compliance to national and international standards and issues certification marks for qualified products. Certification marks tell potential users that a product has been evaluated by a formal process involving examination, testing and follow-up inspection, and that it complies with applicable standards for safety and performance. CSA is recognized throughout Canada as the premier certification organization for electrical products. For more information on CSA, visit their Web site at www.csa-international.org.

As with UL approval, CSA certification is design-specific. Therefore, modifications to a certified design may cause the certification to be invalid. Please confer with Madison Company if this certification is crucial for your application.

The 15 member nations of the European Union (EU) have created a set of product-specific regulations with which those companies doing business in those nations must comply. The EU’s "New Approach Directives" constitute its unified set of health and safety regulations, symbolized by the CE mark. The mark is required for a broad range of products, including machinery, medical devices and electrical/electronic products. Madison Company self-certifies all of its level switches to CE specifications EN60730-1 and EN60730-2, and Low Voltage Directive (72/73/EEC).

NSF International sets standards for products and systems related to public health, safety and the environment with focus on the essential elements of water, food environment and air. The NSF Certification programs are accepted and frequently mandated by public health regulators throughout the United States, as well as internationally. Madison Company offers over 30 NSF-approved sensors which meet NSF Standard C-169 – Food Equipment and Related Products, Components and Materials. For more information on NSF, visit their Web site at www.nsf.org.

Certain Madison product models have been tested and approved by Underwriters Laboratories, Inc. for use in hazardous locations. The liquid level switch product is normally approved as a recognized component to be used with a UL Listed component in hazardous locations for Class I, Groups A, B, C and D; Class II, Groups E, F and G; and Class III. Visit www.ul.com for more information.

Certain Madison product models have been tested and approved by CSA International for use in hazardous locations. The liquid level switch product is normally approved as a Class 2258 02 Process Control Equipment for hazardous locations classified as Class A, B, C and D; Class II, Groups E, F and G; Class III. For more information on CSA, visit their Web site at www.csa-international.org.

ATEX Directive 94/9/EC (also known as ATEX 95 or ATEX 100A) is used in the European Union (EU) to test and certify products designed for use in potentially explosive atmospheres. Madison's liquid level switch products would normally fall under Equipment Group II, Equipment Category 2, for atmosphere group G, zones 0, 1 and 2. For more information on DEMKO, visit their Web site at www.demko.dk.

FM Approvals are intended to verify that the product will meet stated conditions of performance, safety and quality. The purpose of FM Approval Standards is to present the criteria for FM Approval of various types of products as guidance for Factory Mutual personnel, manufacturers, users and authorities having jurisdiction. Madison Company products having this approval reference would require the purchaser to contact Madison Company for the specific class of product approval.