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File MR11766(Sp) Vol. 1 Sec. 2 Page.1 Issued: 1995-01-26 and Report Revised: 20034-0-97-29 DESCRIPTION PRODUCT COVERED: UNLISTED COMPONENT (NOT FOR GENERAL USE) Liquid level probes. Form No. 7842 followed by 8 or 9, followed by 0 or 1, followed by 2 or 3, followed by 00 to 14. Form No. 8468, followed by 9, followed by 0 or 1, followed by 1, 2, 3, 4, 5, 6, 7 or 8, followed by 01 through 17 or 99. Form No 8472900 followed by 00 to 16. j Form No. 84739 followed by 0 or 1, followed by 0 to 7, followed by 00 to 17 or 99. Form No. 8463 followed by 9, followed by O to 9, followed by 0 to 9, followed by 00 to 99. Form No. 857080 followed by 9, followed by 0 to 9, followed by 0 to 9, followed by 00 to 99. Form No. 84739 followed by 8 or 9, followed by 0 to 7, followed by 00 to 17. To= No. 837230---, 330020-33 GENERAL: vol. 1Z of this Procedure file must be used as a supplement to this descriptive section. It contains information concerning components and constructions in this section. ENGINEERING CONSIDERATIONS (NOT FOR FIELD REPRESENTATIVE'S USE): These probes are for use in Class I, Group D hazardous locations when connected to the intrinsically safe outputs of the Applicant's Listed liquid level gauge/leak detection system. The probes detect the level of petroleum products in underground storage tanks. The accuracy of these devices has not been investigated. Form No. 8468 is identical to Form No. 8473 is the nameplate color and the circuit code stored in the probe's memory. Form No. 857280 is a vacuum sensor designed to monitor and control the vacuum level in the interstitial space of secondarily contained tanks. Form No. 330020-= is a sheet metal bracket with up to four vacuum sensors Form No. 957280 secured with screws. Use - For use in the Manufacturer's control, monitoring and auxiliary equipment where the suitability of the combination is determined by Underwriters Laboratories Inc. Conditions of Acceptability - A11 tests are required in the end-use application.