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Model Number "N-2401-2" is Bi-Mode Function [Ullage/Temp] Device with Closed [Gas-Tight] construction which has been minor changed from original Semi-Closed construction of Triple Function Device Model "D-2401-2" for use in chemical tank ship.
In case the Chemical tanker for which the Oil-Water Interface Detector is required according to IMO Regulation, and also Closed (Gas-Tight) Device is requested by user, Model number for it becomes "N-2401-2/D-2401-2" in order to model number description approved by IMO.
[The theory and construction of Oil-Water Interface Detector is for detecting oil and water, incase this device is used for gauging in chemical tank, same material does not apply for all kind of chemicals, so it is recommended to use upon checking of chemical's nature against material of sensor. ]
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In case Chemical cargo for which IBC Code Chapter 17, Column "J" requires closed gauging, IBC Code Chapter 13.1.1.3 may require fixed type Tank Level System.
However, MMC Portable Closed [Gas-Tight] Gauging Device shall be accepted to use on Vapor Locks [Tank Gauging Station] installed on tank top as secondary for fixed type Tank Level System and/or cargo survey in direct read-out gauging.
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BCH Code Chemical tank ship, In case Chemical cargo for which BCH Code requires closed gauging, use of Portable Closed Gauging Device shall be accepted by Ship's Classification in accordance with IMO MSC CIRC. 551.
View of Sonic Tape Fitted on Vapor Locks (Tank Gauging Station)
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