Hydac 306866 VM5D.0/V-L24 Clogging Indicator

Early warning pressure devices protect the hydraulic circuit from contamination, alerting the operator that the filter element is near capacity and must be changed. The clogging indicator is typically set to trip at 1-bar (14 psid) below the filter bypass setting, to allow the operator sufficient time for element change-out. Available in visual, combo electrical/visual, as well as an extensive list of other options and certifications. A comprehensive offering of clogging indicators ensures that any application can be accommodated. Leadtime: 84 Days ARO Specifications Type Differential Pressure Clogging Indicator Style Differential Indicator Model Code Description VM5D.0/V-L24 Type of Indication Visual Indicator & Electrical Switch Weight 0.33 lb150 g Trip Pressure / Range 5 bar72 psi Note for Trip Pressure / Range Standard, for use on pressure filters, except DFDK & DFZ Max Operating Pressure 210 bar3000 psi Thread G 1/2 Degree of Protection IP 65 (Only if the connector is wired and fitted correctly) Housing Material Aluminum Medium Mineral Oil Maximum Torque 24 lb·ft33 N·m Industry Standards/Certifications ATEX, UL and CSA®US BUn EA Short Description Electric switch and Visual (light - 24 VDC, 110 VAC) Division HYDRAULIC AND LUBE FILTERS Product Group Family INDICATORS-DIFFERENTIAL Product MISCELLANEOUS H&L Clogging indicators are warning devices that signal visually and/ or electrically that the filter element is filled with contaminants and should be changed or cleaned. These devices activate (trip) when the flow of fluid causes a pressure drop across the filter element that exceeds the indicator setting. In filters that incorporate bypass valves, contaminated fluid will bypass the element if the operator does not respond to the indicator warning signal within a reasonable time. In non-bypass filters, if the indicator warning is not heeded, the pressure across the filter will build up to the point where system performance is degraded, the element fails, or the system relief valve is actuated. The indicator is set to trip well before the element becomes fully clogged (14 psid / 1 bar lower than bypass), thereby giving the operator sufficient time to take corrective action. The indicator warning may be a visual signal at the filter site (pop-up button, light, etc.); or, some form of signal at a remote location (trouble light, sound alarm, etc.). In some critical applications, where contamination is intolerable, the signal from the indicator may be used to shut down the system so that personnel must immediately service the unit. Some users install filters without indicators, preferring instead to change and/or clean elements according to a fixed time schedule - or based on number of hours of operation. There is some risk in utilizing this approach. It may be difficult to establish a reliable schedule for installing new elements because the rate of dirt ingression is not known, and, in fact, may vary from time-to-time and from machine-to-machine. Use of a clogging indicator has two main benefits: first, it eliminates the need to guess when the element will clog; second, it avoids the unnecessary cost of replacing elements too soon.