Hydac VD 5 C.0 Differential Pressure Indicators

Hydac VD 5 C.0 Differential Pressure Indicators

Product Name: Hydac VD 5 C.0 Differential Pressure Indicators
Product Brand: Hydac
Product Code: VD 5 C.0
Product Artikel: Art.Nr. 306839
VD Differential pressure indicators ·          Max. differential pressure: 420 bar ·          Versions: optical, electrical, optical/electrical, electronic-analogue ·          Typical response pressures: 2 / 5 / 8 bar     1.1   GENERAL   HYDAC clogging indicators are designed to indicate visually and/or electrically when the filter elements must be cleaned or changed. The operational safety of a system and efficient utilisation of a filter element can only be guaranteed if clogging indicators are used. Depending on the type of filter, vacuum, return line or differential pressure clogging indicators are used.   1.2 SEALS   NBR (= Perbunan) or V (= Viton) 1.3 INSTALLATION   Some users install filters without clogging indicators and prefer instead to replace or clean the elements according to a specified time schedule or according to a set number of operating hours. However, this involves some risk. Fitting a clogging indicator has two main advantages:  The operator no longer has to estimate when the element is clogged.  The unnecessary costs of changing the element too early are avoided. All standard filters can be fitted with a clogging indicator at any time, by simply screwing it in. 1.4 DESIGN Return line indicators   These are used for return line and suction filters. In return line filters they react to the increasing static pressure before the filter element, and in suction filters to the decreasing pressure after the filter element, which is caused by increasing contamination.   Differential pressure indicators   These are used for all inline filters and react to the increasing pressure differential caused by increasing contamination of the filter element. The simplest installation of the differential clogging indicator is via G ½Inch cavity (according to HYDAC works standard HN 28-22) The differential pressure indicator type V02 is piped up separately. 1.5 SPECIAL INDICATORS Mobile indicators   These indicators have been developed for special applications and are fitted with AMP Junior Power Timer, AMP Superseal or Deutsch plugs.   ATEX indicators These indicators are used in potentially explosive locations and are subject to the ATEX Equipment Directive 2014/34/EU and the ATEX Operator Directive 1999/92/EG.   UL and CSA indicators Indicators which are exported to the USA and Canada often require classification according to current UL and CSA standards. The UL and CSA symbols are found on many products, particularly in the field of electrical engineering.