Differential Pressure Indicator Type 4.36.1 / 4.36.2 - BOLL & KIRCH Filterbau - #1

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Untitled table.main {} tr.row {} td.cell {} div.block {} div.paragraph {} .font0 { font:6.00pt "Arial", sans-serif; } .font1 { font:11.00pt "Arial", sans-serif; } .font2 { font:13.60pt "Arial", sans-serif; } .font3 { font:16.00pt "Arial", sans-serif; } .font4 { font:23.00pt "Arial", sans-serif; } .font5 { font:9.00pt "Palatino Linotype", serif; } .font6 { font:43.00pt "Palatino Linotype", serif; } m BOLLFILTER \BSSJ Protection Systems application The BOLL Differential Pressure Indi­eator is a robust and compact device indicating the contamination level of the filter éléments. The differential pressure between fil­ter inlet and filter outlet is the meas-urable indieator for the contamina­tion degree of the filter élément. When the preset maximum value of differential pressure is reached, the filter needs to be cleaned. The colour of the dise segments vis­ible in the two displays indicates the contamination degree: The red segment rises proportionally to the level of contamination. When the segment is completely red, the dif­ferential pressure limit is reached. design and opération Inside the device is a plunger which is held in zéro position by a spring. As differential pressure rises with in-creasing contamination, the plunger is displaced against the résistance of the spring. By magnetic transmission the display dise turns according to the movement of the plunger and shows more and more red segments. The setting of the requested differential pressure is effected by factory instal­lation of a corresponding spring. Differential Pressure Indicators with intégral electronic contacts are pro-vided with two switches which can be independently used either as switching contact or alarm contact. At 75% and at 100% of the preset dif­ferential pressure threshold value, BOLL Differential Pressure Indieator TYPE 4.36.1 TYPE 4.36.2 TYPE 4.46.1 TYPE 4.46.2 the contacts of the two reed-switches are activated magnetically. The housing of the Differential Pres­sure Indieator is made of coated die-cast aluminium and for use at an operating pressure of up to 100 bar. In case of type 4.46 the internai parts are made of stainless steel and for use at an operating pressure of up to 160 bar. To avoid the danger of electrostatic charge, the cover glass may only be cleaned with a damp cloth.