CX-FS-HF Flow Switch

    GENERAL

    The HF series of flow controller is ideal for locally indicating the flow of homogenous clean liquids. Adjustable switches generate alarms once switching points are reached.

    The units are robust. Several variants are available to suit a wide variety of applications.

    FEATURES

    The HF inline flow controller is suitable for horizontal or vertical pipes. It has flanged connections, sizes anging from DN15...DN65 or from ?...2?". The measuring tube and connection is made of 304 (or 316L) stainless steel.

    TYPE

    HF1

    thread connection 3/4" ~ 2 1/2" NPT

    suitable for horizontal or vertical pipes

    a linear scale

    one or two alarm positions

    messuring system 3 or 5

    HF2

    flange connection DN15 ~ DN50/65

    suitable for horizontal or vertical pipes

    a linear scale

    one or two alarm positions

    messuring system 3 or 5

    HF3

    flange connection DN80 ~ DN200

    suitable for horizontal or vertical pipes

    a linear scale

    one or two alarm positions

    messuring system 7

    Measuring Principle

    A hinged measuring disc moves freely in the axis of a tapered tube (DW 181, DW 182 only). At flowing conditions, the system adjusts so that the force acting on the disc is in equilibrium with the spring force. Each flow rate thus corresponds to a particular position of the indicator and simultaneously actuates the limit

    switches.

    4.1 messuring system 3                                4.2 messuring system 5

    This is used for large nominal pipe diameters (HF3, HF4 only). It is similar to system E but does not require a nozzle.
 

    Flow Range Tables

    Indicator

    The HF series off low controller(see figure),Scale marking options l/h,l/min,m3/ h,very easy reading. It has been made specifically for the instrument and tested on a calibration rig. Switching points can be changed during operation.