Replaceable danfoss water flow switch

Description

KWFS series water flow switch is a flow switch that can be used under the medium temperature of - 20~120 ℃. Its unique housing material allows its working environment temperature to reach - 40~85 ℃, which can meet the requirements of some customers for the use environment. Its IP65 protection level allows it to effectively protect internal components and extend the service life of the equipment.

The working principle is that when the fluid rushes towards the blade, the blade swings, changing the relative position of the magnet and the reed contactor, activating the contactor to make it close or open. Once the fluid is interrupted, the blade returns to its initial position, again activating the reed contactor. The mutual repulsion of the two magnets provides the force required for the flow switch to reset, and the contactor returns to its previous state

Application

Control and monitor liquid flow of boilers, pumps, etc., of heating, cooling, and air conditioning equipment.

Features

● Flow control of water and normal media
● Renovated SPDT micro switch ensures the reliable switch function
●15(8A)250VAC switch rating
● IP65, class I enclosure
● Set point adjustable
● Stainless steel paddle
● Brass material
● Max. liquid temp 120℃
● Max working pressure 20Ba

Specifications

Types of Model

Liquid Flow Rate Table

Note:
①For flow rates with suffix "Z", the 6 inch paddle must be installed.
②The flow rate unit of the above table is GPM (m /h)

Electrical Wiring

Installation

The flow switch can be installed in every position far from elbows or throttlings, with arrow on flow direction. If pipe is vertical, recalibrate range to balance paddle weight. If the device is downwards mounted, take care to slags and apply it in a straight pipe that is far from filters,valves,etc.,with length at least 5 times the diameter of pipe upstream and downstream the unit.

Note:
The flow switch is factory calibrated at its minimum sensitivity.To increase the set valve,turn the adjustment screw clockwise.The cut-out valve must be ≥the minimum flow necessary to guarantee the protection of the plant.

Dimensions (mm)

Paddles

Keram (Nanjing)ELECTRICAL Equipment Co., Ltd.. was found in 1998.

In 2005, the number of the employees increased to more than 100.

In 2006, its manufacturing base was moved to Huai An Industrial Development Zone.

Keram Controls has obtained the investment from Keram Group in 2009.

In 2014, business expands to electrical components and appliance, and changed its name to Keram (Nanjing) Electrical Equipment Co., Ltd.