Piston type flow switch NK800 series

Principle structure

The NK800 series mechanical flow switch has minimal pressure loss, good repeatability, and anti fouling ability. The mechanical and electronic parts are completely isolated, making it suitable for small flow economy models. The piston stroke setting accuracy is three times higher than that of the original NK800. With a switch setting scale, there is no need to set it on site. LED displays the switch status, and dual switch output is available for selection. Suitable for liquid or gas media. Online installation, optional casing.

Applicable Medium

• Water and oil

Applicable fields

• Gas liquid dual-use type, industrial automation/mechanical equipment/air compression industry/refrigeration and air conditioning.

Wiring diagram

Installation direction

Technical Specifications

• Setting range: see parameter table for details
• Precision: ± 5% of total range
• Delay: Depending on the switch point, the quantity is 0.5L/min
• Switch setting scale: It is calibrated when the medium is water, the temperature is 20 ° C, and it is installed horizontally.
• Installation position: Medium and temperature changes may have a slight impact on the switch value
• Wiring method: M12 5-core connector, Hausman connector (optional)
• LED display: DC powered LED displays switch status, AC without LED display.
• Output: reed switch, capacity 24VDC/250VAC, 100mA
• Pressure resistance: 50 bar (aluminum type), 100 bar (stainless steel type)
• Average pressure loss of 0.3 bar (at 25L/min)
• Medium temperature: maximum 90 ° C
• Protection level: IP65

Size chart

Attachment – Connectors