Flow Switches

A flow switch, also known as a flow sensor or flow indicator, is a device that monitors the flow rate and pressure of liquids, air, or other gaseous media via a duct, system, or loop.

These switches or sensors may be set to measure flow during a specific time or to monitor overall flow continuously. Thus, a flow metre or indicator is not necessarily a true flow "switch"; if the device merely records and displays data, it is more properly referred to as a metre or indicator.

In most cases, they will initiate actions or stop/start other system components, such as pumps, to alter the flow rate and pressure to the necessary and intended levels. This is a true flow switch.

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615 - 622 - DIY Flow Switch

Description An Ideal DIY flow switch for domestic showers and water pumps. Supplied complete with compression fittings, one metre of three core cable and SPDT (C/O) contacts.  Suitable for water applications up...

F Series Paddle Flow Switch

Description The F Series flow switch is a tough but highly sensitive paddle flow switch suitable for a wide range of flow control applications in both hot and cold liquids....

CM2K Paddle Flow Switch

Description 4 x paddles supplied with each switch Suitable for pipe sizes from 25mm to 200mm (1" to 8") 1"BSP threaded pipe fitting All stainless steel option Easily adjusted by...

CRG Paddle Flow Switch

Description The devices function via the principle of a paddle supported by a metal bellows, and the triggering of a micro switch. Suitable for pipe sizes from 1" to 7.5""...

C25 Series Flow Switch

Description  The C25 inline flow switches are versatile magnetically actuated normally off flow switches that switch on in response to a selectable flow. They are ideal for a multitude of...

UR3K - G-A Paddle Flow Switch

Description Reed switch rated at 250Vac/50VA Sizes from 3/8″ to 2″ BSP 3 to 62 l/min adjustment ranges Brass or stainless steel bodies Up to 25 bar system pressure Temperatures...

FM Series Paddle Flow Switch

Description The FM series fl ow switch is built tough for the most arduous industrial and mining applications. It is a rugged but highly sensitive paddle fl ow switch suitable...

P25 Series Flow Switch

Description The P25 inline flow switch is a rugged versatile all position mounting flow actuated switch that can detect the flow of liquids in 15mm (1/2″) to 25mm (1″) diameter...

HD1K - HD2K Flow Switch

Description Nominal Pipe Sizes 8-25mm 0.1 - 80 l/min switching range 1/4" - 1" BSP threaded connections Pressure 200 bar (500 bar option) Brass or Stainless Version Viscosity Compensated Version...

UM3K - G-A Paddle Flow Switch

Description Microswitch rated at 250Vac/5A Sizes from 3/8″ to 2″ BSP 3.5 to 76l/min adjustment ranges Brass or stainless steel bodies Up to 25 bar system pressure Temperatures up to...

Limit Value Switch GS 125

Description Limit value switches of the series GS125 are used in switch cabinets for process monitoring or for simple process regulation. Both temperatures and derived variables such as voltage, current...

OMNI-C1 Counter

Description Momentary value indicator and totalisation Pulse output with adjustable pulse per volume Antivalent outputs Analogue output of the momentary value Simple guided menu via graphics display Technical Datasheet Downloads...

HR1MV Flow Switch

Description Nominal Pipe Sizes 32-50 mm 2 – 220 l/min switching range 1-1/4″ to 2″ BSP threaded connections Pressure 200 bar (500 bar option) Brass or Stainless Version Optional visual...

FX Plastic Flow Switch

Description For 15 mm Pipe Size 0.4 -12 l/min switching range 1/2″ BSP Male Threads Built In Filter 10 bar max Pressure Normally Open Reed Switch Rated 250Vac/10VA Technical Datasheet...

FWJ GM Flow Switch

Description Nominal Pipe Sizes 8-20 mm 1 – 16 l/min switching range 1/4″ to 3/4″ BSP threaded connections Pressure 100 bar Brass Body Mechanical Visual Display Technical Datasheet Downloads Technical...

FW4V Flow Switch

Description For 15mm Pipe Size 1 l/min switching point 1/2″ threaded connections Pressure 300 bar Bi-directional flow switching Viscosity compensated Technical Datasheet Downloads FW4V Inline Piston Flow Switch Datasheet

HD1F - HD2F Flow Switch

Description Mechanical flow switch, for fluid or gaseous media, with spring-supported piston and magnetic triggering of a reed switch. Robust construction in brass or stainless steel. Nominal Pipe Sizes 8-25mm 0.1...

MR1K Piston Flow Switch

Description C/O reed switch rated at 250V/50VA Sizes from 1/4″ to 1″ BSP 0.4 l/min to 60 l/min adjustment ranges Brass or stainless steel body 200 bar maximum system pressure...

FW1-GM Flow Switch

Description 1/4″ – 1″ BSP Threaded Connections 1 – 11 l/min Switching Range Economical design High switching power Insensitive to dirt Media temperature -20..+90ºC Suitable for water (oil on request)...

Safety Barrier 9001

Description Safety barriers of the series 9001 can be used for varied applications in the area of the automation. They allow the intrinsically safe mode of a HART transmitter, actuator,...

Resistance-Transmitter RT 500

Description RT500 transmitter converts a resistance- or potentiometer signal into industry standard signals. Initial and final value may be in the range of 0..100 kOhm. Easy programming by means of...

Level Sensor LS10

Description The LS10 liquid level transmitter is designed for economical and reliable performance in a wide variety of level measurement applications. The LS10 provides a signal output of 4-20mA and...

Level Sensor LK10

Description LK10 have been designed as cost-effective level transmitters for continuous level measurement especially in contaminated and aggressive liquids. Because of the flush ceramic diaphragm both transmitters are well suited...

Level Sensor IL10

Description The IL10 intrinsically safe level transmitter is designed for use in a wide variety of level measurement applications. For installation in hazardous areas when used with the appropriate intrinsically...

OMNIPLUS-F Flow Transmitter

Description Flow transmitter for water and other liquids with integrated temperature measurement Fast response timeIntegrated volume meter with preset Measuring method without moving parts, no wear Stainless steel material coming...

Configuration Interface ECI-3

Description The ECI-3 configuration interface enables connection of GHM HONSBERG sensors to the USB port of a computer. All sensors of the OMNI, FLEX, and LABO families, as well as...

OMNI F Flow Transmitter

Description Flow sensor operating on the calorimetric principle 4 – 20mA output with 2 x user adjustable switch-points All stainless steel with no moving parts Very fast response times for...

NO - NOK Flow Indicator with Switch

Description 1/4″ to 1″ BSP sizes Visible flow scale in l/min (water) Up to 50 bar pressure Ideal for use with dirty/dark liquids May be mounted in any position with...

NJ - NJV Flow Switch - Indicator

Description Female thread 1/4″ to 1″ BSP 2-80 l/min measuring range Multi viscosity scale For dark and/or contaminated liquids Good repeatability Dirt resistance Viscosity Stabilised version (NJV) Technical Datasheet Downloads...

MF20 Series Flow Switch

Description The MF20 micro flow switch is a super sensitive version of our popular P20 in line flow switch. The MF20 is a very simple and reliable mechanical flow switch...

MF Miniature Flow Switch

Description For 3 mm Pipe Size 1-100 Nl/min switching point 100 l/min max flow M5 threaded connections Pressure 6 bar For Air or Gas Technical Datasheet Downloads  MF Inline Piston...

MF 007 Flow Switch

Description For 7 mm Pipe Size 0.05 -1 l/min switching range 2 l/min max flow M10x1 threaded connections Pressure 6 bar Technical Datasheet Downloads MF007 Inline Piston Flow Switch Datasheet

HR2K2 Flow Switch

Description Nominal Pipe Sizes 32 – 50mm 15 – 80 l/min switching range 1-1/4″ – 2″ BSP threaded connections Pressure 200 bar (500 bar option) Brass or Stainless Version Optional...

HR2K1 Flow Switch

Description Nominal Pipe Sizes 32 – 50mm 10 – 150 l/min switching range 1-1/4″ – 2″ BSP threaded connections Pressure 200 bar (500 bar option) Brass or Stainless Version Optional...

UM3K..V Paddle Flow Switch

Description Nominal pipe sizes up to 80mm 10 – 268 l/min switching range Welded Connection (others available) Brass or Stainless steel wetted parts Low Pressure Loss User Adjustable Switch-Point SPDT...

G GR Flow Switch

Description Adjusted to switch between 0.015 and 0.4 l/min H2O Sizes from 1/4″ to 1/2″ BSP Low pressure loss design Bronze body Reed switch rated at 250Vac/1A 50VA Can be...

FW3 Flow Switch

Description For 8mm Pipe Size 0.4 – 2.5 l/min switching range 1/4″ threaded connections Pressure 100 bar Brass or Stainless Version Technical Datasheet Downloads FW3 Inline Piston Flow Switch Datasheet

FM GR Flow Switch

Description 1/4″ – 1/2″ BSP Connections 0.4 – 12 l/min switching ranges 20 l/min max flow Medium Temperature -20ºC – 90ºC Female thread Fixed switch point High pressure duty Good...

FF GR Flow Switch

Description 1/4″ – 1-1/2″ BSP Connections 0.4 – 90 l/min switching ranges 150 l/min max flow Medium Temperature -20ºC – 110ºC Female thread Fixed switch value High pressure duty Good...

F29 Programmable Flow Switch

Description The F29 MK2 programmable fl ow switch is available in various configurations to suit specific applications. Trailing wire versions for flows containing entrained solids are also available. Multi Voltage...

F25 Paddle Flow Switch

Description The F25 series flow switch has been specifically developed to fill the need for a flow sensor, capable of working reliably in applications in which metal flow switches fail....

MR Flow Switch

Description Nominal Pipe Sizes 8 – 25mm 0.4 – 60 l/min switching range 1/4″ – 1″ BSP threaded connections Pressure 200 bar Brass or Stainless Version Optional visual display Technical...

FS Series Switch - Sensor

Description 10 LEDs to display the current flow and adjusted switching limits Possibility of setting the switching limits (insensitivity band preset) Electrical connection by means of M12, 4-pin connector Continuous...

VD 500 Flow Meter

Description The integrated, precise differential pressure sensor measures the differential pressure/ dynamic pressure at the sensor tip. The pressure depends on the respective gas velocity. The flow is therefore easy...

LABO XF Flow Transmitter

Description A very versatile reliable flow switch using a dynamic diaphragm made of stainless steel, which covers the whole cross section of the pipe and is deflected by the flow,...

P20 Series Flow Switch

Description The P20 In line Flow Switch is a simple and reliable flow switch that can detect the flow of liquids or gases in tubes and small diameter pipes. For...

C15 Series Flow Switch

Description The C15 in line flow switch is a compact magnetically actuated piston flow switch that switches in response to low fluid flows. They are ideal for many types of...

HM1K - HM2K Flow Switch

Description Mechanical flow switch, for fluid or gaseous media, with spring-supported piston and magnetic triggering of a microswitch. Robust construction in brass or stainless steel. Nominal Pipe Sizes 8-25mm 0.4...

FW1-GP Flow Switch

Description 1/2″ – 1″ BSP Threaded Connections 1 – 11 l/min Switching Range Economical design High switching power Insensitive to dirt Media temperature -20..+90ºC Suitable for water (oil on request)...

TW Series Trailing Wire Switch

Description The TW Series heavy duty flow switches use a flexible stainless wire sensor rather than a conventional paddle to sense flow. They are suitable for sensing flow in open...