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Piston Inline Flow Measurement

Piston inline flow measurement has many benefits including free mounting position, small number of components, high operating pressures, setpoint adjustability and no need for an external power supply.
The measuring principal of piston inline flow measurement uses a spring loaded piston that is displaced by the flow stream. The displacement increases with flow and can be used to actuate a switch or indicate flow rate.

Piston Inline Video Demo
Piston Inline Flow Switch with optional indicator

The GHM Honsberg MR flow switch has an adjustable setpoint, is available in either brass or stainless steel bodies
& is suitable for use with water, oil, air and gases.
  • Function: Flow switch with optional indication
  • Electrical Data: Reed switch change over, 250 V AC 1.5A 50 VA
  • Basic Data: PN200 bar, tmax = 120°C
  • Process Connections available: G1/4 - G1 female thread brass / stainless steel
  • Flow Range: 0.4-60 l/min H2O
Piston Inline Flow Switch

The GHM Honsberg FW1 Mechanical Flow Switch is suitable for liquid or gaseous media, with spring-supported
piston and magnetic triggering of a reed switch. Rugged design in plastic or brass. The FW1 features minimal
pressure loss, good repeatability, high switch capability, dirt-resistance and hermetic separation of mechanical
and electrical components
  • Function: Flow switch
  • Electrical Data: Reed switch n.o. 230 V AC 0.5A 50 VA
  • Basic Data: PN 10-100bar , tmax = 90°C
  • Process Connections available: G1/4 - G1 female thread plastic / brass
  • Flow Range: 1-11 l/min H2O
Piston Inline Flow Switch

The GHM Honsberg FW3 Mechanical Flow Switch for liquid or gaseous media, with spring-supported piston
and magnetic triggering of a reed switch. The FW3 features a rugged design brass, good repeatability,
high switch capability & hermetic separation of mechanical & electrical components
  • Function: Flow switch
  • Electrical Data: Reed switch n.o. 230 V AC 0.5A 50 VA
  • Basic Data: PN 100bar , tmax = 90°C
  • Process Connections available: G1/4 female brass
  • Flow Range: 0.4-2.5 l/min H2O
Piston Inline Flow Switch

The GHM Honsberg FX Mechanical Flow Switch is designed for liquid or gaseous media, with magnetic triggering
of a fixed reed switch. It features a plastic housing with integrated filter, fixed switch value, control of small flow
rates, high switch capability & flow regulator as option
  • Function: Flow switch /regulator
  • Electrical Data: Reed switch n.o. 230 V AC 1.5A 50 VA
  • Basic Data: PN 10bar , tmax = 80°C
  • Process Connections available: G1/2A male plastic
  • Flow Range: 0.4-12 l/min H2O
HD1K/HD2K
Datasheet
Honsberg HD1K flow switch

GHM logo
Piston Inline Flow Switch

The GHM Honsberg HD1K Mechanical Flow Switch is designed for liquid or gaseous media, with magnetic triggering
of a fixed reed switch. It features a brass or stainless steel housing with optional mechanical indication
& a high switch capability. The HD2K features viscosity compensation.
  • Function: Flow switch
  • Electrical Data: Reed switch c.o. 250 V AC 1.5A 50 VA
  • Basic Data: PN 200bar , tmax = -20..+120°C (optional +150°C)
  • Process Connections available: G1/4 to G1 female brass or stainless steel
  • Flow Range: 0.4-85 l/min H2O
  • Intrinsically Safe Ex logo Intrinsically safe version available
Piston Inline Flow Switch

The GHM Honsberg OMNI-HD1K Mechanical Flow Meter is designed for liquid flow measurement. It features an IP67
display with an analogue output plus 2 programmable switch outputs.
The display is rotatable around the process connections for easy reading. Configuration is by a rotating ring that
can be removed to prevent unauthorised parameter changes.
  • Function: Analogue 0/4-20mA or 0/2-10V output plus 2 configurable NPN/PNP switch outputs
  • Configuration: Rotatable, removable programming ring
  • Basic Data: PN 200bar , tmax = -20..+85°C (optional +150°C)
  • Process Connections available: G1/4 to G1 female brass or stainless steel
  • Flow Range: 0.1-80 l/min H2O
  • Display type: Backlit transreflective LCD that can be read in bright sunlight and in darkness
  • Display Protection: IP67 ingress protection with scratch and chemical resistant glass
  • Display Flow Units: User selectable l/min, m3/h etc.)