Pressure switch címkéhez tartozó bejegyzések

Pressure switch / MacPress

MacPress-pressure-switch-for-water

MacPress is a regular pressure switch for hidrofor systems with expansion vessel.

MacPress must be installed on the pipe, where it can sense the system’s pressure. The device operates between two pressure value: a starting, and a stopping pressure value.

When the system’s pressure drops below the pre-set start pressure (by opening a tap), MacPress sense it, and start the pump. When the water collecting process is over, and we close the tap, the pressure will increase. When the pressure reach the pre-set stopping value, stop the pump.

The housing colors: Blue is one phase, red is three phase

Mounting On pipe
Protection rating IP 44
Operating temperature 0°C ÷ +50°C
Connections 1/4″ F (can be ordered 1/2″ F)
Rated Current 16 (10) and 25 (16) A
Power supply 117 / 230 / 400 V~ 50-60Hz
Approval CE
Dimensions 112 x 105 x 55 mm
Weight 0,37 kg
Modell Line Voltage Factory settings Pressure range
MPM3 One phase 2 – 3 bar 1,5 – 6 bar
MPM6 One phase 4 – 5,5 bar 4 – 10 bar
MPT3 Three phase 2 – 3 bar 1,5 – 6 bar
MPT6 Three phase 4 – 5,5 bar 4 – 10 bar

Pressure switch for water system applications / PM5; PT/5; PM/6; PT/6; PM/12; PT/12

PM-pressure-switchPressure switch for normal hidrofor system (with expansion vessel).

Operates between two pressure value (starting and stopping). When the pressure in the system drops below the starting value, the pressure switch start the pump. As soon as the pressure increase in the system, and reach the stopping value, the pressure switch will shut down the pump.

PM/5 PT/6 PM/12 PT/5 PT/6 PT/12
Pressure range 1 – 5 bar 1.5 – 5.5 bar 3 – 12 bar 1 – 5 bar 1.5 – 5.5 bar 3 – 12 bar
Factory settings 1.4 – 2.8 bar 1.8 – 3 bar 5 – 7 bar 1.4 – 2.8 bar 1.8 – 3 bar 5 – 7 bar
Min. differential 0.6 bar 0.8 bar 1.5 bar 0.6 bar 0.8 bar 1.5 bar
Max. differential 2.3 bar 2.2 bar 5 bar 2.3 bar 2.2 bar 5 bar
Rated current 16 (10) A 16 (10) A 16 (10) A 16 (10) A 16 (10) A 16 (10) A
Rated voltage 250 V 250 V 250 V 250 V 250 V 250 V

Pressure switch to water pumps with integrated pressure gauge and 3 way fittings / PM/5-3W; PM/5-2W

PM5-3

PM/5-3 WPM5-2

PM/5-2 W


This pressure switch is a PM/5 but widen with a housing. The housing contain 3 or 2 threads (see the data sheet) for easy install on the hidrofor system, and a pressure gauge.

The operation principle is the same as the PM/5 pressure switch:

Operates between two pressure value (starting and stopping). When the pressure in the system drops below the starting value, the pressure switch start the pump. As soon as the pressure increase in the system, and reach the stopping value, the pressure switch will shut down the pump.

PM/5-3W PM/5-2W
Pressure range 1 – 5 bar 1.5 – 5.5 bar
Factory settings 1.4 – 2.8 bar 1.8 – 3 bar
Min. differental 0.6 bar 0.8 bar
Max. differentak 2.3 bar 2.2 bar
Rated current 16 (10) A 16 (10) A
Rated voltage 250 V 250 V
Connections 1″ Male 1/4″ Male
1″ Female 1″ Female
1″ Female
Pressure gauge Ø 40 mm 0-6 bar / 0-86 PSI Ø 40 mm 0-6 bar / 0-86 PSI

In case of direct connections (when the MP/5-3 W turn on/off the motor), the motor’s power cannot be higher than 1.1 kW. With an adequacy magnetic switch it can be increased.

Pressure switch with SPDT contact

PS3-SPDT-contact-pressure-switch

PS pressure switches are for different technological water system control. They are used most in firefight water systems. With the SPDT relay contact, can operate two pump at once:

If the electric pump stop by any malfunction, the pressure in the firefight water system will cease. The pressure switch sense the drop, and the SPDT microswitch will switch on a pump drived by petrol engine.

PS-PRESSURE-SWITCH

The fire sprinkler system supplied by the electric pump.

PS-PRESSURE-SWITCH 2

The electric pump failed, the pressure dropped. PS pressure switch sense the pressure drop, and switched to the petrol engine pump.

Data sheet PS/3 PS/3D PS/5 PS/5D PS/12 PS/12D
Max. factory pressure 5 bar 5 bar 12 bar 12 bar 12 bar 12 bar
Pre-set pressure 0.9 – 2 bar 0.9 – 5 bar 1.7 – 5 bar 1.7 – 7.5 bar 2.5 – 10 bar 2.5 – 12 bar
Min. pressure differential  0.2 bar 0.4 bar 0.5 bar 0.5 bar 0.8 bar 0.8 bar
Max. pressure differential  0.2 bar 2.5 bar 0.7 bar 3.3 bar 1.4 bar 3.8 bar
Max. voltage

5 A – 250 V

Low pressure switch / LP/3D; LP/3-18

LP3-low-pressure-switch

  • Pressure switch for the protection of water systems (autoclave and fi re-fi ghting systems) and pneumatic systems (control circuits under pressure)
  • The device interrupts the electric connection between the line and the load when the pressure decreases below the established value (stop pressure)
  • In the autoclave systems it is matched in series with a PM/5 pressure switch in order to protect the electric pump from dry running
  • The reset is automatic when the pressure becomes again higher than the start value or when pressing the reset button
  • Double electric contact: normally open, made of brass alloy with Ag-Ni surfacing
  • Terminals with M4 screws and 8×8 mm pressure dice
  • NBR rubber membrane with food grade textile insert
  • ¼” F hydraulic connection made of galvanised steel
  • Standard protection degree IP 44
  • Max ambient temperature: 55°C
  • Tear resistant cable clamps

Warning!

The pressure of the watercolum within the pipes cannot be greater than the stop pressure.

LP/3 LP/3 – 18
Cut-out (pump stop) pressure 0.05 – 0.4 bar 0.5 – 2 bar
Cut-in (pump start) pressure 0.4 – 0.75 bar 0.95 – 2.6 bar
Factory settings 0.1 – 0.5 bar 0.5 – 0.95 bar
Rated current  16 (10) A 16 (10) A
Rated voltage 250 V 250 V

Vacuum switch | VC100SW

VC100 vacuum switch

  • Vacuum switch, useful for protecting the pump against dry running during draining of basins, tanks or cisterns
  • The switch, which is fi tted on the suction pipe, controls the vacuum generated by the pump
  • The system is activated manually using the start lever which, when lowered, starts the pump running; this action leads to the creation of the vacuum which automatically determines the closure of the contacts. When the liquid supply is about to run out, the vacuum in the suction line disappears and so the switch deactivates the pump
  • Variable distance between the switch and the end of the suction pipe (from 0 to 4 m / 0 to 157 ½ inches)
  • Normally open brass alloy contacts with Ag-Ni insert
  • Oil-resistant NBR rubber membrane
  • Max ambient temperature 55°C
VC100
Connections 1/4″ Female
Rated voltage 250 V
Rated current 16 (10) A
Setting values 1.5 – 2 – 2.5 – 4 – 4.5 inHg