Electromechanical pressure switches

Transcription

1 Presentation Electromechanical pressure switches For control circuits, types ACW and ADW Presentation Pressure switches type ACW and ADW are switches for control circuits, with an adjustable differential. Pressure switches type ACW are used to control the pressure of air, oils and other non corrosive fluids, up to bar. Pressure switches type ADW are used to control the pressure of oils (including synthetic), up to 0 bar. Setting, operating principle Pressure switches type ACW The switching point on falling pressure (low point - PB) is adjusted using screw. + The switching point on rising pressure (high point - PH) is made by adjusting screw. This sets the differential between the low and high points, giving a switching point on rising pressure of the displayed low point setting plus the differential setting. The two adjustments are completely independent. Contact block operation When the rising pressure reaches the high point setting (low point setting + differential setting), contact B (-) opens and contact A (-) closes. The contacts remain actuated until the pressure falls back to the low point setting. Pressure switches type ADW + The switching point on rising pressure (high point - PH) is adjusted using screw. The switching point on falling pressure (low point - PB) is made by adjusting screw. This sets the differential between the high and low points, giving a switching point on falling pressure of the displayed high point setting minus the differential setting. The two adjustments are completely independent. Contact block operation When the rising pressure reaches the high point setting, contact B (-) opens and contact A (-) closes. The contacts remain actuated until the pressure falls back to the low point setting (high point setting - differential setting). 0 /

2 Characteristics Electromechanical pressure switches For control circuits, types ACW and ADW Environment characteristics Pressure switch type ACW (bellows operated) ADW (piston operated) Conformity to standards e, IEC/EN 0-- Product certifications CSA, UL (Recognized) Protective treatment Materials "TC" Zinc alloy case Phosphor bronze bellows Ambient air temperature (for operation) C Zinc alloy case Pressure switches with drainage hole: Buna N diaphragm, steel piston, cast iron cylinder Pressure switches with Quad-Ring piston seal: Buna N diaphragm, Teflon and Viton seal, stainless steel piston and cylinder Air, oils and other non corrosive fluids, from - to + C Oils and other fluids, from - to + 0 C (for ADW,, S,,, S) Degree of protection IP conforming to IEC/EN 0 Oils (including synthetic) only, from - 0 to + C (for ADW,,,,, ) Fluid connection Electrical connection Contact block characteristics Rated operational current Short-circuit protection Connection Category AC- Category DC- G / (BSP female) conforming to NF E 0-00, ISO G / (BSP female) conforming to NF E 0-00, ISO Terminals. tapped entry for n (DIN Pg.) cable gland Ue V 0 V 0 V 00 V Ue V 0 V 0 V 00 V 00 V 0 A cartridge fuse type gg CO single-pole pressure switches Ie A A A. A Ie A 0. A 0. A 0.0 A 0.0 A Screw terminals Minimum clamping capacity: x mm Maximum clamping capacity: x. mm CO single-pole pressure switches Ie A A. A 0. A Ie. A 0. A 0 /

3 References, characteristics Pressure switches type ACW Electromechanical pressure switches For control circuits, type ACW Sizes 0.0 to bar (0. to 00 psi) Adjustable differential, for regulation between thresholds Fluid connection G / (female) Bellows operated Adjustable range of switching point (PB) (Falling pressure) References Switches with CO single-pole contact bar (.0 0. psi) 0.0. bar (.0 0. psi) 0.0. bar (.0. psi) 0.0. bar (.0 0. psi) Air, oils and other non corrosive ACW M0 ACW M0 ACW M0 ACW M0 fluids, from - to + C () Weight (kg).0.0 Switches with CO single-pole contacts Air, oils and other non corrosive ACW M0 ACW M0 ACW M0 ACW M0 fluids, from - to + C () Weight (kg).0.0 Complementary characteristics not shown under general characteristics (page /) Possible differential (add to PB to give PH) CO switches Min. 0.0 bar (0. psi) 0.0 bar (. psi) 0.0 bar (. psi) 0.0 bar (. psi) Max. 0. bar (. psi) 0.0 bar (. psi) bar (. psi) bar ( psi) CO switches Min. 0.0 bar (0. psi) 0. bar (.0 psi) 0. bar (. psi) 0. bar (.0 psi) Max. 0. bar (. psi) 0.0 bar (0. psi). bar (0. psi). bar (0. psi) Maximum permissible pressure bar ( psi) bar (0. psi) bar (. psi) Mechanical life x 0 operating cycles (average value, depending on application) Cable entry entry tapped for n cable gland, conforming to NF C -00 (DIN Pg.). Clamping capacity to mm () See "Component materials of units in contact with the fluid", page /. Operating curve Contact block connections Pressure PH PB Time Adjustable value 0 Other versions Pressure switches with alternative tapped cable entries: ISO, NPT, etc. Please consult our Customer Care Centre. Dimensions: page / /0

4 Bellows operated. bar (0. psi) 0. bar (0. psi) 0. bar (0. 0. psi). bar (. psi) 0 bar ( 000 psi) bar ( 00 psi) References Switches with CO single-pole contact ACW M0 ACW M0 ACW M0 ACW M0 ACW M0 ACW 0M Switches with CO single-pole contacts ACW M0 ACW M0 ACW M0 ACW M0 ACW M0 ACW 0M Complementary characteristics not shown under general characteristics (page /) 0.0 bar (0. psi) bar (. psi). bar (. psi). bar (. psi). bar (. psi) bar (. psi) bar ( psi). bar (. psi). bar (. psi). bar (0. psi) 0 bar ( psi) bar (0. psi) bar (. psi). bar (. psi). bar (. psi). bar (. psi). bar (. psi) bar (. psi). bar (0. psi). bar (. psi) 0 bar ( psi) bar (. psi) bar (0 psi) bar ( psi) bar (. psi) 0 bar (0 psi) bar (. psi) 0 bar (00 psi) 0 bar (00 psi) bar ( psi) x 0 operating cycles (average value, depending on application) entry tapped for n cable gland, conforming to NF C -00 (DIN Pg.). Clamping capacity to mm Other versions Pressure switches with alternative tapped cable entries: ISO, NPT, etc. Please consult our Customer Care Centre. 0 Dimensions: page / /

5 References, characteristics Electromechanical pressure switches For control circuits, type ADW Sizes to 0 bar (000 to 0 psi) Adjustable differential, for regulation between thresholds Fluid connection G / (female) Pressure switches type ADW Piston operated, with drainage hole () Adjustable range of switching point (PH) (Rising pressure) References Switches with CO single-pole contact. bar ( 000 psi) 0 bar (0 0 psi) 0 bar ( 0 psi) Oils (including synthetic), ADW M0 ADW M0 ADW M0 from - 0 C to + C () () Weight (kg).0 Switches with CO single-pole contacts Oils (including synthetic), ADW M0 ADW M0 ADW M0 from - 0 C to + C () () Weight (kg).0 Complementary characteristics not shown under general characteristics (page /) Possible differential (subtract from PH to give PB) CO switches Min.. bar (. psi). bar (00 psi). bar (. psi) Max.. bar ( psi) bar (0 psi) bar ( psi) CO switches Min.. bar ( psi). bar (. psi) bar (0 psi) Max. bar (0 psi) bar ( psi) bar (. psi) Maximum permissible pressure Mechanical life 0 bar (0 000 psi) x 0 operating cycles (average value, depending on application) Cable entry entry tapped for n cable gland, conforming to NF C -00 (DIN Pg.). Clamping capacity to mm () Since it is normal for piston type pressure switches (not incorporating a piston seal) to have a slight oil leakage past the piston, a drain hole through the cylinder wall is incorporated. To avoid back pressure, this hole should never be plugged. If for any reason this oil leakage is undesirable, use pressure switches incorporating a Quad-Ring piston seal. () See "Component materials of units in contact with the fluid", page /. () Only for control of group fluids, in accordance with directive //EEC. Operating curve Contact block connections Pressure PH PB Time Adjustable value 0 Other versions Pressure switches with alternative tapped cable entries: ISO, NPT, etc. Please consult our Customer Care Centre. Dimensions: page / /

6 References, characteristics Pressure switches type ADW Electromechanical pressure switches For control circuits, type ADW Sizes to 0 bar (000 to 0 psi) Adjustable differential, for regulation between thresholds Fluid connection G / (female) Piston operated, with Quad-Ring piston seal Adjustable range of switching point (PH) (Falling pressure) References Switches with CO single-pole contact. bar ( 000 psi) 0 bar (0 0 psi) 0 bar ( 0 psi) Oils and other fluids, ADW M0 ADW M0 ADW SM0 from - C to + 0 C () () Weight (kg).0 Switches with CO single-pole contacts Oils and other fluids, ADW M0 ADW M0 ADW SM0 from - C to + 0 C () () Weight (kg).0 Complementary characteristics not shown under general characteristics (page /) Possible differential (subtract from PH to give PB) Maximum permissible pressure Mechanical life CO switches Min./max. at low setting Min./max. at high setting CO switches Min./max. at low setting Min./max. at high setting./. bar (./00 psi) / bar (0/0. psi) / bar (./. psi)./0 bar (./ psi) / bar (0/ psi) / bar (/. psi)./. bar (./. psi) / bar (./ psi) / bar (/0 psi) 0/ bar (/ psi) / bar (/. psi) /0 bar (/ psi) 0 bar (0,000 psi) x 0 operating cycles (average value, depending on application) Cable entry entry tapped for n cable gland, conforming to NF C -00 (DIN Pg.). Clamping capacity to mm () See "Component materials of units in contact with the fluid", page /. () Only for control of group fluids, in accordance with directive //EEC. Operating curve Contact block connections Pressure PH PB Time Adjustable value Other versions Pressure switches with alternative tapped cable entries: ISO, NPT, etc. Please consult our Customer Care Centre. 0 Dimensions: page / /

7 Dimensions Electromechanical pressure switches For control circuits, type ACW ACW,,, ACW,,,,,,, () 0 () () Tapped entry for n cable gland () Tapped entry for n cable gland Ø: G / (female) Ø: G / (female) ACW, ACW,, 0,,, 0 () () 0 () Tapped entry for n cable gland () Tapped entry for n cable gland Ø: G / (female) Ø: G / (female) Characteristics: pages /, / References: page / /

8 Dimensions Electromechanical pressure switches For control circuits, type ADW ADW,,,,, () () () Tapped entry for n cable gland () Drainage hole, tapped G / (female) Ø: G / (female) ADW,, S,,, S () () Tapped entry for n cable gland Ø: G / (female) 0 Characteristics: pages /, / References: page / /