PRESSURE SWITCHES D-LT Electro-mechanical pneumatic pressure switches. 18D-LT x2 Electro-mechanical pneumatic pressure switches.

Transcription

1 PRESSURE SWITCHES 8D-LT Electro-mechanical pneumatic pressure switches 8D-LT x Electro-mechanical pneumatic pressure switches Page -0 Page -0-0

2 8D-LT G/, / NPT or flange Microswitch with gold plated contacts High number of switching cycles Microswitch approved by UL and CS Intrinsically safe operation Wide range of temperature Shock and vibration tested to EN 67, Category, class and Pressure switch suitable for - C (-67 F) on request +8 C (+8 F) -0 C (-0 F) Technical features EN 67 Medium: For neutral, gaseous and liquid fluids, non-combustible Operation: Diaphragm Operating temperature range: Fluid (reliability) mbient (reliability) C ( F) Temperature at switching element: C ( F) ir supply must be dry enough to avoid ice formation at temperatures below + C (+ F) Media viscosity: Up to 000 mm /s Switching pressure difference/hysteresis: Fixed Repeatability: Repeatability: 0,... bar ( psi): ±0, bar (.9 psi) 0,... 8 bar: ( psi) ±0, bar (.6 psi), bar: (,... psi) ±0,6 bar (8.7 psi), bar: (.... psi) ±0,7 bar (0.8 psi) Life cycle of mechanical parts: 0 7 switching cycles Switching element: Microswitch with gold plated contacts Degree of protection: IP6 for DIN EN 7-80 (DIN 60) form connection IP67 for M x connection Mounting position: Optional Electrical connection: DIN EN 7-80 (DIN 60) form or M x IEC 97-- Housing: luminium (brass) Seals: EPDM, VMQ, NR Option selector 088 ir port G / 0 Flange / NPT Pressure range (bar) ,... 0, Electrical connection DIN EN 7-80 (DIN 60) form 7 Mx IEC DIN plug connection plug included in scope of supply Pressure range *) Max. switching pressure difference Max. over pressure *) Switching cycles press sensor Port size Weight Drawing Model lower range (bar) upper range (bar) (bar) (per min) body seals (kg) No , 0, 6 00 L, anodized EPDM, VMQ Female, / 0, 088#7 0,... 0, 0, 6 00 L, anodized EPDM, VMQ Female, / 0, 088#7 0, , 0, L, anodized EPDM, VMQ Female, / 0, 088# ,, L, anodized EPDM, VMQ Female, / 0, 088# ,, 6 00 L, anodized EPDM, VMQ Female, / 0, 088# , 0, 6 00 L, anodized EPDM, VMQ, NR Flange 0, ,... 0, 0, 6 00 L, anodized EPDM, VMQ, NR Flange 0, , , 0, L, anodized EPDM, VMQ, NR Flange 0, ,, L, anodized EPDM, VMQ, NR Flange 0, ,, 6 00 L, anodized EPDM, VMQ, NR Flange 0, *) Setpoints should be ideally in the middle of the switching pressure range. Reference pressure = atmospheric pressure. Switching pressure must not exceed the indicated values. *) Max. values # Please insert O for ISO G, for NPT thread -0 For further information

3 8D-LT G/, / NPT or flange M x Connection plug not included, max. allowable voltage V Pressure range *) Max. switching pressure difference Max. over pressure Switching cycles press sensor Port size Weight Drawing Model lower range (bar) upper range (bar) (bar) (per min) body seals (kg) No , 0, 6 00 L, anodized EPDM, VMQ Female, / 0, 088#8 0,... 0, 0, 6 00 L, anodized EPDM, VMQ Female, / 0, 088#8 0, , 0, L, anodized EPDM, VMQ Female, / 0, 088# ,, L, anodized EPDM, VMQ Female, / 0, 088# ,, 6 00 L, anodized EPDM, VMQ Female, / 0, 088# , 0, 6 00 L, anodized EPDM, VMQ, NR Flange 0, ,... 0, 0, 6 00 L, anodized EPDM, VMQ, NR Flange 0, , , 0, L, anodized EPDM, VMQ, NR Flange 0, ,, L, anodized EPDM, VMQ, NR Flange 0, ,, 6 00 L, anodized EPDM, VMQ, NR Flange 0, *) Setpoints should be ideally in the middle of the switching pressure range. Reference pressure = atmospheric pressure. Switching pressure must not exceed the indicated values. *) Max. values # Please insert O for ISO G, for NPT thread ccessories Pressure port reducing nipple Surge damper Cover (via adjustment screw) Connector (included as standard in scope of supply of switch) Connector M x, -pin, 90 Connector M x -pin, straight (brass) 0777 (brass) (without cable) 0 (without cable) 0008 (stainless steel) 08 (stainless steel) Switching function p Connector DIN EN 7-80, form Microswitch SPDT Terminals - : Contacts close on rising pressure. Terminals - : Contacts open on rising pressure. p Connector M x Microswitch SPDT Terminals - : Contacts close on rising pressure. Terminals - : Contacts open on rising pressure. Switching capacity Micro-switch with gold plated contacts Load level Current type Load type U min (V) Max. permanent current Imax () at U (V) Standard *) a.c. ohmic (e.g. contactors, a.c. inductive, solenoids) cos ϕ = 0,7 d.c. ohmic, 0,8 0, d.c. inductive, 0, 0, 0,0 L/R = 0 ms Minor *) a.c. ohmic *6) 0, 0, 0,7 0,08 0,0 (e.g. electronic d.c. inductive, *6) 0, 0,0 circuits) L/R = 0 ms Reference number: /min, Reference temperature: + C Spark quenching/intrinsically safe with diode with d.c. and inductive load: I max =, x I max. of table I min = (m) Creepage and air paths correspond to insulation group according to VDE Reg. 00 (except contact clearance of microswitch). *) Gold-plating not required as it would decay. Max. perm. inrush current (appr. ms) I a.c. = max. *) Gold-plating required (will not decay). *6) Lower value of critical voltage guarantees sufficient contact safety. Lower voltages permissible under favourable conditions. For further information -0

4 8D-LT G/, / NPT or flange Recommended circuit - spark quenching / intrinsically safe with d.c. voltage. Diode D in parallel to inductive load. Observance of correct polarity (positive pole to cathode). + (a.c./d.c.) Dimensioning specifications for quenching diode: Rated voltage at diode: U D, x Us p Rated current at diode: I N I Load Selection of a quick switching diode (recovery time trr 00 [ms]).. RC link in parallel to load in parallel to switching contact. Suited for d.c. and a.c. voltage. Dimensioning principles: U - (a.c./d.c.) R *) I *) D R C R in Ω 0, x R Load in Ω C in [µf] I Load in [] *) R Load, I Load Dimensions G / or / NPT G / or / NPT Dimensions shown in mm Projection/First angle 0 0, 7, 7 7, 7 9, Flange djustable switch point 0 fter releasing the locking screw Clockwise rotation = encreasing switch point nti-clockwise rotation = decreasing the switch point - + Switch point screw Locking screw, 7 O-ring x,, Electrical connection for plug conforming to DIN EN 7-80, form Electrical connection M x 9,, 0 0 M x -0 For further information

5 8D-LT x G/, / NPT, flange Microswitch with gold plated contacts High number of switching cycles Microswitch approved by UL and CS Intrinsically safe operation Wide range of temperature Shock and vibration tested to EN 67, Category, class and Pressure switches suitable for - C (-67 F) on request +8 C (+8 F) -0 C (-0 F) Technical features Medium: For neutral, gaseous and liquid fluids, non-combustible Operation: Diaphragm Operating temperature range: Fluid/mbient (reliability) C ( F) Temperature at switching element: C ( F) ir supply must be dry enough to avoid ice formation at temperatures below + C (+ F) Media viscosity: Up to 000 mm /s Switching pressure difference/hysteresis: Fixed Repeatability: Repeatability: 0,... bar ( psi): ±0, bar (.9 psi) 0,... 8 bar: ( psi) ±0, bar (.6 psi), bar: (,... psi) ±0,6 bar (8.7 psi), bar: (.... psi) ±0,7 bar (0.8 psi) Life cycle of mechanical parts: 0 7 switching cycles EN 67 Switching element: Microswitch with gold plated contacts Degree of protection: IP6 Mounting position: Optional Electrical connection: DIN EN 7-80 (DIN 60) form Housing: luminium (brass) Seals: EPDM Option selector DS-M 00 Thread form ISO G NPT Flange Port size G N F / Flange Pressure range switch (bar) 0, , , , F Electrical switching function switch switch NO NC X NC NO Y NO NO O NC NC C Pressure range switch (bar) 0, , , , Thread port connection plug included in scope of supply Pressure range *) Max. over pressure *) Switching cycles press sensor Port size Weight Drawing Model switch (bar) switch (bar) (bar) (per min) body seals (kg) No. 0,... 0, L, anodized EPDM, VMQ Female, / 0, DS-M#00*00 0, , L, anodized EPDM, VMQ Female, / 0, DS-M#0808* L, anodized EPDM, VMQ Female, / 0, DS-M#00* L, anodized EPDM, VMQ Female, / 0, DS-M#66*00 0,... 0, L, anodized EPDM, VMQ Female, / 0, DS-M#00*00 0, L, anodized EPDM, VMQ Female, / 0, DS-M#00*00 0, L, anodized EPDM, VMQ Female, / 0, DS-M#06*00 0, L, anodized EPDM, VMQ Female, / 0, DS-M#00*00 0, L, anodized EPDM, VMQ Female, / 0, DS-M#06*00 * Please insert X, Y, O or C for electrical switching function see option selector # Please insert G for ISO G, N for NPT thread *) Setpoints should be ideally in the middle of the switching pressure range. Reference pressure = atmospheric pressure. Switching pressure must not exceed the indicated values. *) Max. values Switching pressure difference see page -06 For further information -0

6 8D-LT x G/, / NPT, flange Flange connection plug included in scope of supply Pressure range *) Max. over pressure *) Switching cycles press sensor Port size Weight Drawing Model switch (bar) switch (bar) (bar) (per min) body seals (kg) No. 0,... 0, L, anodized EPDM, VMQ, NR Flange 0, DS-MFF00*00 0, , L, anodized EPDM, VMQ, NR Flange 0, DS-MFF0808* L, anodized EPDM, VMQ, NR Flange 0, DS-MFF00* L, anodized EPDM, VMQ, NR Flange 0, DS-MFF66*00 0,... 0, L, anodized EPDM, VMQ, NR Flange 0, DS-MFF008*00 0, L, anodized EPDM, VMQ, NR Flange 0, DS-MFF00*00 0, L, anodized EPDM, VMQ, NR Flange 0, DS-MFF06*00 0, L, anodized EPDM, VMQ, NR Flange 0, DS-MFF00*00 0, L, anodized EPDM, VMQ, NR Flange 0, DS-MFF06*00 * Please insert X, Y, O or C for electrical switching function, see option selector on page -0. *) Setpoints should be ideally in the middle of the switching pressure range. Reference pressure = atmospheric pressure. Switching pressure must not exceed the indicated values. *) Max. values Pressure range and switching pressure difference ccessories Pressure range (bar) Max. switching pressure difference lower range (bar) upper range (bar) Pressure port reducing nipple Surge damper Connector (included as standard in scope of supply of switch) 0,... 0, 0, 0, ,0 0,90, ,,00, ,0, (brass) 0777 (brass) (stainless steel) 08 (stainless steel) Switching function Switch : NO Terminals - : Contacts closed on rising pressure. Switch : NC Terminals - : Contacts closed on falling pressure. Switch : NC Terminals - : Contacts closed on falling pressure. Switch : NO Terminals - : Contacts closed on rising pressure. Switch : NC Terminals - : Contacts closed on falling pressure. Switch : NC Terminals - : Contacts closed on falling pressure. Switch : NO Terminals - : Contacts closed on rising pressure. Switch : NO Terminals - : Contacts closed on rising pressure. Switching capacity Micro-switch with gold plated contacts Load level Current type Load type U min (V) Max. permanent current Imax () at U (V) Standard *) a.c. ohmic (e.g. contactors, a.c. inductive, solenoids) cos ϕ = 0,7 d.c. ohmic, 0,8 0, d.c. inductive, 0, 0, 0,0 L/R = 0 ms Minor *) a.c. ohmic *6) 0, 0, 0,7 0,08 0,0 (e.g. electronic d.c. inductive, *6) 0, 0,0 circuits) L/R = 0 ms Reference number: /min, Reference temperature: + C Spark quenching/intrinsically safe with diode with d.c. and inductive load: I max =, x I max. of table I min = (m) Creepage and air paths correspond to insulation group according to VDE Reg. 00 (except contact clearance of microswitch). *) Gold-plating not required as it would decay. Max. perm. inrush current (appr. ms) I a.c. = max. *) Gold-plating required (will not decay). *6) Lower value of critical voltage guarantees sufficient contact safety. Lower voltages permissible under favourable conditions. -06 For further information

7 8D-LT x G/, / NPT, flange Recommended circuit spark quenching / intrinsically safe with d.c. voltage. Diode D in parallel to inductive load. Observance of correct polarity (positive pole to cathode). + (a.c./d.c.) Dimensioning specifications for quenching diode: Rated voltage at diode: U D, x Us p Rated current at diode: I N I Load Selection of a quick switching diode (recovery time trr 00 [ms]).. RC link in parallel to load in parallel to switching contact. Suited for d.c. and a.c. voltage. Dimensioning principles: U - (a.c./d.c.) R *) I *) D R C R in Ω 0, x R Load in Ω C in [µf] I Load in [] *) R Load, I Load Dimensions G / or / NPT ~ Dimensions shown in mm Projection/First angle 6, 7, 87 7, G/ Switch Switch djustable switch point fter releasing the locking screw Clockwise rotation = encreasing switch point nti-clockwise rotation = decreasing the switch point Switch point screw - + Locking screw For further information -07

8 8D-LT x G/, / NPT, flange Flange ~ Dimensions shown in mm Projection/First angle, 7, ø 8 7, 6,, Switch Switch O-ring x, djustable switch point fter releasing the locking screw Clockwise rotation = encreasing switch point nti-clockwise rotation = decreasing the switch point Switch point screw - + Locking screw -08 For further information