Compact pressure switches for gas and air

Transcription

1 Compact pressure es for gas and air / 5.0 Printed in Germany Edition 0.8 Nr Technical description The pressure is an adjustable compact pressure according to EN 854 for combustion plants. The pressure es are suitable for -on, -off and -over of an electric circuit at a variable pressure actual value, relative to the set desired value.the setpoint (ing point) is set on an adjusting wheel with scale. A test nipple is integrated in the metal housing as standard. Application Pressure monitoring in combustion, ventilation and air-conditioning technologies. Suitable for gases of families,, and other neutral gaseous media. Approvals EC type testing certificate as per: EC-Gas Appliances Regulation EC-Pressure Equipment Directive Pressure class S as per EN 854. Approvals in other important gasconsuming countries.

2 Functional description Single-acting pressure in overpressure range. The pressure es operate without any power supply. Switching response Short response time during pressure fluctuations. / Slow response time during short-term pressure fluctuations by additional damping nozzle. pressure The control unit responds to pressure. If the setpoint is exceeded or undershot, the circuit is ed on, off or over. GW / A6 double pressure Combination of two flanged GW... A6 single pressure es. The two setpoints are set separately and independently. A combination of different setpoint ranges is therefore possible. The two control units are fed from the same medium at the medium s pressure. Switching function If pressure increases: NC opens, NO closes. If pressure drops: NC closes, NO opens. COM p NO NC Definition of p ing difference The p ing difference is the pressure difference between the upper and lower ing pressure. Pressure at control unit p ing difference Setting tolerance Adjustment when pressure drops upper ing pressure (ON) rising falling lower ing pressure (OFF) Switching difference GW...A5/A6 Depending on the corresponding set value (p ) GW... A5/A6 [ mbar ],5,5,5 0,5 0 [ mbar] 7,5 5,5 0 7,5 5,5 0 7,5 5,5 0 p [mbar] p [mbar] 6

3 Specifications Max. operating pressure GW A6 - GW 50 A6 500 mbar (50 kpa) GW 500 A6 600 mbar (60 kpa) Pressure connection Standard (V0): Special design (V): centrally on housing bottom, G /4 inner thread as per ISO 8 additionally G /4 inner thread (side right) Measuring connection Temperature range Test nipple integrated in metal housing ø9 Ambient temperature -5 C to +70 C Medium temperatue -5 C to +70 C Storage temperature -0 C to +80 C Materials Housing: Switch part: Diaphragms: Switching contact: Aluminium die cast Polyamide NBR Ag Switching voltage Nominal current AC eff. min. 4 V max. 50 V DC min. 4 V max. 48 V GW A6 AC eff. max.0 A GW A6 AC eff. max. 6 A Switching current Electrical connection Degree of protection Setting tolerance Deviation AC eff. max.6 A at cos ϕ AC eff. max. 4 A at cos ϕ AC eff. max. A at cos ϕ 0,6 AC eff. max. A at cos ϕ 0,6 AC eff. min. 0 ma AC eff. min. 0 ma DC min. 0 ma DC min. 0 ma DC max. A DC max. A Terminal connection for line sockets as per DIN EN , -pin, protection-insulated without ground connection IP 54 as per IEC 59 (EN 6059) ± 5% point deviation referred to setpoint, adjusted for dropping pressure, vertical diaphragm position Permissible deviation of the set value in the service life test according to EN 854 Mounting options Safety solenoid valve SV Pressure tap mounting possible no no Pressure tap Pressure tap 4 pe (p ) Pressure tap 4 pa (p ) Pressure tap 6

4 Dimensions [mm] GW A6, A6/ Pressure connection, optional with damping nozzle in / 4 4 7,4 ø 5, Optional Pressure connection G /4 5,75 7,5 58,4 9, ø 4, 0, Test nipple ø 9 8 Sealing screw Oblong slot,0 7 6 Made in Germany IP 54 4 Seal Terminal connector for line socket as per DIN EN Protective cover for terminal connector Installation position Standard installation position; if a different installation position is used, pay attention to the changed operating points: GW 50 A6 approx. ± 0,6 mbar GW 50 A6 approx. ± mbar GW 500 A6 approx. ± mbar When installed horizontally, the pressure es at a pressure higher. When installed horizontally overhead, the pressure es at a pressure lower. α When installed in an intermediate installation position, the pressure es at pressure deviating from the set reference value. 4 6

5 Designation Pressure connection V0 Pressure connection G /4 position 0 V Pressure connection G /4 position Sealing screw VS0 Sealing screw at position 0 VS Sealing screw at position Test nipple MS9 Test nipple at position 9 example Pressure design Pressure GW...A6 Setting range 0,5-5 kpa (5-50 mbar) Contact material Ag Electrical connection Equipment connector Pressure connection G /4 at position 0 Test nipple MS 9 Sealing screw At position Electrical connection G Equipment connector, pin protection-insulated, w/o grounding Contact material Ag Setting ranges [kpa] [mbar] Pressure design GW...A6 Pressure es when the setpoint is exceeded or undershot. GW...A6/ Pressure with damping nozzle es if the set value is exceeded or undershot GW 50 A6 [Ag-G-MS9-V0-VS] Accessories for GW A6 pressure Line sockets, -pin + grounding, grey GDMW Test nipple G /4 with sealing ring ( x) Sealing screw G /4 with sealing ring ( x) Mounting kit for double pressure Mounting bracket, metal Mounting kit (for fitting to SV)

6 Compact pressure es for gas and air / Double pressure GW / A6 Short technical overview Type Design [Ag-G-MS9-V0] kpa = 0 mbar = 000 Pa 00 mm WS ( piece) (80 pieces) Setting range [mbar] max. Switching difference p [mbar] p Èmin. p Èmax. pressure GW A6 GW 0 A6 GW 50 A6 GW 50 A6 GW 500 A ,7 0,8,,5, Type Design [Ag-G-MS9-V0-VS] ( piece)* (80 pieces) Setting range [mbar] max. Switching difference p [mbar] p Èmin. p Èmax. pressure GW A6 GW 0 A6 GW 50 A6 GW 50 A6 GW 500 A ,7 0,8,,5, * including line socket Type Design [Ag-G-MS9-V0-VS] ( piece) (80 pieces) Setting range [mbar] max. Switching difference p [mbar] p Èmin. p Èmax. / pressure GW 50 A6/ GW 50 A6/ GW 500 A6/ , with damping nozzle x We reserve the right to make any changes in the interest of technical progress. Head Offices and Factory Karl Dungs GmbH & Co. KG Karl-Dungs-Platz D-7660 Urbach, Germany Telefon +49 (0) Telefax +49 (0) Postal address Karl Dungs GmbH & Co. KG Postfach 9 D-760 Schorndorf, Germany info@dungs.com Internet 6 6