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3 74 PRESSURE SWITCHES & SENSORS For further information www.norgren.com/us 20D Allfluid ATEX - fixed switching pressure difference 20D Allfluid ATEX - adjustable switching pressure difference *1) Atmospheric air pressure *2) Short-term pressure peaks are not allowed to exceed this limit value during operation. Operative utilization of the limit value is not permitted. The limit value corresponds to the maximum testing pressure. *3) NPT versions may be available upon request. Please contact technical support. *1) Atmospheric air pressure *2) Short-term pressure peaks are not allowed to exceed this limit value during operation. Operative utilization of the limit value is not permitted. The limit value corresponds to the maximum testing pressure. *3) NPT versions may be available upon request. Please contact technical support. Accessories For Ex zones 1 and 2 (gases) category II2G type of protection Ex db eb IIC T6 For Ex zones 21 and 22 (dusts) category II2D type of protection Ex tb IIIC T80°C IP65 Medium: For neutral, non-inflammable gases and fluids Operation: Softseal piston Stainless steel bellow Degree of protection: IP65 (DIN 40050) Fluid/Ambient temperature: -10 ... +75°C (+14 ... 167°F) Air supply must be dry enough to avoid ice formation at temperatures below +2°C (+35°F) Materials: Housing: Aluminum diecast Sensor: Brass or Stainless steel (1.4404) Sealing: Stainless steel-bellows Technical features Microswitch with gold plated contacts Symbol Model Operating pressure *1) (bar) Over pressure *2) (bar) Switching pressure difference (typical) Lower range Upper range (bar) (bar) Pressure sensor material Port size*3) Sensor 1840115000000000 -1 ... 0 10 0.20 0.23 1.4404 G1/2 B 1840215000000000 -1 ... 1 10 0.20 0.25 1.4404 G1/2 B 1840415000000000 -1 ... 2.5 10 0.22 0.26 1.4404 G1/2 B 1841115000000000 0.05 ... 1 10 0.16 0.18 1.4404 G1/2 B 1841215000000000 0 ... 1.6 10 0.16 0.20 1.4404 G1/2 B 1841415000000000 0.5 ... 4 20 0.50 0.55 1.4404 G1/2 B 1841515000000000 0.5 ... 6 20 0.60 0.70 1.4404 G1/2 B 1841615000000000 0.5 ... 10 20 0.70 0.90 1.4404 G1/2 B 1841715000000000 1 ... 16 50 1.00 1.40 1.4404 G1/2 F 1841815000000000 1 ... 25 50 1.30 1.80 1.4404 G1/2 F 1841915000000000 5 ... 63 150 2.00 5.00 1.4404 G1/2 H Symbol Model Operating pressure *1) (bar) Over pressure *2) (bar) Switching pressure difference (typical) Lower range Upper range minimal maximal (bar) (bar) (bar) Pressure sensor material Port size*3) Sensor 1850115000000000 -1 ... 0 10 0.19 0.25 0.80 1.4404 G1/2 B 1850215000000000 -1 ... 1 10 0.20 0.30 1.00 1.4404 G1/2 B 1850415000000000 -1 ... 2.5 10 0.20 0.28 2.50 1.4404 G1/2 B 1851115000000000 0.05 ... 1 10 0.16 0.18 0.80 1.4404 G1/2 B 1851215000000000 0 ... 1.6 10 0.10 0.16 1.00 1.4404 G1/2 B 1851315000000000 0.1 ... 2.5 10 0.18 0.22 2.00 1.4404 G1/2 B 1851415000000000 0.5 ... 4 20 0.50 0.60 2.50 1.4404 G1/2 B 1851515000000000 0.5 ... 6 20 0.60 0.70 5.00 1.4404 G1/2 B 1851615000000000 0.5 ... 10 20 0.70 0.90 8.00 1.4404 G1/2 B 1851715000000000 1 ... 16 50 1.60 1.90 12.00 1.4404 G1/2 F 1851815000000000 1 ... 25 50 1.60 2.20 20.00 1.4404 G1/2 F 1851915000000000 5 ... 63 150 2.00 5.00 20.00 1.4404 G1/2 H Brackets Surge damper Pressure port reducing nipple 0574772000000000 (Steel) 0553258000000000 (G1/4, Stainless steel 14505, AISI 303/304 S) 0553831000000000 (G1/2 & 1/2 NPT, Stainless steel 14505, AISI 303/304 S) 0553908000000000 (Stainless steel) 0574773000000000 (G1/4, Brass/Steel) 0550083000000000 (G1/4A ... G1/2A, Stainless steel 14505, AISI 303/304 S) 0574765000000000 (G1/4 ... 1/4 NPT, Brass) 20D Allfluid ATEX Electro-mechanical pressure switch -1 ... 63 bar, G1/2