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Product
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GDM20-40K series prism shape inductive proximity sensor

Operating form and model number
Current type Operating form Contact form Model number
DC NPN NO GDM20-40K-N1
DC NPN NC GDM20-40K-N2
DC NPN NO+NC GDM20-40K-N4
DC PNP NO GDM20-40K-P1
DC PNP NC GDM20-40K-P2
DC PNP NO+NC GDM20-40K-P4
DC Two wires NO GDM20-40K-D1
DC Two wires NC GDM20-40K-D2
AC Two wires NO GDM20-40K-A1
AC Two wires NC GDM20-40K-A2
General
Model number GDM20-40K series
External dimensions 40x40x53
Installation type Non-shielded
Detection distance 20mm±10%
Setting distance 0-18 mm
Supply voltage 12-24Vdc (6-36Vdc); 110-220Vac (36-250Vac), 50/60Hz
Rated output current N.P Type: 300mA max; D type: 200mA max; AC Type: 400mA
Standard detected object Mild steel (50x50x1mm)
Sensing object Magnetic metals (if it is not magnetic metals, the sensing distance would decrease)
Response frequency NPN or PNP: 0.2kHz; Two wires of DC: 0.4kHz; Two wires of AC: 25Hz
Leakage current N.P Type: 13mA max; D type: 0.8mA max; A Type: 1.7mA max
Hysteresis 10% max. of sensing distance
Protection circuit DC: Reverse connection protection, Surge suppressor, Short-circuit protection
AC: Surge suppressor
Insulation resistance 50MΩ min (between charging part and housing)
Dielectric strength 1000Vac, 1min (between charging part and housing)
Temperature influence ±10% max. of sensing distance at 23°C within temperature range of -25°C to 60°C
±15% max. of sensing distance at 23°C within temperature range of -30°C to 65°C
Voltage influence ±10% max. of sensing distance in rated voltage range ±15%
IP Rating IP67
Material Case: ABS; Sensing surface: ABS