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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 |
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