Inductive proximity sensor with 4 mm diameter, NPN type output, manufacturer direct sale.
Functions:
Red LED checks the state of proximity sensor
High repeated positioning accuracy
High switching frequency
Wide voltage range
Antivibration, dust, water and oil prevention
Reverse power protection, short circuit protection, directly connecting with PLC
Can replace small switches and limit switches
Specification:
Model | CHN-PSI-4A1ZN |
Installation type | Shielded |
All the output methods | DC type | NPN | NO |
NC |
PNP | NO |
NC |
2 wire | NO |
NC |
Detection range | 1mm±10% |
Setting distance | 0-0.7mm |
Delay distance | ≤10% detection range |
Detection object | Magnetic metal (the detection distance decreases when it is non-magnetic metal) |
Standard detection object | Iron 5*5*1mm |
Response frequency | DC: 2kHz, AC: 50Hz |
Supply voltage | DC type: DC 12-24V (6-36V), impulse (p-p) 10% below; AC type: AC 110-220V (90-250V) 50/60Hz |
Withstand voltage | AC1000V 50/60Hz 1min between charging part and housing |
Voltage influence | Inside ±15% rated supply voltage range, at rated supply voltage value, inside ±10% detection distance |
Consumption current | N/P type: ≤13mA, D type: ≤0.8mA, A type: ≤1.7mA |
Control output | N/P type: ≤300mA, D type: ≤200mA, A type: ≤400mA |
Loop protection | N/P/D type: reversal connection protection, surge absorption, load short-circuit protection, A type: surge absorption |
Ambient temperature & humidity | Operation temperature/storage temperature: -30~65℃ (no freeze, no dew); Operation humidity/storage humidity: 35~95%RH |
Temperature influence | Temperature range -30~65℃, at +23℃, ±15% detection distance; Temperature range -25~60℃, at +23℃, ±10% detection distance |
Insulation impedance | ≥50MΩ (DC500 megameter) between charging part and housing |
Material | Housing: Nickel plated brass, Detection surface: ABS |
Protection class | IP67 |
Cable length | 1.2m |
Dimensional drawing (unit: mm):

Wiring diagram:

Tips: How to choose a proximity sensor?
Inductive proximity sensor and capacitive proximity sensor are often used in the general industrial sites. Because these two types of proximity sensors have lower standard on environment. If the detected object is a conductive object or an object fixed on metal, inductive proximity sensor will be generally chosen for its high response frequency, excellent anti-jamming performance, wide range of application and lower price. If the detected object is a non-metal (or metal), liquid height, powder height, plastic or tobacco etc, capacitive proximity sensor will be chosen for its low response frequency but good stability. On the occasion of better environment and non-dust pollution, photoelectric proximity sensor can be chosen because it almost has no effect on the detected object during operation. If the detected object is made from permeability magnetic material, or is buried of a magnet steel in order to distinguish the detected object from another object that moves together, Hall proximity sensor will be chosen due to its lowest price. Sometimes in order to improve the reliability of identification, the above-mentioned several proximity sensors are often used in combination.
4mm proximity sensor can detect a variety of metals, miniature size, long life, low price, shielded type installation, anti-interference ability, 1mm detection distance, using for precise positioning of molds, precision machine tools and robots.