Introduction:
Inductive Proximity Sensors are the most widely used Sensor Technologies in the modern process control environment . The coil at the sensing face of the sensor is excited by a Sine-wave oscillator which produces an Electromagnetic field in the sensing face. When a metal object moves into the sensing range, due to Eddy Current effect, the oscillations are being dampened in the sensing circuitry. This change in status is detected by the detector circuit and is further processed by output logic driver section.
| – – | DC/TTL PNP or NPN (250 mA) | No. Sheet & Circuit Protection 100 mA / 500 mA | Smaller Length 40/50 | ||||||
| Model | Flush Non- Flush | Sensing Range(mm) | NO/NC | NO+NC | NAMUR | NO 2 Wire | MC 2 Wire | NO+NC 4 Wire | |
| MS-5 | Flush | 1 | * | * | * | ||||
| 6.5 | Flush | 1 | * | * | * | ||||
| MS-8 | F NF | 1 | * | * | * | * | |||
| 1.5 | * | * | * | * | |||||
| MS-12 | F NF | 2 | * | * | * | * | * | * | * |
| 4 | * | * | * | * | * | * | * | ||
| MS-18 | F NF | 5 | * | * | * | * | * | * | * |
| 8 | * | * | * | * | * | * | * | ||
| MS-30 | F NF | 10 | * | * | * | * | * | * | * |
| 15 | * | * | * | * | * | * | * | ||
| MS-35 | Non- Flush | 18 | * | * | * | * | * | * | * |
| MS-40 | Non- Flush | 20 | * | * | * | * | * | * | * |
| MS-50 | Non- Flush | 25 | * | * | * | * | * | * | * |
- Capacity Proximity Sensor are available in this sizes
- Ambient Temp. -250C to 750C
- Standard Cable 2.5 mtrs.
- Housing – also available in Nickel Plated Brass/SS/Plastic/Teflon
- Annuncation by LED indication* Capacity Proximity Sensor are available in this sizes
- Ambient Temp. -250C to 750C
- Standard Cable 2.5 mtrs.
- Housing – also available in Nickel Plated Brass/SS/Plastic/Teflon
- Annuncation by LED indication
Correction Factors
Inductive proximity switches, the conductivity permeability quotient of the target is the parameter for the reduction factor. The following table contains some typical values for the reduction factor.
| Material | Reduction Factor |
| Steel | 1 |
| Stainless Steel | 0.85 |
| Aluminium | 0.4 |
| Brass | 0.4 |
| Copper | 0.3 |
In capacity proximity switches, the relative permitivity is the parameter for reduction factor. The following table contain some typical values for the reduction factor.
| Material | Reduction Factor |
| Water | 1 |
| Ceramic | 0.6 |
| Glass | 0.5 |
| PVC | 0.45 |
| Oil | 0.28 |
Options
- Control units for regular switches
- High ambient temperature upto 1200C
- Amplifer unit for \’Namur\’ Switches
- Rectangular front/side Plane sensing
- Higher switching freq., other different shapes like ring type, Fork type, Plain Cylindrical type etc.
| Specification | AC | DC |
| Supply of Voltage | 90 to 230v | 10 to 30v |
| Load Current | 200mA / 500 mA | 100mA / 300mA |
| Voltage Drop Across the switch | <8v | <2v |
| Minimum Load Current | 5mA | 13mA |
| Hysterisi | <15% | <15% |
| Logic | PNP/NPN | |
| Output | NO/NC | NO/NC |
| Protection Class | IP67 | IP65 |
| Housing Material | NI Plated Brass | NI Plated Brass |
Ambient Temp. -250C to 750C Annuniciation by LED induction standard cable : 2 mtrs.
Features
■ Wide variety of sizes
■ High switching frequencies
■ Different outpur configuration
■ Comprehensive AC & DC modules
■ Rugged construction with built-in protection
■ Versatile mounting options (Cylindrical & Cubide)
Benefits
■ Suitable for Oily, Dusty Enivorments
■ Contact-less, Maintenance free operations
■ Ability to withstand high shock and vibration enivorments
Application
■ Parts Counting
■ Speed Monitoring
■ Position Detection and Monitoring