Description
E2A
Extended sensing range inductive sensor in cylindrical brass housing
The high quality and the long-life design of the E2A extended sensing distance provide the best value performance ratio for standard applications.
- Extended (double) sensing distance
- IP67 and IP69k for highest water protection
- DC 3-wire (NO, NC), DC 4-wire (NO+NC)
- Wide installation and connectivity range through modular concept
Features
Housing
Cable breakage protection (pulling)
Cable breakage protection (bending)
High mechanical resistance
Reliability
High electro-magnetic noise immunity
High vibration resistance
IP69k
IP69k according to DIN40 050/9
The IP69k test according to DIN 40 050 part 9 is intended to simulate high pressure / steam cleaning. During the test 14-16 l/min water at 80ºC is sprayed onto the sensor from different angles with 8000-10000 kPa. The sensor may not suffer any damaging effects from high pressure water in appearance and functionality.
Performance comparison
Environmental resistance
Chemical resistance
Issue: Detergents and chemicals used for cleaning or during the manufacturing process may severely damage (corrode) the housings or sensing face of sensors. But apart from these consciously used chemicals, accidentally applied liquids (soft drinks with low pH values or sweat) can unintentionally damage the sensors
| Solutions |
| * Market standard: basic splash water protection for dry and protected machine environment. |
| ** Tested enhanced high pressure water and saltwater spray protection with our E2A for open factory environment with occasional touching (sweat), cleaning or accidental liquid contact. The optional stainless steel housings may provide additional protection. |
| *** High and highest chemical resistance with our E2EH and E2FQ for frequent cleaning or intense and continuous chemical liquid contact. |
Extreme temperatures
| Issue: Continuously high or low temperatures exceeding the rated specifications quickly damage standard sensors. Suitable materials and/or product design are required for these applications. |
| Solutions: |
| * Market standard: normal ambient temperatures for operation and storage for standard factory environments. |
| ** Specified extended operating temperature range down to -40°C with our E2A for machine operation in lower temperatures. |
| *** High temperature resistance up to 200°C with our E2EH and E2C for applications with high continuous temperatures. |
Electromagnetic noise immunity
Electromagnetic fields
Issue: There are many sources for electromagnetic fields in today‘s machines, wireless communication is present everywhere in factories and the influences of electrical circuits and surrounding metal make a prediction of electromagnetic field influences nearly impossible. No or unsufficient protection in sensors may result in occasional false output signals that often go undetected but lead to quality issues in the final product.
| Solutions: |
| * Market standard: basic protection against electromagnetic fields for uncritical machine environments. |
| ** Tested enhanced protection against stronger electromagnetic fields and wireless communication equipment with our E2A for all factory environments. |
Cable induced disturbances
| Issue: Similar to electromagnetic fields, devices in machines may cause current or voltage drops or increases in the electrical circuit that may cause false output signals. In addition accidental wrong wirings may damage unprotected sensors. |
| Solutions: |
| * Market standard: basic protection against cable induced disturbances for unchallenging electrical circuits and machine environments. |
| ** Added protective circuits against power surges and wrong polarisation and tested enhanced protection against inverter noise with our E2A for wrong wiring and electrical circuits with potentially disturbing devices. |
Changing temperatures
Changing temperatures – performance
| Issue: Temperature variations in machines resulting from the operation, from usage in different regions or even from daily or seasonal fluctuations are very common. The performance and specifications of electronic components are significantly influenced by the ambient temperature resulting e.g. in variations of the sensing distance. The design of electronic circuits, the usage of compensatory elements and the balance of used parts play a vital role in reducing the sensor performance variations due to changing temperatures. |
| Solutions: |
| * Market standard: basic temperature compensation for standard factory environment. |
| ** Designed-in enhanced temperature compensation elements with our E2A for higher operational stability in machine and factory environments even with higher temperature variations. |
| *** Highest temperature influence immunity by separating the sensing head from the electronic parts with our E2EC and E2C for high precision positioning applications with minimal influence by changing temperatures. |
Changing temperatures – lifetime
| Issue: Rapidly changing temperatures and different expansion coefficients can lead to mechanical stress between connecting materials leading to mechanical damage or faster aging. |
| Solutions: |
| * Market standard: sensors designed for standard factory environments – faster aging or damages may occur with frequently or rapidly changing temperatures. |
| ** Designed-in and tested enhanced lifetime with our E2A for machine and factory environments with frequently or rapidly changing temperatures. |
| *** Tested combinations of temperature and mechanical stress for special applications or certifications. |
Breakage protection
Cable breakage protection
| Issue: Cable damages can be caused by too high pulling force, bending issues (too tight, too frequent, in cold temperatures) or accidental mechanical damage and can result in electrical wire breakage, short circuit or water entry into the main housing. |
| Solutions: |
| * Market standard: basic protection for minimal bending operations and soft pulling forces |
| ** Cable breakage protection with our E2A for frequent bending operations and stronger pulling forces |
| *** Robotic cable or thicker cables for very frequent bending operations or strong pulling forces |
Connector breakage protection
| Issue: Connector damages can result from too high mounting torque when screwing on a cable connector, a too high pulling force on the cable after mounting or from accidental mechanical damage and can result in connector breakage, water entry into the main housing or internal electrical wire breakage. |
| Solutions: |
| * Market standard: basic protection for normal handling operations |
| ** Tested connector breakage protection with our E2A for occasional too high torque or force application |
| *** Optional added connector protection with our E2A for frequently applied too high torque or force application |
Mechanical protection
Body – mechanical protection
| Issue: The body of a sensor may be damaged if too high torque is applied to mounting nuts or from accidental mechanical damage and can result in water entry (via cracks or microcracks) or complete product breakage. |
| Solutions: |
| * Market standard: basic protection for IP67 under normal handling conditions |
| ** Tested vibration and mechanical shock resistance and enhanced IP69k protection with our E2A in conditions with occasional higher vibrations, rough handling or cleaning |
| *** Additional tests with our special E2A under more demanding conditions with frequent vibrations, rough handling and frequent water sprays or cleaning |
Sensing face – mechanical robustness
| Issue: Sensing face damages can be caused by object impacts or frequent brushing. The results can be functional damage, sensing distance change or water entry. |
| Solutions: |
| * Market standard: basic mechanical protection for normal handling operations |
| ** Tested enhanced robustness for our E2A line for occasional stronger impacts |
| *** Highest robustness with the E2FM steel sensing face for frequent heavy impacts |
