Description
very reliable and simple sensors for scanning liquids, in particular when used for overflow protection. liquids can be aggressive, sticky or highly contaminated
Technical Data
Properties
- Protection class EN60529
- IP 54
- connection thread
- ab G2”
- Union nut
- ab G2¾”
- Container connection flange
- ab DN 25
- HoseØ
- 13x2 mm
- Operating temperature
- +60 °C
- medium temperatur
- max. +60 °C
- Contact
- Wechsler
- Switching capacity
- 500 VA
- Switch-on point (Viton membrane)
- 150 mm WS ±30 mm
- Switch-off point (MembraneViton)
- 90 mm WS ±30 mm
Material
- Hose
- PVC
- Screw fitting/grommet
- PVC
- flange
- PVC
- Connection head
- PVC
Switching voltage
- silver
- max. 250 V AC
- Gold
- max. 24 V AC
Switching current
- silver
- max. 6 A
- Gold
- max. 100 mA
NP-256 configuration
| NP25 | 1 | - | 2 | - | 3 | - | 4 | - | 5 | - | 6 |
Further product information
The switches can also be used for signaling minimum levels. They can be used only in open, pressure less containers, tanks etc. The level switches are supplied in PVC or stainless steel (1.4571) and have a membrane changeover switch of Viton which responds to excess pressure (150 mm water gauge).
Operational reliability of the switches when used as min-max switches and for protection against dry-running is guaranteed only if the containers, tanks etc are emptied or partially emptied at regular intervals, so that the air in the pressure tube can be renewed.
Owing to the high switching capacity, contactors, optical and acoustic signalling systems can be directly electrically controlled without an intermediate relay.
