ELSNER 70153 KNX SO250 KNX basic tank sensor

The KNX SO250 basic ultrasonic sensor, ELSNER code 70153, is designed for measuring the filling level of liquids in tanks and for measuring distances. This device is particularly versatile and can be used in various areas, such as rainwater tanks, fuel tanks, fish ponds or wells, and also for monitoring the parking distance for trucks.

Key Features

• Measurement of distance and filling level in spherical, rectangular and cylindrical tanks.
• Possibility to configure multiple tanks of the same type as a battery.
• 5 switching outputs with adjustable threshold values, which can be set using parameters or communication objects.

Configuration and Operation

The device is configured using the KNX ETS software. The ultrasonic sensor is heat resistant and can be used with water and heating oil. The sensor head has a diameter of about 60 mm and a total height of about 45 mm, with a coaxial RG 58 connector and a 10 m long BNC cable, extendable up to 40 m.

Technical Specifications

• House: Plastic, white color.
• Degree of protection: IP20.
• Dimensions (W x H x D): 123 mm x 89 mm x 61 mm.
• Weight: approximately 345 g
• Ambient temperature: 0°C... +45°C.
• Ambient humidity (non-condensing): 0... 95%.
• Storage temperature: -25°C... +70°C.
• Protection class: II.
• Overvoltage category: III.
• Degree of pollution: 2.

Characteristics of the KNX Bus

• Medium: TP1-256.
• Setup mode: S-Mode.
• Maximum group addresses: 254.
• Maximum allocations: 255.
• Communication objects: 57.
• Nominal voltage: 30V DC SELV.
• Power consumption: ≤ 12 mA.

Use and Applications

The device is designed to be installed in dry conditions and can be used in a variety of applications, such as dry protection, overflow alarm, and fill level monitoring. The direct view indicates the distance or filling level, and the integrated keyboard allows the selection of the tank size and the setting of the switching outputs.