ELSNER 70153 KNX SO250 basic ultrasonic tank probe

Knx Level sensor


The KNX SO250 basic ultrasonic probe is used to record the fill quantity of liquids in tanks and to measure distances. The probe head is resistant to heating oil and water and can e.g. B. be used for water storage, ponds or oil tanks. Five limit values ​​can be set for filling, emptying, dry run protection and overflow reporting.

– Distance measurement
– Level measurement in spherical, rectangular and cylindrical tanks. Several tanks of the same type as a battery
– 5 switching outputs with adjustable limit values ​​(limit values ​​are set either by parameters or via communication objects)

Scope of delivery:
– Evaluation unit in a modular housing
– Ultrasonic probe with 10 m connection cable

Technical data:
Evaluation device:
Housing: plastic
Color: white
Installation: series installation on top-hat rail Protection
class: IP 20
Dimensions: approx. 123 x 89 x 61 (W x H x D, mm), 7 TE
Weight: approx. 345 g
Ambient temperature:
– Operation: – 5 degrees Celsius to +45 degrees Celsius
– Storage: -25 degrees Celsius to +70 degrees Celsius
Humidity: max. 95% RH, avoid condensation
Operating voltage: 230 V AC, 50 Hz
Power consumption: max. 4 W
Outputs KNX data: 2 x relays, potential-free normally open contacts, max. 250 V AC / 7 A
data output KNX: +/- bus
plug-in terminal bus current: max. 16mA
BCU type: own microcontroller
PEI type: 0
Group addresses : max. 254
Assignment: max. 255
communication objects: 57

Ultrasonic probe:
Housing: plastic
Color: black
Protection class: IP 52
Media resistance: water, heating oil
Dimensions: total diameter approx. 60 mm | Total head height approx. 45 mm
Thread: 1½ inch
Connection cable: coaxial cable RG 58, length 10 m
Total weight: approx. 400 g
Ambient temperature: +0 degrees Celsius to +40 degrees Celsius
Measuring range: 12 to 250 cm


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