Sensors for factory automation hero

BE-R particular use sensor

Liquid level detection.

Liquid level detection

  • Reliable detection of liquids with a thru-beam type
  • No malfunctions caused by crystallization or corrosion
  • Non-contact detection of fluid media
  • Tanks can be exchanged without the need for re-adjusting the sensor
  • PNP and NPN output types available


Type NPN output PNP output
Model No. BE-R1 BE-R1-P
Sensing range 5m without container or pipe (the sensing range becomes shorter depending on the thickness, material, color, etc., of the container or pipe)
Sensing object Min. ø12mm aqueous liquid or opaque object
Supply voltage 12 to 24V DC ±10% including ripple max. 10% (P-P)
Current consumption Emitter/receiver: max. 25mA
Output NPN open-collector transistor
  • Maximum sink current: 100mA
  • Applied voltage: max. 30V DC (between output and 0V)
  • Residual voltage: max. 1.5V at 100mA sink current, max. 0.4V at 16mA sink current
PNP open-collector transistor
  • Maximum source current: 100mA
  • Applied voltage: max. 30V DC (between output and +V)
  • Residual voltage: max. 1.5V at 100mA source current, max. 0.4V at 16mA source current
Output operation Light-ON or Dark-ON (switchable)
Short-circuit protection Incorporated
Response time Max. 12ms
Operation indicator Orange LED on the receiver (lights up when the output is ON)
Stability indicator Green LED on the receiver (lights up under stable light received condition or stable dark condition)
Power indicator Orange LED on the emitter (lights up when the power is ON)
Sensitivity adjuster Continuously variable adjuster
Pollution degree 3 (industrial environment)
Degree of protection IP67 (IEC)
Ambient temperature 0 to +55°C (no dew condensation or icing allowed), storage: -30 to +70°C
Ambient humidity 35 to 85% RH, storage: 35 to 85% RH
Ambient light Sunlight: 10,000ℓx at the light-receiving face, incandescent light: 3,000ℓx at the light-receiving face
EMC EN 50081-2, EN 50082-2, EN 60947-5-2
Emitting element Infrared LED (modulated)
Material Polycarbonate
Cable 0.2mm2 3-core (emitter: 2-core) oil-resistant cab tire cable, 2m
Cable extension Extension up to 100m is possible for both emitter and receiver with a cable with min 0.3 mm2
Weight Emitter: 45g approx., receiver: 50g approx.



Sensors BE-R particular use sensor applications Panasonic Industry
  • Detection of the maximum level
  • Detection of serum or plasma in a test tube


Name File Type Size Date Language
PDF BE-R series: Photoelectric sensor for detection of liquids Data sheet 212.2 KB 08.03.2018 English
PDF Brochure "Focus Automazione" Catalog, Shortform 3.1 MB 01.04.2022 Italian
PDF Catálogo Resumen Sensores Data sheet 29 MB 28.04.2021 Spanish
Raccolta Applicazioni Sensori Data sheet 24.2 KB 20.12.2018 Italian
PDF Sensor Selection Guide for Packaging Industry Catalog 14.7 MB 12.07.2022 English
PDF Sensors & Ionizer Solutions Catalog for Laboratory Automation Catalog 1.8 MB English
PDF Solutions for Liquid Dispensing Processes. For Clinical Diagnostics Instruments. Catalog 3.3 MB 18.11.2021 English