Compact High Speed Ultrasonic Sensor

QS18U Series

QS18U
QS18U
QS18U cable
QS18U Tube Filling Application

Low-cost ultrasonic sensor in popular WORLD-BEAM housing

  • Detects clear or transparent material and color variations
  • Senses within a 50 to 500 mm window with a 15 millisecond response time
  • Offers wide operating range of -20° to 60° C
  • Compensates for variations in air temperature
  • Delivers high accuracy in wet or dirty environments
  • Available in encapsulated models rated IP67 or IP68 for a range of harsh conditions
  • Offers 12 to 30V dc supply voltage with NPN or PNP output, depending on model
  • Features push-button TEACH for easy programming at the sensor or remotely
  • Includes bright LED operating status indicators visible from 360°

Technical Literature

Date
Type
Size
Wave Guide Accessory (UWG18-..)
7 Dec 2023
Datasheet
690K
Ultrasonic Sensor Comparison Chart
9 Jun 2022
Specifier's Guide
648K
QS18U Ultrasonic Series
28 Jul 2021
Datasheet
684K
Date
Type
Size
QS18U Ultrasonic Series (French)
06/02/22
Datasheet
721K
Date
Type
Size
QS18U Ultrasonic Series (German)
06/20/22
Datasheet
722K
Date
Type
Size
QS18U Ultrasonic Series (Italian)
06/20/22
Datasheet
715K
Date
Type
Size
QS18U Ultrasonic Series - Japanese
04/18/11
Datasheet
927K

Marketing Literature

Date
Type
Size
Sensor Selection Guide
Sensor Selection Guide
14 Jan 2025
Product Brochure
2.9MB
Life Science Industry Solutions Brochure
15 Jan 2024
Product Brochure
2.4MB
Ultrasonic Solutions Flyer
11 Jun 2013
Product Brochure
1.5MB
Liquid Soap Level Detection
Liquid Soap Level Detection

The WORLD-BEAM QS18U ultrasonic sensor monitors the level of soap in a tank in a car wash. The sensor is mounted atop the reservoir, aiming through the transparent top. The sound waves bounce off the surface of the liquid.

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Cable Length (m)

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IP Rating

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  • (10)

Connection

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  • (11)

Quick Disconnect Type

  • (11)
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Feature: Quick Disconnect

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  1. QS18UPAQ8

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    4-pin M12 Integral QD

  2. QS18UPAQ5

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    150 mm (6 in) 4-pin M12 Pigtail QD

  3. QS18UNAQ8

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    4-pin M12 Integral QD

  4. QS18UPA

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    2 m (6.5 ft) Cable

  5. QS18UNAQ5

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    150 mm (6 in) 4-pin M12 Pigtail QD

  6. QS18UNA

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    2 m (6.5 ft) Cable

  7. QS18UPAEQ8

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP; Epoxy-encapsulated
    4-pin M12 Integral QD

  8. QS18UNA W/30

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    9 m (30 ft) Cable

  9. QS18UPAE

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP; Epoxy-encapsulated
    2 m (6.5 ft) Cable

  10. QS18UPAQ7

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    4-pin M8 Integral QD

  11. QS18UPAQPMA

    logo with r symbol

    WORLD-BEAM QS18U Series Sensors
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    150 mm (6 in) 4-pin M12 Pigtail QD

  12. QS18UNAE

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN; Epoxy-encapsulated
    2 m (6.5 ft) Cable

  13. QS18UNAE W/30

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN; Epoxy-encapsulated
    9 m (30 ft) Cable

  14. QS18UNAEQ

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN; Epoxy-encapsulated
    150 mm (6 in) 4-pin M8 Pigtail QD

  15. QS18UNAEQ5

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN; Epoxy-encapsulated
    150 mm (6 in) 4-pin M12 Pigtail QD

  16. QS18UNAEQ8

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN; Epoxy-encapsulated
    4-pin M12 Integral QD

  17. QS18UNAQ

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    150 mm (6 in) 4-pin M8 Pigtail QD

  18. QS18UNAQ5 -CNBL01

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    500 mm (20 in) 4-pin M12 Pigtail QD

  19. QS18UNAQ7

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: NPN
    4-pin M8 Integral QD

  20. QS18UPA W/30

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    9 m (30 ft) Cable

  21. QS18UPAEQ

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP; Epoxy-encapsulated
    150 mm (6 in) 4-pin M8 Pigtail QD

  22. QS18UPAEQ5

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic remote TEACH
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP; Epoxy-encapsulated
    150 mm (6 in) 4-pin M12 Pigtail QD

  23. QS18UPAEQPMA

    logo with r symbol

    WORLD-BEAM QS18U Series Epoxy-Encapsulated
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    150 mm (6 in) 4-pin M12 Pigtail QD

  24. QS18UPAQ

    logo with r symbol

    WORLD-BEAM QS18U: Ultrasonic TEACH mode
    Range: 50-500 mm; Input: 12-30 V dc
    Output: PNP
    150 mm (6 in) 4-pin M8 Pigtail QD

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