Solid-state Level Switches

Our Bulletin 840E Solid-state Level Switches are microprocessor-based and designed to withstand harsh industrial conditions and wash-down applications such as liquid level monitoring in tanks, containers and pipelines. These switches are available in both AC and DC versionsm are not affected by foam, and are immune to vibration and build-up.

Bulletin 840E Solid-state Level Switches
  • Overview
  • Product Selection
  • Specifications
  • Documentation
  • Resources
  • Applications

Features

  • Rugged, corrosion-resistant 316L stainless steel housing with IP66/67 rating for DC-type and IP65 rating for AC-type enclosures
  • DC PNP version with M12 connector
  • AC version with NPT 1/2 inch valve connector
  • 316L stainless steel sensing element
  • On-site control via high-visibility status indicator
  • Discrete NO/NC level switch based on ultrasonic vibrating fork technology

To view commonly ordered and quickly available products, use the Product Configuration Assistant for our complete product offerings.

Certifications

  • CE Marked for all applicable directives
  • cCSAus Certified

Certifications apply when product is marked. See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Documentation

TitleNumberDownload
Condition Sensing Brochure836E-BR001
Solid-state Level Sensors Installation Instructions840E-IN001
More Condition Sensing publications in Literature LibraryAll Languages

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Product Certifications

See our Product Certification site for Declarations of Conformity, certificates and other certification details.

Configuration & Selection Tools

  • CrossWorks — Convert competitive catalog numbers to similar Allen-Bradley® products.
  • ProposalWorks — Build complete quotes and proposals.

Other Resources

  • Procurement Specifications — Visit our online resource to find the procurement specifications for this product.
  • Knowledgebase — Visit our online resource for technical information, support chat and forums, software updates, and product safety advisories/notices.


Applications

Used primarily for liquid level detection in industries such as factory automation, oil and gas, chemical, food and beverage and automotive industries. Housed in rugged, corrosion-resistant 316L stainless steel enclosure, this cost-effective compact level switch is suitable for most fluid applications including:

  • Liquid level monitoring
  • Tanks, containers and pipelines
  • Filtering systems
  • Coolant and lubricant tanks
  • Pump protector program support

See how the 840E Solid-state Level Switches are used in water treatment applications:

Customer Success