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Measurement and monitoring relays to protect your entire plant

OMRON’s K8 monitoring relays offer reliable motor protection, temperature monitoring, and liquid level control across diverse applications. This is achieved through:

  • Vibration resistance: Built to withstand harsh conditions 
  • No interference: Functions seamlessly without disruption from nearby inverters 
  • Long-term contact reliability: Reliable for the lifetime of your equipment 

For over 50 years, OMRON has been a leader in monitoring and control technology, with the K8 series standing out for protecting motors, heaters, and water levels. The product range can be divided into models for single-phase current and voltage control, three-phase voltage control, conductive level, liquid level and temperature alarm.

3 strategies to protect your plant

How to use using monitoring relays to protect your entire plant? Even the failure of a single component can have a massive impact on operations. Our whitepaper explores three practical strategies and practical examples for deploying monitoring relays across various manufacturing environments.

Tailored specifically for technical managers, this whitepaper presents a practical four-step framework for smarter maintenance integration. Download it now to optimize operations and drive operational excellence.  

Minimize costly downtime & protect your plant today! #MakeitExcellent 

OMRON’s measuring and monitoring technologies, including the K8 series, are known for their reliability. These relays protect your critical assets by preventing phase loss, incorrect phase sequence, and more, ensuring optimal system performance.

Klaus Zeller

Product Manager OMRON

OMRON's K8 monitoring relays consists of:

  • Type
K8DT-LSx

Liquid Level Monitoring

Sensitivity adjustment from 10k to 100 kΩ for a wide range of liquids, relay output

Prevents abnormal water levels in critical systems across the food & beverage, chemical, and water infrastructure industries

  • Type K8DT-LS Liquid Level Monitoring
K8DS-PH1

Motor Protection (1-phase and 3-phase)

3-Phase 200 to 480 VAC sequence and phase loss monitoring

Ideal for machine tools, conveyors, and food machinery

  • Type K8AK-PH1 Monitoring Relay
K8DT-TH1

Temperature Monitoring

Thermocouple or Pt100 intput type, relay output.

Detects excessive temperatures in heaters for applications in ovens, molding, and semiconductor manufacturing.

  • Type K8DT-TH1 Temperature Monitoring

Datasheets and Brochures

Recognized Global Innovator 2024
Rated high, particularly for technical distinctiveness.

OMRON has been selected as one of the Top 100 Global Innovators 2024 for the eighth consecutive year having exemplified above-the-bar excellence in innovation.