H2 gas sensor

COVOCsemiconductor

Overview
The Li-ion Tamer Sensor MOS is an off‑gas detection device for lithium‑ion batteries that senses hydrogen (H2), carbon monoxide (CO) and initial electrolyte solvent vapours released during early stages of thermal runaway. Early detection enables targeted mitigation to prevent catastrophic battery failures in modular Battery Energy Storage Systems (BESS) and other critical installations.

Features

• Early warning of lithium‑ion battery failure modes
• Enables thermal runaway prevention through timely mitigation actions
• Single‑cell failure detection without electrical or mechanical contact
• Calibration‑free operation (requires only bump test for verification)
• Low power consumption and long service life
• Highly reliable, redundant output signalling
• Reduction of false positives for improved operational reliability
• Cost‑effective solution for modular BESS and rack systems
• Compatibility with all lithium‑ion form factors and chemistries
• Easy installation and integration into monitoring architectures
• Supports 2 alarm relay outputs and 1 fault relay output
• Configurable communication: relay outputs, Modbus or CANbus selection

Applications

• Stationary Battery Energy Storage
  • Small‑footprint modular BESS (modular cubes, single battery racks, etc.)
• Data Centers
  • Battery UPS rooms and critical power systems
• Manufacturing
  • Battery assembly lines
  • Formation processes
  • Cell aging and EOL testing
  • Module and pack assembly
• Automotive
  • Vehicle test facilities and battery validation labs
• Laboratory Safety
  • Environmental chambers and abuse testing
• Shipping and Storage
  • Post‑manufacturing storage and battery‑powered equipment

Certifications & Approvals

• Off‑Gas Sensor: UL 2075 and ULC 588 recognized for Hydrogen detection
• Off‑Gas Sensor: UL 2075 and ULC 588 recognized for Carbon Monoxide detection (model‑dependent)
• Off‑Gas Sensor: UL 2075 and ULC 588 recognized for battery electrolyte solvent vapour detection (including DEC, DMC, EMC)
• FM 6540 approved for battery electrolyte solvent vapours (model specific)
• ETL listed to UL 61010 and CSA 22.2 No. 61010 for product safety
• EN 61326 (EU EMC compliance)
• RoHS 3 (EU 2015/863)
• CE, UKCA, FCC, CSFM (where applicable)
• Interface module certifications include UL864, ULC S527, FM 6540 and relevant safety/EMC standards

Available documentation (titles)

• Li‑ion Tamer Sensor MOS Data Sheet
• Li‑ion Tamer Sensor MOS Product Bulletin
• Li‑ion Tamer Sensor MOS User Manual
• Li‑ion Tamer GEN 2+ Off‑Gas Monitor User Manual (English & French Canada)
• Li‑ion Tamer Sensor MOS Engineering Specifications
• Li‑ion Tamer Sensor MOS Cable Fabrication Application Note
• Li‑ion Tamer Sensor MOS FAQs
• Li‑ion Tamer Sensor MOS Product Brochure
• Application case studies (BESS Container, BESS Modular Cubes, Telecom Data Center UPS Room)
• Interface Module configuration software and certificates of conformity

Technical specifications

• Detectable substances: Hydrogen (H2), Carbon Monoxide (CO), electrolyte solvent vapours including Diethyl Carbonate (DEC), Dimethyl Carbonate (DMC), Ethyl Methyl Carbonate (EMC)
• Outputs: 2 alarm relay outputs and 1 fault relay output
• Communication: Configurable (relay outputs, Modbus, CANbus)
• Calibration: Calibration‑free; bump test recommended for verification
• Power: Low power consumption (see engineering documentation for values)
• Detection capability: Single‑cell failure detection without physical contact
• Compatibility: All lithium‑ion battery form factors and chemistries
• Installation: Simple installation, cost‑effective for modular BESS
• Reliability: Designed to reduce/remove false positives and provide a highly reliable output signal
• Approvals: UL 2075, ULC 588, FM 6540 (where specified), ETL to UL 61010, CE, UKCA, FCC, RoHS 3; interface module approvals include UL864, ULC S527