Gas Detection Systems — ZOD Fire Safety
Early Warning for Toxic, Flammable & Oxygen Hazards

Gas & Fire Detection System

Fixed and portable fire detection system that helps you prevent incidents before they escalate—linked to alarms, ventilation and shutdowns for a coordinated response.

Overview

What we monitor
  • Toxic gases (e.g., CO, H₂S, NH₃)
  • Flammable gases & vapors (LEL monitoring)
  • Oxygen depletion/enrichment
Where it’s used
  • Boiler rooms, parking, cold rooms, chiller plants
  • Process areas, labs, battery and charging rooms
  • Tank farms, loading bays, confined spaces
Why it matters
  • Reduces exposure and ignition risk
  • Automates ventilation and shutdowns
  • Creates auditable safety records

Sensors & Technologies

Detection methods
  • Electrochemical (toxic gases, parts-per-million accuracy)
  • Catalytic bead (flammable gases, LEL %)
  • Infrared (hydrocarbons, stable in low-oxygen)
  • PID photoionization (solvent VOCs)
Form factors
  • Fixed area detectors with local indicators
  • Portable single/multi-gas meters for personnel
  • Sampling/aspirated systems for remote sensing

We help select the right sensor for the target gas, range, cross-sensitivity and environment.

Control Panels & Alarms

Alarming & automation
  • Multi-level alarms (pre-alarm, high, evacuation)
  • Fan start, damper close, valve/gas shutoff
  • Fire alarm/BMS integration and remote notifications
Visibility
  • Zone displays and trend logs
  • Event history for investigations and audits

Placement & Design Considerations

Sensor placement
  • Mounting height by gas density (rise/sink)
  • Near leak sources: valves, joints, chargers
  • Coverage of airflow paths and dead zones
Zoning
  • Divide by risk/activity for targeted actions
  • Separate alarm logic for safe evacuations
Documentation
  • Detector schedules and location plans
  • Cause-and-effect and test procedures

Calibration, Testing & Care

Routine tasks
  • Bump tests to verify response
  • Full calibrations on defined intervals
  • Filter/sensor replacement and cleaning
Records
  • Calibration certificates and event logs
  • Alarm reviews and trend analysis