💡 3 Key Takeaways

5-gas detectors need 6 to 12 month calibration for accurate measurement.
Two calibration paths: KOLAS certified vs in-house, used for different purposes.
WANDI EDW500 has in-house calibration authority — 5 business days turnaround minimizes operational downtime.

Why Calibration Matters

Gas sensors degrade over time with sensitivity decay, zero drift, span drift, and slower response. Calibration corrects these errors with reference gas, restoring measurement accuracy. Without calibration, a 5-gas detector may display incorrect readings, endangering workers.

📅 Calibration Frequency

General industrial use (1-2 times/week): annually
High-frequency use (5+ times/week): every 6 months
High-concentration gas exposure: every 3-6 months
After impact, drop, or water exposure: immediately

🔍 KOLAS vs In-House Calibration

KOLAS: International certified (ISO/IEC 17025), KRW 250K-750K, 2-4 weeks turnaround. Required for government bids, ISO audits, legal disputes.
In-house: Manufacturer/seller self-calibration, KRW 100K-200K (5 gases), faster (5 business days at WANDI). Sufficient for most industrial sites.

📝 Calibration Records & 2024 Legal Requirement

Korea's 2024 OSH amendment mandates 3-year retention of measurement records, including calibration. Required data: date, model/serial number, before/after readings, reference gas info, calibrator info, next calibration date. EDW500 auto-generates compliance certificates and stores records in DCMS cloud.

🏆 EDW500 In-House Calibration Advantages

5 business days turnaround (vs 2-4 weeks outsourced)
Domestic parts inventory for immediate sensor replacement
One-stop calibration + inspection + repair
KOLAS certificate optional add-on
Auto-recorded in DCMS cloud

💡 Why Auto-Email Is the Game Changer

Calibration records auto-email every 3 months with measurement data. The email inbox becomes the 3-year backup — legal retention automated. Rare feature among 5-gas detectors.

Related Guides

📖 5-Gas Detector Complete Guide 2026
📖 Korean OSH 5-Gas Mandatory Measurement
📖 5-Gas Detector Price Guide
📖 5-Gas Detector TOP 5 Comparison

Closing — Calibration Is the Worker's Safety Line

Calibration isn't just paperwork; measurement accuracy directly equals worker safety. Schedule every 6-12 months and choose suppliers with in-house calibration authority.