Which component's expiry can cause the EC/IR II to disable?

Which component's expiry can cause the EC/IR II to disable?

• A. Battery
• B. Printer
• C. Dry gas canister
• D. Memory card

Answer: (C)

This test is about calibration gas validity and why the instrument will lock out if that gas is past its expiry. The EC/IR II relies on a dry gas canister as the reference standard for calibration and checks. That gas has a certified expiration date, and once it’s expired the device detects that the standard is no longer within specification. To protect accuracy and compliance, the instrument disables itself until a fresh, valid calibration gas is used and a new calibration (plus a post-calibration check) is performed. Battery life, printer, or memory card status can affect operation in other ways (power issues, output, or data storage), but they aren’t triggers that disable the instrument based on expiry. The key safeguard here is the calibration gas—expired gas undermines the reliability of readings, so the device won’t operate until the gas is replaced and recalibration is completed.

This test is about calibration gas validity and why the instrument will lock out if that gas is past its expiry. The EC/IR II relies on a dry gas canister as the reference standard for calibration and checks. That gas has a certified expiration date, and once it’s expired the device detects that the standard is no longer within specification. To protect accuracy and compliance, the instrument disables itself until a fresh, valid calibration gas is used and a new calibration (plus a post-calibration check) is performed.

Battery life, printer, or memory card status can affect operation in other ways (power issues, output, or data storage), but they aren’t triggers that disable the instrument based on expiry. The key safeguard here is the calibration gas—expired gas undermines the reliability of readings, so the device won’t operate until the gas is replaced and recalibration is completed.