Operating Instructions - Snap-on Equipment
Operating Instructions - Snap-on Equipment
Operating Instructions - Snap-on Equipment
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3GPC MaintenanceGas Calibrati<strong>on</strong>This secti<strong>on</strong> discusses several maintenance tasks.• Gas Calibrati<strong>on</strong>, page 3G-1• Leak Check, page 3G-3• Zero Calibrati<strong>on</strong>, page 3G-5• New NOx Sensor, page 3G-5• Shop Informati<strong>on</strong>, page 3G-7• Setup, page 3G-8— General Setup, page 3G-8— Standards, page 3G-14— Diagnostics, page 3G-15During normal operati<strong>on</strong>, a gas analyzer should be calibrated periodically to ensureaccurate gas measurement. The gas bench is calibrated using a specialcompositi<strong>on</strong> of gases that have been certified for c<strong>on</strong>centrati<strong>on</strong>. Calibrati<strong>on</strong>intervals may vary depending <strong>on</strong> the applicati<strong>on</strong> and use, but quarterly as part ofroutine maintenance is recommended, more frequently with heavy use.The two gases recommended for calibrati<strong>on</strong> are Bar97 Mid 2 Gas and Bar97 HighGas, compositi<strong>on</strong> as follows:Bar97 Mid 2 GasBar97 High GasPropane 1920 ppm 3200 ppmCO 4.80% 8.00%CO 2 7.20% 11.00%NO 1800 ppm 3000 ppmTo begin Gas Calibrati<strong>on</strong>,1. Press the Calibrati<strong>on</strong> butt<strong>on</strong> and choose Gas Calibrati<strong>on</strong> from the menu.✓ Verify the calibrati<strong>on</strong> bottle is not c<strong>on</strong>nected or turned <strong>on</strong>.3G-1
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