COMPLIANCE INFO_1993-1994 - Laserfiche WebLink

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AIR MONITORING EQUIPMENT CALIBRATION AND MAINTENANCE INTFAMCTION All monitoring instruments must be calibrated and maintained periodically. The limitations and possible sources of errors for each instrument must be understood by the operator. It is important that the operator ensures that the instrument responds properly to the substances it was designed to monitor. Below are the calibration and maintenance procedures -for the GasTech Model 1314 combustible gas indicator. GASTNCH MODEL 1314 COMBUSTIBLE GAS INDICATOR The combustible gas indicator must be calibrated each week. The procedure for calibrating the combustible gas indicator is listed below: 1. Attach the 0.5 liter per minute fixed flow rate regulator to the calibration gas cylinder. 2 . Attach a sample line from the regulator to the balloon inlet. Attach another sample line from the balloon outlet to the sample draw intake on the instrument. 3. Fill the balloon with calibration gas and allow the sample draw prompt to draw it over the sensors . DO NOT OVER INFLATE BALLOON! Feed more gas into the balloon as needed to keep it partially inflated. 4. Wait for the reading to stabilize. Then, using a small jewelers screwdriver, adjust the "gas span" control to obtain a steady reading which corresponds to the calibration gas concentration that is printed on the label of the calibration gas cylinder (Normally 50% LEL) . 5. Remove calibration lines. 6. Let the instrument run for one full minute to flush any excess calibration gas and check readings . The combustible sensor should now be ready 000% LEL (+ 001% LEL) , in fresh air. Repeat calibration procedures if necessary. 7 . Combustible calibration complete. GasTech Model #1314 uses a 9 volt Ni/Cad battery. This battery should be recharged as use dictates . The battery cannot be overcharged.