Bacharach CO2 Analyzer 3150 Operation & Maintenance Instructions Manual

Bacharach CO2 Analyzer 3150 Operation & Maintenance Instructions Manual Manual pdf 44 page image

CO2 Analyzers 3100 & 3150Instruction 19-9339 448.3 User Calibration Trouble ShootingError RemedyUser Zero Failed A possible reason for this is because the instrument is trying tozero to a level which is outside the predetermined range set whenthe unit was calibrated at the factory. To rectify this, first ensurethe unit contains absolutely none of the gas which is being zeroedby flushing thoroughly with nitrogen. If it will not zero, then refer tothe instructions given in the “FACTORY SETTINGS” section. If theinstrument continues to fail to zero then the unit must be returned toyour nearest Bacharach Service Center for investigation.Calibration Failed Check that the span target is set to the correct value. If not, cor-rect and retry spanning the channel. Repeat the entire procedure,including zeroing the channel, and then calibrate the span. Ensurethat the reading is stable before spanning the channel.8.4 Cross-Gas EffectsCarbon Dioxide is measured by infrared absorption at a wavelengthspecific to carbon dioxide. Therefore, the carbon dioxide reading willnot be affected by any other gases. The oxygen sensor is a galvaniccell type and suffers virtually no influence from CO 2 , CO, H2 S, NO2 ,SO2 , or H2 , unlike many other types of oxygen cell.8.5 Hardware ResetIf for any reason the instrument ‘locks up’ and will not switch off, it ispossible to force a hardware reset. Press and hold the “ON/OFF” keyfor 10 seconds; wait at least 15 seconds and the instrument shouldrestart automatically.NOTE: Performing a hardware reset may cause loss or corruption ofcurrently stored data including the time and date.