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Y17..�" Q�•a <�r Y�.fa:fi" ram -�:'� .�, �.e:;,w� '�` •�� .r u.. <br /> �• - ES BNGINEERING•SCIENCE - <br /> • r�2P�IQL: y <br /> AIR ::CML"4.*_SG c.:�ULPy�iT <br /> 7%=BRAT-C:I n:la MAIU7MIANCE <br /> ?=QOI]L--MI <br /> All monitoring izsrsUmencs must =e calibrated 4nd nainrained <br /> ?arzodicaill.y. The Limitations and =assible, tiources of errors for each <br /> tnstrumont must be understood by the operator. It is important t:>at the <br /> overator ensurnm that the instrument responds properly to the substances <br /> it 'dau designed tm monztor. Below are the caltbrar.Lon and mainteaance <br /> procedures _or the �itatavae=eCP [I 7hotoLonizaraan letectmr and <br /> 31asensar,t_ camoustible gas _ndieator. <br /> PHOTOVAC-IiIP IT <br /> The photcxontzation detector must be calibrated each day prior to <br /> use in the field. A claibration gas (100 ppm tsobutylene) will be taken <br /> tato the field to perform routine calioration. calibration procedures <br /> for the Photaven-TIP are as follows: <br /> 1. Turn the instrument on." IE ^the 'law bat" indicator appears. <br /> the battery must be charged prior co using (time to full <br /> recharge is approszmately 16 hours). Allow tie Lnsrsument <br /> several minutes far the pump to come on and Ear the ion cell to <br /> I coma into equi,Li.brxum. <br /> Z. Zero the instrument: Loosen the black locking rings (turn thea <br /> clockwisel an both the "ZERA" and "SP1-,N" knobs. Set the "Sp1m' <br /> knob to "5" and lack (turn the Lacking ring counterclockwise). <br /> )text set+ the liquid crystal display to sero by tur3sing the <br /> "ZERO" knal , Lack the "ZERO" knob into place by ruining the <br /> Locking ring cauntP-relOCkVL-qe. <br /> 3. Calibrate case instrument: ?ill the plastic bladder with <br /> calibraton gas (not too full.) and attach tt to tate phatovae <br /> via a teflon tsizing and Locking nut. Allow a moment for <br />