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<br /> S`I'ANDAM) 01TRATINO PROCT-IDURI S
<br /> r.,
<br /> No.r}(H12
<br /> TITLE.: Use and Calibration of OVM Meter (I'll))
<br /> l'UMIOSG: This SOP is designed to provide guidelines for(lie use and calibration of tlic OVh1/1111)
<br /> meter. Potential hazards will be addressed in (lie:stt:kchcd .in)Safely Analysis (}SA).
<br /> { I1I-CirSSARY EQUIPMENT:
<br /> 1 OVMMID Meter
<br /> I
<br /> 1 calibration G:ks
<br /> Extra Battery
<br /> I Real-Time Instrumentation l7ata Log
<br /> Calibration 1,01'
<br /> Operations Manual
<br /> Field Log
<br /> l 'r Battery Chorger
<br /> LIMITATIONS:
<br /> t '
<br /> 1. If the 1p of a chemic:d contaminant is greater than the UV light source, this chemical villi not
<br /> i
<br /> ! be recorded. Some conlain inartts cannot be'recorded by qtly sertisor/lkre,bes.
<br /> ?. It should be noted, specifically, that the OVM (PID) will not detect methane.
<br /> } 3. During cold weather, condensation may farm on the UV light source window, resi;ttsng in
<br /> erroneous results.
<br /> 0 4. Instrument readings can be affected by humidity=knd powerlines,makis,g it difficult to interpret
<br /> rca d i ass.
<br /> t S. Total concentrations arc relative to ilio conccntNttion gaS(usually benzene) uSel. `1'hercfnre,
<br /> true contaminants and their quantities cannot be identified. Also, while the instrumesit scale
<br /> t reads 0 to 2,000 ppm, response is linear (lo benzene) from 0 to about 600 ppm. Greater
<br /> y concentrations may be"read" at a higher or lower level than the true value.
<br /> G. Wind speeds of greater than 3 miles per hour may affect tan speed and readings,depending on
<br /> the position of the probe relative to the wind direction.
<br /> o:r
<br /> 7. The actual operating instructions issued by the manufacturer should always he atsed, :ls these
<br /> t '
<br /> are regularly updated, and may affect instrument,varr.knty.
<br /> 5
<br /> ` WORK SAFELY... RYAD TI IF,JOB SAFETY ANALYSIS
<br /> A-22
<br /> i��
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