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1 <br />I' <br />' <br /> TAffiE 6 (Cbn <br />t) <br /> CALT~tATICN CH+ FIELD IL~SI4i~i1'A7ZQi <br />~~ <br />1 <br /> Peira®eter General Calibration <br />' Conductivity <br /> <br /> Elites the make, 1) Check the cell constant periodically <br /> model, serial and/ per manufacturer's instructions. If <br /> or ID number for the cell test indicates low readings <br /> each metes in a the probable cause is dirty electrodes <br />' log book. If cleaning does not re$tore pzabe <br /> performance, re-platinizing is <br /> required. Cleaning and re-platinizing <br /> must be done according to manufac- <br />' turer's instructions. <br /> 2) Rinse Dell after each sample to pre- <br />' <br />3) vent carryover. <br />Check the meter using a KCl standard <br /> before taking to the field. <br />' 'nam~erature <br /> ErtGer the make, 1) Check general condition of thermo- <br /> model, serial meter. <br /> number and tear 2) At least once per year egch thermo- <br />' perture range for meter shall be checked at two <br /> each thernns~ter. temperatures against an Nffi thermo- <br /> All ~a*Y7a**j~2ation meter. Temperature readings shall <br />' shall be against an agree within 1°C or the thernKnreter <br /> Nffi or NBS tali- shall be replaced or rec~librated. <br /> brated thernrxneter. <br /> Readings should <br /> agree within 1°C. <br /> All data shall be <br /> read to the nearest <br />' 1°C. <br />1 <br /> <br /> <br /> <br /> <br />