YSI Pro 1020 Manuals

IOP 019B.0 Effective Date: 1/26/2017 Page 1 of 8 U.S. Fish and Wildlife Service Marquette Biological Station 3090 Wright Street Marquette, Michigan 49855 U.S.A. and U.S. Fish and Wildlife Service Ludington Biological Station 5050 Commerce Drive Ludington, Michigan 49431 U.S.A. and Department of Fisheries and Oceans Sea Lamprey Control Centre 1219 Queen Street East Sault Ste. Marie, Ontario P6A 2E5 Canada INSTRUMENT OPERATING PROCEDURE INSTRUMENT: Multiparameter Water Quality Instrument MODEL: - Pro 1020 Meter (6051020) - Cable (6051020) - Probes: pH (605101), DO (605203) MANUFACTURER: Yellow Springs Instrument Co., Inc. (YSI) PRECAUTIONS: POTENTIAL INTERFERENCES General – - Greatest accuracy is achieved if the actual samples to be measured are within 10 ˚C of the calibration solutions. - Longer cable lengths introduce more error into the readings. Dissolved oxygen – - Chlorine, sulfur dioxide, nitric oxide, and nitrous oxide can affect readings by behaving like oxygen at the membrane. - Static electricity may affect readings. - Gold Cathode - The gold cathode on the sensor must be textured properly. It may become tarnished or plated with silver after extended periods of use. - Bubbles under the membrane cap will affect readings. - Excessive water in calibration/storage sleeve will affect calibration.