Extech Instruments PH220 Скачать руководство пользователя | Manualshive

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USER MANUAL

Waterproof Palm pH Meter

Model PH220

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Содержание PH220

Страница 1: ...USER MANUAL Waterproof Palm pH Meter Model PH220...

Страница 2: ...y does not include pH buffer temperature coefficient Note 2 Accuracy specified from 0 02pH to 13 98pH Temperature Compensation 32 to 194oF 0 to 90oC Automatic ATC Power 9 volt alkaline battery Display...

Страница 3: ...perature Note that there are other more specialized displays discussed later in the appropriate sections of this manual Order of Operations 1 Calibrate the instrument as described in the Calibration s...

Страница 4: ...ibrated at least once each day pH Calibration Procedure 1 Place the electrode into a 7 00 pH buffer solution Press and hold the CAL button until CAL appears in the display 2 The instrument automatical...

Страница 5: ...also display when the electrode is disconnected 8 When the test is complete rinse the electrode with distilled or deionized water Automatic Temperature Compensation ATC The millivolt output of a pH el...

Страница 6: ...the recall mode is accessed 3 While in the RECALL mode use the STORE RECALL button to scroll through the stored readings The most recent readings will show first LAST IN FIRST OUT 4 Press and hold th...

Страница 7: ...the top of the meter ensure that the electrode is disconnected 3 Pry the battery compartment up from the top of the meter using a screwdriver or coin at one of the two indentations see diagram 4 Repl...

Страница 8: ...60oC for 30 minutes Strong Alkaline measurement Soak in 0 1 M HCL overnight Deteriorated Gel layer Replace electrode Protein coating on electrode surface Soak in 1 gm Pepsin dissolved in 100ml of 0 1...

Страница 9: ...bration for most of our products Contact us for information on calibration and repair availability refer to the contact information below Annual calibrations should be performed to verify meter perfor...

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