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                                                   PH220-en-US_v3.5   3/21

 

 

Two-year Warranty  

FLIR Systems, Inc. warrants this Extech brand instrument to be free of defects in parts and workmanship for 
two years from date of shipment (a six-month limited warranty applies to sensors and cables). To view the full 
warranty text please visit

http://www.extech.com/support/warranties

. 

 

Calibration and Repair Services 

FLIR Systems, Inc. offers calibration and repair services for the Extech brand products we sell. We 
offer NIST traceable calibration 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 performance and accuracy. Product specifications are subject to change 
without notice. Please visit our website for the most up-to-date product information: 

www.extech.com

 

Contact Customer Support 

Customer Support Telephone List

https://support.flir.com/contact

 

Calibration, Repair, and Returns

[email protected]

 

Technical Support

https://support.flir.com

 

 

 

Copyright © 2021 FLIR Systems, Inc. 

All rights reserved including the right of reproduction in whole or in part in any form 

www.extech.com

 

 

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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