Extech Instruments PH220 User Manual
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Extech Instruments PH220 User Manual

Waterproof palm ph meter
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USER MANUAL
Waterproof Palm pH Meter
Model PH220

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Summary of Contents for Extech Instruments PH220

  • Page 1 USER MANUAL Waterproof Palm pH Meter Model PH220...

  • Page 2: Specifications

    The PH220 simultaneously displays pH and temperature. The rubber holster which protects the meter has a magnetic backing for convenient mounting. The built-in memory (25 readings) allows STORE, RECALL, and CLEAR functionality.

  • Page 3: Meter Description

    1. Calibrate the instrument as described in the Calibration section. 2. Select the temperature units of measure as explained in the pH measurement instructions. 3. Carefully follow all step by step instructions and electrode cleaning/rinsing recommendations. Slight deviations in procedures can significantly affect test results. PH220-en-US_v3.5 3/21...

  • Page 4: Calibration (Ph)

    When in pH measurement mode, the ‘CAL’ icon will appear if a calibration has not been performed after 15 ON/OFF cycles of the instrument. The ‘CAL’ display is a only a reminder and will turn off when the electrode is calibrated (the reminder does not affect operation). PH220-en-US_v3.5 3/21...

  • Page 5: Automatic Temperature Compensation (Atc)

    Automatic Temperature Compensation (ATC) The millivolt output of a pH electrode varies with temperature, and so the meter must compensate for these variations. The PH220 automatically compensates for solution temperature changes with the electrode’s built-in thermometer. The temperature compensation is active when the solution temperature deviates from room temperature. The temperature of a solution is displayed on the lower LCD line.

  • Page 6: Storing And Recalling Readings

    Press and hold the STORE/RECALL button for 2 seconds to exit. The instrument will display ‘SA’ (save) and ‘End’ before returning to the normal operation mode. The temperature display will now indicate the actual temperature ± the offset value. PH220-en-US_v3.5 3/21...

  • Page 7: Battery Replacement

    Insert the battery compartment into the instrument until the compartment is flush with the top of the instrument. The compartment can only be fully inserted in one direction; the battery compartment is labeled showing the correct orientation. Replace the protective holster. PH220-en-US_v3.5 3/21...
  • Page 8 Samples have low ionic strength For each 50 ml of sample add 1 drop (50uL) of (low sodium); e.g. distilled, de- SAT. KCl (No alteration in pH will occur using ionized, boiled, or lake water inert KCl). (high pressure) PH220-en-US_v3.5 3/21...

  • Page 9: Two Year Warranty

    Contact Customer Support Customer Support Telephone List: https://support.flir.com/contact Calibration, Repair, and Returns: repair@extech.com 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 PH220-en-US_v3.5 3/21...

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