ThermoWorks, Inc.1762 W. 20 S. #100

Lindon, UT 84042ph: 801-756-7705

www.thermoworks.com

8689 pH Meter

File and keepIt is recommended that you

before using to clear up the lazy effector to make the electrode wet if the pHelectrode dries out.

Check

will

Loosen

old

It is recommendedthe meters

C

s

keep

This meter will shut off automatically after20 minutes of inactivity. For operating alonger period of time, you can disablethe sleep mode.

NOTE: The sleep mode will reset afterevery power off.

After re-calibration, checking probe slopeand offset value may help to confirm

While

Before calibration, it is recommended thatyou RESET the meter to delete all oldcalibration information.

Caibration is necessary and should be doneregularly. It is recommended that this bedone everyday if the meter is used often.The unique calibration design of the meterfeatures automatic buffer recognition toavoid errors.

It is recommended tocalibrate pH7 first and then 4 or 10pHfor better accuracy result.

It is recommended to change theprobe when:

a

Step 1: Loosen the washer

to lengthen pH electrode life.

1) Make sure the duration ofpressing the power key ismore than 0.3 sec.2) Make sure the batteriesare in place and make goodcontact and correct polarity.3) Remove batteries for oneminute and reinstall again.

The reading is constant

5) Move to another room and try again.

Solution: Power on meter four times,

Solution: Power on meter four times,

Solution: Power on meter four times,

Check whether the reading is on HOLD

CONTACT

ThermoWorks, Inc.1762 W. 20 S. #100Lindon, UT 84042ph: 801-756-7705fax: 801-756-8948

www.thermoworks.com