az-instrument 8690 Operation Manual
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az-instrument 8690 Operation Manual

Pen type ph meter
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OPERATION MANUAL
PEN TYPE
PH METER
DESIGN PATENTED:
US D453.905S
Model:
8690

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Summary of Contents for az-instrument 8690

  • Page 1 OPERATION MANUAL PEN TYPE PH METER DESIGN PATENTED: US D453.905S Model: 8690...
  • Page 2 INTRODUCTION Congratulations on your purchase of the unique shape of pH pen model 8690, the meter features dual display pH with ATC (Automatic Temperature Compensation ), only one touch for auto-calibration, easy read by 45 angle, the pH electrode module is replaceable.

  • Page 3: Controls And Indicators

    CONTROLS AND INDICATORS Primary Data Screen displays pH reading, calibration value. Secondary Data Screen displays temperature reading. C/ F Toggles display data from C to F or F to C. Replaceable pH Electrode . 5. Cover of the pH pen . 6.
  • Page 4 1. Remove the cap from the bottom of the meter to expose the electrode which is protected by a small transparent plastic cover. It is normal if you find white crystals are present on the cap or electrode assembly. Rotate the small cap in clockwise direction to expose the electrode.

  • Page 5: Auto Power Off

    AUTO POWER OFF (SLEEP FUNCTION) This instrument will shut off automatically in approx. 20 minutes for every power on. For recording or operating over longer periods of time, you can disable the sleep mode by pressing keys HOLD at the same time before power on and then release the power key.

  • Page 6: Automatic Temperature Compensation (Atc)

    -Press this key to increase the value HOLD UNIT when meter is in pH calibration mode. Release the key after selecting the correct calibration value (Fig. E). -When meter is on, short press to enter the calibration mode(Fig. F). -When in calibration mode, skip to next calibration point by pressing this key.
  • Page 7 CALIBRATION MODE (CAL) Calibration is necessary and should be done regularly, recommend every day if the meter is used very often. 1. Power on the meter. 2. Short press key to enter pH calibration mode, you will first see " 4.00 "...
  • Page 8 6. There are 3 calibration points 4.00, 7.00 and 10.00, after completing the last cablibration point 10.00, the meter return to the normal mode after saving automatically (See Fig.K) .LCD shows "End " for a second (See Fig. IA) . Fig.

  • Page 9: Electrode Replacement

    ELECTRODE REPLACEMENT Fig. L The meter features that you can replace the electrode module when needed (see Fig. L). Place the finger nail under the clip, pull up the tab to release the lock, push up the top part of the meter. Pushing down the top part into a new electrode, align with the internal guides to lock the meter.

  • Page 10: Maintenance

    Fig. LA MAINTENANCE Please always keep the pH glass bulb wet by using the cap to protect and store the electrode. Always rinse the pH electrode and reference junction in de-ionized water before next use. Never touch or rub glass bulb for lasting pH electrode life.

  • Page 11: Operating Conditions

    OPERATING CONDITIONS Operating temperature 0 ~50 C (32~ 122 F) Operating Humidity Max. 80% RH Calibration buffer solution suggested: USA buffers (pH 1.68, 4.01, 7.00, 10.01,12.45) NIST buffers (pH 1.68, 4.01, 6.86, 9.18,12.45) DIN buffers (pH 1.09, 3.06, 4.65, 6.79, 9.23, 12.75) SPECIFICATION Range 0.00 ~ 14.00...

  • Page 12: Warranty

    WARRANTY The meter is warranted to be free from defects in material and workmanship for a period of one year from the date of purchase. This warranty covers normal operation and does not cover battery, misuse, abuse, alteration, tampering, neglect, improper maintenance, or damage resulting from leaking batteries.
  • Page 13 K type Thermometer K.J.T. type Thermometer K.J.T.R.S.E. type Thermometer pH Meter Conductivity Meter T.D.S. Meter D.O. Meter Saccharimeter Manometer Tacho Meter Lux / Light Meter Moisture Meter Data logger Temp./RH transmitter Wireless Transmitter ..More products available ! http://www.az-instrument.com.tw 2006/11 modified...

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