TRIPLETT PH325 Long Tube Stem pH Meter User Manual

TRIPLETT PH325 Long Tube Stem pH Meter

Product Usage Instructions

The meter is powered by 2 pcs CR2032 batteries. Follow the steps below to install the batteries:

• Turn off the meter.
• Loosen the battery cover in a clockwise direction by using a coin (Do not discard the black O-ring!)
• Replace the old batteries with two new button cells CR2032.
• Ensure the batteries are correctly placed with the right polarity.
• Securely put back the battery cover and lock it in a counter-clockwise direction.
• Remove the probe storage bottle to expose the electrode.
• Dip the electrode into the test solution and power on the meter by pressing the power button.
• Stir the solution until you get a stable reading.
• Press the hold button to freeze current readings. Press again to release the hold mode.
• Turn off the meter by pressing the power button.
• Clean the electrode after measurement and store the meter between 0~50°C.
• Refer to page 7 for calibration procedures.

The pH pen supports Automatic Temperature Compensation. ATC will be displayed on the LCD for models that have this feature.

FAQ

• Q: How long should I soak the electrode before using?
• A: It is recommended to soak the electrode for at least 30 minutes before use to clear up any lazy effect.
• Q: What should I do if I see white crystals on the electrode assembly?
• A: It is normal to find white crystals on the cap or electrode assembly. Ensure the storage bottle is filled with storage buffer to keep the electrode wet and in good condition.

INTRODUCTION

• Congratulations on your purchase of this long-tube pH pen. Please read the manual completely before using this pen.
• Filing and keeping the manual for future reference. Recommended to soak the electrode for at least 30 minutes before using to clear up the lazy effect.

Features

• IP65 Waterproof housing.
• Dual display with ATC.
• Data hold to freeze readings.
• Compact size, easy to fit in pocket.
• Low battery indicator.
• Auto power off.
• C/F unit switchable.
• Power by 2pcs CR2032 batteries.
• Multi-point calibration.
• One touch only for calibration.

MATERIAL SUPPLIED
This package contains:

• The meter x 1
• CR2032 button battery x 2
• Operation manual
• Plain box

POWER SUPPLY

The meter is powered by 2 pcs CR2032 batteries. To check the battery when:

1. First-time use
2. The battery symbol appears on the LCD
3. The meter can not power on

To install the batteries

1. Turn off the meter.
2. Loose the battery cover in a clockwise direction by coin (DON’T discard the black O-ring!)
3. Replace the old batteries with two new button cells CR2032.
4. Make sure the batteries are in place and the polarity is correct.
5. Put back the battery cover and turn it in a counter-clockwise direction to lock

NOTE

1. Please re-calibrate the meters after changing the batteries.
2. Remove batteries from instruments that you do not plan to use for a month or more. Do not leave the battery in the instrument.

LCD DISPLAY

• The 1st display shows the measured pH reading.
• The 2nd display shows the temp.
• Cal=Calibration mode
• ATC=Auto Temp. Compensation
•  =Data hold

KEYPAD

OPERATION

1. Remove the probe storage bottle from the meter to expose the electrode. It is normal if you find white crystals are present on the cap or electrode assembly.

WARNING: For pH meters, please always make sure the bottle is filled with storage buffer to keep the electrode wet and in good storage condition.

Rotate the storage bottle in a counter-clockwise direction and then pull out the bottle completely to expose the electrode.

• Dip the electrode into the test solution. Press” ” to power on the meter and stir it to get a stable reading.

• A small dot “ ” is flashing while the meter is in measurement mode. The LCD not only shows the measured pH value but also displays the temperature.

• Press “ to freeze current readings. The “ ” icon will appear on the LCD and the small dot will not flash. Press “ ” again to release the hold mode.

• Turn off the meter by pressing “ button.

• Once finishing the measurement, clean the electrode, put back the bottle, and store the meter under the 0~50°C.

• Please see page 7 for the calibration procedures.

AUTO POWER OFF (SLEEP FUNCTION)
This meter will shut off automatically after 20 minutes of inactivity. For operating longer time, you can disable the sleep mode.

• To disable the auto power off: Before power on, press the” ” keys simultaneously until an “ n ” appears on the screen, and then release keys to return to normal mode.

Note: The disabled sleep mode will be invalid after every power off.
AUTOMATIC TEMPERATURE COMPENSATION (ATC) & TEMP. UNIT SETTING
The pH pen is capable of measuring with Automatic Temperature Compensation. In the above models, “ATC” will show in the middle top of the LCD.
Temp. Unit Setting

To select the temp. unit (°C or °F), turn off the meter first. When the meter is off, press “ ” and “ ” at the same time until. the C or F appears on the LCD. Press “ “to select the preferred unit and then press “ ” to save. “5R” will appear on the LCD for one sec and then go back to normal.

CALIBRATION MODE (CAL)
Calibration is necessary and should be done regularly, recommended every day if the meter is used often. The unique calibration design of the meter features automatic buffer recognition to avoid errors.
Calibration

1. Power on the meter.
2. Place the electrode into a buffer solution (4,7010), pH7 should be calibrated first and then 4 or 10 pH for better accuracy
3. Press “ ” to enter pH calibration mode. The icon “CAL” will appear on the LCD for one second and then pH value (4,7 or 10) will be displayed on the LCD.
4. If probe or buffer is in error: If the buffer is incorrectly used or the probe is damaged or the probe can not detect buffer in below voltage range, the meter will escape calibration mode automatically after 10 seconds. Text “End” will appear on the LCD in one second and then will go back to normal status.
   • Acceptable voltage range of each point:
   • PH 4.00 : 97mV….. 250mV
   • PH 7.00: – 60mV. ….. 60mV
   • PH10.00 : – 250m V ….. -9/mV
   • If the probe recognizes the buffer: If the probe successfully recognizes the buffer, the buffer pH value (4 7, or 10) will appear on the display in 2 seconds.
5. If the calibration buffer is not 4,7,10 but another value, such as 7.01, just press ” ” to change the value.
6. The adjustable cal. point range for 4.0 pH is from 3.50 to 4.50. For 7.0 pH is from 6.50 to 7.50. For 10.0 pH is from 9.50 to 10.50
7. To save the calibration value: When the electrode reads a stable value and the user stops pressing any keys, the meter will automatically save the value and then escape the calibration mode.
8. Rinse the probe with de-ionized water or a rinse solution (tap water…) after each measurement to last the meter’s life.
9. Repeat the above steps until the 3-point calibration is finished.

MAINTENANCE

• Please always keep the pH glass bulb wet by using the storage bottle to protect and store the electrode.
• Always rinse the pH electrode in de-ionized water or rinse solution (tap water……) before the next use.
• Never touch or rub the glass bulb to last the pH electrode life.
• Make sure the electrode is clean. Between measurements, rinse the electrode with deionized water. If the electrodes have been exposed to a solvent immiscible with water, clean it with a solvent miscible with water e.g. ethanol or acetone, and rinse carefully with water.
• Store the electrode carefully.

TROUBLESHOOTING

Power on but no display

1. Make sure the time of pressing the power key is more than 100 mS.
2. Check the battery is in place and make good contact and correct polarity.
3. Replace with new batteries and try again.
4. Move away the batteries for one minute and then put them back again.

Slow response

• Clean the probe by immersing the electrode in tap water for 10-15 minutes, then rinse thoroughly with distilled water or use a general-purpose electrode cleaner.

LCD display”—“

• Out of pH range, too acidic/or too alkaline.

“H.” Or “L.”

• Out of temp. range, too cold/or too hot.

pH value fluctuates quickly

• It is normal when the electrode is not immersed in the water but exposed to air.

SPECIFICATION

Model  8620

• Body Material: PC
• Reference: Single, Ag/AgCI
• Junction: Ceramic
• Electrolyte: Gel, 3.3M KCL
• Tip Shape: Spheric
• pH range: 0.00~14.00
• pH accuracy: +/-0.1
• pH resolution: +/-0.01
• Temp. Sensor: Built-in
• Probe Diameter: 12 mm
• Probe Length: 130mm
• LCD size: 29(H)x22.5(W)mm
• Operating temp: 0~50°C
• Operating RH%: Humidity<80%
• Storage temp: -10~50°C
• Storage RH%: Humidity < 90%
• Sensor life time: >6 months (with good maintenance)
• Meter Dimension: 187.4(L)x40(W)x58.4(H)mm
• Weight: 115g
• Battery: CR2032 x 2pcs
• Standard Package: Meter/Battery/Manual/Paper box
• Application: Laboratory general purpose

Battery Life: >100 hrs continuous use

Warranty

Triplett Test Equipment and Tools extends the following warranty to the original purchaser of these goods for use. Triplett warrants to the original purchaser for use that the products sold by it will be free from defects in workmanship and material for a period of (1) one year from the date of purchase. This warranty does not apply to any of our products that have been repaired or altered by unauthorized persons in any way or purchased from unauthorized distributors so as, in our sole judgment, to injure their stability or reliability, or which have been subject to misuse, abuse, misapplication, negligence, accident or which have had the serial numbers altered, defaced, or removed. Accessories, including batteries, are not covered by this warranty Copyright © 2024 Triplett www.triplett.com.

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