Dostmann-Electronic 5040-0301 pH Instrument With ATC Instruction Manual

Dostmann-Electronic 5040-0301 pH Instrument With ATC

Specifications :

• Model Numbers: 5040-0301 / 5040-0302 / 5040-0303 / 5040-0304
• Power Supply: 2 x CR2032 button batteries
• Automatic Temperature Compensation (ATC): Yes
• Display: LCD display
• Auto Power Off: Yes, after 20 minutes of inactivity

Product Usage Instructions

Material Supplied:
This package includes:

• 1 x PH CHECK
• 2 x CR2032 button batteries
• 1 x Operation manual
• 1 x Container with storage solution

Power Supply:

1. Turn off the meter.
2. Loosen the battery cover in a clockwise direction using a coin (Do not discard the black washer).
3. Replace the old batteries with two new button cells CR2032.
4. Ensure correct polarity and position of the batteries.
5. Secure the battery cover by turning it in a counter-clockwise direction.

LCD Display :

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

Keypad Operation :

1. Remove the probe storage bottle from the meter to expose the electrode.
2. Dip the electrode into the test solution and power on the meter to get a stable reading.
3. Press the hold button to freeze current readings and release it to exit hold mode.
4. Clean the electrode after measurement.
5. Turn off the meter when finished.

Auto Power Off (Sleep Function):
The meter will automatically shut off after 20 minutes of inactivity. To disable this feature, press specific keys before powering on.

Automatic Temperature Compensation (ATC) & Temp. Unit Setting:
The pH CHECK can measure with Automatic Temperature Compensation. Choose the preferred unit and save it by following the on-screen instructions.

Frequently Asked Questions (FAQ):

• Q: How often should I recalibrate the meter?
  A: It is recommended to recalibrate the meter after changing batteries or if you suspect inaccurate readings.

• Q: Can I leave the batteries in the instrument for an extended period?
  A: It is advised to remove batteries if the instrument will not be used for a month or longer to prevent damage.

PH CHECK
pH Messgerät mit ATC
pH Instrument with ATC

Operating Instruction

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INTRODUCTION

Congratulations on your purchase of this pen type long probe pH meter. Please read the manual completely before using this meter. 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 or to make the electrode wet if the pH electrode dries out.

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 points calibration.
• One touch only for calibration.

Kindly note / Safety Instructions

• Check if the contents of the package are undamaged and complete.
• Remove the protection foil above the display.
•  For cleaning the instrument please do not use an abrasive cleaner only a dry or moist piece of soft cloth. Do not allow any liquid into the interior of the device.
• Please store the measuring instrument in a dry and clean place.
• Avoid any force like shocks or pressure to the instrument.
• No responsibility is taken for irregular or incomplete measuring values and their results, the liability for subsequent damages is excluded!
• Do not use the device in explosive areas.

Danger of death!

• Do not use the device in an environment hotter than 85°C!
  The lithium battery may explode!

• Do not expose the unset to microwave radiation. The lithium battery may explode!

MATERIAL SUPPLIED

• This package contains:
• 1 x PH CHECK
• 2 X CR2032 button battery
• 1 x Operation manual
• 1 x Container with storage solution

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 LCD
3.  The meter can not power on

To install the batteries:

1. Turn off the meter.
2. Loose the battery cover in clockwise direction by coin (DON‘T discard the black washer!)
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 counter-clockwise direction to lock

NOTE:

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

•  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 meter to expose the electrode out.
   It is normal if you find white crystals are present on the cap or electrode assembly.
   WARNING : For pH meters, please always make the bottle is filled with storage buffer to keep the electrode wet and in a good storage condition.

2. Dip the electrode into the test solution. Press „ „ to power on the meter and tire it to get a stable reading.

3.  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

4. 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.

5. Turn off the meter by pressing „ „ button.

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

7.  Please see page 18 for the calibration procedures.

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

To disable the auto power off: Before power on, pressing keys simultaneously until a „n“ appeared on the screen and then release keys to return to normal mode.

• Note :
  The disable sleep mode will be invalid after every power off.

• AUTOMATIC TEMPERATURE COMPENSATION (ATC) & TEMP. UNIT SETTING

• pH CHECK is capable of measuring with Automatic Temperature Compensation. 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. „SA „ will appear on the LCD for one sec. and then go back to normal.

CALIBRATION MODE

Calibration is necessary and should be done regularly, recommended everyday 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 (4,7 or 10), 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. 4. If probe or buffer is in error: If the buffer is incorrectly inserted 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 : – 250mV….. -97mV

5.  If the probe recognizes the buffer:
   If the probe successfully recognizes the buffer, the buffer pH value (4 or 7 or 10) will appear on the display in 2 seconds

   • 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 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 above steps until the 3 point calibration are 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  next use.
• Never touch or rub glass bulb in order to last pH electrode life.
• Make sure the electrode is clean. Between measurements, rinse the electrode with deionised water. If the electrode has 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 power key is more than 100 mS.
2. Check the battery are 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 back again.

Slow response
Clean 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 fluctuate quickly
  It is normal when the electrode is not immersed in the water but exposed in air.

• Operating Temp.: 0°~50°C (32~122°F) Operating Humidity: 0~80% RH

• pH calibration buffer suggested:

  • Standard USA buffers
  • Standard NIST buffers
  • Standard DIN buffers

Explanation of symbols

This sign certifies that the product meets the requirements of the EEC directive and has been tested according to the specified test methods.

Waste disposal
This product has been manufactured using high-grade materials and components which can be recycled and reused.

• Never dispose of empty batteries and rechargeable batteries in household waste.
• As a consumer, you are legally required to take them to your retail store or to an appropriate collection site depending on national or local regulations in order to protect the environment.
• The symbols for the heavy metals contained are:
• Cd=cadmium, Hg=mercury, Pb=lead
• This instrument is labelled in accordance with the EU Waste Electrical and Electronic Equipment Directive (WEEE). Please do not dispose of this instrument in household waste. The user is obligated to take end-of-life devices to a designated collection point for the disposal of electrical and electronic equipment, in order to ensure environmentally-compatible disposal.

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