Hanna Instruments HI8010 - Portable pH Meter Manual

Preliminary Examination

Remove the instrument from the packing material and examine it carefully to make sure that no damage has occurred during shipment. If noticeable damage is found, notify your dealer.

HI8010 comes supplied complete with:

• HI1230B pH electrode
• calibration screwdriver
• 9V battery (1 pc.)
• instruction manual
• certificate

Note:
Save all packing material until you are sure that the instrument functions correctly. Any defective items must be returned in the original packing together with the supplied accessories.

Functional Description

Specifications

Calibration Procedure

For better accuracy, a frequent calibration of the meter is recommended. Moreover, the instrument should be calibrated:

1. when the pH electrode or the battery is replaced;
2. at least once a month;
3. after testing aggressive chemicals;
4. where extreme accuracy is required.

Preparation

• Pour small quantities of pH 7.01 (HI7007) and pH 4.01 (HI7004) solutions into two clean beakers.
• For accurate calibration use two beakers for each solution: the first one for rinsing the electrode, the second one for calibration.
• For accurate readings, use pH 7.01 (HI7007) and pH 4.01 (HI7004) if samples to be measured are acidic, or pH 7.01 (HI7007) and pH 10.01 (HI7010) for alkaline measurements.
• If calibration to NBS standards is required, use pH 6.86 (HI7006) instead of pH 7.01 and pH 9.18 (HI7009) instead of pH 10.01.

Procedure

• Remove the protective cap from the electrode, rinse and immerse it in pH 7.01 buffer and stir gently. Wait a couple of minutes for the reading to stabilize.
• Measure the solution temperature with a HI98501, e.g. 20°C.
• Set the rotary knob to the °C position to display the manual temperature setting and adjust the °C trimmer until the LCD shows the measured temperature.
• Set the rotary knob to the pH position, wait for the reading to stabilize and with a small screwdriver adjust the AP trimmer until the LCD shows the pH value at the above temperature (see pH vs. temperature chart on the buffer bottle).
• Rinse and immerse pH electrode and thermometer in pH 4.01 or pH 10.01 buffer (2^nd calibration point); stir gently.
• Wait a few minutes, then adjust the pH trimmer until the LCD shows the pH value at the noted temperature (see pH vs. temperature chart on the buffer bottle).

Operational Guide

• Slide off the battery compartment cover on the back of the meter and install the supplied 9V battery, while paying attention to its polarity.
• Connect the pH electrode to the BNC socket on the top of the meter and remove the electrode protective cap.
• Immerse the electrode (at least 4 cm/1.5'') and an accurate thermometer (eg. HI98501) in the sample to be tested, as close as possible one to the other.
• Turn the rotary knob to the °C position to display the temperature setting. With the provided screwdriver, adjust the °C trimmer to read on the LCD the temperature measured by the thermometer.
• Turn the rotary knob to the pH position, shake the electrode briefly and allow the reading to stabilize. The display will show the pH value compensated for the manually adjusted temperature.
• After measurements, switch the meter OFF by turning the rotary knob to the OFF position, disconnect the electrode from the meter and store it with a few drops of HI70300 solution in the protective cap.

Notes:
Before taking measurements, make sure the meter is calibrated.
If the electrode has been left dry, soak the tip in HI70300 storage solution for at least one hour to reactivate it.
For a faster response time when using refillable electrodes, unscrew the refill hole cap.

• If measurements are taken in different samples successively, it is recommended to clean the electrode thoroughly to eliminate cross-contamination. After cleaning, rinse the electrode with some of the sample to be measured.

All rights are reserved. Reproduction in whole or in part is prohibited without the written consent of the copyright owner,
Hanna Instruments Inc., Woonsocket, Rhode Island, 02895, USA.

Probe Maintenance

To obtain the highest accuracy for measurements it is important to follow these tips:

• Calibration is only as good as the buffers being used. The pH buffers value change over time once the sachets are opened. Fresh buffer should be used for each calibration.
• The probe should be rinsed with purified water each time before pla cing in buffer or sample to be tested.
• When the meter is not in use it is important to add several drops of storage solution to a sponge in the protective cap to keep the probe hydrated. If storage solution is not available, then pH 4.01 or pH 7.01 buffer can be used.
• For improved accuracy it is recommended to calibrate in two points. It is important to use buffers that bracket the expected value of the sample to be tested. For example, if the expected value is pH 8, the meter should be calibrated using pH 7.01 and pH 10.01 buffers.
• It is important to calibrate and measure samples at the same temperature. A dramatic change in temperature between buffer solutions and samples to be tested will give inaccurate readings.

Battery Replacement

When the battery becomes weak, the instrument automatically switches the display off. It is recommended to replace the battery immediately.
Replacement must only take place in a safe area using an alkaline 9V battery. Remove the battery cover and replace the old battery with a new one, while paying attention to its polarity.

Note:
After changing the battery, recalibrate the meter.

Recommendations for Users

Before using Hanna products, make sure that they are entirely suitable for your specific application and for the environment in which they are used. Operation of these instruments may cause unacceptable interferences to other electronic equipment. Take all necessary steps to correct such interferences. Avoid touching the probe at all times. Any variation introduced by the user to the supplied equipment may degrade the instrument's EMC performance. Do not put the instrument in a microwave oven to avoid burns or damage to equipment. Do not use or store the instrument in hazardous environments.

Warranty

This meter is warranted for two years against defects in workmanship and materials when used for their intended purpose and maintained according to instructions. Electrodes are warranted for six months. This warranty is limited to repair or replacement free of charge. Damage due to accidents, misuse, tampering or lack of prescribed maintenance are not covered. If service is required, contact the dealer from whom you purchased the instrument. If under warranty, report the model number, date of purchase, serial number and the nature of the problem. If the repair is not covered by the warranty, you will be notified of the charges incurred. If the instrument is to be returned to Hanna Instruments, first obtain a Returned Goods Authorization Number from the Customer Service department and then send it with shipment costs prepaid. When shipping any instrument, make sure it is properly packaged for complete protection.

Hanna Instruments reserves the right to modify the design, construction, or appearance of its products without advance notice.

Accessories

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For technical support, contact your local Hanna office or email us at tech@hannainst.com Find your local Hanna office at www.hannainst.