PH AND EC HANNA COMBO METER HI98129

-GENERAL DESCRIPTION:

The Adwa Water PH/EC Combo Meter is ideal for everyone involved in cannabis cultivation who wants to accurately measure the PH and EC of their crops. The product's quality and price are excellent.

It is specially designed to tackle the needs of continual simple checks and is perfect for cannabis cultivation.

The casing has an IP54 protection.

You can simply mount the meter above the sample you want to consistently monitor.

The PH electrode, filled with gel, is replaceable and the BNC connector is covered by a waterproof casing. The unique design of the electrode ensures a longer life even in harsh solutions.

The device features two large displays that allow readings from distance at any time.

Measurements are extremely accurate and the meters can be calibrated at one or two points for PH, and at a single point for TDS and EC.

The unit runs uninterrupted with the provided 12 VDC adapter.

-OPERATION GUIDE

PH ELECTRODE CONNECTION:

To protect the instrument from vapours and humidity, the BNC connector is safeguarded with a waterproof sleeve.

• Slide the protective sleeve, connect the PH electrode to BNC connector, and then cover the whole casing with the sleeve. For max waterproof protection, ensure the connector is fully covered.
• Don't worry if white crystals appear on the protective cap of the electrode. It's normal for PH electrodes and they dissolve when washed with water.

TAKING MEASUREMENTS

• Turn on the meter by connecting the 12 VDC adapter to the meter and electricity supply.
• Take off the protective cap from the PH electrode.
• Submerge the tips of the PH electrode, the EC/TDS probe, and earth probe 4cm into the sample. To ensure accurate measurements, the probes should neither touch nor be near the container's walls or bottom.
• The two LCDs will show the PH and EC/TDS values. Any initial measurement variation could be due to the PH electrode conditioning and the EC/TDS's temperature compensation. Allow readings to stabilise.

PH ELECTRODE MAINTENANCE

• When not in use, rinse the electrode with water to minimise contamination and store it with a few drops of storage or PH 7 solution in the protective cap. Always replace the protective cap when not in use.

DO NOT USE DISTILLED OR DEIONISED WATER FOR STORAGE PURPOSES

• If the electrode has been left dry, soak the tip in storage or PH solution overnight to reactivate it.
• To minimise blockages and extend the life of the PH electrode, it's recommended to clean it at least once a month. Soak the electrode's tip in the electrode cleaning solution for half an hour and then rinse with tap water.

MAINTENANCE OF EC/TDS PROBE

The following cleaning procedure is recommended at least once a month.

• Soak the electrode's tip in the cleaning solution for half an hour.
• If more thorough cleaning is needed, brush the metallic pins with a very fine abrasive paper.
• After cleaning, rinse the probe with tap water.

-CALIBRATION:

The device must be recalibrated :

1. After cleaning or replacing the probe.
2. When maximum precision is required.
3. At least once a month.

PH CALIBRATION

Pour small amounts of PH 7.0 and PH 4.0 solutions into two clean cups.

For precise calibration, use two cups for each buffer solution - one for rinsing the electrode's tip and the other for calibration.

• Turn on the electrode, rinse it, and submerge it in a PH 7.0 buffer. Shake it gently and wait for the reading to stabilise.

NOTE: The electrode must be immersed approximately 4cm into the solution.

• Adjust the right potentiometer with the calibration screwdriver until the LCD displays PH 7.0.
• Rinse and immerse the PH electrode in the PH 4.0 buffer and gently shake it.
• Wait a few minutes then adjust the left PH 4 potentiometer until the LCD displays the second buffer's value.

The PH calibration is complete.

CE/TDS CALIBRATION

• Turn on the meter
• Pour a small amount of calibration solution into a cup. If possible, use plastic cups to minimise any EMC interference.
• Submerge the EC/TDS probe in the solution, making sure the metal pins are fully under water.

Note: To avoid measurement inaccuracies, ensure the probe's body doesn't touch or come near the cup's walls.

• Wait a few minutes for thermal balance to be reached and temperature to be compensated.
• Gently tap the probe on the bottom, then swirl while rotating to ensure no air bubbles are trapped.
• Turn the calibration potentiometer with a screwdriver until the screen displays 1.41 ms/cm or 1500ppm
• The calibration is completed

Warranty: 2 years for electronic failure, 3 months for the probe