CWP Accurate pH 9.0 Operating Instructions

Operating Instructions for the Accurate pH 9.0 Nutrient Monitor

Specification: Accurate pH 9.0 Nutrient Monitor
Range: 0.0-14.0 pH
Resolution: 0.1
Accuracy: ±0.1 pH
Calibration: 2-points 7/4 pH
Power supply: DC 9v transformer
Replacement or Repair Warranty (at the manufacturer's discretion):
• 12 months for defective parts and materials from date of manufacture on the Monitor Body.
• 6 month warranty on the pH electrode.
Proof of purchase required. Warranty does not cover water damage, body submersion in
liquids or abuse. Warranty will be void if the person calibrating the meter damages any
calibration screw. For warranty, return the meter to the place of purchase or call CWP
Instruments at 888.433.6867 for a Return Authorization Number.

Operation of the Accurate pH 9.0 Nutrient Monitor

IMPORTANT INFORMATION: The meter's electrode is
attached to the meter's body by a BNC connector. Remove the
rubber protectors from the pH electrode's BNC connector before
attaching it to the Accurate pH 9.0 meter. Align the pins and
slots of the BNC connector, gently push in and turn clockwise
until the two pieces lock into place.
You have purchased a scientific instrument requiring a delicate touch when calibrating. Read
both calibration and troubleshooting sections to familiarize yourself with the meter's operation
before calibrating. Be gentle; do not force the calibration screws past their stop. They are
sensitive and have less than 1 turn total travel. Hold the screwdriver between thumb and index
finger to turn the calibration screws. Take care in turning them as the screwdriver slots can be
stripped if pressure is applied to the screws after their maximum travel has been reached. The
warranty will be void if any calibration screw is stripped or damaged in any way.
pH Measurement –
1. Hang the pH electrode in the water or nutrient solution in such a manner that it is out of
harm's way and the currents in the tank will flow by. The monitor will constantly display the
pH value of the solution.
2. When not in use, store the electrode in this manner. Clean the electrode with Rejuve it!
electrode cleaner, rinse with distilled water and blot dry with a clean cloth. Fill the plastic
storage bottle with Store it! electrode storage solution. Insert the electrode through the
storage bottle's cap and tighten.
3. Occasionally clean the electrode with Rejuve It! electrode cleaner. This will rejuvenate the
glass bulb by safely cleaning build-up from the glass.
pH Calibration –
If this is a new meter, skip step 2.
1. Allow the electrode's glass bulb to sit in CWP's brand of electrode cleaner called Rejuve it!
for 15 minutes. Using a soft toothbrush lightly scrub the glass bulb. Gently rinse with
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Temp 1 point
1-888-433-6867 www.cwpmeters.com