MOULDPRO PHM-100 Operation & User’s Manual
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User Guide
PH-Meter
Important:
The instrument's pH range must be re-calibrated when-ever:
The electrode has been used (laid) for long time from the last calibration.
The electrode has been used in particularly taxing conditions.
The utmost accuracy is re-quired.
Or when replacing the electrode with a new electrode-
Electrode Replacement:
1. Remove the protective cap.
2. Unscrew the plastic ring on the top of the electrode.
3. Pull out the pH electrode and replace it with a new one, make sure the
gaskets are in place before screwing back the ring.
Battery Install:
If the meter cannot be switched on or the display fades, then it is time to
change the batteries. Unscrew the battery compartment cap on the top of the
meter, and pull out the battery case and re-place batteries. Pay attention to
the polarity of battery.
Warranty:
These instruments are warranted from all defects in material and
manufacturing, for a period of one year from the date of purchase.
If during this period, a repair or the replacement of parts is required, where
the damage is not due to negligence or incorrect operation by user, please
return the parts to your dealer, and the repair or replacement will be done
free of charge.
Specifications for PHM-100:
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Measure Range: 0.00~14.00PH
Resolution: 0.01PH
Accuracy: ±0.1PH
Operating Temperature: 0°C ~ 50°C
Automatic Temperature Compensation: 0°C ~ 50°C
Power Supply: 4 x 1.Sv (AG-13 Button Battery)
Calibration: Manual.
Dimensions: 188mm x 35mm x 35mm
Weight: 98g
Operating Instructions:
Remove the protective cap.
First rinse the electrode with distilled water, and suck it with filter paper.
Turn the meter on by pressing the ON key.
Immerse the pH meter elec-trode in the solution to be tested.
Stir gently and wait for the reading to stabilize.
Press the "HOLD" key, the reading is be kept. When re-peat measuring,
please press the "HOLD" key again, it automatically relieves the hold
condition.
After use, rinse the electrode with water to minimize con-tamination. Turn the
meter on by pressing the OFF key.
Always replace the protective cap after use.
PH Calibration:
Immerse the electrode in pH 6.86(or pH7.00) standard buffer solution of
phosphate, and gently shake it.
Allow the reading to stabilize and with a small screwdriver turn, the calibration
trimmer beside the battery until the dis-play shows is corresponding the
calibration solution. Rinse the electrode with distilled water, and suck it with
filter paper.
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Immerse the electrode in pH4.01 or pH9.18 (pH10.0) the standard buffer
solution of borax.
After about one minute, until the display shows "4.01 "or "9.18" ("10.0"),
Notes:
The glass bulb of the electrode is fragile. Treat it carefully. Do not touch it by
hard tools and fingers. Suck the water on it gently when cleaning.
Clean the electrode with distilled or ionized water every time before and after
use.
Change log
Date of change
Change
Version
24-10-2019
New design
001
