English
Elcometer 148
English
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This product meets the Electromagnetic Compatibility Directive.
The product is Class B, Group 1 ISM equipment according to CISPR 11.
Group 1 ISM product: A product in which there is intentionally generated and/or used conductively coupled
radio-frequency energy which is necessary for the internal functioning of the equipment itself.
CONTENTS
Section Page
1 About this gauge. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
2 Getting started. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4
3 Calibration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5
4 Taking a pH measurement . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
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Thank you for your purchase of this Elcometer 148 pH Tester. Welcome to Elcometer.
Elcometer are world leaders in the design, manufacture and supply of inspection equipment. Our products
cover all aspects from development through application to post application inspection.
With the purchase of this product you now have access to the worldwide service and support network of
Elcometer. For more information visit our website at www.elcometer.com.
1 ABOUT THIS GAUGE
This gauge is a simple but effective instrument which is used to determine the pH value in countless
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1.2 WHAT THE BOX CONTAINS
• Elcometer 148 pH Tester
• pH/Temperature Sensor
• 4 x AAA Batteries
• Wrist strap
• pH4 calibration sachet
• pH7 calibration sachet
• Operating instructions
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2 GETTING STARTED
1. Remove the protective cap. Unscrew the storage
Soaker Cap from the probe. Do not dispose of the
storage solution as it is required to keep the electrodes
wet and ready for continuous measurement.
2. If the electrode sensor is dry, a slow and sluggish
reading will result. Soak the electrodes in water or pH
solution for 15-30 minutes before use.
Attach wrist strap here
Battery Cap
°C-°F Button
Display
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3 CALIBRATION
Calibration should be performed as frequently as possible to ensure accurate measurement, depending on
the frequency of tests performed. Additional calibration solution should be purchased for future needs (See
“Spares & Accessories” on page 10).
1. Cut open the shorter end of the pH7 calibration sachet.
2. Dip the sensor fully into the sachet, stir a little to remove the bubbles.
3. Press and hold-down the ON/OFF/CAL button until CAL is displayed, followed by a flashing 7.00.
4. When SA is displayed followed by End, calibration is complete and the unit resumes measurement.
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14. Always perform a single point calibration with pH7 first bef ore performing the second or third
point calibration.
15. After each successive second and third point calibration, the ‘percentage of slope’ % reading will be
displayed. This is an indication of the condition of the electrode. If the % reading shows 100%, it
means the electrode is in good condition. However, if the % reading is below 70% or above 130%, then
the electrode has deteriorated and should be replaced.
4 TAKING A pH MEASUREMENT
1. Switch on the unit
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5 DISPLAY PANEL
Calibration mode activated
Measurement Reading
Unit of measurement
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6 MAXIMUM/MINIMUM RECORDING
1. To register the maximum and minimum reading over a series of tests, press and hold-down the Hold/
Max-Min button until the display shows MAX and MIN blinking.
2. In this mode, proceed to make a series a tests.
3. To display the highest and lowest reading for the series of tests, press the Hold/Max-Min button once,
the highest reading will appear with the Max icon momentarily followed by the lowest reading with the
Min icon, following which the unit resumes measurement.
4. To stop or make a new recording, press and hold-down the Hold/Max-Min button until the MAX and
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7 MAINTENANCE
Elcometer products are designed to give many years reliable service under normal operating and storage
conditions. The instrument does not contain any user-serviceable components. In t he unlikely event of a
fault, the instrument should be returned to your local Elcometer supplier or direct to Elcometer. The warranty
will be invalidated if the instrument has been opened.
When the batteries are nearly depleted the battery symbol starts flashing
and batteries need to be replaced.
Unscrew the two screws from the battery cap. See Figure 1.
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8 TECHNICAL SPECIFICATION
pH Temperature
Range: 0 to 14pH 0 to 89°C (32-192°F)
Resolution: 0.01pH 0.1°C (0.1°F)
Accuracy: ±0.03pH ±0.5°C (±1°C)
Battery: 4 x 1.5 Volt AAA size battery
Calibration: 3 point at 7pH, 4pH and 9pH
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10 RELATED EQUIPMENT
In addition to the Elcometer 148 pH Tester, Elcometer produces a wide range of other coating testing
equipment.
Users of the Elcometer 148 pH Tester may also benefit from the following Elcometer products:
• Elcometer 130 Salt Contamination Meter
• Elcometer 134S Chloride Ion Test Kit for Surfaces
• Elcometer 138 Bresle Salt Kit
For further information contact Elcometer or your local supplier.
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