OPERATING INSTRUCTIONSThe following procedures are based on ASTM Standard D2240. This standard is recognized as being definitive, however, not all applications require such stringent controls.
Readings below 10/A may be inexact and should not be reported for some materials. Readings above 90/A should be made on a Type D durometer.
The surface of the sample to be tested shall be clean and smooth. The sample should be at least 1/4” (6 mm) in thickness unless it is known that identical results are obtained with a thinner specimen. Thinner materials can be stacked to obtain the minimum thickness (DO NOT GLUE). Such results may not agree
with those of a solid specimen. The sample should be large enough so that the indenter is at least 1/2” (12 mm) from any edge unless it is known that identical results are obtained when measurements are made closer to the edge. The surface of the specimen shall be flat over a sufficient area to permit the
presser foot to contact the specimen over an area having a radius of at least 1/4” from the indenter point. The temperature of the specimen should be 73.4°F ±3.5°F (23°C ±2°C). The specimen should be allowed to rest at this temperature for at least 1 hour prior to testing, as the properties of most materials change
with temperature.
Place the specimen on a hard, horizontal surface. With the durometer held vertically, press and hold release the 'ON/clr' button to turn on the digital indicator.
If desired, press and release the 'HOLD' button to enable max-hold. Hold the durometer vertically with the point of the indenter at least 1/2 " from any edge. Apply the presser foot to the specimen as rapidly as possible, without shock, keeping the foot parallel to the surface of the specimen.
Apply just sufficient force to obtain firm contact between the presser foot and the specimen. Hold for 1 or 2 seconds, the maximum reading can be obtained by a setting on the indicator (see above). When max-hold is enabled the maximum value reached will automatically be displaced and held until reset.
To disengage the maximum feature, press and release 'HOLD' button again. If other than a maximum reading is needed, hold the durometer in place without motion and obtain the reading after the required time interval. Make 5 tests at least 1/4" apart and use the average value.
DIGITAL INSTRUCTIONS (VRS)
ON ZERO Powers indicator ON Press and release ON ZERO
To Clear /Zero Display Press and release ON ZERO when LCD is ON.
OFF Powers indicator OFF. Press and release OFF MODE
HOLD Toggles Hold on & off. Changes HOLD from MAX reading to MIN reading & FRZ freeze Reading.
TO Toggle HOLD On/Off Press and release HOLD
To select Type of HOLD PRESS & Hold HOLD. The LCD ICONS scroll through MAX to MIN to FRZ. Release button when desired HOLD function is flashing.
Factory Reset: Press & Hold ON ZERO & OFF simultaneously until RESET appears on LCD
DATA Send Data through cable, wireless radio module, or store readings to indicator
To Send Data or Store Readings
Press and release 2ND
Press and release DATA/HOLD
To View Stored Readings
Press and release 2ND
Press and release ON ZERO
Press and release HOLD
Press and release move (2ND)
Repeat step 4 to scroll readings.
To Clear Stored Readings, Press and Hold ON ZERO
To Exit Stored Readings, Press and Release DATA HOLD
For a complete calibration check of mainspring, and visual and mechanical check of indenter, the instrument should be returned to PTC Metrology ™
PTC® recommends the unit be returned at least every 12 months for this check.
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