FEATURES for wood hardness tester

Wood hardness tester Designed to determine the indentation hardness of wood.
* It meets standards: DIN 53505, ISO 868, ISO 7619, ASTM D 2240, JIS K7215.
* Used the exclusive Micro-computer LSI circuit and crystal time base to offer high accuracy measurement.
* Digital display gives exact reading with no guessing or errors.
* Can communicate with PC for recording, printing and analysing by the optional software and cable for RS232C interface.
* Automatic power off to conserve power.
* Use operation stand of optional parts can get good accuracy and repetitiveness due to constant measurement force to eliminate the errors caused by artificially applied different force.

SPECIFICATIONS

Display: 4 digits, 10 mm LCD
Display Range: 0HD~100 HD
Measurement Range: 10HD~90 HD
Resolution: 0.1 HD
Measurement deviation: ≤ ±1 HD
Power supply: 4×1.5v AA (UM-3) battery
Operating condition: Temp. 0℃~50℃

Humidity <80%
Size: 162mmx65mmx28mm
Weight: about 170g (not including batteries)
PC interface: RS232C interface
Power off: 2 modes
Manual off at any time by depressing the power key till OFF shows on the display or Auto power off after 2 minutes from last key operation.
Accessories:
Carrying case ……………1 pc.
Operation manual ………1 pc. Test block ………………..1 pc.
NOTE: this test block is not the real hardness test sample. It is only an imitation. Just place the block onto a flat glass , then place the point of
indenter into the hole of the block when take measurements.

FRONT PANEL DESCRIPTIONS for wood hardness tester

[fusion_table fusion_table_type=”1″ fusion_table_rows=”” fusion_table_columns=”” hide_on_mobile=”small-visibility,medium-visibility,large-visibility” class=”” id=”” animation_type=”” animation_direction=”left” animation_speed=”0.3″ animation_offset=””] [/fusion_table]

MEASURING PROCEDURE

1 The minimum thickness is specified in a different standard, see part 1. Specimen should allow measurement to be taken at least 12 mm from any edge. Specimen surface should be flat and parallel to allow the presser face to contact to the specimen over an area which has a minimum radius of 6mm from the durometer probe. The specimen may be constructed with layered pieces to achieve the necessary thickness requirements, however measurements taken on these specimens may not agree with those made on solid specimens, due to the surface faces between layers not being in complete contact.
2 Depress and release the “Power key” to power the tester on.
3 Depress the “MAX” key till the mark MAX shows on the display.
4 Hold the durometer vertically with the point of the indenter at least 12 mm 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 automatically.
5 To take the next measurement, just depress the “Zero key” and repeat 4.4. On the other hand, you can depress the “Max hold key” till the mark MAX disappears from the display. And then repeat the step 4.3 and 4.4.
6 If other than a maximum reading is needed, no need to set the mark “MAX” showing on the display. In such case, the reading on the display is an instant value. Just hold the durometer in place without motion and obtain the reading after the required time interval (Normally less than 1 second) .
7 How to take average value
7.1 To take the average value of many times of measurements, just depress and release the “N/AVE key” to make the symbol “N” showing on the display, followed by a digit between 1-9 with the prefix “No.” . Here the digit is the times of measurements used to calculate the average value. Every time depress and release the “N/AVE key”, the digit will increase 1. And the digit will become “1” while depressing the “N/AVE
key” at “9” .
7.2 Adjust the digit to the number needed and depress “MAX key” or “Zero key” to return to the measurement state or wait for several seconds till “0” on the display.
7.3 Take measurements as per steps from 4.3 to 4.5. Be sure that every test should be 6 mm apart. Every time take a measurement,
the reading and the times of measurements show on the display. When the times of measurements is equal to the number set, the unit first displays the reading of the last , and then display the average value of last “N” measurements, followed by 2 beeps, with a symbol “AVE” indicating on the display.
7.4 To take the next average value, just repeat 7.3.
7.5 To release from average measurement, just depress the “N/AVE” till “N” disappears.

Error: Contact form not found.