|
aHR0cDovL2ZyZWVzaGlwLmNvLmty
- Á¶°Ç: »õ·Î¿î
- À¯Çü: ¼öÁ÷
- ±Ù¿ø: CN (Á¤Ç°)
- Áõ¸í¼: NONE
Product specification New Gem Digital Refractometer / Jewelry Inspection Instrument / Emerald / Jade / Refractive Index Test Without Oil
Gem digital refractometer is a portable digital instrument, mainly used to measure the refractive index of gems; ¡Ú It can quickly distinguish gems and glass imitations, and can determine the type of gems, is a very simple gem detection instrument; ¡Ú Refractive index and reflectivity; ¡Ú Oil-free test, large measuring range: 1.40-2.00; ¡Ú Imported high-quality microcomputer processor, digital circuit design, no influence of ambient light, stable data; ¡Ú Working temperature: 5-30 ¡É; Indication error: ¡Â ¡¾ 0.008; ¡Ú Power supply: 9 stacked batteries; equipped with two standard refractive index blocks.
pay attention:
1. The test sample must have a plane with a diameter greater than 3mm
2. The tested surface of the test sample must be well polished, and the test value of the poorly polished sample will be lower than the true value.
3. The surface oil, fingerprints, etc. seriously affect the accuracy of the measurement. The test surface of the sample must be cleaned.
4. Keep clean, clean the table before the test, and cover the dust cover after the test. Do not let dust enter the test hole.
Instructions:
1. Preparation: Please clean the sample surface and test platform carefully before use. Any dirt will have a greater impact on the measured value. The test surface of the sample can be carefully cleaned with reagents such as alcohol.
2. Put the sample: Turn on the power switch, the LCD will display the number: 0.000, carefully put the sample into the test platform, and place the test hole as the center symmetrical position. (Special attention: must be placed symmetrically)
3. Test: Press TEST key, the refractive index value of the measured sample will be displayed.
Instrument calibration:
Long-term use or the instrument is affected by harsh conditions such as strong vibration. If a large error is found during the test, the instrument must be recalibrated.
1. Turn on the switch ON key.
2. Press and hold the TEST test button for 5 seconds until "CAL" appears.
If ¡°1.487¡± is displayed, put the 1.387 calibration fast, press the TEST key once, at this time the screen displays ¡°1.806¡±, then put the 1.806 calibration fast, press the TEST key once, the word ¡°END¡± appears, and the calibration is completed.
|
|
|
|
|