The Engel's viscometer is in accordance with T0622 "Asphalt Engra viscosity test (Engra Designed and manufactured by the requirements stipulated in the "Viscometer Method", it is suitable for measuring the ratio of the time (seconds) for the liquid to flow out of the Engel's viscometer at a certain temperature and volume to the time (seconds) for the distilled water at 20 ℃ , Which is the Engel's viscosity of the liquid, the unit is Engladus. This instrument can test two samples at the same time in the same temperature environment and generate the average value of time. It is an ideal instrument for determining the Engelat viscosity value of petroleum products and asphalt products.
definition
Engel's viscosity: Under the specified conditions, the ratio of the time (s) required for a certain volume of sample to flow out of the 200mL trial increase from the small hole of the Engeller viscometer to the value of the water measured by the viscometer, expressed as 0Et.
Verification conditions
The following equipment is required for the verification of the Enshi viscometer
1. Mercury thermometer that has passed the verification and has a graduation value not greater than 0.2 ℃.
2. A secondary stopwatch or timer with a division value not greater than 0.1 s after passing the verification and with a verification certificate.
3. 200 cm3 receiving bottle with verification certificate.
4. (2 ~ 5) cm3 pipette, glass beaker, glass rod, etc.
5. Newly prepared distilled water, chromic acid pickling solution, gasoline, alcohol, petroleum ether, etc.
skills requirement
1. The standard water value of the Engel's viscometer should be (51 ± 1) s (that is, the time required for 200 cm3 of freshly distilled water to flow out of the viscometer at 20 ° C).
2. The surface of the viscometer cup and the inner wall of the outflow tube must be smooth, and there must be no scratches or burrs. The connection between the thin tube and the cup should be smooth, and there should be no observable unevenness.
3. The tips of the three small spikes in the inner container of the viscometer should face up, and should be on the same level. The wooden plug has a supporting positioning device. The conical part should be smooth. There should be no leakage when inserted into the outflow tube.
4. The viscometer must indicate the instrument name, serial number, manufacturer name, etc.
5. The receiving bottle should meet the requirements of "Glass Instruments Verification Regulations".
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