What technical parameters and standards should be considered when selecting an SD266B Engler viscometer for petroleum product testing?

The SD266B Engler viscometer is a table-top integrated instrument designed and manufactured for determining the Engler viscosity of petroleum products, applicable to liquids, emulsified asphalt, and coal tar. Its core function is to measure the ratio of the flow time of a sample (at a specific temperature and volume) from the viscometer to the flow time of distilled water at 20℃, with the result expressed in Engler degrees (EV). It features digital display of outflow time, support for parallel testing of two samples, and a high-precision PID digital temperature controller, ensuring ease of use and testing efficiency.

Key technical parameters of the SD266B Engler viscometer include:

- Model: SD266B
- Standard water value: (51±1) seconds
- Temperature range: Room temperature ~ 100℃
- Temperature control accuracy: ±0.1℃
- Engler viscosity thermometer: Compliant with GB514 standard
- Bottle size: (200±0.2) mL
- Inner crucible material: Stainless steel
- Electric heater power: 550W (AC220V, 50Hz)
- Time measurement range: Maximum 999.9 seconds
- Dimensions: 320×260×430mm
- Weight: 12kg

In terms of compliance standards, the SD266B Engler viscometer meets the requirements of multiple authoritative standards, including the People's Republic of China national standard GB/T 266, American standard ASTM D1665, and British standard IP212, ensuring the accuracy and authority of test results.

When used with a matching refrigeration cycle device (e.g., ZL-266A), low-temperature constant temperature control of small container liquid tanks can be achieved (measurement range: 10-40℃, display accuracy: 0.1℃, cooling method: compressor cooling, total power: 500W, weight: 10kg), expanding the instrument's applicability to low-temperature testing scenarios. The standard packaging of the SD266B includes essential accessories such as a host tester, Engler thermometer, thermometer clamp, wooden stopper, PT100 sensor, receiving bottle, instruction manual, and certificate, providing a complete testing setup.