ST217B Automatic drug relative density meter (touch screen)

The ST217B automatic drug relative density meter (touch screen) is designed and manufactured based on the oscillation type density meter method in the third method of the 2025 Chinese Pharmacopoeia 0601 relative density determination method. The oscillation type density meter is mainly composed of a U-shaped oscillation tube (usually made of glass material, used to place samples), an electromagnetic excitation system (causing the oscillation tube to oscillate), a frequency meter (used to determine the oscillation period), and a temperature control system

Testing principle:

Inject a small amount of sample into a temperature controlled sample tube, record the vibration frequency or period, and calculate the density of the sample using the pre obtained sample tube constant. The constant of the sample tube is determined by the vibration frequency when the sample tube is filled with a calibration solution of known density. The instrument will directly display the density value after injecting the sample into the sample tube

Performance characteristics

● Built in sample pump, automatic sampling, cleaning, and drying measuring tank

● High definition video camera technology, convenient for direct observation of the measurement pool

● The operating program can be manual or automatic, with manual operation lasting 1-4 minutes and automatic program lasting 2-10 minutes (depending on the actual temperature of the sample)

● Temperature control method: Peltier temperature control

● Temperature control range: 20 ℃

● Automatic sampling: Using a microcontroller to control a stepper motor to drive a peristaltic pump for sample suction, the automation level of the product is improved

● Acid and alkali resistant pipelines: The pipelines that come into direct contact with liquids are all imported acid and alkali resistant pipelines to ensure that the instrument can measure acid and alkali solutions.

● High definition video camera technology, convenient for direct observation of the measurement pool

● 100 sets of test values are automatically saved, and the average, maximum, and minimum values can be automatically calculated

● Calibration function: When the instrument is not used for a long time, drift will occur. This instrument can be calibrated using 20 ℃ pure water as a standard, which is a function that glass density meters cannot achieve.

Main technical parameters

● Density resolution: 0.001g/cm³

● Repeatability: ± 0.001g/cm³

● Accuracy: ± 0.001g/cm³

● Test range: 0.001-1.999g/cm³

● Temperature resolution: 0.01 ℃

● Repeatability: ± 0.1 ℃

● Temperature control method: Peltier temperature control

● Temperature control range: 20 ℃

● Testing method: U-shaped vibration tube method

● Injection capacity: manual injection of about 2mL, automatic pump injection of about 4mL

● Injection method: manual injection by syringe or automatic sampling by built-in injection pump

● Cleaning function: automatic cleaning (compatible with manual)

● Does it come with a video? Yes

● Measurement time: 1-4 minutes for manual operation, 2-10 minutes for automatic program (depending on the actual temperature of the sample)

● Display: 7-inch TFT touch screen monitor

● Display values: density, relative density, temperature, concentration, Bomei degree

● Measurement method: Store 100 sets of custom measurement methods, including measurement parameters for each sample

● Stability assessment: Based on measurement accuracy and time, the stability time can be set independently

● Concentration conversion: Input density and concentration table or conversion formula, automatically convert concentration values

● Statistical calculation: 100 sets of test values are automatically saved, and the average, maximum, and minimum values can be automatically calculated

● Software extension: User management, audit tracking, and the ability to export data in Excel format.

Note: The appearance pictures, dimensions, volume, and weight of the instrument are for reference only. If there are any updates to the instrument, there may be slight changes without prior notice.

Packing list

Shandong Shengtai Instrument Co., Ltd. provides the following quality assurance for the instruments sold to you:

----The provided instrument materials are brand new, meet national quality standards, and have a manufacturer's certificate of conformity;

----The materials and main components provided meet the technical requirements specified in the technical documentation;

----The overall quality assurance period of the equipment is one year (excluding normal wear and tear of vulnerable parts).

----We are responsible for free maintenance of any instrument quality issues that occur during the warranty period. Due to equipment malfunction caused by the user's responsibility, we are responsible for repairing and charging reasonable fees.

----Lifetime discounted supply of parts for equipment, and lifetime maintenance and repair of the entire machine.

----After the expiration of the warranty period, if the user needs maintenance and technical services, we will only charge a cost fee.

  Shandong Shengtai Instruments Co., Ltd. is specialized in the research and production of experimental testing instruments and industrial testing instruments. It is a professional instrument company integrating instrument research and development, manufacturing, sales and service. Its products are widely used in food, flour, grain and oil, Feed, electricity, petrochemical, industrial oil, aerospace, coal quality and other industries.

For more than 10 years, Shengtai has always been adhering to the "first-class service, customer first" as the purpose, "reasonable price, honesty and trustworthiness" as the business policy. Adhere to technical innovation, with rich knowledge of the technical team and experienced, thoughtful after-sales service team.

Shengtai instrument as one of the most large-scale and competitive enterprises in the industry, with the strength of technology research and development, professional technical knowledge and innovative design concept, in the model improvement, Significant technical breakthrough has been achieved in the development of function expansion and intelligent control system.