SH102DThe fully automatic constant temperature petroleum densitometer is suitable for measuring liquid density and relative density. This method is based on the dualUThe principle of measuring liquid density based on the different oscillation frequencies when filled with different media in the tube conforms toGB/T2013-2010andGB/T29617-2013reachSH/T0604After pumping the liquid to be tested into the resonant cylinder sensor, the microcontroller processes the measurement data and automatically measures the density value of the petroleum product. It is composed of a double tuning fork density sensor, a vibrating tube circuit, a temperature measurement circuitCPUIt consists of a monitor, a thermostatic bath, an inlet pump, and a control panel. This liquid density meter can be widely used for measuring the density of various liquids, and with different concentration conversion software, it can directly read the concentration value of the corresponding liquid, such as alcohol. Through the processing of the microcontroller software, the volume concentration data can be directly read, making testing more convenient.

Performance characteristics

1Constant temperature control: Because liquid density is greatly affected by temperature, it is necessary to convert the liquid density detected at real-time temperature into20Liquid density at ℃. This instrument adopts a constant temperature bath control, which seals the sensor, its components, and the sample solution in the constant temperature bath. The temperature of the oscillation tube (sample solution) is detected by the temperature sensor, and the electronic components are controlled by the microcontroller to cool or heat, ensuring that the temperature in the constant temperature bath is stable20℃±0.1Within the temperature range of ℃. This not only solves the problems and errors caused by conversion, but also ensures the measurement accuracy, stability, and repeatability of the instrument (the constant temperature value can be customized according to user requirements)

2.Directly display liquid20The density value at ℃ and temperature display: The oscillation frequency of the sensor is detected by a microcontroller, and the density value of the liquid is calculated using a mathematical model of the relationship between the sensor frequency and liquid density. Then, floating-point operations are performed to ensure that there are no additional errors caused by insufficient operation bits during the calculation process, ensuring the accuracy of the measurement results. The density value calculated by the microcontroller is displayed as a five digit number and has a temperature display window.

3.Automatic sampling: The use of a microcontroller to control a stepper motor to drive a peristaltic pump for sample suction improves the automation level of the product

4.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.

5.Data storage and transmission: Built in storage chip capable of storing80Group detection data, and can be recalled and deleted. Can be approved according to user requirements232Interface and computer connection (customized).

6Calibration function: When the instrument is not used for a long time, drift will occur. This instrument can be used20Using pure water at ℃ as a standard for instrument calibration is a function that glass density meters cannot achieve.

Main technical parameters

Measurement range of density:0.001~1.999g/cm3

Density measurement accuracy:±0. 001g/cm3

Density value resolution:±0. 001g/cm3

Constant temperature control:20℃±0.1℃ (customizable constant temperature)15~35Any temperature between ℃

Sample size:2ml/order

Data storage:80group

Environmental temperature requirements:5℃~35℃

Power supply:220V±22V，50Hz±1 Hz,50VA

External dimensions:206mm×205mm×200mm

Instrument weight:3.2Kg