BBV1000

The Model BBV-1000 series instrument is a versatile beam bending viscometer system that can determine either the annealing & strain point temperatures of a solid glass beam according to the ASTM C-598 procedure, or determine the temperatures for a range of viscosities of a solid glass beam according to the ASTM C-1350m procedure.

(Note: 如果必需使用玻璃絲方式測定徐冷/應變點, 可選用 Model ANS, Weighted Fiber Elongation Method, ASTM C-336.)

Automatic Annealing and Strain Point Determination

The Model BBV-1000 Series was designed to provide the user with the choice to operate according to the ASTM C-598 procedure, according to a user-modified version of the ASTM C-598 test, or according to the ASTM C-1350M procedure. Through the special Orton software loaded into the user supplied computer, the user selects the mode of operation, inputs the appropriate information, and the Orton software does the rest. The Orton software controls the thermal cycle, acquires the data, and analyzes the data according to the mode selected by the user.

The Model BBV-1000 system is comprised of a special furnace to heat the beam, a control system to heat and cool the furnace, a thermocouple to monitor the beam temperature, an LVDT system to monitor deflection of the test beam, a software system to determine the annealing & strain points or the viscosities of the test temperature range, and a software system for generating comprehensive or summary reports.

This system is comprised of the ASTM specified furnace to heat the sample beam, the Orton PID controller to operate the furnace according to the ASTM C598 thermal cycle, 2-point sample support system with midpoint sample load rod and weight, an LVDT system to continuously monitor the beam deformation, the Orton on board computer with internal logic to determine the annealing point, digital display panel for displaying the annealing point temperature, and software for an independent computer (provided by the purchaser).

Operation (ASTM C-598 Procedure) 玻璃棒彎曲測定徐冷點/應變點方法

After the sample beam (rod or bar) is prepared, the operator simply lifts the furnace up, places the beam on the sample support, lowers the furnace, enters the sample dimensions and other set up criteria into the PC loaded with the Orton software, applies the weight, clicks the START button, and walks away. The Orton software instructs the PID controller to heat the furnace from the staring temperature (25°C below the estimated annealing point temperature) at 5ºC per minute. The temperature and LVDT signals of the deflecting beam are captured by the software where the deflection rate is calculated and monitored. Once the deflection rate exceeds the pre-calculated turnover point, the Orton software instructs the PID controller to cool the furnace at 4°C per minute. While the furnace is cooling, the temperature and LVDT signals are captured by software for processing and storage. Once the deflection falls below the maximum deflection rate, the test is concluded and the annealing point temperature and the strain point temperature (the temperature at which the deflection rate is 0.0316 times the annealing point rate) are displayed on the computer monitor. The furnace automatically cools to the next starting temperature and waits for the next test.

Operation (ASTM C-1350M Procedure) 玻璃棒彎曲測定黏度 Log 14.0 - 9.0 Poise 方法

After the sample beam (rod or bar) is prepared, the operator simply lifts the furnace up, places the beam on the sample support, lowers the furnace, enters the sample dimensions and other set up criteria into the PC loaded with the Orton Software, applies the weight, clicks the START button, and walks away. The Orton Software instructs the PID controller to heat the furnace from thee starting temperature at 5°C per minute. The temperature and LVDT signals of the deflecting beam are captured by the software where the deflection rate is calculated and monitored. The software used the formula in the ASTM procedure to calculate the viscosity for the glass beam at that temperature, and generates a table of that data. The furnace automatically cools to the next starting temperature and waits for the next test.

Model BBV-1000 / 1200 / 1600 Specifications
玻璃待測樣品長度	50 mm (其它長度可定製)
玻璃待測樣品截面積	2.5 - 5 mm
待測樣品支撐架材質	Fused Quartz
操作溫度	1000°C / 1200°C / 1600°C
加熱線	Kanthal A-1
溫度控制器	PID - Automatic
玻璃待測樣品延長測定方式	LVDT
測定資料詰取與分析	Automatic
電源	120 VAC, 10 amp, 50/60 Hz (240 VAC available)
Measuring Unit Dimensions	12” W x 14” D x 33” T (305 x 355 x 840 mm)
Controller Dimensions	13” W x 12” D x 7” T (330 x 305 x 180 mm)

*Descriptions & specifications are subject to change without notice

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