EVO-RR-100 Rotational Rheometer

联系电话: 13069007290 联系人：柳 屹

长春市智能仪器设备有限公司

产品介绍

EVO-RR-1OO Rotational Rheometer

一、 Product Overview

The rotational rheometer is one of the key instruments for researching and measuring the rheological properties of materials. It applies forced steady-state shear rate load, steady-state shear stress load, dynamic sinusoidal cyclic strain load, or dynamic sinusoidal cyclic stress load to samples, and observes the sample's response data to the applied loads. By measuring rheological parameters such as shear rate, shear stress, oscillation frequency, and stress-strain amplitude, it is a widely used rheological measurement instrument in the material field. It can study the flow and deformation characteristics of samples ranging from low-viscosity fluids to high-strength solids.

1. Working Principle

A servo motor drives the concentric outer cylinder, and the rotation of the outer cylinder drives the internal sample to rotate. The sample generates shear stress on the measuring bob, and by measuring the shear stress, parameters such as the sample's viscosity, elastic modulus, loss modulus, and phase angle are calculated.

三、Product Features

1.The sample contact parts are made of Hastelloy, enabling measurement of common corrosive samples.

2.The measuring bob adopts a friction-free suspension structure, ensuring that measurement data is not affected by friction and high accuracy is achieved.

3.Equipped with an anti-rod climbing device to reduce the impact of liquid rod climbing on sample viscosity measurement.

4.Integrated structure of the stress gauge and measuring bob, effectively solving the problem of inaccurate measurement of low-viscosity samples.

5.The entire test process is conducted under high temperature and high pressure, and pressure has no impact on the measurement results.

6.Flexible test procedures allow modification of test steps during the test. Steady-state testing and oscillation mode can be freely switched for the same sample.

7.The laser displacement sensor has a high sampling frequency, eliminating data loss and ensuring stable test data.

四、Technical Parameters

Structure：The main body is made of aluminum alloy (the wetted part is made of Hastelloy alloy).
Pressure Range ：Atmospheric pressure-10Mpa

Temperature Range：-20℃-260℃

Speed Range：1-2000 RPM

Sample Volume：42 ~ 78ml

Shear Rate：0.5~3400 sec-1

Shear Stress：1 ~ 15,000 dyn/cm2

Torque Range：14uN.m~150uN.m

Accuracy：0.01%（full range）

Repeatability：+/-0.05%（full range）

Viscosity Range ：0.5 ~ 5,000,000 Cp

Oscillation Frequency ：0.05-10HZ

Amplitude Range：0.1%-1000%

Test Curve Demonstration

——Sample Shear Rate Scan (1-2000 S⁻¹) ——Fracturing Fluid Performance Evaluation

Finding the linear viscoelastic region of the sample: oscillation frequency 0.1Hz, oscillation amplitude 0.01-1.The linear viscoelastic region is within 0.05-0.5 amplitude)

一Effect of Oscillation Frequency in the Linear Viscoelastic Region

一Gel Strength Determination in the Linear Viscoelastic Region