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  • Rotational viscometer

    Model:NDJ-1

    Brand:Jingxin

    Specifications

    Introduction:The NDJ-1 rotary viscometer is suitable for measuring the absolute viscosity and rheological properties of various liquids and semi-fluids.

    Product Description:

    The NDJ-1 rotary viscometer is suitable for measuring the absolute viscosity and rheological properties of various liquids and semi-fluids. It is widely used to measure the viscosity of various fluids such as grease, paint, food, medicine, cosmetics, adhesives, etc. It is one of the most used precision instruments in new product development, product quality control and other testing and analysis.

    The NDJ-1 rotary viscometer produced by our company has the following characteristics:

    1. The lifting system adopts helical rack/helical gear method

    The rotational viscometers of other manufacturers use the straight rack/spur gear method. The rack and gear have only one tooth contact when working. If you want to adjust upwards easily, it will slide downwards; if you avoid self-slip, move upwards. Adjustment will be difficult. The rotational viscometer of our factory adopts the helical rack/helical gear method. The rack and gear only have three teeth contact when working, which effectively overcomes the shortcomings of the straight rack/spur gear method. It is convenient and easy to move up and down. The positioning is accurate and will not self-slip (the helical rack/helical gear method has much higher processing requirements and costs than the straight rack/spur gear method).

    2. A universal joint is added at the interface connecting the rotor

    Generally, the rotor of the rotary viscometer is directly rigidly connected to the rotating shaft. The non-concentricity of the shaft or the non-concentricity of the rotor will cause the rotor to shake during the test and affect the test accuracy. The tip of the rotating shaft is thin and sharp. Even inadvertent collisions often cause the tip of the shaft to bend or even damage. The use of a universal joint can effectively reduce the test error caused by the misalignment of the shaft and the rotor, and protect the tip of the shaft. Avoid damage by impact. This kind of structure has not been seen by other manufacturers, and it has only been seen on imported high-end viscometers (universal joints need to be processed by imported CNC machine tools, and the accuracy requirements are very high, so the cost has also increased a lot).

    3. The transmission gear is made of high wear-resistant and high-performance engineering plastics.

    In order to make the rotational viscometer run smoothly and measure accurately, the machining accuracy of gears is very high. At present, the gears used in rotational viscometers produced by other manufacturers are processed from metal sheets into gears and then riveted with other parts. Due to the limitation of this processing method, it is difficult to meet the design requirements, which makes the viscometer not work during operation. Stable, such as shaking, shaking, pointer jumping, etc., and noisy. Our factory uses high-performance engineering plastics (its performance is better than metal) to press the entire part of the gear at one time. Due to the high precision of the mold, the processed gears are guaranteed to fully meet the design requirements, which fundamentally solves the problem of metal gears. The problem makes the viscometer work very smoothly and improves the test accuracy.

    4. Fine processing and excellent performance

    Each part is carefully processed and carefully adjusted, and it looks like a precision instrument when you get it. It is in sharp contrast with some manufacturers who only know about shoddy, low price and low quality.

    5. A special thermostatic bath for rotary viscometer is provided as a complete set

    The viscosity of the sample tends to change with the temperature, and accurate measurement requires the control of the sample temperature. Based on the long-term production of various high-precision constant temperature baths, our factory has designed and produced a variety of high and low temperature constant temperature baths for use with rotational viscometers.


    The main technical indicators of NDJ-1 rotational viscometer:

    Model

    NDJ-1

    NDJ-4

    NDJ-5S

    NDJ-8S

    NDJ-9S

    Measuring range

    1~1*10^5mpas

    1~2*10^6mpas

    1~1*10^5mpas

    1~2*10^6mpas

    1~1*10^5mpas

    Rotor specifications

    No. 1-4 rotor, optional No. 0 rotor can measure low viscosity to 0.1mps

    Rotor speed

    6、12、30、60RPM

    0.3、0.5、1.5、3、6、12、30、60RPM

    6、12、30、60RPM

    0.3、0.5、1.5、3、6、12、30、60RPM

    6、12、30、60RPM

    Automatic gear

    /

    Can automatically select the appropriate rotor number and speed

    Operation interface selection

    /

    Chinese English

    Stable cursor while reading

    /

    When the cursor is full of the vertical bar, the reading is basically stable.

    measurement accuracy

    ±5%(Newtonian liquid)

    ±2%(Newtonian liquid)

    Temperature accuracy device

    without

    have

    Power supply

    comminicate220V±10,50HZ±10%

    working environment

    Temperature 5℃~35℃, relative humidity not more than 80%

    Dimensions

    400*370*150mm

    370*325*280mm

    net weight

    1.5KG

    6.8KG


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