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    Digital Rotational Viscometer, 10 to 200000 mPa·s

    sisco digital rotational viscometer comes with rotor spindles of 21#, 27#, 28#, 29#, offering the viscosity measurement ranging from 10 to 200,000 mPa.s, easy readout of viscosity with LCD display. The rotary viscometer has input voltage of 110-230V 50Hz/60Hz for continuous operation, with high resolution 0.01mPa鈥, best for the laboratories and manufacturing quality control.
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    Digital rotational viscometer comes with 4 spindles of 21#, 27#, 28#, 29#, which provides accurate and fast measurement of 10 to 200,000 mPa路s, easy operation and direct readout of viscosity at power supply 110~230V 50Hz/60Hz. This rotary viscometer is suitable for a variety of industrial and laboratory applications.


    • The digital rotational viscometer can measure the viscosity of a Newtonian liquid or the apparent viscosity of a non-Newtonian liquid.
    • Adopt the advanced micro-computer drive technology and stepper motor, accurate and stable rotating speed.
    • The horizontal display unit is at the front of the viscometer, convenient to adjust.
    • The measuring range and viscosity value can be accurately display with resolution of 0.01mPa路s.
    • With timing measurement function, it is practical for measuring the non-Newtonian liquid.
    • With automatic scanning, the viscometer can automatically recommend a preferred combination of rotor and speed.
    • The viscosity measurement range of the selected rotor and rotating speed is automatically displayed.
    • With the printing interface, a micro-printer can be connected to print various data.

    Digital rotational viscometer

    All metal lifting parts

    • Digital rotary viscometer has all-metal lifting parts, high stability, strong and durable. The operating knob is covered with rubber, which is comfortable and labor-saving.
    • Digital rotary viscometer uses a large number of high-quality aluminum-magnesium alloy, stainless steel and other materials, and is processed by high-precision processing equipment to ensure the reliability and accuracy of the whole machine.
    • The whole lifting column and rack part are made of pure copper, and cooperate with the high-precision gear components in the lifting slider to provide the host with a stable and smooth operating experience.
    Expansion interface for digital rotational viscometer

    Rich extension interface

    The digital rotational viscometer has an external power supply, wide voltage input, which can be equipped with high-precision temperature sensor, PC data acquisition software, portable printer, etc.


    sisco digital rotary viscometer is widely used in the manufacturing, scientific research institutes or laboratory for viscosity measurement of oils, greases, paints, coatings, pulp, textiles, food, pharmaceuticals, adhesives and cosmetics, etc.

    Digital rotational viscometer applications

    Model SISCO-SNB-1A
    Measuring Range 10~200,000 mPa路s
    Rotating Speed (r/min) 0.5, 1, 2, 5, 10, 20, 50
    Resolution 0.01 mPa路s
    Rotor 21#, 27#, 28#, 29#
    Sample Consumption 15mL-25mL
    Measuring Accuracy 卤2% (full range)
    Repeatability 卤0.5%
    Display LCD display
    Timing Measurement Function Yes
    Auto Scanning Function Automatically recommending the optimal combination of the rotor and rotating speed according to the sample viscosity.
    Measuring Range Display Function Automatically displaying the maximum viscosity value measurable for the selected rotor and speed combination.
    Data Output Interface Yes
    Power Supply AC 100-230V 50/60Hz
    Net Weight 7kg
    Size 300*300*450mm
    Standard Packing List Viscometer main machine
    Rotor 21#, 27#, 28#, 29#
    Rotor protective frame
    Sample cylinder
    Triangular base and column
    Aluminum alloy carrying case
    Power adapter
    Optional Accessories Temperature probe, Software, Mini printer

    Q1: What is a viscometer?
    A viscometer is an instrument used to measure the viscosity of fluids (liquids and gases). Viscosity is a physical quantity that indicates the internal friction within the fluid when the fluid is flowing. It is the ability of the fluid to resist deformation. It is an important indicator used to identify some finished or semi-finished products. Viscosity varies from fluid to fluid and varies with temperature. There are mainly three types of capillary viscometers, rotational viscometers and falling ball viscometers.

    Q2: What is the definition of viscosity?
    A2: When a liquid is flowing, the property of internal friction between its molecules is called the viscosity of the liquid. The viscosity of the liquid is expressed by viscosity, which is a resistance factor used to characterize the properties of the liquid. The viscosity of insulating oil is the same as the viscosity of general liquid, that is, the internal friction of the liquid, that is, when the insulating oil moves relative to laminar flow under the action of external force. The properties of insulating oil molecules that generate internal frictional resistance. The greater the internal friction of the insulating oil, the greater the viscosity, the more difficult the flow, and the poorer heat dissipation performance.

    Q3: What is a viscometer used for?
    A3: Viscosity is an important physical parameter used to measure the ability of liquids to resist flow. Using a viscometer to measure the viscosity of a liquid is an important means of industrial process control, improving product quality, and saving and developing energy. It is closely related to the fields of petroleum, chemical, electric power, metallurgy and national defense. Status plays an important role.

    Tips for installing viscometer

    • Care should be taken when loading and unloading the rotor. When loading and unloading, the connecting screw should be slightly lifted for operation. Do not use too much force, and do not force the rotor laterally to prevent the rotor from bending.
    • Please do not put the viscometer with the rotor installed on its side or upside down.
    • The connecting end face and thread of the connecting screw and rotor should be kept clean, otherwise the shaking of the rotor will be affected.
    • The viscometer should be supported by hand when it goes up and down to prevent the viscometer from falling due to its own weight.
    • After replacing the rotor, please input the new rotor number in time. After each use, the replaced rotor should be cleaned (wiped clean) in time and put back in the rotor holder. Please do not leave the rotor on the instrument for cleaning.
    • When changing the liquid under test, please clean (wipe clean) the rotor and the rotor protection frame in time to avoid measurement errors caused by the confusion of the liquid under test.
    • Viscometers and rotors are matched one-to-one, please do not confuse several instruments and rotors.
    • Please do not disassemble and adjust the instrument parts at will.
    • When moving and transporting the instrument, put the yellow cap on the connecting screw, tighten the screw, and put it in the packing box.
    • After installing the rotor, please do not rotate it for a long time without liquid, so as not to damage the shaft tip.
    • Many of suspensions, emulsions, polymers and other high-viscosity liquids are "non-Newtonian liquids", and their viscosity values vary with conditions such as shear speed and time. The inconsistency between the results measured under time and time is a normal situation, not an instrument error. The determination of non-Newtonian liquids should generally specify the rotor, speed and time.

    Thank you for buying industrial test and measurement equipment on, all products sold by SISCO and the partner cover a 12 months warranty, effective from the date of receiving the products.

    What is covered?

    SISCO is responsible for providing free spare parts, and free technical support to assist the customer to repair the defective products until the problem is solved.

    What is not covered?

    • Product purchased from anyone other than a SISCO store or a SISCO authorized reseller.
    • Expendable parts.
    • Routine cleaning or normal cosmetic and mechanical wear.
    • Damage from misuse, abuse or neglect.
    • Damage from use of parts other than SISCO approved.
    • Damage from use outside the product鈥檚 usage or storage parameters.
    • Damage from use of parts not sold by SISCO.
    • Damage from modification or incorporation into other products.
    • Damage from repair or replacement of warranted parts by a service provider other than a SISCO authorized service provider.
    • Damage caused by the application environment not meeting the product usage requirements and the failure to perform preventive maintenance.
    5.0 1
    Write your own review Close
    Cade | 10/18/2023 8:28 PM
    Stable performance and accurate data
    With stable performance and accurate data, this viscometer provides reliable results for my experimental work and greatly improves work efficiency. I like its wide range of applicability, from 10 to 200,000 mPa·s, which perfectly meets my various measurement needs.