Lab Digital Rotational Viscometer

Digital Rotational Viscometer Description

Laboratory High Viscosity Rotational Viscometer

Viscometer Features:

Repeatability error: ±0.5%, Measurement accuracy: ±1%;

Viscosity measurement range: 1–320,000 Pa·s;

Rotor speed 4-58, temperature display 0-99°C, 50 measurement records.

Direct data transmission via USB/RS232 interface,

One-touch automatic scanning; Viscosity curve generation.

Six core advantages

1. High-end chip, microcomputer control technology.

More advanced mechanical design technology, high-stability movement, manufacturing process microcomputer control technology, and accurate data collection.

Repeatability error +0.5%, measurement accuracy +1%.

2. One-click automatic scanning,

Easily recommend the adapted rotor and speed.

Automatic scanning testing is performed when the viscosity of the sample is uncertain, and the rotor and rotation speed are quickly adapted, greatly improving measurement efficiency.

3. High-resolution IPS color screen, clear display, fast response, and clearer and more intuitive readings.

Human-computer interaction makes data viewing more convenient.

4. Viscosity curve function.

Temperature and viscosity curve display to monitor sample viscosity and temperature changes in real time.

5. Direct connection to device, lightning transmission/printing.

Supports RS232 interface to realize lightning transmission/printing of measurement data.

6. Viscosity unit switching, viscosity full parameter measurement.

Product Video

Technical Specifications / Model Tables

DV Series

Unit conversion：

1 mPa·s = 1 cP

1 Pa·s = 1000 mPa·s = 1000 cP = 1 kP

320 McP = 320,000 kP = 320,000 Pa·s

SNB Series

Product Overview

Laboratory Digital Rotational Viscometer

A laboratory digital rotational viscometer is designed to measure the viscosity and rheological properties of liquids, pastes, and semi-solid materials. It provides clear, direct readings of a sample's flow behavior, consistency, and stability, making it an essential instrument for quality control, product development, and formulation research in the chemical, food, pharmaceutical, and other industries.

Working Principle

The instrument uses a motor to rotate a spindle at a constant speed within the sample. The sample's viscosity generates resistance against the rotating spindle, producing a torque that is detected by a sensor and converted into an electrical signal. A microprocessor processes the signal and displays the viscosity value directly. Some models support measurements at multiple rotational speeds, allowing users to generate viscosity curves and analyze the rheological behavior of non-Newtonian fluids.

Applications

Laboratory rotational viscometers are widely used in the coatings and inks industry for viscosity adjustment, in adhesive manufacturing for curing process monitoring, in food and dairy production for texture and consistency evaluation, in biopharmaceutical applications for gel testing, in cosmetics and personal care for paste consistency measurement, and in the petroleum and chemical industries. They are particularly suitable for manufacturing processes and formulation development where precise viscosity control is required.

Lab Digital Rotational ViscometerSelection Guide

When selecting a laboratory digital rotational viscometer, several factors should be considered. A measurement range of 1–320,000 Pa·s should be evaluated against the viscosity range of the samples being tested. Measurement accuracy of ±1% and repeatability of ±0.5% help ensure reliable results. One-touch automatic scanning can quickly identify a suitable spindle and rotational speed, while 4–58 speed combinations accommodate different fluid testing requirements. A PT1000 temperature probe combined with precise temperature control helps improve measurement accuracy for temperature-sensitive samples. Data storage for 20–50 measurements, viscosity curve generation, and USB or RS232 data transfer support result traceability and report export.

Rotational Viscometer Product Detail

Three measurement modes, Match different measurement needs,

The operation is simpler and the results are more efficient.

1. Standard measurement

Automatically stops after measurement stabilizes.

2. Timing measurement

It will automatically stop when the set time is up. The maximum set time is 99 hours.

It will automatically stop when the time comes and the result will be more controllable.

3. Automatic scanning

Automatically scan and intelligently recommend the appropriate rotor speed.

The best comprehensive performance results are more accurate.

1. Measurement data interface display.

2. Viscosity/temperature measurement interface display.

PT1000 temperature probe,

High-precision temperature control, temperature measurement range: 0-99°C.

1. Level device, equipped with a level device on the top, making leveling more convenient and intuitive.

2. 304 stainless steel rotor, rotors of various specifications, adaptable to a variety of different samples.

3. 3.5-inch full-color IPS screen.

Readings are clearer and more intuitive, and data viewing is more convenient.

1. Universal interface reduces test errors and protects the shaft tip from damage.

2. 304 stainless steel rotor protection frame to prevent damage to the rotor during operation.

3. The machine head is lifted and lowered with a fixed handwheel, the machine head is lifted and lowered with a fixed handwheel, and the stainless steel support rod.

4. Horizontal adjustment knob at the bottom, easy to adjust and smooth to operate.

Rotor Accessories Details

Rotor set No. 1-4.

Rotors No. 1-4 are suitable for conventional liquid viscosity measurement with a viscosity of 100 mpa.s or above.

1. The sample to be tested should be placed in a straight container with a diameter ≥70mm and a height ≥130mm.

2. The sample volume is recommended to be no less than 400ml and must be completely immersed in the rotor groove.

No. 0 rotor set (optional)

No. 0 rotor is suitable for measuring low-viscosity liquids with a viscosity of less than 100 mpa.s. It can measure low-viscosity samples as low as 0.1 mPa.s. The sample volume only needs 25ml.

1. Rotor No. 0.

2. Liquid level mark.

3. External test tube.

4. Liquid level mark.

5. External test barrel solid screw.

Rotational Viscometer Product Packaging

Packing List

From left to right:

Plastic bag, foam, instrument box + carton packaging.

OEM / ODM Services

MOQ: 1 Piece. Buyer'S Logo Customization Is Available For Orders of 50 Pieces or More. ODM Orders Are Shipped Within 12–25 Days After Order Confirmation.

Customer Photos/ Customer Review

I tested it as soon as I received it. It has all the speed ranges, the Chinese and English interfaces are easy to switch, and the units can also be changed. The customer service answered the installation questions very carefully, the packaging was tight, and there were no bumps. I am very satisfied.

After receiving it, I tested it several times. The experimental data is very stable, and the repeatability error is very small, reaching ±0.05%. There is almost no difference when testing samples from the same batch. The workmanship of the machine is solid and the stand is stable. It can also measure the high viscosity of materials and it has a full-color LCD screen. It is very convenient and intuitive to observe the data.

The measurement range is extremely wide, and it can measure both dilute solutions and high-viscosity samples. The LCD screen is easy to operate and can be used quickly. Equipped with a standard temperature sensor, the temperature can be viewed in real time when measuring samples, and the data is stable and reproducible.

The machine is equipped with a shock-proof base, which will not bump the sensor when moving, and the accuracy can be maintained well for long-term use. It would be perfect if the height could be increased by 5 cm.

The rotation speed is uniformly controlled, and the measured viscosity data is very repeatable, so you can do experiments with confidence. The LCD screen is comfortable to look at and the operation panel is simple and easy to understand.

The color screen viscometer has a direct reading from the digital display, so you don’t have to calculate it yourself like a pointer, which saves a lot of trouble.