Digital Viscometer

The viscometer refers to an instrument used to measure the viscosity of fluids (liquid and gas). NDJ and DV series digital viscometer has the advantages of high measurement accuracy, stable viscosity readings, convenient operation, and good anti-interference performance. They are widely used to determine the viscosity of various fluids such as grease, paint, food, medicine, adhesives, and cosmetics. It can also be used to measure the viscous resistance of liquids and the absolute viscosity of liquids.

NDJ Viscometer Operation

Features of Digital Viscometer

1. Stable speed.
2. It can be used as a stand-alone computer, or it can be connected to a micro printer and a computer to realize data collection.
3. The speed, rotor number, viscosity, torque, and temperature can be displayed simultaneously.
4. Different standard spindles can be selected according to needs.

Low Viscosity Viscometer:

NDJ-5S 20-100000mPa·s Low Viscosity Viscometer

• Measuring Range: 20～100,000 mPa·s
• Rotating Speed: 6/12/30/60
• Standard Spindles: Code L1,L2,L3,L4

NDJ-8S 20-2000000mPa·s Low Viscosity Viscometer

• Measuring Range: 20～2,000,000 mPa·s
• Rotating Speed: 0.3/ 0.6/ 1.5/ 3/ 6/ 12/ 30/ 60
• Standard Spindles: Code L1, L2, L3, L4

LVDV-2 6-6000000mPa·s Low Viscosity Viscometer

• Measuring Range: 6～6,000,000 mPa·s
• Rotating Speed: 0.1～200(Stepless Gear)
• Standard Spindles: L1,L2,L3,L4

LVDV-1 12-6000000mPa·s Low Viscosity Viscometer

• Measuring Range: 12～6,000,000 mPa·s
• Rotating Speed: 0.1~99.9 (Stepless Gear)
• Standard Spindles: L1,L2,L3,L4

Medium & High Viscosity Viscometer:

RVDV-1 80-40000000mPa·s Medium Viscosity Viscometer

• Measuring Range: 80～40,000,000 mPa·s
• Rotating Speed: 0.1~99.9 (Stepless Gear)
• Standard Spindles: R2,R3,R4,R5,R6,R7

RVDV-2 40-40000000mPa·s Medium Viscosity Viscometer

• Measuring Range: 40～40,000,000 mPa·s
• Rotating Speed: 0.1～200(Stepless Gear)
• Standard Spindles: R2,R3,R4,R5,R6,R7

HBDV-2 320-320000000mPa·s High Viscosity Viscometer

• Measuring Range: 320～320,000,000 mPa·s
• Rotating Speed: 0.1 ～ 200 (Stepless Gear)
• Standard Spindles: Code R2, R3, R4, R5, R6, R7

HBDV-1 60-320000000mPa·s High Viscosity Viscometer

• Measuring Range: 640～320,000,000 mPa·s
• Rotating Speed: 0.1~99.9 (Stepless Gear)
• Standard Spindles: R2,R3,R4,R5,R6,R7

High-Temperature Digital Viscometer:

HBDV-1H High-Temperature Digital Viscometer

• Temp. Range: RT+10℃~300℃
• Measuring Range: 800~80,000,000 mPa·s
• Rotating Speed: 0.1~99.9(Stepless Gear)
• Spindles: 21、27、28、29

HBDV-2H High-Temperature Digital Viscometer

• Rotating Speed: 0.1~200(Stepless Gear)
• Temp. Range: RT+10℃~300℃
• Measuring Range: 400~80,000,000 mPa·s
• Spindles: 21、27、28、29

LVDV-1H High-Temperature Digital Viscometer

• Temp. Range: RT+10℃~300℃
• Measuring Range: 10~1,000,000 mPa·s
• Rotating Speed: 0.1~99.9 (Stepless Gear)
• Spindles: 21、27、28、29

LVDV-2H High-Temperature Digital Viscometer

• Temp. Range: RT+10℃~300℃
• Measuring Range: 5~1,000,000 mPa·s
• Rotating Speed: 0.1~200 (Stepless Gear)
• Spindles: 21、27、28、29

RVDV-1H High-Temperature Digital Viscometer

• Temp. Range: RT+10℃~300℃
• Measuring Range: 100~10,000,000 mPa·s
• Rotating Speed: 0.1~99.9 (Stepless Gear)
• Spindles: 21、27、28、29

RVDV-2H High-Temperature Digital Viscometer

• Temp. Range: RT+10℃~300℃
• Measuring Range: 50~10,000,000 mPa·s
• Rotating Speed: 0.1~200 (Stepless Gear)
• Spindles: 21、27、28、29

SNB-RH High-Temperature Digital Viscometer

• Temp. Range: RT+10℃~300℃
• Measuring Range: 50~200,000 mPa·s
• Rotating Speed: 5,10,20,50,100
• Spindles: 21、27、28、29

Structure of Digital Rotational Viscometer

It can be used to measure the absolute viscosity of Newtonian liquids and the apparent viscosity of non-Newtonian liquids.
It is widely used to test the viscosity of oils, paints, plastics, coatings, detergents, medicines and other items.

Advantages of Digital Rotational Viscometer

It can be used to describe shear thinning and time-dependent behavior and can measure the viscosity of opaque, settling or non-Newtonian fluids.
The speed of the rotating part can be simply adjusted for easy operation.
Connect to a computer via RS232 interface to facilitate automatic measurements.

Applications of Digital Viscometer

Rotational viscometer has a very close relationship with petroleum, chemical, electric power, textile, metallurgy, textile and national defense, and other fields.

It is an important means for industrial process control, product quality improvement, and energy conservation and development. In scientific fields such as physical chemistry and fluid mechanics, viscosity measurement plays an important role in understanding fluid properties and studying flow conditions. For example, in the medical industry, measuring the viscosity of blood and physiological fluids is a newly developed diagnostics, especially an important diagnostic method for cardiovascular diseases, cancers, tumors, and other difficult and miscellaneous diseases. It is widely used in petroleum, grease, paint, ink, slurry, food, medicine, coating, cosmetics, and other industries.

How to Select Digital Viscometer Spindle

Spindles with mark * are optional.
The NO. 21, 27, 28 and 29 spindles are equipped with small sample adaptor which is optional; temperature-controlled heaters are standard.
K=1000, M=1000000.

How to Calibrate a Viscometer?

The calibration process is a precise measurement process. If the data obtained is inaccurate, the more you calibrate, the worse the test results will be. The use of standard fluids has very high temperature requirements. It can’t be guaranteed that all customers have this condition or can operate the viscometer in a standardized manner, so viscometer manufacturers will not let customers calibrate themselves.

If customers insist on calibrating themselves, they can buy standard fluids for measurement. While trying to ensure the temperature conditions, if the measurement results are very different after comparison, the equipment needs to be returned to the factory for repair, otherwise it can continue to be used.

Digital Rotational Viscometer Optional Accessories

Extreme low viscometer adapter (with one spindle L0)
Small sample adapter (with spindle 21, 27, 28 and 29 each)
RTD temperature probe
Temperature-controlled heater
Printer
Data acquisition analysis and plotting software
DV programmable download software

Why Choose Us?

One-Station Shopping

“Multiple suppliers” have always been an issue in the procurement process. Drawell as a one-stop laboratory equipment and scientific instruments supplier, can perfectly solve this problem. In addition to manufacturing our own equipment, we also represent other laboratory equipment. Our product lines are rich and diverse at competitive prices. Provide one-stop service to customers.

Customer-centric Services

User Training – Training by Drawell skilled engineers about installation, debug tests, technical services, etc. It can happen in our factory in China, or at the site in the customers’ country. Cost depends on where and when the training happens.

Online Support

To discuss the problem and get it resolved, online chats, real-time video calls, and remote guidance. For the after-sales stage, our online technical guidance is free and ready forever.

100% Quality Guarantee Policy

1 year free official warranty, including repairing quality-damaged parts, and offering replacements of selected parts (shipping cost is extra). 5% of the product price is charged for extending the warranty before the end of the official warranty.

Order Process

FAQ

We are a factory and can provide OEM services using the customer’s brand. The standard warranty is one year; extensions to the warranty period can be negotiated separately.

We could provide Online instruction; Real-time support by video call or voice chat; During warranty time, we can send product accessories when you need them for free; Technical guidance is free and ready forever.

Digital rotational viscometers are suitable for liquids and semi-fluid materials such as oils, paints, coatings, adhesives, cosmetics, pharmaceuticals, detergents, food products and slurries.

Drawell models cover a wide range from approximately 5 to 320,000,000 mPa·s, depending on the model, spindle and rotational speed.

Yes. Rotational viscometers can measure the apparent viscosity of non-Newtonian fluids and can be used to evaluate viscosity changes at different rotational speeds.

The spindle and speed should be selected according to the sample viscosity and required torque range.

Lower-viscosity samples generally require larger spindles and/or higher speeds, while higher-viscosity samples require suitable smaller spindles and lower speeds.

Yes. Drawell high-temperature viscometers are designed for materials such as asphalt, hot-melt adhesives and polyethylene wax. Selected H-series models operate from RT +10°C to 300°C.

NDJ Series – economical routine viscosity testing
LVDV Series – low viscosity
RVDV Series – medium viscosity
HBDV Series – high viscosity
H-Series – high-temperature viscosity testing