Rotary Digital Viscometer NDJ-5S User Manual

1. Introduction

The HFCCYBGS NDJ-5S Digital Rotary Viscometer is an advanced instrument designed for precise measurement of liquid viscosity. Utilizing sophisticated mechanical design, manufacturing processes, and microcomputer control technology, it ensures accurate data acquisition and clear display via an LCD screen with blue backlight.

This viscometer is widely used across various industries for determining the liquid viscose capacity and absolute viscosity, including applications in grease, painting, pharmacy, and adhesives.

Figure 1: The NDJ-5S Digital Rotary Viscometer with its protective carrying case and power adapter.

2. Key Features

• High measuring accuracy.
• Stable and reliable measured display.
• Easy operation and clear read-out.
• Excellent anti-interference capabilities.

3. Product Specifications

3.1. Measurement Range Table

Figure 2: Dimensional overview of the NDJ-5S Viscometer and its carrying case.

4. What's in the Box

The standard product packaging includes the following components:

• Digital Rotary Viscometer: 1 unit
• Rotors: 1#, 2#, 3#, and 4# (1 of each)
• Power Adapter: 1 set
• Protection Bracket: 1 unit
• Base: 1 unit
• Lifting Assembly: 1 set
• Operation Manual: 1 unit
• License: 1 unit
• Quality Certificate: 1 unit

Note: The 0# rotor is not included in the standard package but can be acquired separately for measuring lower viscosities.

Figure 3: Contents of the NDJ-5S Viscometer carrying case.

Figure 4: The set of 1#, 2#, 3#, and 4# rotors.

5. Setup and Assembly

Follow these steps to properly set up your NDJ-5S Digital Rotary Viscometer:

1. Unpacking: Carefully remove all components from the packaging. Verify that all items listed in the "What's in the Box" section are present.
2. Base Assembly: Place the base on a stable, level surface.
3. Lifting Assembly Installation: Attach the lifting assembly to the base. Ensure it is securely fastened.
4. Viscometer Unit Placement: Mount the main viscometer unit onto the lifting assembly. Ensure it is firmly seated and aligned.
5. Power Connection: Connect the power adapter to the viscometer unit and then plug it into a suitable 110V or 220V AC power outlet.
6. Rotor Selection: Select the appropriate rotor (1#, 2#, 3#, or 4#) based on the expected viscosity range of your sample. Refer to the "Measurement Range Table" in the specifications section.
7. Rotor Attachment: Carefully screw the selected rotor onto the bottom of the viscometer's spindle. Ensure it is hand-tightened, but do not overtighten.
8. Protection Bracket: If necessary, attach the protection bracket to prevent accidental contact with the rotating rotor.

Figure 5: Assembled NDJ-5S Viscometer unit.

Figure 6: Close-up of the viscometer's display and control panel.

6. Operating Instructions

This section outlines the general procedure for operating the NDJ-5S Digital Rotary Viscometer to measure liquid viscosity.

1. Power On: Turn on the viscometer using the power switch. The LCD display will illuminate.
2. Rotor Selection and Attachment: Ensure the correct rotor is securely attached as per the setup instructions.
3. Sample Preparation: Pour the liquid sample into a suitable container. Ensure the sample volume is sufficient to fully immerse the rotor up to the marked line.
4. Rotor Immersion: Carefully lower the viscometer unit using the lifting assembly until the rotor is immersed in the sample liquid. Ensure no air bubbles are trapped around the rotor.
5. Set Parameters:
   • Use the control buttons (up/down arrows) to select the desired rotor speed (6, 12, 30, or 60 rpm).
   • Press the "OK" button to confirm the settings.
6. Start Measurement: The viscometer will automatically begin rotating the rotor and display the viscosity reading in mPa·s on the LCD screen.
7. Read Measurement: Allow the reading to stabilize before recording the viscosity value.
8. Clean Up: After measurement, carefully raise the viscometer unit, remove the rotor, and clean both the rotor and the sample container thoroughly.

Figure 7: Detailed view of the viscometer's digital display during operation.

6.1. Applications

The NDJ-5S Digital Rotary Viscometer is suitable for measuring the viscosity of various liquids, including but not limited to:

• Grease
• Paints and Coatings
• Pharmaceutical Liquids
• Adhesives
• Food Products
• Cosmetics

Figure 8: Examples of applications for the NDJ-5S Viscometer.

7. Maintenance and Care

Proper maintenance ensures the longevity and accuracy of your viscometer.

• Cleaning: After each use, thoroughly clean the rotor and any parts that came into contact with the sample. Use appropriate cleaning agents that will not damage the materials.
• Storage: Store the viscometer and its accessories in the provided carrying case in a dry, dust-free environment when not in use. Avoid extreme temperatures and humidity.
• Handling Rotors: Handle rotors with care to prevent bending or damage, which can affect measurement accuracy. Store them in their designated case.
• Calibration: Regular calibration is recommended to maintain measurement accuracy. Refer to the official service guidelines or contact customer support for calibration procedures.
• Power Off: Always power off the unit and disconnect it from the power supply when not in use or during cleaning/maintenance.

8. Troubleshooting

This section provides solutions to common issues you might encounter with your NDJ-5S Digital Rotary Viscometer.

If you encounter issues not listed here or if the suggested solutions do not resolve the problem, please contact HFCCYBGS customer support for assistance.

9. Warranty and Support

For warranty information and technical support, please refer to the warranty card included in your product packaging or visit the official HFCCYBGS website. Keep your purchase receipt as proof of purchase for warranty claims.

Manufacturer: HFCC

Brand: HFCCYBGS

Date First Available: June 21, 2023