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NXNQ0020 Rotational Viscometer is a fully automatic Rotational Viscometer designed for oil well cement slurry rheology testing in accordance with API standards. It is widely used in oilwell cementing laboratories, cement additive evaluation, slurry formulation development, and quality control testing.
Also known as a Cement Slurry Viscometer, Oilfield Rotational Viscometer, or Fann Type Viscometer, this instrument can automatically measure slurry viscosity, record test data, conduct gel strength testing, and calculate rheological parameters through regression analysis or two-point methods.
The NXNQ Hummingbird Series adopts a touch screen interface, automatic lifting platform, LED lighting system, automatic mode switching, and Ethernet/USB communication functions, providing efficient and user-friendly laboratory operation.
Model: NXNQ0020
Type: Rotational Viscometer / Cement Slurry Rheology Tester
Series: Hummingbird Series
Application: Cement slurry viscosity and gel strength testing
1. What Is a Rotational Viscometer Used For?
A Rotational Viscometer is used to evaluate the rheological properties of oilwell cement slurry, including viscosity, gel strength, shear stress, and flow behavior under different rotational speeds.
The instrument is widely used for:
- Cement slurry rheology testing
- Gel strength testing
- Cement additive performance evaluation
- Slurry formulation optimization
- API cement testing laboratory applications
The NXNQ0020 can automatically perform tests according to API standards and record data automatically, improving testing efficiency and reducing manual operation errors.
2. Key Features of NXNQ0020 Rotational Viscometer
Automatic, Manual, and Gel Strength Test Modes
Users can switch flexibly between automatic mode, manual mode, and gel strength test mode according to different testing requirements.
Automatic API Standard Testing and Data Recording
In automatic mode, the instrument measures slurry viscosity strictly according to API standards, automatically changes rotational speeds, calculates average readings, and records test data on the touch screen.
Automatic Gel Strength Test Function
The gel strength test can be completed automatically. Users only need to tap the "GEL" button on the home screen, and the instrument will complete the test and record data automatically.
Touch Screen Display for Easier Operation
The touch screen interface makes it convenient to view test data, switch rotational speeds, and operate the instrument.
Automatic Lifting Test Platform
The electrically operated lifting platform can ascend and descend automatically. Built-in sensors allow the platform to stop at specific positions, improving operational simplicity and user experience.
LED Lights for Slurry Observation
LED lights above the test platform help users observe slurry level and test progress conveniently while keeping slurry level aligned with the rotor reference line.
USB and Ethernet Communication Functions
The USB port allows screenshots of test results to be saved for data statistics. The Ethernet port enables connection with computer software for test data recording and remote software upgrades.
Regression Analysis and Two-Point Method Calculation
The instrument can automatically calculate rheological data using regression analysis or the two-point method after testing is completed, reducing manual calculations and improving efficiency.
Smart Calibration System
The smart calibration system reduces the need for frequent spring adjustment as long as the spring remains linear, improving calibration reliability and convenience.
3. NXNQ0020 Rotational Viscometer Technical Specifications
| Item | Specification |
| Model | NXNQ0020 |
| Type | Rotational Viscometer / Cement Slurry Rheology Tester |
| Maximum Sample Temperature | 93℃ |
| Sample Cup Volume | 350 ml |
| Rotation Speeds | 1, 2, 3, 6, 10, 20, 30, 60, 100, 200, 300, 600 rpm |
| Shear Rate Range | 1.7 - 1022 s⁻¹ |
| Maximum Reading | 430 |
| Input Voltage | Applicable for AC100-230V |
| Input Power | 200 W |
| Dimensions (W × D × H) | 21 × 35 × 53 cm |
| Mass | 25 kg |
4. Optional Heater System (PXN Series)
The optional heater (Part No.: PXNxxx) is designed for use together with the NXNQ rotational viscometer.
Key features include:
- Thermocouple temperature measurement for higher accuracy
- Digital temperature display for easier observation
- Quick coupling thermocouple connection for easier cleaning and maintenance
- Temperature controller for stable temperature control
- Handle design for improved safety and practicality
5. Why Automatic Rheology Testing Is Important
Traditional rotational viscometers require users to manually change rotational speeds and record test data, which is time-consuming and may introduce operational errors.
The NXNQ0020 automatic rotational viscometer improves testing efficiency by:
- Automatically switching rotational speeds
- Automatically recording and displaying test data
- Automatically calculating rheological parameters
- Automatically conducting gel strength testing
This greatly simplifies laboratory operation and improves testing consistency.
6. Typical Applications of NXNQ0020 Rotational Viscometer
The NXNQ0020 is widely used in:
- Oilwell cementing laboratories
- Cement additive manufacturers
- Cement slurry R&D centers
- Universities and research institutes
- Cementing service companies
Suitable slurry systems include:
- API Class G / Class H cement slurry
- Lightweight cement slurry systems
- Latex cement slurry systems
- High-density cement slurry systems
- Salt-resistant cement slurry systems
7. Delivery, Installation and After-Sales Support
We provide complete technical support for the NXNQ0020 Rotational Viscometer, including:
- Operation manual and test guidance
- Online technical support and training
- Spare parts supply and maintenance support
- Warranty: 【12 months】
Delivery lead time: 【30 days】
Packing: export standard wooden case
8. Frequently Asked Questions (FAQ)
Q1: What test modes are available on NXNQ0020?
A: The instrument supports automatic mode, manual mode, and gel strength test mode.
Q2: Can the instrument automatically conduct gel strength testing?
A: Yes. Users can tap the "GEL" button and the instrument will automatically complete the gel strength test and record data.
Q3: Does the instrument support computer connection?
A: Yes. The instrument is equipped with USB and Ethernet ports for data recording, screenshot saving, and remote upgrades.
Q4: What is the maximum sample temperature?
A: The maximum sample temperature is 93℃.
Q5: What rotational speeds are available?
A: The instrument supports 12 rotational speeds from 1 rpm to 600 rpm.
9. Request a Quote for NXNQ0020 Rotational Viscometer
If you are looking for a reliable Rotational Viscometer or Cement Slurry Rheology Tester for oilwell cement laboratory applications, NXNQ0020 is an excellent solution for automatic rheology and gel strength testing.
We can provide:
- Full datasheet and technical specification sheet
- Operation manual and accessories list
- Recommended spare parts list
- Quotation and delivery schedule
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