Digital rotary viscometer YR06639//YR06644

The YR06639//YR06644 Series Digital Rotary Viscometer is a high-precision tool designed for advanced fluid analysis. With a measurement capacity reaching up to 320 million mPa.S, this equipment is the ideal solution for laboratories and industries working with high-viscosity materials. Its intuitive design allows operators to obtain fast and reliable results, offering accuracy comparable to the most demanding international standards. It is the perfect device for those seeking cutting-edge technology at a competitive cost without sacrificing precision.

Design and Technology

This equipment features a control panel with a touch keyboard and a large LCD screen that facilitates the reading of complex data. Key technological innovations include:

• Auto-Scanning: The system recommends the optimal combination of rotor and speed for unknown samples.
• Dual Connectivity: Includes two RS232 ports, allowing simultaneous connection to a computer for data management and a printer for physical records.
• Rheological Analysis: Ability to display shear rate and shear stress, allowing for an in-depth study of fluid behavior.
• Computerized Calibration: Each measurement range is software-adjusted to minimize human error.

Frequently Asked Questions (FAQ)

• Is the device difficult to level? No, it features a level control on the front for quick and visual adjustment.
• Can I measure very hot samples? Yes, using the optional high-temperature furnace, it can measure molten materials such as asphalt or waxes.
• What if my sample size is very small? There is an optional small sample adapter (SSR) designed specifically for volumes of only 7 to 11 ml.
• Does it come with PC software? Yes, it can be connected to a computer via the RS232 interface to track viscosity curves.

Advantages and Disadvantages

Advantages:

• Extremely wide measurement range (up to 320M mPa.s).
• Stable results and high resistance to electrical interference.
• Easy conversion of units (mPa.s, Pa.s, P, cP) and temperature (°C/°F).
• Excellent quality-to-price ratio compared to imported brands.

Disadvantages:

• Requires optional accessories (Pt100 probe) to measure temperature with 0.1°C precision.
• The equipment's size (12 kg) requires a fixed and stable workspace.

Field Use and Recommendations

This viscometer is essential in industrial quality control laboratories and biochemical research centers. Its use is highly recommended in:

• Chemical Industry: Production of paints, inks, and adhesives.
• Cosmetics: Formulation of high-density creams and gels.
• Food Industry: Analysis of starches, pulps, and syrups.
• Construction: Evaluation of asphalts and hot-melt glues.
• Operating Tip: To achieve maximum precision, ensure the front level bubble is perfectly centered before starting any measurement.

Technical Specifications

Specification	YR06639	YR06640	YR06641	YR06642	YR06643	YR06644
Speed (r/min)	0.3 – 100 (37 tipos)	0.3 – 100 (37 tipos)	0.3 – 100 (37 tipos)	0.1 – 200 (58 tipos)	0.1 – 200 (58 tipos)	0.1 – 200 (58 tipos)
Rank R2 - R7 (mPa.s)	100 - 13.000.000	200 - 26.000.000	800 - 104.000.000	100 - 40.000.000	200 - 80.000.000	800 - 320.000.000
Rank URL (mPa.s)	6.4 - 1.000	12.8 - 1.000	51.2 - 2.000	3.2 - 1.000	6.4 - 1.000	25.6 - 2.000
Rotor 21# (mPa.s)	50 - 167.000	100 - 333.000	400 - 1.300.000	25 - 500.000	50 - 1.000.000	200 - 4.000.000
Rotor 27# (mPa.s)	250 - 834.000	500 - 1.700.000	2.000 - 6.700.000	125 - 2.500.000	250 - 5.000.000	1.000 - 20.000.000
Rotor 28# (mPa.s)	500 - 1.700.000	1.000 - 3.300.000	4.000 - 13.300.000	250 - 5.000.000	500 - 10.000.000	2.000 - 40.000.000
Rotor 29# (mPa.s)	1.000 - 3.300.000	2.000 - 6.600.000	8.000 - 26.600.000	500 - 10.000.000	1.000 - 20.000.000	4.000 - 80.000.000
Dosage R1-R7	500 ml	500 ml	500 ml	500 ml	500 ml	500 ml
Dosage ULR	21 ml	21 ml	21 ml	21 ml	21 ml	21 ml
Dosage 21# / 27#	7.8 ml / 11.3 ml	7.8 ml / 11.3 ml	7.8 ml / 11.3 ml	7.8 ml / 11.3 ml	7.8 ml / 11.3 ml	7.8 ml / 11.3 ml
Dosage 28# / 29#	12.6 ml / 11.5 ml	12.6 ml / 11.5 ml	12.6 ml / 11.5 ml	12.6 ml / 11.5 ml	12.6 ml / 11.5 ml	12.6 ml / 11.5 ml
Measurement Error	±1%	±1%	±1%	±1%	±1%	±1%
Repetitive Error	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%	±0.5%
voltage	110V / 220V	110V / 220V	110V / 220V	110V / 220V	110V / 220V	110V / 220V
Dimensions	300*300*450(mm)	300*300*450(mm)	300*300*450(mm)	300*300*450(mm)	300*300*450(mm)	300*300*450(mm)
Weight	12 kg	12 kg	12 kg	12 kg	12 kg	12 kg