Laboratory sector
    Viscometer
    SKU: YR06639

    Digital rotary viscometer YR06639//YR06644

    Manufacturer: Kalstein

    Manufacturer: Kalstein

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    Description

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

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