Mobile Viscometer NIP-HRV1800 - Advantages:

1. Purpose of the examination

This procedure is used to determine the Stormer/KU viscosity of paints, coatings and similar liquids. The mobile viscometer NIP-HRV1800 measures the rotational resistance of the medium and converts it into Cancer Units (KU), Gram force (g) or dPa·s um – depending on the selected measurement mode.

2. Equipment and preparation

• Mobile viscometer NIP‑HRV1800 with mounted rotor

• Clean sample container with a flat bottom

• Temperature-conditioned sample (typically 25 ± 0.5 °C)

• lint-free cleaning wipes

• Reference fluid for optional calibration check

Before the start:

• Clean the rotor and check for residue.

• Check battery level or activate mains operation.

• Homogenize the sample without introducing air bubbles.

• Ensure that the sample height is sufficient for the rotor immersion depth.

3. Device settings

1. Turn on the device.

2. Measurement program choose.

3. Check rotor number.

4. If indicated, perform zero-point adjustment.

5. Position the device vertically above the sample container.

The NIP-HRV1800 internally stabilizes its reference sensor before the start of the measurement.

4. Test procedure

Step 1 — Immerse rotor

Lower the rotor completely into the sample up to the mark. Avoid contact with the container walls to prevent mechanical damage.

Step 2 — Start measurement

START Press. The viscometer rotates the rotor at the defined speed.

Step 3 — Stabilization Phase

During rotation, the device detects:

• Torque resistance

• Flow resistance

• Dynamic load on the rotor

The electronics filter out interference and stabilize the measured value. This stabilization typically takes [time period missing]. 5 - 10 seconds, depending on the viscosity.

Step 4 - Read the result

Once a stable state is reached, the display shows the exact viscosity value of the sample.

Step 5 — End measurement

Lift the device vertically out of the sample. STOP Press. Clean the rotor immediately with a suitable solvent and a lint-free cloth.

5. Documentation and report

The NIP-HRV1800 calculates all values internally. The following information should be documented for technical reports:

• Sample designation

• Test temperature

• Rotor number

• viscosity

• Optional: g-value and dPa·s

• Notes on deviations or special conditions

6. Quality control

• The sample must be homogeneous and free of bubbles.

• Repeat the measurement if the value fluctuates by more than ±0.2.

• Regular calibration checks using reference liquids.

• Uniform container geometry for reproducible results.

7. Safety instructions

Wear appropriate protective equipment when handling solvent-based coatings. Dispose of cleaning fluids in accordance with local regulations.