ASTM D1092 Apparent Viscosity of Lubricating Greases Tester

Apparent Viscosity of Lubricating Greases Tester

ASTM D1092

 Product Model: JF0681D

Testing Range

This instrument covers measurement, in poises, of the apparent viscosity of lubricating greases in the temperature range from -54 °C to 38 °C (-65 °F to 100 °F).  Measurements are limited to the range from 25 P to 100 000 P at 0.1 s^-1 and 1P to 100 P at 15 000 s^-1.

At very low temperatures the shear rate range may be reduced because of the great force required to force grease through the smaller capillaries.

Instrument Introduction

The instrument mainly measures the apparent viscosity of lubricating grease and is used to predict the pressure drop in the lubricating grease system under the specified temperature and steady flow state.A floating piston driven by a hydraulic system forces the sample through the capillary tube. The apparent viscosity was calculated from the pre-determined flow rate and the force exerted in the system according to the Poiseuille’s equation. Eight capillaries of different diameters and two pump speeds were used to determine the apparent viscosity at 16 shear rates, and the results of the experiments were expressed as double logarithmic curves of apparent viscosity versus shear rate.

Technical Parameter

1. Applicable standard: ASTM D1092, SH/T0681

2. Constant temperature method: External thermostat

3. Refrigeration method: High-quality compressor refrigeration

4. Temperature control: Digital display PID temperature controller

5. Pressure display: Pressure gauge

6. Pressure control: Pressure regulating valve

7. Temperature control accuracy: ±0.1℃

8. Temperature range: -54℃~38℃

9. Measurement range: 0.1 s^-1, 25~10000000 P; 15000 S^-1, 1~100 P

10. Working power supply: AC220V 50HZ

11. Power of the whole machine: 600W

12. HS Code: 9027899090

Main Feature

1. Stainless steel sample cylinder, precision machined, matched with precision piston;

2. Four separate pressure pipeline systems;

3. 8 sets of special capillaries, which meet the standard requirements;

4. Microcomputer temperature controller, digital display, PT100 temperature sensor, high precision

5. Integrated hydraulic pump, the flow is more stable;

6. Imported motor drive gearbox;

7. Electric switching speed, easy to operate;

8. A set of special tools.