YUEPING NDJ-7 Rotational Viscometer 750 r/min Rotation speed Viscosity range 1~ 1 × 1000000mpa.s

NDJ-7

Viscometer

Measurement range 1~ 1000000Mpa · s, rotor specification is divided into ⅱ and ⅲ units, Rotor speed 7.5/75/750rpm, Measurement accuracy +/- 5% F.S

Introduction to Yueping NDJ-7 Rotational Viscometer

Yueping NDJ-7 Rotational Viscometer is a pointer-type Rotational Viscometer, equipped with two rotor specifications of II and III units, providing three different rotor speeds, capable of viscosity testing with the support of 220C AC power supply, and through the pointer The disc displays the result of the measured viscosity value, the applicable viscosity range is 1～1×10 ⁶ mpa.s, and the measurement accuracy is ±5%. NDJ-7 Rotational Viscometer has a simple structure design, easy operation, and a white shell.

Application

Yueping NDJ-7 Rotational Viscometer is suitable for measuring the viscosity of various fluids such as oil, paint, ink, coating, plastic, slurry, rubber, latex, lotion, resin, condensed milk, cream, medicine and cosmetics , It is the required instrument for textile, chemical, petroleum, electromechanical, pharmaceutical, food, light industry, construction and other industries, as well as universities, research institutes, laboratories and analysis rooms of military departments.

Principle

NDJ-7 Rotational Viscometer is driven by a miniature synchronous motor, which rotates at a constant speed of 750 r/min, and is hardly affected by changes in load and power supply Voltage. The housing of the motor is installed in a suspended manner. It drives the rotating drum to rotate through the rotating shaft. When the rotating drum rotates in the liquid to be measured, it is subjected to viscous resistance, thereby generating a reaction force that deflects the motor housing. The motor housing is connected to two The positive and negative metal balance springs are connected, and the rotation of the case causes the balance springs to generate torque. When the torque of the balance spring and the viscous resistance torque are balanced, the pointer connected to the motor case will point out a certain value on the dial, which is proportional to the viscous resistance of the drum, so the scale reading is multiplied by the rotation kinematic viscosity

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NDJ-7 Rotational Viscometer precautions

1. The NDJ-7 Rotational Viscometer is a precision testing instrument. Please read this manual carefully before use. During use and maintenance, you must strictly abide by the conditions and steps specified in the manual.

2. The NDJ-7 Rotational Viscometer needs to be used within the specified Voltage (220V±10%) and frequency (50Hz), otherwise the rotational speed and measurement accuracy will be affected. If the grid frequency is not 50Hz, the actual viscosity needs to be obtained according to the following correction formula.

3. Do not use too much force when disassembling the coupling, insert the insert rod first, and then install and disassemble the counter-tooth knurled nut.

4. The storage of NDJ-7 Rotational Viscometer should always be kept dry.

5. The power cord needs to be plugged into the instrument first and then powered on.

6. After turning on the start switch of the motor, if the motor fails to start in time, the switch should be turned off immediately and restarted.

7. The motor should not be used continuously for a long time, generally not more than 4 hours.

8. When the NDJ-7 Rotational Viscometer leaves the factory, the agate bearing should not be shattered during transportation, so it is equipped with a shock-absorbing device, which can be removed when it is used.

9. The NDJ-7 rotary viscometer has been debugged and calibrated and verified by the measurement department before leaving the factory. Therefore, the internal parts of the instrument cannot be dismantled at will, and the hairspring is strictly prohibited.

10. Before and after use, the drum and the inner wall of the measuring device should be cleaned and dried to ensure the measuring accuracy of the instrument. The U-shaped spring hanging rings of the rotors of the II and III measuring units can be pulled out to clean the inside and outside of the rotors, and then insert the springs.

Packing list：Host x1, manual x1, certificate x1

[Note]Because the manufacturer's packaging may be updated or upgraded, the detailed packaging list shall be subject to the latest standard configuration of the manufacturer.