Operating Instruction

-NDJ-5S-8S-9S

Digital Viscometer

CONTENT

1. Operating principle and Using …………………1

2. Main Technical Data ……………………………1

3. Application Environment ………………………2

4. Structher and Installation ………………………2

5. Using……………………………………………3

6. Panel operation…………………………………3

7. Precaution………………………………………6

8. Packing list………………………………………8  
1：Operating priciple and Using

   NDJ Series Digital Viscometer (NDJ-5S-8S-9S) is a smart instrument,depending on the technology of A 16-bit high-performance single chip,which has totally changed the previous rotor method. Stepper motor runs accurately and stably as the setting speed procedure. And then torque sensor will drive rotor rotation in a constant speed. When rotor suffers viscous resistance in the tested liquid, the viscosity of the tested liquid will show on the screen by testing and handling.

   Compared with the same instrument, this one has the merit of high measure accuracy, stabled in rotate speed, wide working voltage (available in 110V, 220V, 50Hz, 60Hz) and so on. It is very convenient for users to choose the rotor and rotor velocity of the testing liquid correctly, because of the function of measured value occupies full range.

    It can widely used to measure Dynamic Viscosity of solvent based adhesive, latex, biochemicals, oil paint, coating, cosmetic, printing ink, pulp,starch, food and so on.

2: Main Technical Data

1、NDJ-1S，NDJ-5S

    Measurement range：10mPa.S-100,000mPa.S(1mPa.S=1cp)

    Measurement error：NDJ-1S:±5%，NDJ-5S:±3%,

    Rotor types：1#, 2#, 3# and 4# rotors(0# is optional accessory)

    Rotor velocity：6、12、30、60RPM/min

    Dimensions：95*130*155 (not including classis)

    Net weight：2kg  (not including classis)

2、NDJ-8S

    Measurement range：10mPa.S-2,000,000mPa.S(1mPa.S=1cp)

    Measurement error：±3%

    Rotor types：1#, 2#, 3# and 4# rotors(0# is optional accessory)

    Rotor velocity：0.3、 0.6、1.5、3、6、12、30、60RPM/min

    Dimensions：95*130*155 (not including classis)

    Net weight：2kg(not including classis)

3、NDJ-9S

    Measurement range：10mPa.S-6,000,000mPa.S(1mPa.S=1cp)

    Measurement error：±3%

    Rotor types：1#, 2#, 3# and 4# rotors(0# is optional accessory)

    Measured Value will become larger as the rotor number grows

    Rotor velocity：0.1、0.3、0.6、1.5、3、6、12、30、60RPM/min

    Dimensions：95*130*155(not including classis)

    Net weight：2kg(not including classis)

3:Application Environment:

Environment temperature： 5℃ - 35℃

    Relative humidity：≤80%

    Power supply： 220V，50Hz；110V，60Hz

    There is no electro magnetic interference, severe virbation, corrosive gas around the instrument.

4:Structure and Installation

 （1） Structure

            As follows:

（1）level babble  （2）screen  （3）cover  （4）rotor protection frame

（5）the host base （6）operation key （7）rotor connector  

（8）rotor（9）the host base horizontal knob

（2） Installation

1. You need to take classis, stanchion, lifting block and hand shank from the packing box. Screwing stanchions into the hole on the base. (The rack side must face to you), tiding the hand shank of viscomeler to the lifting block.

2. Adjust the tightness of up and down by swirling the up-down button, then put“T”block behind instrument into hand shank and screw them.

3. Adjust three level screws of the base to make the level bubble in the center of  black circle.

4. Take off universal-joint protective cap under the main case.

5. Connect power

5:Operation

1. Prepare the liquid to be measured and put it into a round fat container or flat container with the diameter not smaller than 60mm, you need to control temperature of measured liquid correctly (It will influence viscometer directly)

2. Please reverse screw protection bracket beneath the main case.

3. Please choose the right rotor and contrarotate in the universal joint ofthe instrument

4. Adjust the lifting screw and put the rotor into the measured liquid till the level mark on the rotor reach the liquid surface.

5. Adjust the instrument in level again.

6. During the testing, the environment temperature must be stable to make sure the show value is accurate.

6：Panel operation

This instrument has eight keys: choosing rotor, setting rotor speed,↑,↓,

stat, stop,search, confirm. Turn on the power switch, enter standby state.

7：Precaution

1. Because Tem is viscosity's function, so the Tem measurement error should  be  controlled in ±0.1℃  when  the  instrument works in the normal temperaure.

2. Please look out the aperture angle percentage, its value should be kept 20%-85% . When the valuce  is  too  high  or  too  low,  please change rotor or velocity. Otherwise, it will affect measurement accuracy.

3. The instrument should be used in the required range of voltage  and frequency, Othervise, it will afect measurement accuracy.

4. You should operate carefully when you put on or take off rotor.  You just need to pull up the universal joints a little bit, forbidding  pushing too  hard.

5. Afer using, universal joints and rotor should be kept clean.

6. You need to drop the instrument slowly. You'd better hold it to  avoid damage the  axis because of vibration.

7. Universal joints should be put on protctive nap when the  instrument is moved or  transported.

8. Turbid liquid, emulsion, high polymer material and some high viscosity liquid, which all  belong non-Newtonian liquid. Their apparent viscosity and velocity are not linear relationship. So,  when  you  use  different rotors, velocity, and measurement time, their viscosity measurement may be different, not the mistake of instrument testing.

9. You will get accurate result when you do as fllowing:

    A. Control the tested liquid temperature accurately.

    B. Kcep environment temperature balance.

    C. Rotor and the tested liquid must have the same temperature.

    D. The bigger rotor, higher speed usually is used for low viscometer

     liquid, and high viscometer usually uscs smaller, lower speed.

    E. Keep the surface of rotor clean.

Attach: the installation step of  0#

1): The using of 0# must be followed as instument operations. You will    know the specification by picture.

2): Pouring 25-30mL tested liquid into sleeve which has bottom.

3): Put on the out sleeve from the bottom up and fix it. (Sleeve P9  has V-groove)

4): The same way to use sleeve. When the  out  sleeve  and  rotor  are immersed in liquid, taking the out sleeve  having  V-groove  inside as the liquid line of  0#.

Packing  list

No.           Name                               Number

1      NDJ series Digital Rotary Viscometer                 1

2      Stanchion and lifting block                          1

3     Protection bracket                               1

4      Rotors, 1#, 2#, 3# and 4#                          1

5     Power line                                      1

6      Operation manual                                1

7     Quality certificate                                1

8      Guarantee card                                  1

8：Attach

Installation step:

Screw 0# rotor (5); fixed tap of sleeve (2); Screw in screw (1) and fix it;

Put on size zero sleeve (4); Screw in screw (1) and fix it.