Rotational digital rotary viscometer multifunction liquid viscosity tester NDJ5S

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Rotational digital rotary viscometer multifunction liquid viscosity tester NDJ5S
Product Description
Rotational digital rotary viscometer multifunctional liquid viscosity tester NDJ-5S
The digital rotational viscometer is a new type of digital instrument developed based on the technology of a single-chip microprocessor for measuring the viscous resistance of liquids and the absolute viscosity of liquids. Compared with similar instruments, it has the advantages of high measurement accuracy, stable viscosity value display, easy to read, simple operation, and good anti-interference performance. It is widely used to determine the viscosity of various fluids such as grease, paint, food, medicine, adhesives and cosmetics. .
According to the Ministry of Standard JB/T 9357 Laboratory Rotational Viscometer General Technical Conditions Implementation and processing production.
Contact us for 8S whose price may be higher a little bit.
Model
NDJ-5S
NDJ-8S
mPa·s
10 ~100000
10 ~2000000
Rotor
1－4# Rotor Optional #0 rotor can test to 0.1mPa.s
Speed of rotor Rpm
6、12、30、60
0.3、0.6、1.5、3、6、12、30、60
Auto
Can automatically select the appropriate rotor number and speed
Language
Chinese、English
Stable reading cursor
The reading is basically stable when the vertical bar and square cursor is full
Accuracy
±2%（Newtonian Liquid）
Temperature Accuracy
0.1℃
Power
220V±10% 50Hz±10%
Working Environment
Temperature5℃~35℃，Relative humidity <80%
Size
370×325×280mm
Net weight
6.8㎏
working principle
1. The program-controlled motor drives the shaft to rotate stably according to the speed given by the program, and then drives the standard rotor to rotate through the torque sensor. When the rotor rotates in a certain liquid, due to the viscosity of the liquid, the rotor is subjected to a torsion force proportional to the viscosity. By measuring the magnitude of this torque force by a torque sensor, the viscosity of the liquid can be obtained. In order to expand the measurement range, it is equipped with four standard rotors and four speed gears.
2. To measure a wide viscosity range of 10mPa·s~100000mPa·s, different combinations of rotors and speeds must be used. The speed of this instrument is divided into four gears, and the rotor is also divided into four different specifications. By combining them in various combinations, any viscosity value within the measurement range can be measured. There are 5 key combinations up, down, left, right, and enter in the middle of the panel. When power on, the instrument displays the rotor and speed value of the last operation, which can be viewed and selected by the up and down keys. To measure a certain range of viscosity, you need a certain specification of rotor and a certain speed, which can be selected and set by the up and down keys and the left and right keys. You can first estimate the approximate viscosity of the liquid to be tested, and select the appropriate rotor and speed. After installing and setting the rotor and speed, press the Enter key to start the measurement. There is a data memory inside the instrument to store the range of the instrument, the default rotor, speed, various coefficients and test data. The microcontroller controls the speed of the motor according to the user's choice. In addition, the instrument is also equipped with RS232 communication port, which can carry out two-way data communication with the computer.
3. The rotor protection frame of the instrument is used for stable measurement and protection of the rotor. Using the rotor protection frame for measurement can obtain more stable test results.
installation
1. Take out the brackets and pillars from the carton, screw the nylon pads on the pillars into the screw holes at the back of the bracket, and tighten the pillars with a wrench to prevent the pillars from rotating and the toothed surface on the pillars faces the front of the bracket.
2. Take out the viscometer from the instrument box, install the lifting device of the viscometer on the pillar, adjust the tightening screw, not too loose or too tight, rotate the lifting knob to make it up and down, it is better to be tight. To prevent the viscometer from automatically falling.
3. Loosen the protective cap screw at the bottom of the product and remove the yellow protective cap.
4. Observe the horizontal bubble and adjust the level adjustment screw at the bottom of the bracket to make the bubble in the middle of the horizontal bubble, indicating that the product is close to level. Connect the power cord.
Precautions
1. This instrument is suitable for use at room temperature. The temperature of the sample to be tested should be within ±0.1℃, otherwise it will seriously affect the accuracy of the measurement.
2. The instrument must be used within the specified voltage, frequency and allowable error range, otherwise it will affect the measurement accuracy.
3. Care should be taken when loading and unloading the rotor. The connecting screw should be slightly lifted. Do not use excessive force. Do not apply lateral force to the rotor to avoid bending of the rotor.
4. Do not put the instrument on its side or down after installing the rotor.
5. The connecting end surface and thread of the connecting screw and rotor should be kept clean, otherwise it will affect the correct connection of the rotor and the stability of rotation.
5. When the instrument is raised and lowered, hold it by hand to prevent the instrument from falling under its own weight. After each use, the rotor should be cleaned in time (the rotor should not be cleaned on the instrument). After cleaning, place it in the rotor box properly.
6. After installing the rotor, do not "rotate" without liquid, so as not to damage the shaft tip.
7. Do not disassemble or adjust the instrument parts at will, and do not add lubricating oil by yourself.
8. When the instrument is moved and transported, put on the yellow protective cap, hold up the connecting screw, and tighten the screw on the cap.
Remarks: Many of the suspensions, emulsions, polymers and other high viscosity liquids are "non-Newtonian liquids". The apparent viscosity changes with the change of shear speed and time, so in different rotors, The inconsistency of the results measured under the speed and time is a normal situation, not the inaccuracy of the instrument (generally, the measurement of non-Newtonian liquid should specify the rotor, speed and time).
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Return policy
Contact us & Warranty
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Shipping
1. Item processing time. We will ship the products within 1-5 working days upon the confirmation of your cleared payment, when buyers have some special request (e.g.Voltage, color...etc.), we may delay to ship the orders and will inform buyers about it. Do please check your message box in 1-2 days after payment is cleared. Otherwise
order may be cancelled due to insufficient of your information.
2.Shipping methods. Items are shipped out via SpeedPAK or E-packet or any other shipping method that can fit your country, we will choose the reasonable
way for you.
3. Delivery time may vary with countries and international shipping for some countries may be much slower than expected. Also your local custom may delay the shipping a lot due to the custom duty they want to charged from you for importing this item from other countries.
Note: Any Import or export duties and the cost of dispatching for remote areas, will be borne by the buyer, because it is difficult to know all country's custom duty or remote area before shipping the item.
4. Please Note
buyers from some of the countries may need to contact us
before making payment.You may be requested to pay extra shipping cost charged by shipping company otherwise order may be cancelled automatically due to insufficient payment for shipping. We need to revise your invoice before your payment please...
Return policy
(1) Taking photos and sending it via eBay Message Box.
Missing item or get wrong item or damaged items, or the item seams can not work well, please keep all the items in original condition, make all the items together with packing, then take some photos of them and send us the photos by message box.
(2) How we will react? We will investigate the case and may send you the missing item or replacement or refund upon the situation of the case. (sometimes you may be requested to return the incorrect item).Or if it is not seller's error, buyer may need to cover the returning cost.
(3) Valid time for returning. Please contact us within 7 days upon receiving the package.All items must be returned within 30 days of purchasing the item.
Contact us & Warranty
Warranty: 3-24 months warranty is provided to our products. The length of the warranty depends on the nature of the products. Please contact us if you are wondering about how the warranty works for your item.
Contact: Do please contact us before leaving any negative feedback or Opening any kind of case. We promise to achieve your 100% satisfaction. But negative feedback actually can not solve any problem. Thank you so much for your kindness and understanding.
Working time
Beijing time :AM 8:00 -PM 8: 00