1 Introduction
Haitongda Model HTD13285 viscometers adopts the embedded structure design, the built-in high precision angle sensor, the
stepper motor drive, the speed is more stable and accurate; The buttons on the panel are clearly marked and easy to operate. The
high-resolution LCD screen can display the rotating Angle of the inner cylinder and the stirring speed in real time. Haitongda
Model HTD13285 viscometers which are available in twelve-speed design for use on 220 volts 50 Hz electrical power. Haitongda Model HTD13285 viscometers are used in research and production. These viscometers are recommended for evaluating the rheological properties of fluids, Newtonian and non-Newtonian. The design includes a R1 Rotor Sleeve, B1 Bob, F1 Torsion Spring, and a stainless steel sample cup for testing.
1.1 Background
Haitongda Model HTD13285 viscometers are rotational viscometers. In this viscometer, the test fluid is contained in the annular space (shear gap) between an outer cylinder and the bob (inner cylinder). Viscosity measurements are made when the outer cylinder, rotating at a known velocity, causes a viscous drag exerted by the fluid. This drag creates a torque on the bob, which is transmitted to a precision spring where its deflection is measured.
Viscosity measured by a viscometer, such as the Model HTD13285 , is a measure of the shear stress caused by a given shear rate. This relationship is a linear function for Newtonian fluids (i.e., a plot of shear stress vs. shear rate is a straight line).
The instrument is designed so that the viscosity in millipascal second of a Newtonian fluid is indicated on the dial with the standard rotor R1, bob B1, and torsion spring F1 operating at 300 rpm. Viscosities at other test speeds may be measured by using multipliers of the dial reading.
1.2 Document Conventions
The following icons are used as necessary to distinguish elements of text.
2 Safety
Safe laboratory practices and procedures should be observed while operating and maintaining the Model HTD13285
viscometer. The safe operation of the Haitongda Model HTD13285 viscometer requires that the laboratory technician be familiar
with the proper operating procedures and potential hazards associated with the instrument. The operator should be properly trained before operating this equipment. The safe operation of this equipment may be impaired if it is used in a manner not specified by the manufacturer.
3 Features and Specifications
The Haitongda direct-indicating viscometers are equipped with the standard R1 rotor sleeve, B1 bob, F1 torsion spring, and a stainless steel sample cup. Other torsion springs can be substituted to extend the torque measuring range or increase the sensitivity of the torque measurement. The viscometer is six-speed model. See Table 3-1, Table 3-2 for specifications. The photo in Figure
3-1 shows the viscometer and the detailed drawing in Figure 3-2 identifies the individual parts.
Model HTD13285 Viscometer Specifications
|
Model NO.
|
Electrical
|
Torsion spring & Viscosity measurement range
|
Speeds
|
|
HTD 13285
|
AC(220± 11)V50Hz
120W
|
F1:Newtonian Fluid:0.5~100000mPas
Non-Newtonian
Fluid:
0~150mPa.s
Shear Stress:0~153.3Pa
|
0.9,1.8,3, 6,30,60, 90,100,180, 200,300,600
(r/min)
|
Model HTD13285 Viscometer Specifications
| Model NO. |
Working Environmental Temperature
|
Dimensions
|
Weight
|
| HTD 13285 |
5ºF~113ºF (-15ºC~45ºC)
|
310*200*470 (mm)
|
7.2kg
|
4 Installation
The Model HTD13285 should be placed in a position where there is easy access to the power cord plug for disconnection. Consideration should be given to the location where samples are prepared and equipment is cleaned when the test is completed. There should be sufficient storage area nearby for commonly used tools, as well as consumables.
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