Digital Viscosity Meter's operating procedures:
1. When the sample is heated to 2°C-3°C higher than the test temperature, it is injected into the sample tube. The number of the sample is the mark on the rod when the liquid level reaches the vertical position of the plug stem.
2, the sample in the tank to maintain the test temperature of at least 30min, the temperature of the test sample is the test temperature ± 0.1 °C, adjust the sample surface to the ball stopper rod marked place, and then continue to heat 1min-3min.
3. Remove the evaporating dish under the orifice and place the receiving flask or graduated cylinder so that the center is convection. The receiving or measuring cylinder can be pre-injected with 25ml of soapy water or mineral oil to facilitate washing and accurate readings.
4. Lift up the ball stopper, hang it on the side of the sample tube by the mark, wait until the sample flows into the receiving flask or measuring cylinder up to 25mL, press the stopwatch, and when the sample flows out of 75mL, stop the stopwatch.
5. Record the elapsed time for the sample to flow out of 50mL. In S, it is the viscosity of the sample.
6. Report: The same sample should be tested at least twice in parallel. When the difference between the two measurements is not more than 4% of the average value, an integer value is taken as the test result.
7. Precision or Permissible Difference: The allowable difference of repeatability test is generally 4% of the average value.
Open flash point tester operating procedures:
1. Start the heating test and quickly increase the heating rate to 14°C/min-17°C/min. When the temperature of the sample reaches 56 °C before the expected flash point, the heater is adjusted to the heating rate so that the temperature increase rate can be controlled to 5.5 °C/min to 0.5 °C/min at 28 °C before the expected lightning.
2. When the temperature of the sample reaches the expected flash point of 28°C, press the ignitor button once every 2°C to make the flame test of the igniter sweep once along the center of the test cup with a radius of 150mm; from the test cup The time from one side to the other side is about 1s. At this time, it should be confirmed that the flame test of the igniter is a fireball with a diameter of 4mm±0.8mm, and is located 2.5mm above the test cup mouth.
3. When the first blue flame that appears immediately above the liquid surface of the sample appears, the temperature will be immediately read from the thermometer as the flash point of the sample. Be careful not to mistake the blue-white flame around the flame test for the lightning flame.
4. Continue heating and keep the sample warm.
5, 5 °C / min-0.5 °C / min, and in accordance with the above operation requirements ignition test with the igniter. When the sample is in contact with the flame, it will immediately catch fire and can continue to burn for not less than 5 seconds. Stop the heating and read the temperature above the thermometer as the ignition point of the sample.
6. The same sample should be tested at least twice in parallel. The difference between the two determination results is not more than 8°C, which is the allowable difference between the repeated tests. The average value is taken as the test result.
7. After the test is over, clean up and cut off the power supply.
Shanghai Ruifeng Instrument Manufacturing Co., Ltd. is a company specializing in manufacturing, manufacturing and sales of products. Main products: viscometer, coring machine, constant temperature water tank, impermeability tester, extraction instrument, sand equivalent, hydraulic ejector, extension Instruments, asphalt mixers, ovens, cryogenic water tanks, kinematic viscometers, road viscometers, and Cleveland flash point meters. The company is located in what is known as the international metropolis - Shanghai, Shanghai is China's economy, finance, trade and The shipping center, with China’s largest industrial base, is taking advantage of Shanghai’s geographical advantages, bringing together a large number of high-tech talents, strong technical force, superb manufacturing technology, and the spirit and advantages of continuous development and innovation. It is stepping forward step by step. A little bit of growth. At the same time, it has established close cooperative partnership with many universities and scientific research institutions such as Tongji University, Guangzhou University, Zhejiang University of Technology, and South China University of Technology, and has trained high-quality technical support and service professionals by relying on universities and scientific research institutions. , The establishment of professional and technical personnel, research and development of reliable, high-quality products and equipment with new domestic instruments and meters to ensure that the company can provide customers with high-quality, high-level professional services. The company has always been focused on product quality, product cost performance, customer requirements, and product innovation, practicality, and convenience. The excellent management concept is well-known throughout the industry. At the same time, good quality, low price, good service and enthusiastic working attitude have won the favor and trust of the new and old customers.
Heat Curing Oven is suitable for Pu paint curing, rubber paint curing.
1: This Oven is normal temperature oven: it is forbidden to bake inflammable and explosive/volatile and corrosive materials.
2:Items placed the oven should not be too crowded, so that the cold and hot air convection from blocking, to maintain uniform temperature
3:The oven cannot exceed the highest temperature when using, do not change the parameter in the thermostat
4:Top of the oven has air inlet/out of port, not plug, and the environment requires the best aspirant exhaust duct to outdoor.
5:Oven please don't install in damp places, please do not directly wash with water.
6:Oven in the high temperature operation, must wear good protective device, to prevent burns!
7:In time to cut off the power supply after baking, to ensure safety.
8 : Non-professional workers do not operate and repair the machine.
