Coulomb method micro moisture analyzer

The Coulomb method micro moisture analyzer has an intuitive display, easy operation, and simple entry.

During the testing process, it is easy to control the time and temperature, and it is also possible to connect to computers and printers to save the final data.

1、 Product advantages

Easy to operate, accurate to test, the display part adopts a red digital tube, with clear and visible readings, which can display moisture value, sample initial value, final value, measurement time, temperature initial value, final value and other data. It also has the function of connecting with computers and printers.

Adopting microcomputer control, it has simple operation, fast analysis speed, high accuracy, direct digital display of measurement results, automatic calculation of percentage content, ppm content and automatic printing functions, as well as instrument fault self diagnosis, information display and other functions to achieve better operation and use. It is an efficient and fully automatic analytical instrument.

It is a new type of rapid moisture detection instrument. The moisture analyzer measures the weight of the sample while the infrared heating unit and moisture evaporation channel quickly dry the sample. During the drying process, the moisture analyzer continuously measures and displays the% lost moisture content of the sample in real time. After the drying program is completed, the measured moisture content value is locked and displayed. Compared with the oven heating method, infrared heating can achieve high heating power in a short period of time, and the sample can be quickly dried at high temperatures. Its detection results have good consistency with the national standard oven method, are replaceable, and the detection efficiency is much higher than that of the oven method. Generally, the sample can be measured in just a few minutes.

Moisture meter measurement accuracy ± 5% Dew point conversion display has a range of 200 levels: 0-200 × 10 (volume fraction) 2000 levels: 0-2000 × 10 (volume fraction) Note: 1000-2000 range is generally not used for measurement Dew point conversion range: wider than -80 ℃~-20 ℃ Working conditions AC power supply 220V ± 10%, 50Hz Environmental temperature 10 ℃ -40 ℃ Instrument intake pressure rated intake pressure 0.02-0.12Mpa External dimensions 250 × 245 × 260mm Instrument weight about 6Kg

To ensure the quality of the product, all key components are imported. The online microwave moisture analyzer can be composed of a main unit and 1 to 6 probes according to customer requirements. Online microwave moisture analyzer operation: The probe is made of high-strength stainless steel with a power of 20mW; A locking waterproof connector with a 3-meter connecting cable is used between the host and the probe. All components are waterproof and dustproof, and the sturdy stainless steel shell can resist accidental impacts. The whole machine can work in harsh environments. The online microwave moisture tester can detect the moisture content of almost all solids.

2、 Precautions for use

Precautions for electrolyte

During normal measurement, every 100 milliliters of electrolyte can react with no less than 1 gram of water. If the measurement time is too long and the sensitivity of the electrolyte decreases, a new electrolyte should be replaced.

If strong bubbles are released or the electrolyte is contaminated during titration, resulting in a light reddish brown color, the blank current will increase, the reproducibility of the measurement will decrease, and the time to reach the endpoint will be prolonged. In this case, the electrolyte should be replaced.

3. If the titration time exceeds half an hour and the instrument cannot be stabilized, the stirring knob should be rotated to stop stirring and observe the sand

Is there obvious brown iodine production on the anode platinum mesh at the bottom of the core? If there is no or very little iodine production, the electrolyte should be replaced.

4. Be careful not to inhale or touch the electrolyte with your hands. If it comes into contact with the skin, rinse thoroughly with water.

Due to the presence of toxic components in this reagent, good ventilation is required in the laboratory

The trace moisture analyzer can monitor drift based on changes in climate in the environment, and can set whether it needs to be deducted in the method as needed; Measurement information that complies with GLP standards and can store up to 20 measurement results; Can connect to a printer and print stored measurement information. Automated solvent and waste liquid suction and discharge functions make operation simpler; Multiple personalized features, including date, operator number, burette type, endpoint current, etc One click cleaning, the instrument has one click cleaning functions such as power on cleaning and power off cleaning, which can be easily used without complicated operations; A large capacity drying bottle can more effectively filter moisture in the air and reduce the impact of the environment on measurement results; Fully enclosed operating environment, without contact with reagents throughout the operation, can effectively protect the safety of operators; Running noise, almost no sound of mechanical structure operation can be heard throughout the titration process, keeping you away from noise troubles;

Before injection, it is necessary to ensure that the injector used is dry, with one injector for each sample.

The typical measurement range of the card type coulombic method is 10 μ g-10mg. In order to obtain accurate measurement results, the sample injection amount should be appropriately controlled according to the moisture content of the sample.

3. Before injection, it is necessary to wipe the needle part of the injection gas with filter paper from the end to the front to avoid the moisture attached to the needle from entering the reagent or adhering to the injection pad, which may cause inaccurate test results.

Measurement principle of Coulomb method moisture analyzer

The user sample is loaded into a sealed injection vial for a card type heating furnace, sealed with a headspace bottle connector, and placed into a heating tank. The moisture in the sample (which may also contain other volatile solvents) is released in the form of vapor. It is transferred from the headspace bottle to the KF titration cup through a heating companion tube using a dry carrier gas (such as dry air or nitrogen), and then detected and displayed using a Karl Fischer moisture analyzer.

advantage

1. The Coulomb Karl Fischer moisture analyzer can achieve high accuracy of 1ppm. 2. Measure the evaporated water vapor to avoid contamination caused by direct injection into the electrolytic cell of the moisture analyzer host. 3. A fully enclosed system avoids interference from even trace amounts of moisture in the ambient air.

Product testing methods

After weighing the sample to be tested, it is placed in a sample bottle. The sample bottle is uniformly heated in a card type heating furnace, and the evaporated moisture is guided by high-purity inert gas as a carrier gas to enter the titration cell for moisture content analysis.

Performance characteristics of Coulomb method moisture analyzer

Card type headspace sample bottle heating technology effectively avoids contamination of the heating furnace and reaction cup. Reusable 10 ml and 20 ml sample bottles can be used by simply placing the weighed sample into the sample bottle.

Hegong's sample bottle connector allows the carrier gas to enter the interior of the sample bottle without piercing the sample bottle spacer, with good sealing and easy disassembly; The effective volatile components can be introduced into the titration cell, which is more effective than similar imported products!

Accurate flow control design, with carrier gas consumption only one tenth of similar imported products, saving carrier gas consumption while ensuring that even the smallest amount of samples will not be carried into the pipeline system by the carrier gas;

High power heat dissipation groove design, quickly cooling sample bottles and improving work efficiency;