Furfural moisture analyzer

NegotiableUpdate on 02/03

Model

Nature of the Manufacturer: Producers

Product Category

Place of Origin

Online Consult

Overview

The instrument adopts the Karl Fischer method to determine the relevant standards for moisture in the sample. The instrument adopts excellent automatic control circuit, electrolytic current automatic tracking control, and novel external structure, which makes the instrument more reliable and convenient to use. It has the characteristics of fast analysis speed (results in one minute), easy operation, high accuracy, and strong automation, and is widely used in departments such as petroleum, chemical, power, railway, and environmental protection.

Product Details

Overview:
　　The instrument complies with GB/T7600; SH/T0246； GB/T606 and relevant standards for determining moisture in samples using Karl Fischer method. The instrument adopts excellent automatic control circuit, electrolytic current automatic tracking control, and novel external structure, which makes the instrument more reliable and convenient to use. It has the characteristics of fast analysis speed (results in one minute), easy operation, high accuracy, and strong automation, and is widely used in departments such as petroleum, chemical, power, railway, and environmental protection. Coulombic method, also known as electric quantity method, is an analytical method used to determine the moisture content in substances. This method is based on the principle of electrolysis, and calculates the moisture content by measuring the total amount of electricity required during the electrolysis process.

Basic principle:

Electrolytic reaction: In Coulomb method, the determination of moisture is based on the reaction of water (H ₂ O) being decomposed into hydrogen gas (H ₂) and oxygen gas (O ₂) during the electrolysis process. The reaction equation is: 2H ₂ O → 2H ₂+O ₂

The relationship between electricity and moisture: The decomposition of each mole of water molecule requires a certain amount of electricity, which is constant. According to Faraday's law of electrolysis, the charge of one mole of electron is Faraday's constant (approximately 96485 coulombs). Therefore, by measuring the total amount of electricity passing through the electrolytic cell during the electrolysis process, the number of moles of decomposed water can be calculated.

Calculate moisture content: Once the total amount of electricity passed through the electrolysis process is known, the number of moles of moisture can be calculated based on Faraday's constant and the stoichiometric relationship of the electrolysis reaction. Calculate the moisture content in the sample by the number of moles and the molar mass of moisture (18 grams/mole).

Measurement steps:

Sample preparation: Mix the sample to be tested with an electrolyte, usually using a mixed solution of anhydrous iodine and sulfur dioxide as the electrolyte.

Electrolysis: In an electrolytic cell, a constant voltage is applied to cause water to undergo an electrolytic reaction on the electrodes. The anode produces oxygen and the cathode produces hydrogen.

Electricity measurement: During the electrolysis process, the amount of electricity passing through the electrolytic cell is accurately measured. The measurement of electricity is usually done through an ammeter, which records the total current from the beginning to the end of electrolysis.

Technical Specifications:

Measurement method	Karl Fischer Coulomb method
Display	4-digit LED digital display
Read out the unit	μgH₂O
Electrolytic current	0-300mA automatic control
Measurement range	5μg-100mg（H₂O）
Sensitivity threshold	1μgH₂O
Accuracy	(Excluding injection error) 5 μ g-1mgH₂O is not greater than ± 0.3%; Above 1mg H₂O is not greater than ± 0.5%
Power supply	AC220V±10% ； 50Hz±5%
power consumption	Not exceeding 40W
Environmental temperature for use	5～40℃
Environmental humidity for use	≤85%
host weight	4.4kg
Overall dimensions	320mm×270mm×90mm