HT-CCKF Automatic Coulometric Karl Fischer Trace Moisture Analyzer, for Water Content Testing
Overview:
This fully automatic trace moisture analyzer is designed for the precise determination of trace moisture in liquid, solid, and gaseous samples. It complies with standards such as GB/T 7600-1987 (Coulometric method for determining water content in transformer oil in service), SH/T 0255-1992 (Coulometric method for determining water content in additives and additive-containing lubricating oils), and SH/T 0246-1992 (Coulometric method for determining water content in light petroleum products). It serves industries including electric power, petroleum, chemicals, and food processing. The instrument enables rapid moisture content determination for a wide range of products—such as alcohols, oils, fats, ethers, esters, acids, alkanes, benzenes, amines, organic solvents, pesticides, phenols, and pharmaceutical raw materials—across the chemical, petroleum, pharmaceutical, and agrochemical sectors.
Principle:
Iodine is generated at the anode via electrolysis, and the amount produced is directly proportional to the quantity of electricity passed, in accordance with Faraday's law. The number of moles of iodine participating in the reaction equals the number of moles of water present. When the sample is injected into the electrolyte, the water within it reacts; the instrument monitors the consumption of iodine during this process and calculates the water content based on the electrical charge required to generate an equivalent amount of iodine, displaying the result directly on the LCD screen.
Features:
1.Features a high-resolution 480×272 color dot-matrix touchscreen LCD with an all-English user interface
2.Utilizes a switching constant-current source for the electrolysis circuit, reducing instrument power consumption
3.Employs high-precision signal generation and detection circuitry for the measuring electrode, ensuring rapid and accurate determination of the electrolysis endpoint and robust anti-interference capability
4.Corrects measurement results using both reagent blank current compensation and equilibrium point drift compensation
5.Includes 9 built-in calculation formulas to accommodate moisture content calculations under various measurement conditions
6.Allows for the simultaneous or independent conversion of results into mg/L, ppm, mg/kg, and %, thereby reducing the number of tests and reagent consumption
7.Permits adjustments to sample volume, mass, or density either during or after the test
8.Offers 9 levels of stirring speed adjustment and 9 levels of electrolysis gain adjustment
9.Automatically detects and logs open-circuit and short-circuit faults in the measuring electrode
10.Automatically stores timestamped historical records
11.Supports switching between Chinese and English user interfaces
Parameters:
Measurement range: 3 μg – 100 mg
Instrument accuracy: ±3 μg for 3 μg – 1 mg; 0.3% for >1 mg (excluding injection error)
Resolution: 0.1 μg
Electrolysis current: 0 – 400 mA
Maximum electrolysis rate: 2.4 mg/min
Communication ports: RS485, RS232
Communication protocol: ModBus RTU
Power consumption: 30 W
Power supply: AC 220 V ±10%, 50 Hz ±10%
Ambient temperature: 20 – 30°C
Ambient humidity: <70% RH (non-condensing)
Dimensions: 320 mm × 240 mm × 200 mm
Weight: 4.7 kg
This trace moisture Karl Fischer sample injector—compliant with standard SN/T 2998-2011 ("Determination of water content in petroleum and petroleum products—Karl Fischer oven method")—accurately measures trace moisture in liquid, solid, and gaseous samples. It is designed for use in industries such as electric power, petroleum, chemicals, and food processing. It enables rapid moisture determination for a wide range of products—including alcohols, oils, fats, ethers, esters, acids, alkanes, benzenes, amines, organic solvents, pesticides, phenols, and pharmaceutical raw materials—across the chemical, petroleum, pharmaceutical, and agrochemical sectors.
Principle:
The sample is weighed directly into a vial, sealed, and placed into the Karl Fischer oven sample chamber. A dried and filtered carrier gas transports the moisture from the sample into the titration cell, where the moisture reacts with the reagent. Iodine is generated at the anode via electrolysis; in accordance with Faraday's law, the amount of iodine produced is directly proportional to the quantity of electric charge passed. The molar amount of iodine participating in the reaction is equivalent to the molar amount of water. Upon introducing the sample into the electrolyte, the moisture within it enters the reaction; the instrument monitors iodine consumption during the process. Based on the electrical charge required to generate an equivalent amount of iodine, the instrument calculates and directly displays the measured moisture content on the LCD screen.
Function Features:
1.PID temperature control ensures high-precision temperature regulation.
2.Integrated control system for temperature regulation, cooling, and the air pump offers convenience and safety.
3.Carrier gas and sample moisture are routed into the electrolytic cell via a heated line to prevent ambient temperature from affecting the sample moisture.
4.High-precision flow meter ensures stable and accurate gas flow.
Technical Parameters:
Temperature control range: (40.0–280)°C
Temperature control precision: ≤±0.2°C
Resolution: 0.1
Heat tracing method: Constant-temperature heat tracing tape
Carrier gas: Air/Nitrogen
Gas flow rate range: (10–100) mL/min
Heating port: 1
Operation mode: Manual needle insertion and retraction
Pressure sampling vial specification: 20 mL
Power supply voltage: AC 220V ±10%, 50Hz ±10%
Ambient temperature: (20–30)°C
Ambient humidity: <60% RH (non-condensing)
Company Information:
