Karl Fischer Coulometric Trace Moisture Analyzer

MT-MC806

Karl Fischer Coulometric Titration Method for water content analysis in liquid, solid, and gaseous samples, covering a range from 0.0001% (1 ppm) to 100%.

Get a quote

Introduction

Our Karl Fischer Coulometric Trace Moisture Analyzer adopts the classic moisture measurement method, the Karl Fischer Coulometric Titration, and can quickly analyze moisture content in liquid, solid, and gas samples within a range of 0.0001% (1ppm) to 100% in just one minute. It can automatically calculate the percentage, ppm mg/L values of moisture content, as well as automatically replace reagents, requiring no manual operation.

Test Principle

Our trace moisture analyzers operate on the Karl Fischer coulometric/volumetric titration method, where iodine reacts quantitatively with water in the presence of sulfur dioxide and a suitable solvent. The amount of iodine consumed is directly proportional to the water content of the sample, enabling accurate moisture determination.

Typical Applications

Insulating oil and transformer oil
Lubricating oils and hydraulic oils
Fuels (diesel, gasoline, kerosene)
Crude oil and petroleum products
Chemical solvents and reagents
Pharmaceuticals and raw materials

Key Features

1. Intelligent Microprocessor Control

This trace moisture analyzer is controlled by an STM microprocessor for precise and automated moisture determination.

2. Large Color Touchscreen Interface

65K color touchscreen (800×600 resolution) displays real-time status and results with intuitive operation.

3. Fully Automated Reagent Handling

Automatic reagent injection and waste disposal prevent operator contact with chemicals.

4. Corrosion-Resistant, Easy-to-Clean Surface

The exterior surface is treated with electrostatic spraying for corrosion resistance and easy cleaning.

5. Automatic Blank Current Compensation

The blank current is automatically compensated by the microprocessor, allowing the reagent to quickly reach a balanced state.

6. High Sensitivity and Fast Analysis

A 430 mA large electrolysis current ensures high detection sensitivity and fast analysis speed.

7. Automatic Data Storage

Measurement results are automatically stored (up to 500 records), and historical data can be accessed at any time.

8. Comprehensive Report Generation

Automatically calculates and prints results, including ug, ppm, percentage content, mg/L, sample name, experiment date, and more.

9. USB/RS232 Connectivity

Supports USB or RS232 interfaces for communication with laptops or computers, enabling network management.

10. Multi-language Display and Upgradeable Program

Multiple language options for operation display, and the instrument’s program can be upgraded when national standards are revised.

Technical Specifications

Name	MT-WC806 Karl Fischer Coulometric Trace Moisture Analyzer
Display	65K 10-inch English color touchscreen (Resolution: 800×600 pixels)
Measurement Method	Microprocessor-controlled Karl Fischer volumetric titration
Electrolysis Speed	2.4 mg of water per minute
Electrolysis Current	0-430 mA, automatic control
Measurement Range	0.01 µg water to 200 mg water
Moisture Content Range	0.0001% (10 ppm) – 100%
Sensitivity	0.01 µg of water
System Accuracy	For water content between 10 µg and 1000 µg, the error is ≤ ±3 µg; for water content above 1000 µg, the error is ≤ ±0.2% (excluding sample injection error)
Drift Compensation	Automatic drift compensation controlled by microprocessor
Stirring Speed	Adjustable stirring speed control
Endpoint Indication	Screen display / Print output / Sound alarm / End-point light indication
Data Input	Touchscreen input operation
Sample Number	User-defined
Storage Function	500 records
Printer	Low-power, high-speed thermal printer, 56 mm paper width
Print Content	µg / Percentage content / ppm / mg/L / Sample number / Operator / Date
Calendar/Clock	Analysis time and date display, with printed output
Self-Diagnosis Function	Automatic instrument fault detection and diagnosis
Special Function	Can be connected to a laptop or other computers for online operation, or can function independently
Power Consumption	Less than 40 W
Dimensions (W × D × H)	390 × 300 × 170mm
Operating Conditions	Temperature: 5°C – 40°C, Humidity: < 85% RH
Power Supply	AC 220 V ±10%, 50 Hz ±2.5 Hz
Weight	7.3 kg

Applicable Standards / Compliance Standards

Karl Fischer Coulometric Method for Water Content Determination

1. General Chemical Products

GB/T 6283-2008 – Determination of Water Content in Chemical Products — Karl Fischer Method
ASTM E1064-2008 – Standard Test Method for Water Content of Organic Liquids by Coulometric Karl Fischer Titration

2. Petroleum, Crude Oil & Lubricant

ASTM D4928-00 (2010) – Standard Test Method for Water Content of Crude Oils by Coulometric Karl Fischer Titration
ASTM D6304-2007 – Standard Test Method for Determination of Water in Petroleum Products, Lubricating Oils, and Additives by Coulometric Karl Fischer Titration
ISO 10337:1997 – Crude Petroleum — Determination of Water — Coulometric Karl Fischer Titration Method
GB/T 11146-2009 – Crude Oil — Determination of Water Content — Karl Fischer Coulometric Method
SH/T 0246-1992 – Test Method for Water Content in Light Petroleum Products (Coulometric Method)
SH/T 0255-1992 – Test Method for Water Content in Additives and Lubricating Oils Containing Additives (Coulometric Method)

3. Transformer Oil & Electrical Insulating Oils

GB/T 7600-1987 – Determination of Water Content in In-service Transformer Oil — Coulometric Method

4. Industrial Gases & Petrochemical Products

GB/T 3727-2003 – Determination of Trace Water in Industrial Ethylene and Propylene
GB/T 6023-2008 – Determination of Trace Water in Industrial Butadiene — Karl Fischer Coulometric Method
GB/T 7376-2008 – Determination of Trace Water in Industrial Fluorinated Alkanes — Karl Fischer Method
GB/T 18619.1-2002 – Natural Gas — Determination of Water Content — Karl Fischer Coulometric Method
GB/T 18826-2002 – Industrial 1,1,1,2-Tetrafluoroethane (HFC-134a)

5. Coking & Coal Chemical Products

GB/T 5074-1985 – Micro-coulometric Determination of Water Content in Coking Products

Why Choose Our Trace Moisture Analyzer

1. Proven Karl Fischer Technology

Based on the Karl Fischer coulometric titration method, ensuring accurate and reliable trace moisture determination.

2. Designed for Trace-Level Analysis

Measures water content from 1 ppm (0.0001%) to 100%, ideal for insulating oil and petroleum products.

3. Fast and Fully Automated Operation

Typical analysis completed within one minute with automatic reagent handling and result calculation.

4. User-Friendly Touchscreen Interface

65K color touchscreen (800 × 600 resolution) for clear display and easy operation.

5. Safe and Durable Design

Automatic reagent replacement reduces operator exposure; corrosion-resistant housing ensures long service life.

6. Data Storage and Connectivity

Stores up to 500 results and supports USB and RS232 communication.

FAQ – Trace Moisture Analyzer

Q1: What is the difference between this trace moisture analyzer and a general moisture analyzer?

A: This instrument is a fully automatic Karl Fischer coulometric trace moisture analyzer, specifically designed for ppm-level moisture determination. Compared with general moisture testers, it offers higher accuracy, better repeatability, and greater reliability for insulating oil and other low-moisture applications.

Q2: Can this trace moisture analyzer be used for gas and solid samples?

A: Yes. With proper sample introduction methods or suitable accessories, the analyzer supports trace moisture determination in both gas and solid samples, in addition to liquids.

Q3: How often is calibration required?

A: Routine calibration is straightforward and helps ensure long-term accuracy. The recommended frequency depends on the sample type, testing volume, and application requirements, especially for critical trace moisture analysis.

Q4. Is this analyzer suitable for continuous laboratory and industrial use?

A: Yes. The combination of fully automated operation, fast analysis time, and stable Karl Fischer coulometric technology makes it suitable for routine laboratory testing, industrial quality control, and long-term insulating oil monitoring.