Megger KF-LAB MkII KARL FISCHER Moisture in Oil Test Set

The Megger KF-LAB MkII KARL FISCHER Moisture in Oil Test Set is a portable, high-precision instrument engineered for professionals who need to determine moisture content quickly, reliably and on-site. Designed around more than two decades of expertise in KARL FISCHER titrimetry, the KF-LAB MkII provides laboratory-grade results in the field, ensuring engineers, technicians and laboratories have the data they need to protect critical assets such as transformers, switchgear and insulating systems.

Unlike conventional moisture testing methods, the Megger KF-LAB MkII combines portability, flexibility and advanced control to deliver highly accurate results across a wide range of sample types. It is particularly valued in the power, petrochemical and transformer maintenance industries, where moisture contamination can cause degradation, reduced efficiency and costly equipment failures.

Why Choose the Megger KF-LAB MkII?

Moisture in insulating oil is a leading cause of transformer breakdowns and reduced dielectric strength. Routine monitoring helps to extend the life of expensive assets. The Megger KF-LAB MkII offers the recognised industry standard of KARL FISCHER coulometric titration (compliant with ASTM D1533, BS EN 60814 and IEC60814), ensuring every result is traceable, precise and dependable.

Its portable design, complete with integral printer, rechargeable battery and rugged carry case, means accurate analysis can be performed immediately after sampling. This avoids the deterioration of results that can occur during transportation of oil samples to off-site laboratories.

For professionals needing versatility, the KF-LAB MkII stands apart. It supports a wide range of sample specific gravities between 0.6 and 1.4, and it comes with a pre-programmed default optimised for insulating oils with an SG of 0.875. That makes it perfectly suited to transformer oil analysis, while also capable of testing alternative insulating fluids, lubricants and other industrial materials.

Advanced ACE Control System

Traditional KARL FISCHER titration sets can suffer from drift and inaccuracies when the electrolysis cell resistance changes. This often demands repeated checks with known water content standards to verify calibration. The Megger KF-LAB MkII eliminates that burden.

Equipped with the patented ACE (Automatically Compensated Errors) Control System, the KF-LAB MkII ensures that the electrolysis current and displayed count rate remain in perfect synchronisation regardless of cell resistance. This innovation removes a significant source of error, reducing downtime, cutting consumable use and increasing confidence in every measurement.

Key Features of the Megger KF-LAB MkII

• Coulometric KARL FISCHER titrimetry – the recognised industry standard for moisture analysis.
• Wide analysis range – accommodates sample gravities from 0.6 to 1.4, including insulating oils with an SG of 0.875.
• Flexible calculation outputs – results can be displayed in ppm, mg/kg, %, or micrograms, based on either sample weight or volume and specific gravity.
• Integral high-speed printer – automatically logs results for compliance and reporting; may be disabled when not required.
• Portable and durable – lightweight design (approx. 3 kg), complete with rugged carry case, ensures suitability for both field and laboratory use.
• Power flexibility – runs from mains supply, internal rechargeable battery, or 12 V car adapter for remote site access.
• Enhanced accuracy – ACE Control System eliminates inaccuracies caused by cell resistance changes.
• Data capture and software integration – USB and RS232 connectivity with included results manager software makes reporting and record-keeping straightforward.
• Multi-language support – available in English, French, Spanish, Portuguese, German and Hungarian for international teams.

Typical Applications

The Megger KF-LAB MkII is widely adopted across industries where precise moisture measurement is essential:

• Power utilities and transformer maintenance – verify insulating oil quality, avoid moisture-induced breakdowns and extend transformer service life.
• Petrochemical plants – monitor lubricating oils, fuels and solvents for contamination.
• Manufacturing environments – quality control of raw materials, especially hygroscopic products.
• On-site commissioning – immediate analysis during installation or repair, avoiding the delays of laboratory testing.

By delivering reliable KARL FISCHER results on-site, the KF-LAB MkII helps operators take proactive maintenance decisions, reduce costly downtime and ensure compliance with international standards.

What comes with the KF-LAB?

Each Megger KF-LAB MkII package arrives ready to use, complete with:

• Titration vessel
• Detector electrode
• Generator electrode
• Drying tube
• Rugged carrying case
• Power pack and car adapter
• Injection septa (10 pack)
• 1 ml glass syringe
• Luer needle
• Bottle of molecular sieve
• Stirrer bar
• Funnel
• Thermal paper roll for the printer

Technical Highlights

• Measuring range: 1 µg – 10 mg water
• Moisture range: 1 ppm – 100%
• Maximum sensitivity: 0.1 µg
• Precision: ±3 µg (10–100 µg), ±5 µg (100 µg – 1 mg), ±0.5% (above 1 mg)
• Battery life: approx. 8 hours continuous operation
• Dimensions: 250 × 245 × 120 mm
• Weight: 3 kg (without carry case)

Consumables and Reagents

The Megger KF-LAB MkII uses standard coulometric KARL FISCHER reagents, widely available from suppliers worldwide. For best performance, Megger recommends Honeywell™ Fluka™ HYDRANAL™ reagents, including Coulomat A and Coulomat CG. These ensure optimal titration performance and long reagent life.

Related Products

For users whose primary requirement is transformer oil testing with an SG of 0.875, Megger also offers the KF875 Moisture in Oil Test Set, which simplifies operation to a one-button process with pre-programmed settings. However, for laboratories and operators needing broader flexibility across different sample types, the KF-LAB MkII remains the preferred choice.

Why Invest in the Megger KF-LAB MkII?

• Accuracy – backed by the trusted KARL FISCHER method and the unique ACE system.
• Versatility – suitable for multiple industries and materials.
• Compliance – results meet international standards for moisture determination.
• Portability – compact, lightweight and field-ready.
• Cost savings – prevents equipment failure and unplanned outages by enabling proactive maintenance decisions.

When it comes to safeguarding critical infrastructure, every drop of moisture matters. The Megger KF-LAB MkII KARL FISCHER Moisture in Oil Test Set ensures you detect it with confidence, wherever you are.

❓ Frequently Asked Questions (FAQ)

Q1. What industries use the Megger KF-LAB MkII?

A. It is widely used in power utilities, transformer maintenance, petrochemicals, and manufacturing where precise moisture testing is critical.

Q2. How portable is the KF-LAB MkII?

A. Weighing just 3 kg and supplied with a rugged carry case, internal battery, and car adapter, it is designed for field and laboratory use alike.

Q3. Does the KF-LAB MkII require calibration with water standards?

A. No, the patented ACE Control System ensures accuracy without frequent recalibration, unlike many other KARL FISCHER titrators.

Q4. What is the difference between the KF875 and the KF-LAB MkII?

A. The KF875 is optimised for insulating oils with a fixed SG of 0.875 and offers one-touch operation. The KF-LAB MkII provides broader flexibility for samples with SG between 0.6 and 1.4.