Circuit Breaker Tester Megger KF875 and KF-LAB MkII

Megger KF875 Coulometric Karl Fischer Moisture-in-Oil Test Set

Brand: Megger

SKU: 5096

The Megger KF875 is a portable coulometric Karl Fischer test set that accurately measures moisture in insulating oil from a 1 ml sample, with one-touch operation and an integral printer.

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Description

Overview

The Megger KF875 is a coulometric Karl Fischer test set designed to accurately measure moisture in insulating oil, delivering precise results on site. With over 20 years of development behind it, the KF875 is a highly portable instrument with an integral printer and carrying case — combining laboratory-grade accuracy with true field convenience.

Key features of the Megger KF875 Karl Fischer test set

Coulometric Karl Fischer method for accurate moisture-in-oil measurement
Optimised for insulating oils with a specific gravity of 0.875
One-touch operation — a single button press and a 1 ml sample injection
Results shown on the display and printed via the integral printer
Reads in micrograms of water and milligrams per kilogram (ppm)
Highly portable with carrying case; no specialist training required

KF875 moisture-in-oil applications

The KF875 is used to measure the water content of transformer and other insulating oils during commissioning and maintenance, helping engineers assess insulation condition and oil quality. Its portability and one-touch operation make it ideal for on-site testing at substations and in the field, as well as workshop use.

What’s in the box

Megger KF875 coulometric Karl Fischer test set
Integral printer and paper
Sample syringe and reagents / accessories as supplied
Carrying case and user guide

Why buy the Megger KF875 from MME in the UAE

MOHAMMAD MAHDI Electronics Trading LLC (MME) supplies genuine Megger oil test equipment across Dubai, Abu Dhabi and the wider UAE, with expert technical support and fast local delivery. Contact us for pricing, availability and application advice.

Specifications

Megger KF875 Specifications

Feature	KF LAB MkII	KF 875
Titration Method	Coulometric Karl Fischer Titration	Coulometric Karl Fischer Titration
Electrolysis Control	Patented “ACE” control system	Patented “ACE” control system
End Point Detection	AC polarisation	AC polarisation
End Point Indication	Visual display, print out, acoustic beep	Visual display, print out, acoustic beep
Type of Sensor	Two pin platinum electrode	Two pin platinum electrode
Measuring Range	1 μg – 10 mg water	1 μg – 10 mg water
Moisture Range	1 ppm – 100%	1 ppm – 100 ppm
Max. Sensitivity	0.1 μg	0.1 μg
Max. Titration Speed	2 mg per minute	2 mg per minute
Max. Current	400 mA	400 mA
Drift Compensation	Automatically controlled	Automatically controlled
Precision	10-100 μg ±3 μg, 100 μg – 1 mg ±5 μg, above 1 mg ±0.5%	10-100 μg ±3 μg, 100 μg – 1 mg ±5 μg, above 1 mg ±0.5%
Method Storage	10 programmable methods	Preset method
Sample ID Number	User programmable	Not available
Display Format	μg, mg/kg, ppm, %	mg/kg, ppm
Analogue Output	Built-in printer	Built-in printer
Print Format	μg + mg/kg, ppm, %	μg + mg/kg, ppm
Data Logging	USB, RS232 and results manager software	RS232 and results manager software
Indicator Housing	N/A	N/A
Probe Housing	N/A	N/A
Calculation Modes	Weight/weight, Weight/dilution ratio, Volume/volume, Volume/density	Volume/density
Statistics	Up to 99 runs, User programmable	Preset up to 99 runs
Start Delay Time	0-30 mins, selectable	Preset
Min. Titration Time	0-30 mins, selectable	Not available
Language Options	English, Français, Español, Português, Deutsch, Magyar	English
Stirrer Speed	Microprocessor controlled	Microprocessor controlled
Calendar/Clock	Analysis time and date print out	Analysis time and date print out
Keypad/User Controls	Non-tactile membrane, display-prompted menu	Non-tactile membrane, display-prompted menu
Display	40 character alphanumeric backlit display	40 character alphanumeric backlit display
Printer	42 character high-speed thermal printer	42 character high-speed thermal printer
Carry Case	Standard	Standard
Power Supply	90-264 VAC, 47-63 Hz	12 V DC car adapter/internal battery
Power Consumption	45 W	45 W
Battery Life	8 hours running time	8 hours running time
Battery Charging Time	14 hours after average use	14 hours after average use
Battery Low Indicator	Display and print out indication	Display and print out indication
Humidity	5% to 95% RH	5% to 95% RH
Storage Temperature	-10 to +85 ºC	-10 to +85 ºC
Dimensions	250 x 245 x 120 mm	250 x 245 x 120 mm
Weight	3 kg (without carry case)	3 kg (without carry case)

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1 review for Megger KF875 Coulometric Karl Fischer Moisture-in-Oil Test Set

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sam – October 26, 2025

Rated 5 out of 5
The KF875 by Megger made troubleshooting circuit breakers a breeze with its precise and reliable performance.

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