WAY 500.4Y.KO Mass Comparator from Radwag

Radwag WAY 500.4Y.KO
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The newest line of Radwag Mass Comparators enables adjusting mass standards and weights according to the OIML recommendations (R-111) from 1 mg to 5 kg for E1 class and lower.

Mass comparators are used both for ensuring traceability of mass measurements, and verification of weights in accordance with the principles of legal metrology. RADWAG Mass Comparators have gained recognition among Accredited Calibration Laboratories in many countries.

Mass comparator WAY 4Y.KO series similarly to other models, comprises two components. One of them holds the electronic module, and the other precise mechanical measuring system.

The WAY 4Y.KO series comes standard with an aesthetic, large weighing chamber with glass anti-draft shield. All elements of the weighing chamber are manufactured from glass or metal to minimize the influence of electrostatic charges on weighing result. Mass comparator WAY 4Y.KO series features an intuitive menu supporting a user while operating the instrument.


E1: 200 g ÷ 500 g

E2: 10 g ÷ 500 g

F1: 1 g ÷ 500 g

F2: 1 g ÷ 500 g

M1: 1 g ÷ 500 g

M2: 1 g ÷ 500 g 

Max capacity [Max]: 520 g

Readability [d]: 0.1 mg

Reading unit: 0.01 mg

Repeatability: 0.02 mg

Stabilization time: 30 s

Electric compensation range: -10 g ÷ + 20 g

Adjustment: external

Supplementary weights internal: 300 g, 100 g, 50 g

Supplementary weights external: 30 g, 2 x 10 g

Working temperature: +15-+30°C

Working temperature change rate: ±0.5°C/12h (±0.3°C/h)

Atmospheric humidity: 40% ÷ 60%

Atmospheric humidity change rate: ±5%/4h

Power supply: 110 ÷ 230 V AC / 50 ÷ 60 Hz / 13.5 ÷ 16 V DC / 1.1 A

Pan Size: ø 50 mm

Weighing device dimensions: 385×195×500 mm

Controlling device dimensions: 206×140×70 mm

Packaging size: 560×340×565 mm

Net weight/gross weight: 15.5 kg / 32 kg

Lab.Equipment presents robust mass comparators from industry-leading brands like Radwag. Built to offer high resolution and repeatability, these comparator balances secure traceability and verification of mass measurements and are best when working on weight measurement analysis of national standard mass or when doing absolute weighing. Discover if the Radwag WAY 500.4Y.KO suits your lab requirements by browsing through our frequently asked questions below.

What is the maximum weighing capacity of the Radwag WAY 500.4Y.KO?

The Radwag WAY 500.4Y.KO offers a maximum weighing capacity of 520g and is built with a 50mm pan size so make sure your samples do not exceed these.

Compared to other mass comparators, how accurate and sensitive is the Radwag WAY 500.4Y.KO?

With a reading interval of 0.01mg, the Radwag WAY 500.4Y.KO makes way for accurate weighing results.

What is the repeatability value offered by the Radwag WAY 500.4Y.KO?

For low and nominal loads (100mg/500g), the Radwag WAY 500.4Y.KO presents a repeatability of 0.02mg, ensuring you get the same results when weighing the same samples under the same conditions.

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What is the stabilization time offered by the Radwag WAY 500.4Y.KO?

The Radwag WAY 500.4Y.KO takes 30 seconds to stabilize from the time you put samples on it and display results.

What is the operating temperature of the Radwag WAY 500.4Y.KO?

Work on samples with the Radwag WAY 500.4Y.KO that can operate between temperatures +15 - +30 °C.

Any other notable features of the Radwag WAY 500.4Y.KO that would make me want to get it?

Get consistent measurement results with the Radwag WAY 500.4Y.KO that also features a large weighing chamber complete with an anti-draft shield for convenient weighing, a user-friendly menu screen for easy data management, infrared proximity sensors for print and tare functions, as well as multiple communication interfaces including ethernet, RS232 and USB ports.

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