The newest line of Radwag Mass Comparators enables adjusting mass standards and weights according to the OIML recommendations (R-111) from 1 kg to 50kg for F2 class and lower.
The 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 PM 4Y.KB series comprises two components. One of them holds the electronic module, and the other precise mechanical measuring system.
High measuring accuracy is guaranteed by semi-automatic adjustment system with external mass standard. The weighing pan is made of aluminium and features holders for centering the tested mass standard. The PM 4Y.KB series features an intuitive menu supporting a user while operating the instrument.
5 kg ÷ 20 kg
2 kg ÷ 25 kg
1 kg ÷ 25 kg
|Maximum capacity [Max]
|Repeatability (5% Max)
8 mg (1 kg)
15 mg (20 kg)
|Eccentricity (tested load)
1d / 2
|Electric compensation range
0 ÷ 25.5 kg
100 ÷ 240 V AC 50 / 60 Hz
+10 ÷ +40
|Working temperature change rate
30% ÷ 70%
|Atmospheric humidity change rate
|Weighing pan dimensions
|Weighing device dimensions
|Controling device dimensions
is expressed as a standard deviation determined for 6 ABBA cycles. Standard deviation is experimentally determined under ambient conditions for calibration of F2 class mass standards specified in OIML R111 (Table C.1.) document.
RMCS - Radwag Mass Comparator System
RADWAG Mass comparators
Publications and teaching materials
THBR System 2.0
Detection of vibrations at the electronic balances workstation
Automatic Comparison of Weights and Mass Standards 2017
Guidelines for a weighing room for correct microbalance and mass comparator operation