The newest line of Radwag Mass Comparators enables adjusting mass standards and weights according to the OIML recommendations (R-111) from 500 g to 1 kg 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 PS 4Y.KB series comprises two components. One of them holds the electronic module, and the other precise mechanical measuring system.
The comparator features an aesthetic, large weighing chamber and a glass draft shield in one with opened side and top door. All elements of the weighing chamber are manufactured from glass or metal to minimize the influence of electrostatic charges on weighing result. The PS 4Y.KB series features an intuitive menu supporting a user in instrument operation.
500 g ÷ 1 kg
100 g ÷ 1 kg
100 g ÷ 1 kg
|Maximum capacity [Max]
|Repeatability (5% Max)
1 mg (100 g)
1 mg (1 kg)
|Eccentricity (tested load)
1d / 2
|Electric compensation range
0 ÷ 1050 g
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