The newest line of Radwag Mass Comparators enables adjusting mass standards and weights according to the OIML recommendations (R-111) from 5 kg to 20kg 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 APP 4Y.KO 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 made of aluminium is covered with cork layer and features centering holders for the weights. The APP 4Y.KO series features an intuitive menu supporting a user in instrument operation.
CAUTION:
For correct mass standards comparison process using comparator, it is required to use an anti-vibration granite table and an anti-draft chamber.
Anti-draft chamber comes standard with the comparator. Anti-vibration table and its parameters are to be found here: Anti-vibration tables for APP balances and comparators
E1 |
20 kg |
E2 |
10 kg ÷ 20 kg |
F1 |
2 kg ÷ 20 kg |
F2 |
1 kg ÷ 20 kg |
M1 |
1 kg ÷ 20 kg |
M2 |
1 kg ÷ 20 kg |
Maximum capacity [Max] |
30.5 kg |
Readability [d] |
1 mg |
Repeatability absolute |
5 mg (20 kg) |
Repeatability (Max) |
3 mg (20 kg) |
Repeatability low load |
3 mg (1 kg) |
Repeatability typical |
3 mg (20 kg) |
Eccentricity (tested load) |
2d / 1 |
Electric compensation range |
100 g ÷ 30.5 kg |
Stabilization time |
20 s |
Adjustment |
external |
Supplementary weights internal |
half automatic |
Supplementary weights external |
- |
Operating temperature |
+15 ÷ +30 °C |
Operating temperature change rate |
±0.5°C/12h |
Relative humidity |
30% ÷ 70% |
Relative humidity change rate |
±5%/4h |
Weighing pan dimensions |
ø220 (ø300) mm |
Weighing device dimensions |
454×300×380 mm |
Controling device dimensions |
206×140×70 mm |
Anti-draft chamber dimensions |
700×440×550 mm |
Packaging dimensions |
1160×650×700 mm |
Chamber packaging size |
960×825×730 mm |
Net weight |
41 kg |
Net weight |
41 kg |
Gross weight |
67 kg |
Gross weight |
67 kg |
Repeatability is expressed as a standard deviation determined for 6 ABBA cycles. Standard deviation is experimentally determined under ambient conditions for calibration of E1 class mass standards specified in OIML R111 (Table C.1.) document.
RMCS - Radwag Mass Comparator System
Self centering pan for APP Series Comparator
Technical specification
Publications and teaching materials
User Manual
(1.82 MB)

Data Sheet
(0.98 MB)

Conformity Declaration
(0.04 MB)

RMCS
(2.97 MB)

THBR System 2.0
(5.17 MB)

Detection of vibrations at the electronic balances workstation
(2.02 MB)

Automatic Comparison of Weights and Mass Standards 2017
(8.34 MB)

Principles_of_metrology
(0.10 MB)

Guidelines for a weighing room for correct microbalance and mass comparator operation
(0.82 MB)

Mass Comparators
(11.13 MB)
