AK-4/1000 Automatic Mass Comparators

AK-4/1000 Automatic Mass Comparators view:1

Product code: WL-413-0002


Maximum capacity [Max]: 1,02kg

Readability [d]: 0,005mg

Automatic mass comparator AK-4/1000 series is intended to automatic determination of weights mass deviations with operator’s activity limited to the minimum. The comparator enables determining deviations of three tested weights in a single cycle. AK-4/1000 is designed to compare weights from 100 g to 1 kg. The instrument is commonly applicable in mass measuring laboratories, and particularly in certification units for weights classes E and F.

Design and functionality:
The supervising part of the mass comparator is a digital module which cooperates with a controller of instrument’s mechanical components. The digital module and the automatic loader are located in mass comparator’s weighing chamber. The instrument is operated by means of digital display which is plugged to mass comparator’s controller. The supervising elements are not integrated with mass comparator’s mechanical parts, thus enabling separation of instrument’s weighing chamber from ambient conditions influence.



Maximum capacity [Max] 1,02 kg
Readability [d] 0,005 mg
Weighing pan dimensions ø50 mm
Repeatability at low load 0,012 mg (100 g) 
Repeatability at nominal load 0,012 mg (1 kg) 
Stabilization time 30 s
Operating temperature +15° ÷ +30°C 
Power supply 110 ÷ 230 V AC / 50 ÷ 60 Hz / 13,5 ÷ 16 V DC 
Packaging dimensions 860×800×560  mm
Atmospheric humidity 40% ÷ 60% 
Electric compensation range - 10 ÷ + 20 g
Adjustment external 
Working temperature change rate ± 0,5 °C / 12 h (± 0,3 °C / 4 h) 
Atmospheric humidity change rate ±2%/4h 
Net weight 46,8 kg
Gross weight 66,8 kg
Weighing device dimensions 385×215×600 mm
Controling device dimensions 206×140×70  mm
Supplementary weights internal half automatic 
Supplementary weights external
E1 100 g ÷ 1 kg 
E2 100 g ÷ 1 kg 
F1 100 g ÷ 1 kg 
F2 100 g ÷ 1 kg 
Eccentricity (tested load) 0 mg
Chamber packaging size 950×420×630 mm
Anti-draft chamber dimensions 560×340×665 mm
Magazine positions
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.


Technical Documentation

User Manual
1.93 MB EN

see the publication

Data Sheet
0.43 MB EN

see the publication
Publications and teaching materials


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Radwag Balances and Scales
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26-600 Radom
tel.: +48 48 386 63 03
e-mail: export@radwag.com
TIN: PL7960000327
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