Description
Ultra-High Precision Mass Comparator for Calibration of E1 Class Weights
The Radwag UYA 6.5Y.KO Mass Comparator is an ultra-high precision metrology instrument designed for calibration and adjustment of mass standards from 1 mg to 5 g in accordance with OIML R111 recommendations. With 0.1 µg readability and exceptional repeatability, this comparator provides the precision required by accredited calibration laboratories and national metrology institutes.
Radwag mass comparators are widely used to ensure traceability of mass measurements and verify reference weights, supporting legal metrology requirements and international calibration standards.
The UYA 6.5Y.KO model features an integrated anti-draft chamber, minimizing environmental disturbances such as air currents that can affect ultra-precise measurements. The comparator is housed inside this chamber, and sliding side glass panels allow convenient access to the weighing area.
To eliminate temperature influence from electronic components, the comparator design separates the electronic module from the mechanical measuring system, ensuring stable and accurate measurement results even during extended operation.
The comparator includes a cylindrical weighing chamber with a glass draft shield and automatic door opening system, while all internal components are constructed from glass or metal to reduce electrostatic interference.
Key Features of the Radwag UYA 6.5Y.KO Mass Comparator
Ultra-Precision Measurement Performance
Provides 0.1 µg readability with 6.1 g maximum capacity, enabling extremely precise calibration of mass standards.
OIML R111 Compliance
Designed for calibration and verification of E1 class weights and lower classes in accordance with OIML R111 recommendations.
Anti-Draft Chamber
The standard anti-draft chamber minimizes environmental disturbances and stabilizes measurement conditions.
Advanced Mechanical-Electronic Separation
Separate electronic and mechanical modules eliminate temperature effects caused by electronic component heating.
Cylindrical Weighing Chamber
The comparator features an aesthetic cylindrical weighing chamber with:
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Glass draft shield
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Automatic door opening system
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Minimal electrostatic interference
Electrostatic Resistance
All chamber components are constructed from glass and metal materials, reducing electrostatic effects on measurement results.
10″ Touchscreen Interface
A large 10-inch touchscreen terminal provides intuitive control and clear visualization of measurement data.
Advanced Connectivity
Communication interfaces include:
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USB-A ×2
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USB-C
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HDMI
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Ethernet
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Wi-Fi
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Hotspot connectivity
This enables seamless integration with laboratory data systems and calibration software.
Applications
The Radwag UYA 6.5Y.KO mass comparator is designed for high-precision metrology applications including:
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Accredited calibration laboratories
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National metrology institutes
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Mass standard calibration facilities
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Verification of reference weights
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Legal metrology laboratories
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High-precision research laboratories
Technical Specifications
Model
UYA 6.5Y.KO
Part Number: WL-408-0007
Weighing Performance
Maximum capacity
6.1 g
Readability
0.1 µg
Electric compensation range
0 – 6.1 g
Accuracy
Repeatability (5% Max)
0.2 µg
Repeatability (Max)
0.4 µg
Permissible repeatability
0.6 µg
Eccentricity (tested load)
1d / 1 mm
Stabilization time
Maximum 30 seconds
Adjustment
Internal automatic adjustment
Display
10-inch touchscreen
Connectivity
Communication interfaces include:
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USB-A ×2
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USB-C
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HDMI
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Ethernet
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Wi-Fi
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Hotspot
Environmental Requirements
Operating temperature
15°C – 30°C
Temperature stability requirement
±0.5°C / 12 hours
Relative humidity
40% – 60%
Humidity change rate
±2% / 4 hours
Weighing Chamber
Pan diameter
16 mm
Chamber dimensions
820 × 840 × 630 mm
Dimensions & Weight
Package dimensions
655 × 755 × 445 mm
Unit weight
23 lbs
Shipping weight
40 lbs
Power Requirements
Adapter
100–240V AC, 50/60 Hz
Warranty
2-Year Manufacturer Warranty