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RADWAG PM 50.4Y.KB Manual Mass Comparator 51 kg x 0.1 g

Radwag Balances and Scales
Mass comparator PM 4Y.KB series comprises two components. One of them holds the electronic module, and the other precise mechanical measuring system 51 kg x 0.1 g more ...
Laboratory Equipment > Analytical Balances > Mass Comparators
RADWAG PM 50.4Y.KB Manual Mass Comparator 51 kg  x  0.1 g

Specifications Chart View Full Detail Page

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Capacity x Readability
51 kgx 0.1 g
Pan Size
302 x 252 mm
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RADWAG PM 50.4Y.KB Manual Mass Comparator 51 kg x 0.1 g
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(48 US States Only)

Price: $5,126.88

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Optional Accessories

View Features

SKU: PM 50.4Y.KB


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.

  • Effective and Excellent MeasurementThe PM 4Y.KB series represents the standard-class manual mass comparators. The comparator allows to compare weights of class F2 and lower of mass ranging between 1 kg and 50 kg.
  • Maximum Comfort of Operation The PM 4Y.KB is comprised of two parts. One featuring an electromagnetic module, the other a precise mechanical measuring system. To ensure required weighing accuracy, the mass comparator ses a semi-automatic system of adjustment carried out using an external adjustment weight. The weighing pan is made of aluminium and features positioners for centring the mass standard.
  • Dedicated Software Specially designed RMCS computer software enables comprehensive realisation of calibration procedures in laboratory. The system manages the whole calibration process, starting from the moment the order is placed, through procedure performance, to the moment of issuing the calibration certificate.
  • Mass comparator
  • Ambient conditions measurement
  • Proximity sensors
  • Replaceable units
  • Multilingual menu

Specially designed suitcase for PM 4Y.KB mass comparator

Positioners on an open-workweighing pan


  • ALARM function
  • graphic level indicator
  • programmable acceptable tilts


  • update balance software
  • export weighing data
  • export/import databases
  • export/import balance settings
  • exchange data between balances


    Optional functions:
  • PRINT function
  • TARE function
  • sensors sensitivity adjustment


  • Ethernet
  • 2 x USB
  • 2 x RS-232
  • 4 in / 4 out
  • WiFi 2,4GHz b,g,n

Weight: 22.00 lb
Other RADWAG PM 4Y.KB Mass Comparators
Image Model Capacity x Readability Legal For Trade
Capacity x Readability
(Pan) Size Price More Info
RADWAG PM 25.4Y.KB Manual Mass Comparator 25.5 kg x  0.01 g PM 25.4Y.KB RADWAG PM 25.4Y.KB Manual Mass Comparator 25.5 kg x 0.01 g $4,496.80
More Info
25.5 kg x 0.01 g - 302 x 252 mm
RADWAG PM 50.4Y.KB Manual Mass Comparator 51 kg  x  0.1 g PM 50.4Y.KB RADWAG PM 50.4Y.KB Manual Mass Comparator 51 kg x 0.1 g $5,126.88
More Info
51 kg x 0.1 g - 302 x 252 mm


Model PM 25.4Y.KB PM 50.4Y.KB
Capacity x Readability 25.5 kg x 0.01 g 51 kg x 0.1 g
Repeatability nominal load * 15 mg (20 kg) 100 mg (50 kg)
Repeatability for small load* 8 mg (1 kg) 70 mg (10 kg)
Stabilization time 5 s 3 s
Adjustment External Calibration External Calibration
Electric compensation range 0 g ÷ 25.5 kg 0 g ÷ 51 g
Eccentricity (for test weight) 1 d / 2 mm (20 kg) / 1 d / 5 mm (2 kg) 1 d / 2 mm (50 kg) / 1 d / 5 mm (10 kg)
OIML calibration range E1 - -
OIML calibration range E2 - -
OIML calibration range F1 - -
OIML calibration range F2 5 kg ÷ 20 kg 50 kg
OIML calibration range M1 2 kg ÷ 20 kg 10 kg ÷ 50 kg
OIML calibration range M2 1 kg ÷ 20 kg 10 kg ÷ 50 kg
Display 5.7" color resistive touch screen
Keypad 8 keys
Ingress protection - indicator IP 43
Touch-free operation 2 programmable sensors
Ethernet 10 / 100 Mbit
RS-232 2
Wi-Fi 802.11 b/g/n
IN/OUT 4 x IN, 4 x OUT
Power supply 110 ÷ 230 V AC / 50 ÷ 60 Hz
Operating temperature +10 ÷ +40 °C
Operating temperature change rate ±2°C / 12 h
Relative humidity variations ±10% / 4 h
Relative humidity*** 30 ÷ 70%
Transport and storage temperature –20 ÷ +50 °C
Weighing pan dimensions 302 x 252 mm
Mass comparator dimensions 368 x 296 x 162 mm
Indicator dimensions 206 x 140 x 71 mm
Mass comparator net weight 10 kg
Mass comparator gross weight 12.2 kg
Mass comparator packaging dimensions 520 x 520 x 280 mm

* repeatability is expressed as a standard deviation determined for 6 ABBA cycles
** dimensions: length x width x depth
*** non-condensing conditions

Accessories - Call for more info

Weighing Tables
granite anti-vibration table
anti-vibration table for APP balances and mass comparators
Ambient Conditions
THB-S or THB-P sensor
Peripheral Devices
Epson dot matrix printer
barcode scanner
WD-5/3Y LCD display (backlit)
Cables, Converters
RS-232 – P0108 computer cable
RS-232 – P0167 computer cable
RS-232 – P0151 Epson printer cable
Anti-Draft Chambers
WAY-AK-SK-00 anti-draft chamber
WAY-AK5-SK-00 anti-draft chamber
Electrical Accessories
power supply with ZR–02 battery

Dedicated Software (not included) - Call for more info

RMCS System
  • performance of calibration procedures in a laboratory from the moment the order is placed, to the moment of issuing a calibration certificate
  • compatible with THB sensors enabling recording ambient conditions
  • export of report results to various files
  • archiving calibration protocols, orders, certificates and ambient conditions
  • collecting measurements
  • carrying out statistical analysis of measurements
  • customized graphs and reports
    Parameters Editor
  • remote change of parameters
  • remote on-line preview of the display
  • displaying current mass indication
  • software update
  • file loading, editing and saving parameters to a file
  • import and export of parameters
  • interfaces: RS232, Ethernet and Wireless Connection
  • quick and easy edition of balance parameters using computer ways of initializing the process of acquiring data from the weighing instrument and sending it to a computer
  • readout of characters transmitted via RS 232 to a computer
    RADWAG Remote Desktop
  • remote control of the mass comparator using computer, telephone or tablet
  • sending text messages
  • version for Windows 10 and Android systems

* within the 48 continental US States

Optional Accessories

RADWAG RMCS PC software for mass metrology
more info
RADWAG RMCS PC software for mass metrology

View Data Sheet (PDF) More about the/RMCS

RMCS system, designed by RADWAG, is dedicated to management of calibrating and testing procedures in a laboratory from the moment of accepting an order, through its progress and until issuing a calibration certificate. The software manages the complete calibrating and testing process.

The operation of mass comparators in connection with the software for network management of calibration process provides improved efficiency, reliable measurement results and complete documentation from calibration process, together with lower labour costs.

The system enables initiating the calibration procedure by ordering a task to a mass comparator, and autonomous executing calibration process on a mass comparator. In both cases, data is transferred to the software for the purpose of registering, controlling and finally issuing a calibration certificate.

Mass comparators linked in the RMCS system autonomously cooperate with THB ambient conditions monitors enabling recording major ambient factors like temperature, humidity and atmospheric pressure throughout the control process. The modules are detachable from the mass comparators for calibration and adjustment of their sensors.

Data on current ambient conditions is displayed in real time on mass comparator’s display. The data is also sent do RMCS software for control and archiving purposes.

System modules:

    Ambient conditions monitoring module:
  • Installed and in direct cooperation with a mass comparator;
  • Enabling recording ambient conditions (temperature, humidity, atmospheric pressure) and calculating air density;
  • Continuous monitoring of ambient conditions in direct vicinity of a mass comparator and its weighing chamber;
  • Graphic presentation of ambient conditions on mass comparator’s display.
    Weighing module:
  • Automatic and manual mass comparators used as components of the RMCS system;
  • Access and management of databases on: standards, test objects, from the level of RMCS software;
  • Execution of calibration tasks ordered in the RMCS software;
  • Self test procedure determining mass comparator’s repeatability parameter;
  • Transfer of measurement results to the software memory.
    Calculating and data storage module:
  • Sending tasks to mass comparators;
  • Downloading data on mass and ambient conditions from mass comparators;
  • Operation on databases of clients / tasks / standards;
  • Monitoring of future calibration dates;
  • Database of accomplished calibrations, printouts and saved documentation.

Software functions:

    RMCS functionality:
  • Complete management of a metrological laboratory calibrating mass standards and weights with application of Y series of RADWAG mass comparators;
  • Calibration using ABBA and ABA methods;
  • Application of MS SQL database for network supervision of multiple computer stands;
  • Complete management of calibration orders;
  • Extended database of mass standards and test objects;
  • Extended database of clients, operators and users;
  • Database of manual and automatic mass comparators;
  • Database of calibration orders;
  • Managing pending tasks based on issued calibration orders;
  • Planning tasks and orders execution;
  • Weight checking procedure without an order – Quick Check option;
  • Manual or automatic calibration of test objects;
  • Cooperation with RADWAG automatic mass comparators;
  • Bilateral data synchronization with RADWAG mass comparators;
  • Reporting from calibration process;
  • Issuing calibration certificates according to pre-defined template;
  • Exporting report results to various file formats: PDF, MS Word, Excel;
  • Record of events;
  • Register of orders and calibration certificates;
  • Saving copies of all calibration protocols, orders, calibration certificates and records of ambient conditions;
  • Secured access to the software – log in procedure using password.
RADWAG Suitcase for PM 4Y.KB Mass Comparator
more info
RADWAG Suitcase for PM 4Y.KB Mass Comparator

Professional suitcase ensures safe transport of the mass comparator. The inside of the suitcase suits outlines of all elements of the device in order to prevent movement of the components and protect them against damage

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