KERN KFB-TM Operating And Installation Instructions

Also see for KFB-TM: Service manual Operating and installation instructions

Contents

KERN KFB-TM Operating And Installation Instructions Manual pdf 52 page image

52 KFB/KFN-TM-BA_IA-e-162412 Installing display unit / weighing bridge• Installation / configuration of a weighing system must be carried outby a well acquainted specialist with the workings of weighingbalances.12.1 Technical dataSupply voltage: 5 V/150mAMax. signal voltage 0-10 mVZeroing range 0-2 mVSensitivity 2-3 mV/VResistance parameter 80 - 100 Ω, max 4 items per 350 Ω load cell12.2 Weighing system designThe display unit is suitable for connection to any analogue platform in compliancewith the required specifications.The following data must be established before selecting a weighing cell:• Weighing balance capacityThis usually corresponds to the heaviest load to be weighed.• PreloadThis corresponds to the total weight of all parts that are to be placed on theweighing cell such as upper part of platform, weighing pan etc.• Total zero setting rangeThis is composed of the start-up zero setting range (± 2%) and the zerosetting range available to the user via the ZERO-key (2%). The total zerosetting range equals therefore 4 % of the scale’s capacity.The addition of weighing scales capacity, preload and the total zero settingrange give the required capacity for the weighing cell.To avoid overloading of the weighing cell, include an additional safetymargin.• Smallest desired display division• Verifiability, if requiredThe application of the display unit as a verified weighing system requiresthat you short-circuit the two contacts [K1] of the circuit board, using ajumper; for position see chap. 6.11.Remove the jumper for weighing systems not able to be verified.