• Conductivity, resistivity, TDS and salinity modes • Special pure water mode for ultra low conductivity measurements • Storage of 500 results with built in data logger • Infra-red data link (IrDA) for connection to printer and RS232 link to connect to printer or Bench Conductivity/TDS Meter The4520 is a high specification laboratory conductivity/resistivity/ TDS/salinity and temperature meter that offers additional accuracy with 1, 2 or 3 point conductivity calibration across the wide measurement range of 0 to 19.99S. The dedicated 'pure water' mode ensures the optimum accuracy for this difficult Technical Specification_ Range 6 auto-selected from 0 to 19.99S* Range 6 auto selected ranges 0-1999g/l* P Calibration reminder interval, alarm outputs and security code protected data itputs Analogue, RS232 and IrDA interface Voltage variants available see page 94 Ordering Information Part Code Description 452 001 4520 conductivity meter supplied with glass conductivity probe with ATC (K=1) (027 013), electrode holder (903 300) and UK power supply