Cole-Parmer Jenway Model 4520 is an extensively specified conductivity, resistivity, total dissolved solids (TDS) , salinity and temperature meter with GLP support, 1, 2 or 3 point calibration and datalogging.
Features:
- Back-lit graphics dual parameter display
- 500 reading memory
- Automatic temperature compensation
- Bi-directional RS232 link to printer or PC, or alternatively an infra-red data link output
- Simultaneous conductivity and temperature display
General specifications:
| Model | 4520 | |
| Ranges (resolution) | conductivity TDS resistivity salinity temperature | 0.0 to 1999mS/cm (0.001µS/cm to 1mS/cm*) 0 to 19.99S/cm (0.01S/cm) 0 to 1999g/litre (0.001mg/l to 1g/litre*) - 0 to 20Mohm (0.01Mohm) 0 to 99.9g/litre (0.1g/litre) -10.0 to 105.0°C (0.1°C) or 14 to 221°F (1°F) |
| Temperature compensation | automatic or manual | 0 to 100°C (32 to 212°F) |
| Accuracy | conductivity TDS resistivity salinity temperature | ±0.5% ±2 digits ±0.5% ±2 digits ±2% ±2 digits ±1g/litre (0 to 35g/litre) ±3g/litre (rest of range) ±0.5°C (±1°F) |
| Calibration | 1, 2 or 3 point on standard solutions or via cell constant adjustment. Adjustable calibration reminder settable from 1 to 999 hour intervals | |
| Memory | 500 readings | |
| Outputs | Analogue recorder, bi-directional RS232, infra-red data link (IrDA) | |
| Alarm points | 0 to 19.99S | |
| Readout | Graphics LCD | |
| Overall L x W x H | mm | 210 x 250 x 55 |
| Weight | g | 850 |
*Only with cell constants >5.
Supplied with swing-arm electrode holder and glass conductivity cell (K=1) with automatic temperature compensation, instruction manual and mains adapter. A 230V 50Hz supply is required for the adapter.