Turbidity is measured according to ISO 7027 by nephelometric means (90° scattered light). The infra-red light-source permits measurement of coloured and colour-free samples. The automatic measurement range detection facility (Autorange) enables direct turbidity measurement from 0.01 to 1100 NTU.
Specifications | |
Light source: | IR-LED (860nm) |
Keypad: | acid and solvent resistant, membrane switch keypad |
Auto - Off: | automatic switch off approx. 20 min after last key press |
Display: | Graphic-display |
Update: | Software update via internet |
Memory: | 1000 data sets with date, time and registration no. |
Measuring range: | 0.01 to 1100NTU (Auto range) |
Resolution: | 0.01NTU (0.01 to 9.99NTU) 0.1NTU (10 to 99.9NTU) 1NTU (100 to 1000NTU) |
Accuracy: | ± 2% of measured value or 0.01 (0 to 500NTU)/± 5% of measured value (500 to 1100NTU) |
Ambient conditions: | 0 to 40°C at 30 to 90% R.H. (non condensing) |
Interface: | RS232 |
Power supply: | 7 NiMH rechargeable batteries (AA/Mignon), wall plug mains adapter and Lithium battery for data storage and real time clock |