| Range |
Non Ratio Mode |
0.00 to 9.99; 10.0 to 40.0 NTU;
0.0 to 99.9; 100 to 268 Nephelos
0.00 to 9.80 EBC |
| |
Ratio Mode |
0.00 to 9.99; 10.0 to 99.9; 100 to 4000 NTU
0.0 to 99.9; 100 to 26800 Nephelos
0.00 to 9.99; 10.0 to 99.9; 100 to 980 EBC |
| |
Free and
Total Cl |
0.00 to 5.00 mg/L (ppm) |
| Resolution |
Non Ratio Mode |
0.01; 0.1 NTU; 0.1; 1 Nephelos; 0.01 EBC |
| |
Ratio Mode |
0.01; 0.1; 1 NTU; 0.1; 1 Nephelos; 0.01; 0.1, 1 EBC |
| |
Free and
Total Cl |
0.01 mg/L (ppm) from 0.00 to 3.50 mg/L (ppm)
0.10 above 3.50 mg/L (ppm) |
Accuracy
@25°C |
Turbidity |
±2% of reading plus 0.02 NTU (0.15 Nephelos; 0.01 EBC)
±5% of reading above 1000 NTU (6700 Nephelos; 245 EBC) |
| |
Free and
Total Cl |
±0.03 mg/L or ±3% of reading
(whichever is greater) |
| Method |
Turbidity |
Nephelometric method (90°) or Ratio Nephelometric Method (90° & 180°), Adaptation of the USEPA Method 108.1 and Standard Method 2130 B |
| |
Free and
Total Cl |
adaptation of the USEPA Method 330.5
and Standard Method 4500-Cl G. |
| Light Detector |
Turbidity |
silicon photocell |
| |
Free and
Total Cl |
silicon photocell with 525 nm narrow band interference filters |
| Standards |
Turbidity |
<0.1, 15, 100, 750 and 2000 NTU |
| |
Free and
Total Cl |
1.00 mg/L free/total chlorine |
| Calibration |
Turbidity |
two, three, four or five-point calibration |
| |
Free and
Total Cl |
one-point calibration |
| Turbidity Range Selection |
|
automatic |
| Repeatability |
|
±1% of reading or 0.02 NTU (0.15 Nephelos; 0.01 EBC) whichever is greater |
| Stray Light |
|
< 0.02 NTU (0.15 Nephelos; 0.01 EBC) |
| Measuring Mode |
|
normal, average, continuous |
| Light Source/Life |
|
tungsten filament lamp / greater than 100,000 readings |
| Display |
|
40 x 70 mm graphic LCD (64 x 28 pixels) with backlight |
| Log Memory |
|
200 records |
| PC Interface |
|
USB |
| Environment |
|
0°C (32°F) to 50°C (122°F); max 95% RH non-condensing |
| Power Supply |
|
230 V/50 Hz or 115 V/60 Hz 20 W; auto-off after 15 minutes of non-use |
| Dimensions |
|
230 x 200 x 145 mm (9 x 7.9 x 5.7”) |
| Weight |
|
2.5 Kg (88 oz.) |