| Range |
Turbidity |
0.00 to 9.99; 10.0 to 99.9 and 100 to 1000 NTU |
| |
Free and
Total Cl2 |
0.00 to 5.00 mg/L |
| Resolution |
Turbidity |
0.01 NTU from 0.00 to 9.99 NTU; 0.1 NTU from 10.0 to 99.9 NTU; 1 NTU from 100 to 1000 NTU |
| |
Free and
Total Cl2 |
0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 above 3.50 mg/L |
| Accuracy @25°C |
Turbidity |
±2% of reading plus 0.02 NTU |
| |
Free and
Total Cl2 |
±0.03 mg/L ±3% of reading (whichever is greater) |
| Method |
Turbidity |
Ratio Nephelometric Method (90°), ratio of scattered and transmitted light; adaptation of the USEPA Method 180.1 and Standard Method 2130 B |
| |
Free and Total Cl2 |
adaptation of the USEPA Method 330.5 and Standard Method 4500-Cl G. The reaction between chlorine and DPD reagent causes a pink tint in the sample. |
| Standards |
Turbidity |
<0.1, 15, 100 and 750 NTU |
| |
Free and Total Cl2 |
1 mg/L free chlorine, 1 mg/L total chlorine |
| Calibration |
Turbidity |
two, three or four-point calibration |
| |
Free and Total Cl2 |
one-point calibration |
| Light Detector |
Turbidity |
silicon photocell |
| |
Free and
Total Cl2 |
silicon photocell with 525 nm narrow band interference filter |
Turbidity Range
Selection |
|
automatic |
| Stray Light |
|
< 0.02 NTU |
| Measuring Mode |
|
normal, average, continuous |
| Light Source |
|
tungsten filament lamp |
| Lamp Life |
|
greater than 100,000 readings |
| Log Memory |
|
200 records |
| Serial Interface |
|
USB or RS 232 |
| Environment |
|
0°C (32°F) to 50°C (122°F); max 95% RH non-condensing |
| Power Supply |
|
1.5V AA alkaline batteries (4) or AC adapter; auto-off after 15 minutes of non-use |
| Dimensions / Weight |
|
224 x 87 x 77 mm (8.8 x 3.4 x 3.0”) / 512 g (18 oz.) |