11
SPECIFICATIONS
Turbidity
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
Resolution - non ratio mode
0.01; 0.1 NTU
0.1; 1 Nephelos
0.01 EBC
Range - 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
Resolution - ratio mode
0.01; 0.1; 1 NTU
0.1; 1 Nephelos
0.01; 0.1, 1 EBC
Range selection
Automatically
Accuracy
±2% of reading plus 0.02 NTU (0.15 Nephelos; 0.01 EBC)
±5% of reading above 1000 NTU (6700 Nephelos; 245 EBC)
Repeatibility
±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)
Light Detector
Silicon Photocell
Method
Nephelometric method (90°) or Ratio Nephelometric Method
(90° & 180°), Adaptation of the
USEPA Method 180.1
and
Standard Method 2130 B
.
Measuring mode
Normal, Average, Continuous.
Turbidity Standards
<0.1, 15, 100, 750 and 2000 NTU
Calibration
Two, three, four or five-point calibration
Free and total Chlorine
Range Free Cl
2
0.00 to 5.00 mg/L
Total Cl
2
0.00 to 5.00 mg/L
Resolution
0.01 mg/L from 0.00 to 3.50 mg/L; 0.10 above 3.50 mg/L
Accuracy
±0.02 mg/L @ 1.00 mg/L
Detector
Silicon photocell with 525 nm narrow band interference filters
Method
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.
