MANUFACTURER
The HI83414 is a high accuracy benchtop Turbidity and Chlorine meter. This meter is a combination of a nephelometer and photometer that measures two of the most important parameters in drinking water: turbidity and chlorine. The meter is supplied complete with AMCO-AEPA-1 turbidity standards for turbidity calibration and NIST traceable standards for chlorine calibration and performance verification. The HI83414 meets or exceeds the requirements of EPA Method 2130B for turbidity measurement and EPA Method 330.5 and Standard Method 4500-Cl G for chlorine.
Complies with EPA methods
USB for data transfer
The HI83414 benchtop turbidity meter is specifically designed to measure two of the most important parameters in drinking water: turbidity and chlorine. It is based on an advanced optical system that ensures accurate and long-term stable results, and minimizes stray light and color interferences. Regular calibration with the supplied standards compensates for variations in the intensity of the tungsten lamp. The colorimetric portion of the meter uses a 525 nm narrow band interference filter for maintaining the proper wavelengths for free and total chlorine measurements. The 25 mm round cuvettes made of special optical glass ensure repeatability of turbidity and chlorine measurements.
Outstanding Features
4 measurement modes – The HI83414 has four measurement options including proportional or non-ratio turbidity, free chlorine, and total chlorine. In proportional mode, turbidity ranges from 0.00 to 4000 NTU, non-ratio from 0.00 to 40.00 NTU. The free or total chlorine range is from 0.00 to 5.00 ppm (mg/L)
Multiple units of measure – Turbidity measurement results can be read in NTU, EBC or Nephelos.
EPA Compliance – The HI83414 meets EPA requirements and Standard Methods for measuring turbidity and chlorine. When the meter is in EPA mode, all turbidity readings are rounded to meet reporting requirements.
Calibration – The HI83414 features a two, three, four, or five-point turbidity calibration function using the supplied standards (<0.1, 15, 100, 750, and 2000 NTU). The calibration points can be changed if user standards are used. For free and total chlorine, use the CAL Check™ standard to calibrate to 1.00 mg/L (ppm).
AMCO AEPA-1 – The AMCO AEPA-1 standard provided is recognized as a primary standard of USEPA. The non-toxic standard is made of styrene divinylbenzene polymer that is uniform in size and density. The standard solution is reusable and stable with a long shelf life.
CAL Check™ – Chlorine validation and calibration with NIST standard provided with COA.
GLP Data – The HI83414 features complete GLP (Good Laboratory Practice) functionality allowing traceability of calibration conditions. Data includes calibration points, date, and time.
Record data – Up to 200 measurements can be stored in internal memory and recalled at any time.
Data transmission– For further storage or analysis, recorded data can be downloaded to a Windows computer using the USB port and HI 92000 software
Tutorial Mode – Unique guidance modes provide additional information to assist the user during measurements. When activated, the instrument displays explanations and a confirmation button when further operations are required.
Contextual help – Context-sensitive help is always available by simply pressing HELP. Clear and easy-to-read on-screen instructions quickly and easily guide users through setup and calibration.
LCD graphic display – A graphical LCD display provides a user-friendly interface. All messages are in easy-to-read text.
Turbidity is one of the most important parameters used to determine the quality of drinking water. Turbidity is considered a characteristic for identifying pathogens in drinking water. In natural waters, turbidity measurements are performed to assess the general quality of water and its suitability for applications involving aquatic organisms. Wastewater monitoring and treatment were once based solely on turbidity control. Nowadays, turbidity measurements at the end of wastewater treatment are necessary to verify that values are within regulatory standards.
Turbidity of water is an optical property that causes light to be scattered and absorbed rather than transmitted. The scattering of light passing through a liquid is primarily caused by the suspended solids present. The higher the turbidity, the greater the amount of scattered light. Even a pure liquid will scatter light to some extent, meaning that no solution has a turbidity value of zero.
Drinking water from water treatment plants is obtained from surface waters subject to EPA requirements for monitoring and reporting of turbidity. Surface water sources include lakes and rivers. The requirements for turbidity measurement and reporting according to EPA Method 180.1 are:
|
Results by NTU |
Round about |
|
0.0 – 1.0 |
0.05 |
|
1 – 10 |
0.1 |
|
10 – 40 |
1 |
|
40 – 100 |
5 |
|
100 – 400 |
10 |
|
400 – 1000 |
50 |
|
>1000 |
100 |
The HI83414 meets the requirements of EPA Method 180.1 and Standard Methods for the Examination of Water and Wastewater 2130 B .
Operating principle
Light beams passing through the sample are scattered in all directions. The intensity and pattern of scattered light are affected by many factors, such as the wavelength of the incident light, particle size and shape, refractive index, and color. The optical system consists of a tungsten lamp, a scattered light detector (90°), and a transmitted light detector (180°).
When measuring turbidity in proportions, the instrument's microprocessor calculates the NTU value from the signals to the two detectors using a color correction and noise compensation algorithm. The optical system and measurement technique also compensate for changes in lamp intensity, reducing the need for frequent calibration.
When measuring non-ratio turbidity, the NTU value is calculated from the signals on the scattered light detector (90°). This method provides high linearity on the low range but is more sensitive to changes in lamp intensity. The lower detection limit of a turbidimeter is determined by stray light that is detected by the sensor but not by light scattering from suspended particles. The optical system is designed to have very low stray light, providing highly accurate results for low turbidity samples.
The AMCO AEPA-1 HI88703-11 standards ensure measurements are traceable to a standard reference material. These standards are used to calibrate and verify the HI83414 turbidity meter.
Supplied with Certificate of Analysis (COA)
– Production batch number
– Expiration date
– Standard value @25°C
– NIST
Box:
– Light blocking
– Impact resistant
SPECIFICATIONS
TURBIDITY
|
Non-proportional mode scale |
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 |
|
Non-scale mode resolution |
0.01; 0.1 NTU; 0.1; 1 Nephelos; 0.01 EBC |
|
The scale Proportional 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 Proportional mode |
0.01; 0.1; 1 NTU; 0.1; 1 Nephelos; 0.01; 0.1, 1 EBC |
|
Accuracy |
±2% value plus 0.02 NTU (0.15 Nephelos; 0.01 EBC), ±5% value above 1000 NTU (6700 Nephelos; 245 EBC) |
|
Select scale |
Automatic |
|
Repeatability |
±1% value or 0.02 NTU (0.15 Nephelos; 0.01 EBC) whichever is greater |
|
Lost light |
< 0.02 NTU (0.15 Nephelos; 0.01 EBC) |
|
Light probe |
silicon photovoltaic cells |
|
Method |
nephelometric (90°) or proportional nephelometric (90° & 180°), conforming to USEPA 180.1 and Standard 2130 B |
|
Measurement mode |
normal, average, continuous |
|
Turbidity standard |
< 0.1, 15, 100, 750 and 2000 NTU |
|
Calibration |
2, 3, 4 or 5 points |
CLO
|
Free chlorine and total chlorine scale |
0.00 to 5.00 mg/L (ppm) |
|
Resolution of residual chlorine and total chlorine |
0.01 mg/L (ppm) from 0.00 to 3.50 mg/L (ppm); 0.10 above 3.50 mg/L (ppm) |
|
Accuracy of free chlorine and total chlorine |
±0.02 mg/L @ 1.00 mg/L |
|
Light probe |
silicon photovoltaic cell @525nm |
|
Method |
USEPA 330.5 and Standard 4500-Cl G. |
GENERAL SPECIFICATIONS
|
Light source |
Tungsten filament lamp / more than 100,000 values |
|
Screen |
40 x 70 mm (64 x 128 pixels) graphic LCD with backlight |
|
Memory |
200 records |
|
Connect |
USB |
|
Environment |
0 to 50°C (32 to 122°F), RH max 95% non-condensing |
|
Source |
115/130 VAC; 50/60 Hz |
|
Size |
230 x 200 x 145 mm (9.0 x 7.9 x 5.7”) |
|
Mass |
2.5 kg (88 oz.) |
|
Guarantee |
12 months |
|
Supply includes |
HI83414 is supplied with sample cuvettes and caps (5), HI83414-11 calibration cuvette set, silicone oil, cuvette wiping cloth, scissors, power cord, instructions. |
