How is the cloudiness measured

Turbidimeter | Measuring turbidity for product water quality - Neomeris: Industry water treatment

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Turbidity meter; Measuring turbidity as an indicator of the product water quality

Highly sensitive turbidity measurement, measuring device for water treatment

Professional turbidity meter and control device for turbidity

The measuring device N-46/76 is a stationary measuring and control device for measuring turbidity in industrial water treatment plants as
Indicator for the product water quality.

  • Measuring ranges from 0-2,000, 0-20.0, 0-200.0 or 0-400.0 NTU
  • Three control relays: standard for alarm, control or fault indication
  • Optional supply voltage 100-240 VAC +/- 10% or 12-24 VDC.
  • Profibus-DP, Modbus-RTU, Modbus-TCP / IP, or Ethernet-IP are available.
  • Large backlit LCD display

  • Method: Tungsten white light light source (EPA compliant) with flow sensor (photo detector) or
  • N-46 / 76IR with infrared source (ISO-7027,27027 compatible) and flow sensor
  • Measuring range: 0–2,000 / 20.00 / 200.0 / 400.0 NTU
  • Accuracy: 0.5% of the full scale value
  • Electrical output: 2 isolated 4–20 mA
  • Relay output: 3 SPDT relays
  • Mains connection: 100–240 VAC, 50–60 Hz
Stationary measuring device and control device N-46/76 IR for measuring turbidity in industrial water treatment plants as an indicator for the product water quality.
Incl. Sensor

Infrared, IR source (ISO 7027, 27027 compliant) with flow sensor
Tungsten white light source (EPA compliant) with flow sensor (photo detector)
Measuring ranges: 0–2,000 NTU, 0–20.00 NTU, 0– 200.0 NTU, 0–400.0 NTU
Accuracy: 0.5%

Inexpensive measuring device, control device N-46/76 for turbidity

Highly sensitive turbidity measurement
Turbidity is a general indicator of the optical clarity of water and is defined as follows:
As the amount of light scattered by particles in solution.
In practice, a light beam is directed into a water sample and a photodetector measures the light that is scattered at an angle of 90 degrees to the incident light beam.
While other scattering angles are possible, the 90-degree measurement angle has become the standard for measuring turbidity in most water systems.
It is used as a relative indicator of the amount of suspended solids in a solution and is measured in virtually all drinking water systems.
It is also used in industrial water treatment systems as an indicator of product water quality.
The Neomeris N-46/76 turbidity monitor is designed to meet the needs of the following two areas:
Municipal drinking water systems and industrial water treatment for reliable turbidity measurement with a low measuring range.
This 90 degree scatter measurement uses either white light or an infrared energy source. The measuring device for turbidity offers a highly sensitive measurement with unsurpassed zero point stability.
Turbidity measurements down to 0.001 NTU or up to 400 NTU can be measured.
With the same monitor, eliminating the need for separate high and low range instruments.
Turbidity sensor for the measuring device N-46/76
The turbidity sensor used in the measuring device N-46/76 is a planer sensor with a mounted light source and photo detector on a flat surface.
Lenses in front of the light source direct the light beam into the sample at a 45-degree angle.
Another lens in front of the photodetector collects the 90-degree scattered light and directs it onto the detector. The signal generated by the detector is transferred within the sensor for transmission to the display unit. Periodic pulsing of the light source enables the sensor zero point to be set automatically, for improved stability in short-range applications.
Turbidity sensors are available for measurements in a pressurized flow cell or for direct immersion in open tanks.
A 1-1 / 2 "flow tee assembly is also available for the direct in-line version.
The flow cell is required for very low measurements (0-2 NTU), while the immersion unit is used for applications with higher turbidity, such as waste water runoff or raw water.
The electronic meter is an AC or DC powered instrument that provides an LCD display of the turbidity value, as well as the display of alarm status and device diagnostics.
The NEMA 4X enclosure can be wall-mounted, on a pipe, or on a handrail using the universal mounting kit that is included.
The monitor provides an indication of turbidity over a variety of operating ranges.
The minimum display range from 0-2 NTU offers a resolution down to 0.001 NTU and is suitable for almost every final filter monitoring.
Ranges from 0-20, 0-200 or 0-400 NTU are available for raw water or wastewater treatment plant discharge monitoring.
The N-46/76 offers three programmable SPDT alarm relays and two isolated 4-20 mA outputs.
The analog outputs can be programmed for full outputs of only 0-0.2 NTU and can be inverted if desired. Neomeris N-46/76 monitors also provide sensor diagnostics to warn of conditions that result in inaccurate or invalid readings.
The sensor is continuously monitored for optical contamination and displays an alarm message if the sensor needs to be cleaned. In addition, the sensor detects the lack of water in the flow cell and delivers a "dry cell" when an air interface is detected.
These alarm conditions cause a third alarm relay to be activated which can be used to remotely display these conditions.
Further measurement parameters (such as permanganate or sulfide) on request.
Likewise, other voltages / optional outputs or sensors as well as other accessories for all listed devices.
Contact us on +49 (0) 51 21 7609-0 or request a call back here
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