Analog Current Output Turbidity Instruments
Last Updated: April 1, 2025
Description
Analog Current Output Turbidity Instruments are devices designed to measure the turbidity of a liquid, which is the cloudiness or haziness caused by large numbers of individual particles. These instruments provide an analog current output that corresponds to the turbidity level of the sample being measured.
Working Principle
These instruments typically operate by using a light source to emit light into the sample. The light is scattered by the particles in the liquid, and a detector measures the intensity of the scattered light at a specific angle, often 90 degrees. The amount of scattered light is proportional to the turbidity of the sample. This measurement is then converted into an analog current output, which can be used for monitoring and control purposes. The use of non-contact optics and features like automatic chamber draining can enhance measurement reliability and reduce maintenance needs .
Applications
Analog Current Output Turbidity Instruments are commonly used in water quality analysis. Specific applications include monitoring the turbidity of drinking water to ensure safety and compliance with health standards, as well as assessing the impact of turbidity on aquatic life by measuring how much sunlight penetrates water bodies .
Advantages over other Mechanical - Shock and Vibration Control Equipment
While the documents do not provide specific comparisons between Analog Current Output Turbidity Instruments and mechanical shock and vibration control equipment, it can be inferred that turbidity instruments offer precise measurement capabilities that are crucial for applications requiring high accuracy in water quality monitoring. Their design allows for continuous monitoring and can be less susceptible to mechanical wear and tear compared to mechanical equipment.
Limitations
One limitation of these instruments is the potential for fouling, where biofilms or other contaminants can affect the accuracy of the measurements. Additionally, the light source, such as tungsten filament lamps, may require stable voltage and are subject to burnout over time, which can impact the reliability of the instrument .
Considerations
When considering the use of Analog Current Output Turbidity Instruments, factors such as initial costs, operating expenses, and maintenance requirements should be evaluated. Instruments with features like non-contact optics and automatic cleaning mechanisms can reduce maintenance costs and improve durability. However, regular calibration and cleaning are necessary to ensure accuracy, which can add to the operational expenses. The choice of instrument should also consider the specific turbidity range and environmental conditions of the application to ensure optimal performance .
from ABB Measurement & Analytics
AV412 UV254 dual-channel, low- and high-range dissolved organics monitors are designed for use on potable water treatment plants. In particular, they can be used to monitor the quality of the outlet from sand and carbon filters to provide a THM precursor measurement. Long term field trials have... [See More]
- Electrical Output: Analog Current; Switch / Alarm Relay
- Form Factor: Panel; Wall, Pipe
- Water Quality Parameters: Turbidity
- Display Type: Digital
from ABB Measurement & Analytics
The ATS430 is a compact, yet extremely robust turbidity sensor capable of measuring turbidity and total suspended solids (TSS) concentrations up to 4000 NTU or 100,000 mg/l. With a choice of hermetically-sealed stainless steel or titanium versions, each featuring scratch-resistant sapphire optical... [See More]
- Electrical Output: Analog Voltage; Analog Current; Switch / Alarm Relay
- Suspended Solids per Liquid Volume: 0 to 100000
- Water Quality Parameters: Suspended Solids; Turbidity
- Turbidity Range: 0.0 to 4000
from HF scientific
35 years of optical measurement expertise has allowed HF scientific to become the leader in regulatory reporting turbidimeters. The HF scientific MicroTOL Online Turbidimeter has been specifically designed to meet regulations of the EPA and ISO 7027. Features include fast and easy calibration,... [See More]
- Electrical Output: Analog Current; Switch / Alarm Relay
- Turbidity Range: 0.0 to 1000
- Water Quality Parameters: Turbidity
- Accuracy: 2 to 5
from Emerson Automation Solutions – Rosemount
The Model 56 Analyzer offers single or dual sensor input with an unrestricted choice of dual measurement combinations. The high resolution full-color display gives unsurpassed visibility and functionality for liquid analytical instrumentation. High resolution full-color screen: easily viewed process... [See More]
- Electrical Output: Analog Current
- Form Factor: Panel
- Water Quality Parameters: Turbidity
- Display Type: Digital
from KROHNE Messtechnik
Reliable sludge blanket measurement via optical sensor. The sludge level meter OPTISYS SLM 2100 features an accurate and reliable profile measurement of the sedimentation tank using an optical sensor which travels through all layers of the tank reading suspended solids concentration at the different... [See More]
- Electrical Output: Analog Current
- Form Factor: In-situ / Field
- Water Quality Parameters: Turbidity
- Display Type: Digital
from SWAN Analytical USA, INC.
Electronic transmitter/controller for the measurement of turbidity; for wall mounting. Measuring range: 0.000 to 200 FNU/NTU with a precision of +/- 0.003 FNU or 1% of reading. For the use with Swansensor Turbiwell. [See More]
- Electrical Output: Analog Current
- Turbidity Range: 0.0 to 200
- Water Quality Parameters: Turbidity
- Accuracy: 1
from optek-Danulat, Inc.
The Haze Control is a powerful, microprocessor-based photometric converter. The Haze Control is built off the C4000 design, but has been engineered specifically for high precision haze (turbidity) measurements. The Haze Control converter operates with the optek DTF16 (11°/90° scattered light) and... [See More]
- Electrical Output: Analog Voltage; Analog Current; Switch / Alarm Relay
- Form Factor: Panel
- Water Quality Parameters: Turbidity
- Display Type: Video
from Peak Process Controls Inc/Sigrist
In-line measurement in pipe sizes from 1" to 6" [See More]
- Electrical Output: Analog Current; Switch / Alarm Relay
- Turbidity Range: 0.0 to 2000
- Water Quality Parameters: Turbidity
- Form Factor: In-situ / Field
from Emerson Automation Solutions – Rosemount
COMPLETE SYSTEM includes single or dual input analyzer, sensor(s), and debubbler assembly. CHOOSE U.S. EPA METHOD 180.1 or ISO METHOD 7027 compliant sensors. RANGE 0-200 NTU. RESOLUTION 0.001 NTU. FULL FEATURED ANALYZER with fully scalable analog outputs and four fully programmable alarms. [See More]
- Electrical Output: Analog Current; Switch / Alarm Relay
- Turbidity Range: 0.0 to 200
- Water Quality Parameters: Turbidity
- Accuracy: 2
from SWAN Analytical USA, INC.
High Precision Nephelometer complying with ISO 7027 (EN 27027, DIN 38404) for the continuous measurement of low level turbidity in pure and ultra pure water. Features. Range: 0.000 to 100.0 FNU with a precision of ± 0.001 FNU or 1% of reading. Programmable automatic zero point measurement for... [See More]
- Electrical Output: Analog Current
- Turbidity Range: 0.0 to 100
- Water Quality Parameters: Turbidity
- Accuracy: 1
from optek-Danulat, Inc.
The Control 4000 is a powerful, microprocessor-based photometric converter. The advanced modular design enables precision process monitoring and control. The flexible C4000 is designed for optek ultraviolet (UV), visible (VIS), near-infrared (NIR) absorption-based and scattered-light based sensors. [See More]
- Electrical Output: Analog Current; Switch / Alarm Relay
- Form Factor: Panel
- Water Quality Parameters: Turbidity
- Display Type: Video