Drinking Water Turbidimeters – EPA 180.1 compliant and ISO 7027 compliant

In this post: US EPA vs EU drinking water turbidimeters, US EPA 180.1 Turbidimeters, ISO 7027 Turbidimeters Turbidity measurement has long been required for drinking water and potable water treatment and supply. Online turbidity instruments are used in water treatment process and distribution systems globally to measure turbidity or quantify the "cloudiness" or insoluble matter present in the drinking water. Many organic and inorganic items such as sand, silt, solids, precipitates, spores and bacteria found in drinking water contribute to the water cloudiness or turbidity. Turbidimeters are the instruments we use to help operators and treatment facilities quickly detect microorganisms and certain bacteria that could be harmful to the population even in low concentrations. This turbidity measurement instrument has to be accurate, sensitive and reliable to ensure that the drinking water is contaminant free. US EPA vs EU Drinking Water Standards The US EPA has long required turbidimeters and turbidity monitoring as found in the National Primary Drinking Water Regulations and has defined the standard US EPA Method 180.1 Determination of Turbidity by Nephelometry. NTU is the measurement unit used for EPA Method 180.1 and is defined as Nephelometric Turbidity Unit. This 180.1 white light turbidity method measures scattered white light at 90 degrees from the incident light beam. Online US EPA 180.1 process turbidimeters use these NTU measurement units. The EU Drinking Water Directive has identified turbidity measurement as one of several fixed monitoring parameters required for all water that is intended for human consumption. The European drinking water protocol used for turbidimeters is ISO 7027. This method uses the unit FNU which stands for Formazin Nephelometric Unit. In contrast to the US EPA method 180.1, the ISO 7027 method measures in FNU with an infrared light source. The infrared light source and FNU unit is widely used for turbidity instruments globally and often found as the unit for submersible turbidimeters. Online ISO 7027 process turbidimeters also are found with these FNU units as the primary units. Turbidimeters for US EPA Method / US EPA 180.1 The MicroTOL Turbidimeters from HF Scientific offers US EPA 180.1 method white light turbidity…

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Meter Calibration for Water Plants and Wastewater Plants
Wastewater Treatment Plant Instruments

Meter Calibration for Water Plants and Wastewater Plants

Meter Calibration for Water & Wastewater Plants What is involved in meter calibration of a water plant or wastewater plant? Calibration of water plant meters and wastewater  plant meters is simply: Applying a known standard to the meter Determining the accuracy as found compared to the standard Making the necessary adjustments to bring meter into the manufacturer’s stated accuracy and regulatory compliance Who should calibrate my water meters and plant instruments? Many in the industry prescribe to the methods from the ISA - International Society of Automation. The ISA certifies technicians and engineers to perform detailed instrument calibration and tuning. All of the standards, reagents, thermometers, signal generators and references are required to be calibrated to a standard regularly and traceable to NIST. Lab Trained Technician or Real World, Field Experienced Water and Wastewater Calibration Specialist? Additionally, you should have a field engineer or experienced technician who is not only familiar with meters and controls but also one experienced in water, wastewater treatment processes. In addition to the theory learned in the classroom and technical training, are they experienced with your particular process and not just in lab equipment? If you are in water or wastewater, how long have they been operating in water plants or wastewater plants? Are they also water or wastewater operators who know and understand your process and requirements? Theory in the class or experience gained from other process does not completely translate to the process of water treatment and wastewater treatment. Why should I have my water or wastewater meters calibrated? The simple answer is this. You'll save money and time today in chemical costs and process control. Water and wastewater instrument calibration also typically saves you money in instrument repair and downtime further down the road. For example, a commonly found 5% error in a water meter or wastewater meter found in a 1 MGD treatment process could result in 50,000 gallons per day either being over reported or under reported. If you are paying $ 3.95 per 1,000 gallons pumped and selling for $ 4.95 per 1,000 that is a cost…

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Instruments for Refrigeration and Cooling – Nivelco

Nivelco Process Instruments for Refrigeration and Cooling Process Updated October 11, 2014 with video Nivelco and MCE Process can provide all you instrumentation needs for refrigeration, ammonia cooling and related processes.   Get Quote The Nivelco Refrigeration and Cooling process diagram below illustrates a cooling technologic process commonly used in food, chemical and pharmaceutical industrial plants. On the process diagram can be seen the cooling compressor applying ammonia, the circulating pump system and the liquid separator tank with the proposed Nivelco devices. Nivelco Product Used Instrumentation of the compressor: The measurement of the pressure on the suction and pressure side is accomplished by NIPRESS DRC-3xxx type pressure transmitter The measurement of the temperature is completed by THERMOCONT TTJ-Sxxx temperature transmitters The suction side pressure transmitter performs the power control or the compressor, while the pressure side transmitter controls the condenser Instrumentation of the liquid-separator: The continuous level measurement is executed by NIVOCAP CTR-2xxx type capacitive level transmitter This device controls the feeding valve applying me UNICONT PMM-311 type controller The upper and lower failsafe switching is executed by NIVOMAG MKA-210 type level switches, As high level is reached, the compressor shuts off, while at low level the ammonium pump is stopped. Instrumentation of the liquid tank: The instruments and procedure is similar to the separator but a NIVOTRACK MTG or MTC-5xxx type level transmitter is recommended due to the high pressure (16 bar) Instrumentation of the cooling water: A continuous level measurement is accomplished with EchoTREK SGA-3xxx type ultrasonic level transmitter, the level in the tank is kept constant by the help of a UNICONT PMM-311 type controller by actuating a supplementary water valve The continuous conductance measurement is executed with an ANACONT LGK-2xxx type device, The conductivity or cooling water is permanently increasing due to the evaporation in the condenser, so at a predetermined value, the PMM-311 controller opens the emptying as well as the supplementary valve The low and high failsafe NIVOSWITCH RFM-401 type switches protect the pump and issue the alarm signals. Instrumentation of the condenser: The level control of the water tank under the…

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Vacuum vs Peristaltic Portable Samplers – ISCO, Campbell Scientific & Hach Sigma
Vacuum versus Peristaltic Portable Samplers for Water, Wastewater, Stormwater and Runoff. ISCO 6712 vs Campbell Scientific vs Hach Sigma SD900. What are the differences between vacuum based samplers and peristaltic samplers? What are the advanteges of vaccum samplers? What are the advanteges of peristaltic samplers?

Vacuum vs Peristaltic Portable Samplers – ISCO, Campbell Scientific & Hach Sigma

We receive a lot of questions about Vacuum vs Peristaltic Portable Samplers for Water, Wastewater, Stormwater and Runoff Monitoring.  We're looking today at three of the leading providers of water samplers and sampling equipment. These water samplers use different sampling technologies and pumps to get the job done: ISCO 6712 vs Campbell Scientific vs Hach Sigma SD900. See the full comparison table of Peristaltic Vs Vacuum Portable Samplers. Portable water samplers use either peristaltic pump or vacuum pump technology to obtain the liquid samples. Both portable sampler pump technologies are designed to quickly move most fluids from the source into the water sampler. Let's take a closer look at Portable Vacuum Samplers vs Portable Peristaltic Samplers So what do you see as the main differences between vacuum based samplers and peristaltic samplers? What advantages are most important for you with vacuum samplers? What are the most important advantages of peristaltic samplers for you? Let us know in the comments below. Contact / Get Sampler Price Quote >   Call: (844) 638-3757 Disclosure: MCE Process uses ISCO, Hach Sigma, Manning and Campbell Scientific and other water sampling equipment regularly in our consulting, repair and service work. store.mceprocess.com distributes samplers.

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Peristaltic vs Vacuum Portable Samplers
Vacuum versus Peristaltic Portable Samplers for Water, Wastewater, Stormwater and Runoff. ISCO 6712 vs Campbell Scientific vs Hach Sigma SD900. What are the differences between vacuum based samplers and peristaltic samplers? What are the advanteges of vaccum samplers? What are the advanteges of peristaltic samplers?

Peristaltic vs Vacuum Portable Samplers

We are often asked about the differences between peristaltic samplers and vacuum samplers for water, wastewater, stormwater and environmental monitoring. The table below explains the key differences in Peristaltic vs Vacuum Portable Samplers Learn more about our water samplers. *Source: published datasheets, manuals, specifications and public web information as of 11/8/13

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Ultrasonic Flow Meter and V-notch Weir for Wastewater Treatment Plant
Effluent Flowmeter - Ultrasonic

Ultrasonic Flow Meter and V-notch Weir for Wastewater Treatment Plant

Wastewater Treatment Plant Ultrasonic Flow Meter and V-notch Weir Get A Quick Quote >> Effluent flow measurement in wastewater treatment plants have traditionally been measured by weirs, flumes, time-transit flowmeters, partially filled pipe flow meters, insertion meters, magmeters and other flowmeter technologies. This wastewater treatment plant uses two 90 degree V-notch weirs along with an Ultrasonic Flow Meter system from MCE Process and Nivelco to accurately measure the treated waste water as it flows out of the plant into the receiving waters. But what if you have a flow meter application like this dual 90 Degree V Notch Weir or another primary flow device? MCE Process and Nivelco have you covered with a best of breed solution for any wastewater flow application. How Does a Ultrasonic Flowmeter with V-notch Weir Flowmeter Work? The two v-notch weirs act as the primary flow measurement devices for the system. Primary measuring devices like these weirs provide a reliable way of producing a measurable head (or water level) above the crest elevation. The V-notch weirs are are available in various angles and we typically fabricate them out of 1/4" or larger aluminum plate. We can even provide them as fabricated fiberglass weirs. The head 0r water level above the crest (or bottom of the V) of this 90 Degree V-notch weir is accurately measured by a Nivelco EasyTREK ultrasonic level transmitter. The integrated ultrasonic level transmitter and flow meter sends a scaled 4-20 mA + HART signal over two wires to the Nivelco MultiCONT multichannel display and process controller. The MultiCONT can act as a fully featured multichannel process controller in many applications but here it simply provides a remote display of the instantaneous level in feet along with flow in GPM (Gallons Per Minute). The MultiCONT process controller also provides the accumulated flow in both resettable and non-resettable totalizers. The 4-20 mA signal is then looped through the wastewater effluent sampler and back to the RTU and SCADA system for analysis and archiving. What's the angle of that V-notch weir? V-notch Weir Angles Range from 22.5 Degrees up to 120 Degrees 22.5 Degree V-notch weir 30 Degree V-notch weir 45…

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Partially Filled Pipe Flow Measurement
Flowmeter for Partially Filled Pipes

Partially Filled Pipe Flow Measurement

Get Started Today! Get Quick Quote >>  Partially Filled Pipe Flow Meter Partially Filled Pipe Measurement Is Now Cost Effective Accurate flow measurement in partially filled pipes Direct Burial Options for Low Installation Costs and Low Site Disturbance Cross Sectional Velocity Sensor and Ultrasonic Depth Sensor for High Accuracy Remote Reporting and Data Retrieval - Web, SMS and email via WebComm Collection Systems, Liftstations, Sewers and Stormwater Easily interfaced to SCADA sytems and telemetry systems Applications Include: Wastewater Collection System Flow Monitoring and Water Quality Monitoring Surface Water Flow Meters Stormwater Flow Meter Chemical Wastewater Flow Meter Paper Mill Process / Discharge Flow Meters Industrial Discharge Flow Meter (Trade Waste Meter) Dairy Lagoon Flow Meters and Dairy Waste Flow Meters Impeller Flow Meter Replacement Farm Turnout Flow Meters Irrigation Flow Meters Siphon Flow Meters Center Pivot Flow Meters Irrigation Flow Meters Septic Discharge Flow Meter / Aeration System Flow Meter The Challenges of Partially Full Pipe Flow Measurement Measuring flow in partially filled pipes provide unique challenges if you want to measure the flow both reliably and accurately. The challenge of of measuring flow in partially filled pipes is very common in water, wastewater, stormwater and industrial process applications. The pipes do not run completely full all the time but you still need to measure the flow of water in the pipe. From a traditional measurement perspective it is preferred to measure flow in a full pipe if at all possible. This can be costly and time consuming due to the construction or piping required to create a full pipe situation. One solution is construct a siphon tube but that can be expensive and timely. Others now offer magmeters for partially filled pipes. The technology is great but the upfront costs and cut in costs are not ideal for all applications. Still others offer other area velocity solutions that don't look at the entire profile so you end up with lower accuracy in the end. The real world requirements for a partially filled pipe flow meter requires us to look at other flow measurement options as it is often either difficult…

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Wastewater Effluent Sampling – Campbell Scientific Sampler BVS4300C

Reliable Wastewater Effluent Sampling Wastewater effluent sampling can be challenging for treatment plant operations. Every wastewater sample is valuable.  Missed samples and failures can lead to loss of data in reports, overtime for grabbing additional samples and even compliance issues.  Vacuum pump water sampling technology offers a significant improvement over peristaltic pump technology for water sampling. The Problem with Peristaltic Samplers Peristaltic type outdoor water samplers have traditionally had peristaltic pump tubing failure or peristaltic pump roller failures.  The second most frequent issue encountered with outdoor samplers are refrigerator failures. This particular municipal wastewater plant in Ohio had experienced multiple water sampler failures in the past and was looking for something simple and more reliable. The Solution with Vacuum Based Wastewater Effluent Samplers These BVS 4300C water samplers from MCE Process and Campbell Scientific replaced the failed ISCO Automatic Water Sampler units at a wastewater plant in Ohio. This water reclamation facility really wanted a more reliable sampler for wastewater influent and wastewater effluent. The Campbell Scientific BVS4300C Stationary Automatic Water Sampler was the wastewater sampler of choice.  The reliability of vacuum wastewater samplers along with the reduced maintenance was the real determining factor.The BVS4300C provided the stationary automatic wastewater sampler needed in a outdoor heavy duty package. Why Go With Vacuum technology to replace the Peristaltic ISCO sampler? Vacuum Samplers have clear technology benefits over peristaltic pump samplers Higher Accuracy and Consistent Sample Volumes Rapid Transport velocities = more-representative samples Less disturbance of sample No roller contact with tubing = less-frequent maintenance Cross contamination of the samples are greatly reduced by a positive pre and post purge   Get started with wastewater effluent samplers Discover More Vacuum Sampler Advantages Learn more about wastewater sampling at http://mceprocess.com/samplers/

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Multipoint Temperature Measurement for Water Tanks
Nivelco Thermopoint Multipoint Temperature Transmitter for Water Tanks, Storage Tanks and Reservoirs

Multipoint Temperature Measurement for Water Tanks

Measuring Multiple Temperature Points Inside Water Tanks, Reservoirs and Storage Tanks Operators and water systems have been using different technologies and tank mixers to maintain the highest quality drinking water in water towers, reservoirs and storage tanks. Tank mixers and aeration can help with disinfection byproduct (DBP) removal and disinfectant control. You know thermal stratification exists in your tank but what if you wanted to know the realtime temperatures at several points inside your water tank or reservoir? We wondered what affordable solution was availabe to monitor water tower temperature and we found a good water tank temperature solution from Nivelco. The Nivelco THERMOPOINT can monitor temperatures in water towers, water tanks and reservoirs up to 100' in depth. The Nivelco THERMOPOINT is multipoint temperature measurement system with ultimate flexibility and communication options. The THERMOPOINT TM from Nivelco provides: Up to 15 temperature measurement points per probe Up to 15 probes per system for a total of 225 measurements per loop. Up to 100' length probes Rigid or Flexible Probe Configurations ± 0.5 °C (± .9 °F) Accuracy 2 wire transmitter for quick and easy wiring (12-30 VDC) Flexible mounting locations: Thousands of feet between probes and the transmitter / outputs Wireless transmitter option available - Up to 770 feet (235 meters) outdoors open air range (nominal) Solar Power and Battery Power option available Replaceable sensors - add and replace as required 1 1/2" NPT Connections for Flexible Cable Probes, 1" NPT for Rigid Probes Tell us about your water tank temperature application below, visit the temperature transmitter page or Contact Us to get started.

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48 Hour Meter Delivery and On Site Install
Wright State University and City of Fairborn

48 Hour Meter Delivery and On Site Install

MCE Process is committed to meeting our customer needs and responding on their timeline.  Sometimes this means going the extra mile with a quick delivery and install. And by quick, we mean 24 hour delivery and next day installation.   The Challenge We were contacted by Wright State University at 2:30 on a Thursday afternoon and advised they needed a flow meter on a 12” potable drinking water supply from a public utility. The other important detail that was quickly revealed was the flow meter had to be on line and running by Sunday morning at 7:00 am. Experience and confidence in our solutions and  our team at MCE Process prepared our reply without flinch or hesitation, "We'll be there and have you up and running by Saturday". OK we did gasp just a bit! Our Solution We immediately went on site and assessed the measurement application. Cutting into the line and installing a meter would not fit into the time line for this installation. An insertion paddle wheel style meter simply wouldn't do for the accuracy required or the piping configuration. We decided on a Dwyer Instruments transit time ultrasonic clamp on flow meter for the application. This included the Dwyer UXF2-11P1 Ultrasonic flow converter, SX3-D0 Ultrasonic Flow Sensors and a pair of SX3C-2B Sensor Cables. Meter accuracy was also critical to this 48 hour application. Wright State needed to have a highly accurate meter accepted for billing purposes by the utility. We coordinated with the City of Fairborn and determined a Dwyer meter would meet the application and satisfy the billing requirements. By Saturday afternoon we had the meter installed and accurately measuring flow. A 48 hour meter delivery and installation! We not only sell great products and solutions, we partner with great suppliers, field engineers and team members who understand that normal deliveries do not always fit the in the real world time loop. We always appreciate having adequate time to work and resolve tough installation issues. However, MCE Process is on your side even when time is not. Our onsite field service engineers will travel to your application…

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