Chlorine analysis

The SC400 colorimeter from Orbeco-Hellige can test two ranges of free and total chlorine — 0.01-2.0 mg/l and 0.1-8.0 mg/l. Users can calibrate the unit against a prepared standard to ensure accuracy or improve results in a specific range. The handheld instrument has heavy-duty construction and waterproof capabilities for use in the field or lab. It has a large backlit display, a real-time clock, 16-point data storage, and a light shielding sample cell that eliminates the need for a separate light shield. This instrument comes with four sample cells, Powder Pack reagents, battery, manual, and carrying case. 800/922-5242; www.orbeco.com.

 

Speed control

The Model EC-2000 digital eddy-current speed control from DSI/Dynamatic is designed to upgrade any pump manufacturer’s existing eddy-current controls. The digital control is compact and includes a programmable keypad, eliminating the need to tune small potentiometers. The control allows local and remote operations. It includes selectable keypad monitoring, four programmable run presets, and 4-20 mA/0-10 volt inputs. 800/548-2169; www.drivesourceusa.com.

Related: Advances in Monitoring and Instrumentation

 

Power-quality protection

The smARTvar dynamic VAR compensation system from Arteche PQ delivers transient-free power to equipment that could be subject to failure from rapid load changes and fluctuations in system voltage. The system uses rapid-acting thyristor switches and a subcycle digital controller to improve the power-quality profile. The system uses either detuned or tuned filters. KVAR ratings ranging from 100 through 2,000 are available up to 690 VAC for low-voltage requirements. With the use of a step-up transformer, 15 kV class applications can be accommodated. 262/754-3883; www.artechepq.com.

 

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Pressure transmitters

The Preciseline from Keller America provides accurate, thermally compensated outputs for use in pump-control and pressure-monitoring applications with pressure ranges to 15,000 psi. It offers analog and digital outputs. Users can choose between 4-20 mA or VDC analog outputs while the digital output provides an RS485 connection that simplifies connection to a PC, user-rescaling of the analog outputs, and retrieval of both pressure and temperature data as provided by a piezoresistive silicon pressure element.

The RS485 output communicates via modified-Modbus protocol, allowing connection to Modbus-compatible control systems. Up to 128 Preciseline pressure transmitters can be individually addressed and connected via a single bus, allowing for simplified installation and central monitoring over multiple installation sites. 877/253-5537; www.keller america.com.

 

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Electrical enclosures

Polycarbonate enclosures from AC/DC Equipment Co. are designed for control panels or any other indoor or outdoor electrical application. Hinged and nonhinged enclosures are available with clear or opaque lids. All boxes offer mounting feet or mounting flanges, lockable stainless steel latches, adjustable aluminum back plates, and aluminum dead front doors. The UL-listed enclosures are UV resistant and carry NEMA Type ratings of 2, 3, 3R, 4, 4X, 5, 6, 6P, 12 and 13. 419/281-9120; www.acdcequipment.com.

 

Single network

The SAA-V Security Engine from Data-Linc is a bundled solution that supports wireless video and SCADA on a single high-speed (54 Mbps) network. The system allows virtually limitless control via user-selectable external program execution with notification on-screen, by voice, on the phone or by email. It scales up to fit a user’s video security and SCADA needs, integrating with industry standard networks, servers, databases and storage systems. It also offers OPC connectivity. 425/882-2206; www.data-linc.com.

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Alarm light

The Smarte Light from OmniSite acts as a normal alarm beacon but adds cellular notifications, data storage, and monitoring by the GuardDog Web interface. The light can be remotely controlled via computer or smartphone. It comes with a battery backup, antenna, and radio transmitter. Once an alarm has been activated, a cellular signal contacts customers via text message or email. 317/885-6330; www.omnisite.com.

 

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Chlorine analyzer

The RA-1000 residual chlorine analyzer from Eagle Microsystems continuously analyzes the residual concentration of free or total chlorine, chlorine dioxide or potassium permanganate in water or wastewater. A sample containing the target chemical is fed to an amperometric-measuring cell with a pH-buffering agent. A small current is developed within the cell, the level of which is directly proportional to the concentration of the target chemical within the sample.

A microprocessor-based digital controller processes the output of the cell and the residual value is displayed on an LCD readout. The digital controller transmits a 4-20 mAdc signal for recording or remote display. PVC spheres continuously clean the dissimilar metal electrodes of the cell, minimizing recalibration. Temperature compensation of the cell output is provided by a thermistor. All control and calibration functions are digital and adjustments are made via the four-pushbutton keypad on the face of the instrument. The controller display is a two-line by 16-character backlit LCD. 610/323-2250; www.eaglemicrosystems.com.

 

Remote monitoring

Link2Site Flex from Siemens offers wireless-to-Web monitoring and control to ensure that critical equipment information is remotely available. Capabilities include operating optimization, service notification, and real-time process data. Users can change operating set points, get notification of out-of-bounds operation, view trends, download process data for further analysis, and more, at the click of a mouse. 866/926-8420; www.water.siemens.com.

 

Vibration analyzers

The VSA series of handheld vibration analyzers from Datastick are designed for conditions-based and predictive maintenance of pumps, fans, and all forms of rotating and reciprocating machinery. DRS PC software is based on Excel, making it easy to create Microsoft Office reports and share data. All models record and display vibration FFT spectra in acceleration, velocity, and displacement, as well as acceleration waveforms. They also record and display overall vibration with color-coded ISO alert levels. Users can set their own alert levels specifically suited to their machines. 888/277-5153; www.datastick.com.

 

SCADA capability

TCOM panels from Orenco Systems provide low-cost SCADA capability for commercial and community water/wastewater/stormwater treatment systems. Compatible with virtually all sensors and motors, they provide data logging and real-time remote access and control.

Panels can function independently or can be networked, retaining their independent functions as backup. They can communicate over the Internet with a CAT5 Ethernet IP connection or through a phone line. IP-connected panels can send alarms via numeric pager or caller ID. Operators can access panels on the spot or via the Ethernet network connection or serial port. Touchscreen interfaces are available. 800/348-9843; www.orenco.com/controls.

 

Multiple process controls

The PCA 330 chlorine/pH/ORP/temperature analyzer-controller from Hanna Instruments combines critical process control parameters in one unit. The self-contained NEMA-protected instrument controls free and total chlorine from 0 to 5 mg/l while pH is regulated with two chemical-saving control modes. An available module sends measured parameters and alarms to a cell phone. The advanced Free and Total Residual Chlorine Analyzers continuously monitor wastewater and control the chlorine content in the 0 to 5 mg/l range with an accuracy ±5 percent of reading or ±0.05 mg/l, whichever is greater. 800/426-6287; www.hannainst.com/usa.

 

Process control software

LabLite process control software serves wastewater treatment facilities that have repetitive processes and testing requirements. Based on user rights, operators see only what they need to do their tasks. When an operator enters a result it is immediately compared to color-coded and named limits for fast recognition. If an operator makes a typing error or enters over-limit results, a red flag alerts them to trouble. The reporting tool enables any user to create professional reports and graphs. The program can be set up to capture instrument or SCADA data and include that information in reports. 888/954-5483; www.lablite.com.

 

Data reliability

The SCADAPack E controller from Telemetry and Remote SCADA Solutions, a division of Schneider Electric, provides DNP3 protocol on a scalable platform. Event-driven, time-stamped data storage used by the DNP3 communication protocol makes it suitable for critical wastewater treatment applications that require traceability. The layered protocol stores events in the remote controller until polled or reported, preventing loss of data when communication links go down. The system also reduces trips to the field. 888/267-2232; www.controlmicrosystems.com.

 

Gas detector

The OPIR-5, open-path gas detector from MSA provides continuous monitoring of methane and propane gas concentrations. The system includes an IR source and receiver that monitors methane in both the 0-5,000 ppm and 0-5 LEL range. A 0-2,000 ppm and 0-1 LEL meter for propane is available. The factory-calibrated detector requires little maintenance, save for a periodic visual inspection, test gas film check and cleaning of the windows to assure dependable performance. 800/672-2222; www.msanorthamerica.com.

 

Free chlorine sensor

FCL Series free chlorine sensors from Sensorex use amperometric technology for real-time measurement. The sensors are available in three measurement ranges: 0-2 ppm, 0-5 ppm and 0-10 ppm. A long-life design reduces maintenance cycles, lowering life cycle cost with less-frequent sensor membrane cap/solution replacement. The series uses a 4-20 mA isolated output signal compatible with programmable logic controllers and distributed control systems. It supports applications from small stand-alone, single-point measurement stations to large plantwide networks with control rooms that monitor numerous points of measurement. 714/895-4344; www.sensorex.com.

 

Multiple gas detector

The TA-2100 gas detector from Mil-Ram Technology eliminates false alarms and uses chemically selective sensors to detect toxics, LEL combustibles, oxygen and VOCs. The 3- or 4-wire detectors can detect hundreds of gases using several sensor technologies, including electrochemical, catalytic, infrared, photo-ionization and solid-state. The detectors use self-calibration, which adjusts monthly based on sensor life curve, reducing calibration frequency. 888/464-5726; www.mil-ram.com.

 

Electromagnetic metering

Built without moving parts to impede flow, the M2000 electromagnetic meter from Badger Meter delivers precise flow measurement for general-purpose detection. To eliminate remote testing and increase testing frequency, the meter can be field verification tested using a simple handheld device. Advanced processor-based signal conversion allows the meter to achieve accuracy of ±0.25 percent.

The meter is available with a hard rubber or PTFE (Teflon) liner. Other features include digital and analog outputs, NEMA 4X enclosure, bidirectional flow sensing and totalization, empty pipe detection, power loss totalization, compatibility with AMR products, nonvolatile programming memory, rotating cover, and enhanced security options. 800/876-3837; www.badgermeter.com.

 

Flowmeter

The ST100 Series thermal mass flowmeter from Fluid Components International continuously measures, displays and transmits an extensive array of parameters. An LCD display/readout offers a graphical, multivariable display of all process measurements and alarm status. The meter measures gas mass flow, total flow, temperature and pressure depending on the model family, and stores up to five unique calibration groups to accommodate broad flow ranges and differing mixtures of the same gas and multiple gases. 800/854-1993; www.fluidcomponents.com.

 

Turbidity probe

The OBS500 dual turbidity probe with antifouling from Campbell Scientific combines a backscatter sensor (for high turbidity) with a sidescatter sensor (for lower turbidity). It uses multiple antifouling methods to provide accurate measurements in biologically active water.

The probe incorporates CleanSensor antifouling to ensure accuracy. The method uses a shutter/wiper to protect and clean the optics. The method also includes a chamber filled with a biocide that continuously leaches out over the optics while the probe is in the closed position. A disposable plastic sleeve simplifies cleanup, while an optional copper sleeve can provide additional protection. 435/227-9050; www.camp bellsci.com.

 

Water-quality analysis

The Photometer V-2000 from CHEMetrics offers advanced water-testing technology with pushbutton control. Lightweight and field portable, the microprocessor-based LED colorimeter uses preprogrammed methods to measure 13-mm, 16-mm, or 1-in. cells in concentration, percent transmittance (%T) or absorbance (abs) modes. Updates and new programs are available via the Internet.

The unit can store up to 10 custom programs and can log 100 data points and download them to a printer or PC. Self-filling Vacu-vial reagent ampoules minimize contact with chemicals and provide reliable, accurate and safe water-quality tests in more than 50 preloaded parameters. Intuitive operation reduces the training time. 800/356-3072; www.chemetrics.com.

 

Power-quality meter

The SEL-735 power-quality and review meter from Schweitzer Engineering Laboratories Inc. is fully compliant with IEC and ANSI revenue metering standards. The meter, available in standard and advanced models, offers waveform capture, harmonic measurements, data logging, sample rates and power-quality reports. It integrates into Itron MV-90 billing software, DNP3, Modbus or SEL communication architectures. Multiple communication ports and protocols enable the unit to simultaneously communicate with up to 10 devices. 509/332-1890; www.selinc.com/p131.

 

Fluorometer

Turner Designs’ Little Dipper from Walchem is a single-channel, light industrial fluorometer that installs directly into process streams. It provides an analog signal output proportional to the concentration of the fluorophone being measured. The 24/7 sampling device can be used with data collection systems such as the WebMasterONE to monitor and control the level of treatment chemicals for cooling tower and boiler options. 508/429-1110; www.walchem.com.

 

Insertion flowmeter

The FPI Mag electromagnetic flowmeter from McCrometer is a multi-electrode hot-tap, full-profile insertion flowmeter, delivering a continuous total flow profile similar to a full-bore magmeter. It installs without interrupting service, dewatering lines, cutting pipe or welding flanges.

The meter’s compact insertion design fits in confined spaces with limited access, offers total accessibility, and is cost-effective for retrofits replacing flowmeters or in sites never metered before. The meter has a multi-electrode sensor design that compensates for variable flow profiles, including swirl, turbulence and low flow. It is available for line sizes from 4 to 138 inches and offers accuracy of ±1 percent. 800/220-2279; www.mccrometer.com.

 

Water-quality monitor

The iLR-32 current loop monitor from Telog offers simple, economical remote monitoring for gathering water-quality process signals for real-time alarms and trend data. The monitor integrates a 4-20 mA signal conditioner, data logger, cellular modem, antenna and battery. It can monitor a process signal, record the data and forward it to a host computer over the Internet where the information can be presented on a password-protected website.

The real-time alarm captures and forwards alarms via email or text messaging. Telog offers two supporting host applications for storing, presenting and archiving remote data: Telogers for Windows and Telogers Enterprise. The company also offers data hosting for users who prefer a cloud solution. 585/742-3000; www.telog.com.

 

I&I reduction

The SmartCover sewer monitoring system from Hadronex helps sanitation system operators continuously and remotely monitor water levels in the collection system. Using widely deployed level sensors at strategic locations, inflow and infiltration can be detected and reduced. The ultrasonic sensors provide continuous real-time water level histories remotely through low-earth-orbit satellite communications.

Unusual water levels are detected and alarmed directly to operators’ phones or pagers before an overflow, and long-term level histories provide a means to compare hydraulic loadings on the system as a function of precipitation. PowerPacks for the sensors last at least a year. All components are IP67 rated, and communications occur through a low-profile traffic-rated antenna. 760/291-1980; www.hadronex.com.

 

ISE analyzer

The modular S10 ion selective electrode, compressor and analyzer system from Electro-Chemical Devices includes the AC10 airblast spray cleaner designed for sensor self-cleaning and the multichannel C22 smart controller. The immersion/insertion-style sensor has a stainless steel body with a sensing element, a temperature module and a signal conditioner for the process variable.

Ion-specific cartridges are available for the measurement of ammonium, bromide, cyanide, chloride, sulfide, calcium, potassium and sodium ions and can be configured to measure pH, ORP, DO and conductivity/resistivity. The sensor cleaner helps maintain measurement accuracy in turbid water by preventing the buildup of biofilms and other soft coatings, decreasing sensor maintenance cycles and helping to cut plant operating costs. 800/729-1333; www.ecdi.com.

 

Straightforward SCADA

The ProControl Series 2plus from EOS Research puts independent control, data logging, alarm reporting and remote monitoring resources in a control panel with a single device that can be integrated into new or retrofit applications. Available with up to 78 industrially hardened inputs and outputs, it includes built-in communications (landline, cellular or Ethernet), onboard instrument power supplies, integrated data log memory, and relay outputs. Constantly monitoring and optimizing equipment operations, the SCADA unit informs users via fax, pager, text message or email. 603/332-2099; www.eosresearch.com.

 

Optical DO meter

The ProODO meter from YSI Inc. provides dissolved oxygen measurements in the field or lab BODs. The optical technology eliminates stirring, membrane changes, anode and cathode maintenance, and electrolyte replacement. The digital-based sensor houses the calibration, allowing the sensor to be placed on any ProODO instrument without having to calibrate again.

Calibrations are stable for many months. The meter has a graphic, backlit display and keypad with on-screen help functionality. Lab features include a small footprint and lab dock, USB connectivity, optional optical BOD probe, and free Data Manager desktop software. 800/897-4151; www.YSI.com/proODO.

 

Digital metering pump

Centrac Series digital metering pumps from Milton Roy offer an automatic degassing system and diaphragm integrity alarm. The degassing option, often used when pumping sodium hypochlorite, automatically bleeds the pump head for a short period at startup and at selectable frequencies during operation.

The automatic degassing system does not affect pump flow or capacity. During the bleed cycle, the fluid being bled is channeled to the discharge piping. The digital metering pump has a 30-year design life drive, 45,000-hour diaphragm life, and capacities from 0.06 to 1,100 gph with turndown flexibility. 215/441-0800; www.milton roy.com.

 

Spectroscopy analyzer

The Real Spectrum Analyzer continuous online spectroscopy analyzer series from Real Tech provides accurate, easy-to-use and affordable real-time process monitoring. Scanning across the spectrum of UV and visible light allows rapid detection of many common and emerging contami nants.

The analyzer can provide multicomponent measurement and can extract and isolate concentration information about one or more chemical components of concern even when an unknown mixture of other chemical components is also present. The analyzers continuously compensate for the drift and fluctuations of spectral analysis each time a reading is taken. 877/779-2888; www.realtech.ca.

 

Level transducer

The KPSI Series 705 level transducer from Pressure Systems has a double-thickness Teflon coating on the sensing area to reduce material penetrating the diaphragm. The nonfouling, submersible hydrostatic level transducer is used in highly viscous applications. The series is available in custom level ranges with analog outputs of 4-20 mA or 0-5 VDC. It is compensated over the temperature range of 23 to 122 degrees F with a static accuracy of ±0.25% FSO. 800/328-3665; www.pressuresystems.com.

 

Portable gas detector

The Model SG1 portable single-gas detector from Detcon uses electrochemical sensor technology to detect and monitor any of five gases: hydrogen sulfide, carbon monoxide, hydrogen, oxygen or sulfur dioxide. The gas detector is controlled by a microprocessor that allows for automatic zero-calibration and span-calibration setup. During normal operation, the backlit LCD screen continuously displays battery life and real-time gas concentration in ppm. Weighing 4.6 ounces, the unit is housed in an ABS enclosure with rubber sleeve for shock absorption. Minimum battery run time without alarm conditions is 4,500 hours. 888/367-4286; www.detcon.com.

 

CONDUCTIVITY TESTER

The Ultrapen PT1 conductivity/TDS/salinity tester from the Myron L Company offers the accuracy and stability of benchtop lab equipment with the convenience of a pen. The aluminum tester is fully potted for extra protection. Features include LCD display and one-button menu that enables the user to select from three commonly used standards: KCl, NaCl and Myron L’s Natural Water. 760/438-2021; www.myronl.com.

 

DISSOLVED OXYGEN PROBE

The LDO dissolved oxygen probe from Hach Co. uses luminescence technology to continuously monitor DO levels. The probe can be integrated with a variable frequency drive or PLC control system to regulate the amount of oxygen being injected. Applications include aeration tanks, collection systems, nitrification and denitrification, aerobic and anaerobic digesters and NPDES permit monitoring. The probe requires minimal maintenance and infrequent calibration. 800/227-4224; www.hach.com/wastewater.

 

Disinfectant measurements

The Q46H Monitoring System from Analytical Technology provides continuous measurement of residual chlorine concentration, pH and temperature and delivers data required for ensuring compliance with disinfectant contact-time requirements. The membrane-covered polarographic sensor measures either free chlorine or monochloramine directly without the addition of chemical reagents. The system has no moving parts, resulting in minimal maintenance. Three isolated 4-20 mA outputs are available for interface with DCS or telemetry systems. Digital communications are also available with Profibus-DP, Modbus or Ethernet options. The monitor also provides control options for pumps, valves and other hardware.

The unit comes with three SPDT relays and an option for three additional low-power relays. The system can be wall, handrail or panel mounted. Multiple sensor mounting options are available with either submersion or flowcell designs. The system is also available in an optional pre-assembled, prewired configuration to save on installation time and cost. 610/917-0991; www.analyticaltechnology.com.

 

Sludge level detector

Markland Specialty Engineering’s automatic sludge level detector can be used in dissolved air flotation tanks, sequential batch reactors, inclined plate clarifiers, decanting tanks and clarifiers. The meter’s four power levels automatically adjust for different concentrations of sludge, allowing it to find thick or thin sludge in wastewater treatment plants, and even the very light flocs of some drinking water plants. The detector can be used to find the level of any interface in a liquid, such as salt in brining operations. Its optical beam makes it suitable for location in obstructed or constricted areas. Its all-PVC probe is corrosion-free. Analog, digital and relay outputs are available. Automatic desludge control optimizes sludge density and water removal. 905/873-7791; www.sludgecontrols.com.

 

Bluetooth Ethernet

The 758-915 Bluetooth Ethernet Gateway from WAGO Corp. wirelessly transfers Ethernet protocols, such as PROFINET, Modbus or Ethernet/IP via Bluetooth 2.0. The system features a 400-meter range and license-free 2.4 to 2.48 GHz ISM band. Engineered for harsh conditions, the IP65-rated system uses M12 cables for automation connections and has a temperature rating of -22 to 149 degrees F. 800/346-7245; www.wago.us/btgateway.htm.


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