Monitoring and Instrumentation

Monitoring and Instrumentation
Model 7720 Transit-Time flowmeter from Accusonic Technologies

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Multiple-path flowmeter

The Model 7720 Transit-Time flowmeter from Accusonic Technologies addresses difficult installation requirements common to large UV disinfection systems. The maximum 10-path capability allows the unit to measure with accuracy and repeatability, even in the presence of distorted flow profiles. The pipe section length required for installation is less than for other flow measurement technologies, according to the manufacturer. Measurable pipe and channel sizes range from 8 inches to 600 feet. Using multiple-path, chordal, transit-time technology, accuracy is ± 0.5 percent in full pipes and ± 2.0 percent in partially full pipes and channels. 508/273-9600; www.accusonic.com.

 

Data management

Antero version 5 from AllMax Software is a user-friendly maintenance data management program that bridges the needs of performance, security and data governance with focus on accountability and reducing maintenance costs and downtime. It helps plants comply with strict industry and regulatory requirements. The software includes a Microsoft SQL database engine, which is scalable and capable of handling more records and data than previous versions.

Other benefits include the ability to share information among multiple facilities, Windows login for automatic user validation, and group security. A work order section allows for data associated with work orders and multiple equipment/task combinations to be generated at one time. The work order builder enables improved data flow from setup to creation. Features include a gallery for storing images and attached documents, newly redesigned reports, and an in/out of service history section for better tracking of maintenance and related data. 800/670-1867; www.allmaxsoftware.com.

 

Chemistry modules

ATI gas phase chemistry modules from Analytical Technology are online monitoring systems that use air-stripping methodology. This method is designed for sample streams that are highly contaminated with solids or biological activity. Modules for dissolved oxidants employ iodometric chemistry to prepare the sample stream for measurement. Modules for non-oxidizing chemicals use pH adjustment of the sample before measurement.

After chemical addition, the air pump provides a continuous stream of ambient air to the reactor assembly to release the analyte from the water phase and into the gas phase. A special gas phase sensor detects the chemical concentration in the air stream. By using air-stripping, the sensor is removed from the liquid phase, preventing contaminants from fouling the sensor. The technology requires less maintenance. Modules are available with total residual chlorine, residual sulfite, dissolved sulfite, and potassium permanganate monitors. 800/959-0299; www.analyticaltechnology.com.

 

Digital pressure gauge

The PG10 digital pressure gauge from Automation Products Group (APG) for indoor/outdoor use is IP65 rated. The unit features a 5.5-inch display casing, a full five-digit display with 0.68-inch-tall characters, and a 270-degree digital dial or radial bar graph that shows a user-selectable pressure range from 0 to 100 percent. Four large setup buttons provide at-a-glance readability. Standard features include tare, peak hold, maximum-minimum readings, user-selectable units of measure, and an auto-off timer.

Options include two solid-state relays or SPDT mechanical relay outputs for basic to semi-advanced automation. With an operating temperature range from 0 to 160 degrees F, the unit offers ±0.25 percent accuracy of full scale, and features pressure ranges from vacuum to 500 psi, or 0 to 10,000 psi. Outputs are 0-2 VDC for battery-powered units, 4-20 mA for loop-powered units, and 0-5 VDC for externally powered units. Data logging provides local access to the latest 60 readings. 888/525-7300; www.apgsensors.com.

 

Gas detector

The Jerome J605 hydrogen sulfide analyzer from Arizona Instrument can read 3 parts per billion with a resolution of 20 parts per trillion. The unit is housed in a light, ergonomically designed case. Gold film technology extends unit life. With the addition of mercury vapor or hydrogen sulfide gas, a thin gold film undergoes an increase in electrical resistance proportional to the mass of mercury vapor or hydrogen sulfide in the sample. During normal sampling in range 1 or 2, an ambient air sample is diluted by the flow system at a ratio of 100:1. When sampled in range 0, undiluted air samples are drawn across the gold film sensor. 800/528-7411; www.azic.com.

 

Sensors and transmitters

ProSense pressure sensors and temperature transmitters from AutomationDirect offer high operating and burst pressures for hydraulic systems, biotechnology, and other applications. Available in zero to 10V and 4-20 mA output models, the sensors are IP68/IP69K rated at 5,000 psi.

TTD temperature transmitters, for use with RTD probes, are available in three temperature ranges. Equipped with M12 quick-disconnects for fast wiring, they provide high-accuracy two-wire or three-wire 4-20 mA signal output. The IP67-rated units convert low-level RTD temperature probe output signals to high-level analog signals, making them appropriate for long-distance transmission. 678/455-1845; www.automationdirect.com.

 

Sludge blanket meter

The CBX sludge blanket meter from Cerlic Environmental Controls uses a near-infrared (NIR) suspended solids sensor to measure solids concentration as a probe is lowered into clarifiers. The operator enters concentrations for blanket and fluff, and the meter outputs the depth at which concentrations are reached. Features include 4-20 mA output or Profibus DP signal. The stainless steel meter will operate at temperatures down to -4 degrees F. The sensor is triggered by a rake hitting a limit switch. Also available is a portable sludge blanket tracker that measures suspended solids and has a pressure sensor to show liquid depth. 404/256-3097; www.cerlic.com.

 

Phosphate analyzer

The CA-6 online analyzer from Electro-Chemical Devices uses colorimetric analyses to accurately measure phosphate and total phosphate levels. It is available in models measuring phosphate at 0-0.5 mg/l, 0-50 mg/l, or 0-200 mg/l and total phosphate at 0-2.0 mg/l, 0-20 mg/l, or 0-100 mg/l. The unit weighs less than 40 pounds and can be wall-mounted or set on a bench using the optional benchtop stand.

After the sample, waste and reagent lines have been connected to the unit and provided with power, the analyzer begins its preprogrammed analysis sequence. It is available with up to four channels (optional), each from a separate sample point. A user-friendly menu structure and touchscreen interface make it easy to access information or customize analyses. Two separate compartments isolate liquid and electronics. The unit is enclosed in an epoxy powder-coated, cold-rolled steel cabinet. 800/729-1333; www.ecdi.com.

 

Speed switch

The UDS1000 unidirectional speed switch with 907B sensor and wrap from Electro-Sensors monitors high-service pump shafts to protect against reverse rotation. The unit constantly monitors a shaft to ensure that it is turning in the correct direction. Relay contacts in the unit can be used to electrically lock out the starting circuit of the pump to prevent accidental startup during reverse rotation. It continuously monitors incoming pulses from the sensor and magnetic wrap. A failsafe relay output is electrically interlocked directly to the motor starter circuit for the pump. If the slightest reverse rotation of the pump shaft is detected, it disables the pump starting circuit, preventing damage. 800/328-6170; www.electro-sensors.com.

 

Stationary sampler

The Liquistation CSF from Endress+Hauser is a stationary sampler for fully automatic sampling, distribution and storage of liquid media. It is based on the Memosens Liquiline platform. The sampler features four housing materials, two-door housing for safe sample preservation, and a sample compartment with inner shell and forced-air cooling.

It has clear menu guidance, a comfortable navigator and a large display. The unit has split bottle trays for safe transport. No tools are required for cleaning and maintenance. It has an integrated data logger and service interface for data transmission. Sample intake is available from the side or the bottom. 888/363-7377; www.us.endress.com.

 

Infrared detector

The Model IR700 infrared carbon dioxide point detector from General Monitors provides complete control room status, control capability for monitoring at the ppm level and does not require routine calibration. Features include a fail-safe design, heated optics to eliminate condensation, a dirty optics indicator and microprocessor-based technology to continuously monitor CO2 at a range of 0-5,000 ppm. 866/686-0741; www.generalmonitors.com.

 

Meters and probes

HQd meters and IntelliCAL probes from Hach are designed for demanding environments. IP67 rated portable and benchtop meters measure influent, effluent and process streams. Large, bright backlit displays are easy to read night or day. The meters also offer internal data storage and the ability to enter user IDs and sample IDs to ensure data integrity.

Field and laboratory probes measure pH, dissolved oxygen (DO), conductivity and ORP. ISEs are also available to measure ammonium, ammonia, chloride, fluoride, nitrate and sodium. Because all calibration data is captured and stored on digital probes, smaller facilities can use a single multiparameter meter to perform multiple measurements. All meters and probes can be ordered individually or as prepackaged kits that include buffers, electrode stand, and field cases. 800/227-4224; www.hach.com/hqdguide.

 

Multigas detector

The G460 compact multigas detector from GfG Instrumentation detects up to six gases simultaneously. Installed sensor options include infrared (NDIR) for CO2 and PIC for VOC measurements. The unit offers automatic calibration, one-button operation, top-mounted display and interchangeable battery packs for up to 25 hours of continuous operation. The rechargeable NiMH battery pack can be equipped with flashlight LEDs.

The large, high-resolution top display can be flipped 180 degrees by pressing two buttons. The watertight design incorporates an impact-proof, rubberized housing to meet tough requirements. The data logger records over 1,800 gas concentrations and alarms, and the data can be downloaded to a PC for viewing, storage and evaluation. A detachable, self-powered pump is available for sampling confined spaces before entry. It allows operation of the unit in diffusion or sample-draw modes. 800/959-0329; www.gfg-inc.com.

 

Chlorine sensor

The OPTISENS AAM 1100 sensor from KROHNE is a ready-to-use system that measures free chlorine with flow monitoring and automatic temperature compensation. The system includes automatic sensor cleaning (ASR), flow-independent measurement above 30 l/h, simple calibration, and optional pH compensation for fluctuating pH values above 7.5. The potentiostatic chlorine sensor in the system has no membrane and so no pores to become clogged by biological fouling. The unit has two gold electrodes, and the cleaning feature automatically cleans them daily to remove any coating. 800/356-9464; www.krohne.com.

 

Autonomous logger

The DCX-25 PVDF autonomous water level logger from Keller America records water depth (pressure) and temperature over long periods. The housing is made of polyvinylidene fluoride and the sensing diaphragm is available in Hastelloy C-276 or titanium 6AL-4V. This combination offers long life and allows for extended exposure to aggressive media. The battery-powered data collector integrates a pressure sensor, electronics and battery into one 25-mm-diameter housing. The electronics employ microprocessor technology, which gives high accuracy and resolution for the pressure and temperature signals. The built-in pressure sensor is mathematically compensated for all linearity and temperature errors.

The data collector is secured by a suspension cable and immersed in the media to be measured and must be covered for data readout. The logger opens easily, allowing access to the replaceable battery and the interface connector for configuration and data download. The included software provides the capability to retrieve stored data and customize the instrument as needed. Users can configure it to record at fixed time intervals, using fixed or event-based start times in user-selectable measurement units. 877/253-5537; www.kelleramerica.com.

 

Fixed gas monitor

The OLCT 200 fixed transmitter from Oldham is suited for gas monitoring in remote, hazardous or difficult-to-reach locations. It is designed for use with multiple gas detection technologies, including electrochemical sensors (H2S, Cl2 and O2) and infrared (IR) sensors that provide detection of combustible gases, such as methane, in more severe environmental conditions where the presence of poisons like H2S could harm the use of a catalytic cell.

The unit can be configured for two-wire and three-wire 4-20 mA analog output, Modbus RU digital output, HART, and wireless communication. Features include optional onboard programmable relays, a durable explosion-proof housing to resist corrosive agents, and a cold-climate heater. A completely wireless system, the self-contained transmitter includes onboard battery power and wireless data transmission for most of the unit’s gas sensors. The 900 MHz or 2.4 GHz wireless communication is compatible with all of the company’s WX series alarm controllers and MPSIV mobile monitoring system. 800/338-3287; www.oldhamgas.com.

 

Waterproof colorimeter

The SMART3 colorimeter from LaMotte features a waterproof housing, a library of over 75 preprogrammed tests, and USB communications. The expanded backlit display is loaded with seven languages. The unit has a removable clear cell that protects the optical system from the elements and is IP67 compliant. Users can select from a scrolling menu of preprogrammed test factors or set up their own groupings for routine analyses.

Operators can add new user tests or download them from the manufacturer. Time- and date-stamped test data can be stored in the 500-test-capacity data log. The USB port permits data transfer to a PC and powers the rechargeable NiCad battery. The system includes a USB cable, power adapter, six glass vials, and a special adapter for holding COD vials or square cuvettes. 800/344-3100; www.lamotte.com.

 

Plug-and-play analyzer

The plug-and-play Krypton K series free chlorine analyzer from Kuntze Instruments uses automatic sensor cleaning (ASR) electrode technology, reducing maintenance and calibration demand. The analyzer replaces the need for reagents or membrane refurbishment. There is no waste stream or moving parts. The unit includes two PI controllers via a 4-20 mA output and two relays. Also available in chlorine dioxide, ozone and hydrogen peroxide. 724/339-8510; www.kuntze instruments.com.

 

Portable sludge level detector

The handheld Sludge Gun from Markland Specialty Engineering can be used to find liquid sludge levels in primary and secondary clarifiers, DAF units, settlement tanks and lagoons. Power intensity is customized to detect clear liquid surfaces or sludge densities ranging from light flocs to thick blankets. No calibration is required.

A spring-loaded trigger turns on the gun, and a thumb-adjustable sensitivity control compensates for thin or thick sludge. A tone is emitted as the optical probe enters the bed, varying in volume and pitch depending on concentration of solids. By observing the depth markers on the cable, the operator establishes the location of the sludge blanket and the overlying unsettled cloudy layer. After use, the cable is wound at the self-storing spool at the front of the gun. 905/873-7791; www.sludge controls.com.

 

Online analyzer

Applikon DI Alert online analyzers from Metrohm USA monitor more than 20 contaminants. Colorimetric or ion-selective techniques allow for analysis of ammonia, calcium, chloride, free and total chlorine, copper, iron, nickel, nitrate, phosphate, silica and zinc. Other parameters are available on request. Users connect the sample and reagent lines, connect the power, and have results in less than two hours. 800/727-6768; www.metrohmusa.com/applikon.

 

Digital metering pump

The Centrac digital metering pump from Milton Roy is an integral component of a process controlled by SCADA systems. The unit offers high turndown flexibility with ± 0.5 percent steady-state accuracy over the full range. An optional advanced diaphragm integrity alarm gives indication of any issue before the process or pump is compromised. The unit is offered in a wide range of wetted materials. Models are available for capacities from 0.06 to 1,100 gph. Pump performance is not affected by changes in discharge pressure. The pump has a 45,000-hour diaphragm design life. 215/441-0800; www.miltonroy.com.

 

Odor monitoring

The OdoWatch 3.0 real-time odor monitoring system from Kruger USA helps wastewater treatment plants prevent odors before they become a problem. EPA-approved AERMOD modeling follows the odor plume over complex terrain.

Municipalities receive alerts when odors from a plant approach areas outside the predetermined parameters. Plants can then prioritize the processes that need the most attention so that upgrades can be planned. Plants can reduce the use of chemicals to dose odor sources and get more odor control by dosing only when needed. OdoSulf uses real-time, continuous views of the local impact of H2S. 919/677-8310; www.krugerusa.com.

 

Single-channel monitoring

The single-channel gas alarm from Mil-Ram Technology is for toxic, oxygen, VOC and LEL combustible gas detection. The unit includes an integrated strobe and horn for a visual/audible alarm.

Features include off-site sensor calibration to replace sensors in the field without recalibration; auto gas calibration; non-intrusive, hands-free magnetic switches; self-calibration that adjusts span monthly based on the sensor life curve; 12-character by two-line LCD display; operating voltage of 110/220 VAC; output of 4-20 mA; and optional Modbus RTU that allows multidrop installations. 888/464-5726; www.mil-ram.com.

 

Radio analysis SCADA

ScalableSCADA from Revere Control Systems includes comprehensive radio path analysis and testing services that assure paths, elevations, and frequencies for all sites in the network will meet operational standards. Such services help in the selection of the best available communication technology, tower placement and design, helping to achieve maximum system efficiency and effectiveness.

The system also features non-proprietary hardware; UHF, VHF, 928/953 MHz, MAS, spread spectrum, or cellular communication technology; I/O only to PC-based units; scalable without limits; ISA-CCST certified technicians; and CSIA certified. 800/536-2525; www.reverecontrol.com.

 

Pen tester

The ULTRAPEN PT1 tester from the Myron L Company tests conductivity, TDS and salinity. The pen features the accuracy and stability of benchtop lab equipment with the convenience of a pen. Constructed of durable aircraft aluminum, the pen is fully potted for extra protection with an easy-to-read LCD and one-button functions. Users can select from three solution standards: KCl, NaCl and the company’s 442 proprietary standard for natural water. 760/438-2021; www.myronl.com.

 

Detector tubes

Gastec pumps and detector tubes from Nextteq measure gases and vapors in more than 600 applications. The lightweight, one-stroke piston action of the pumps provides reliable operation with no partial samples. The thermal ring provides on-the-spot measurements of ambient temperature for tests that require temperature correction. The direct-read length of stain tubes offers distinct lines of demarcation for easy viewing. 877/312-2333; www.nextteq.com.

 

Remote monitoring

The I-Link cellular RTU from SJE-Rhombus is a remote monitoring system using an integral cell-based communications gateway to provide two-way communication for monitoring lift stations and other pumping applications. The system consists of a hardware interface and customized data access through the I-Link Web portal. The Web portal provides real-time system information, including monitored equipment, administrative services, report generation and alarm notifications. The system is available in two models for new or retrofit applications.

I-Link sends custom alarm notifications and descriptions to a cellular or landline phone, via SMS text messaging or email text. Users can view data on demand and pull reports, trend charts and data tables from an unlimited historical database. Data can be exported to other applications, such as Excel, for further analysis or reporting. 888/342-5753; www.ecosmartpanel.com/ilink.html.

 

Two-way communication

StationComm from Smith & Loveless is a cellular-based automated alarm texting system that provides two-way communication between users and pump stations. Pump station operators can text pump stations to remotely operate and maintain the control panel. Supervisors receive simultaneous messages while the unit sends sequential service messages to as many as 10 operators. The system automatically texts operators with various alarm messages, including pump failure, prime failure, high water and power failure. Various status checks include wet well level, pump run time, station temperature, flow rate and motor amperage. 800/898-9122; www.smithandloveless.com.

 

SCADA software

The Verbatim SCADA system from RACO Mfg. and Engineering Co. ensures continuous monitoring, reporting, data logging and alarm autodialing while offering on-demand remote access. The “report by exception” function ends the need to constantly poll verbatim RTUs — operators only get called when there is an alarm. The system is scalable, making fleet expansion easy. It is also available for Windows operating systems. 800/722-6999; www.racoman.com.

 

TOC analyzers

TOC-L series total organic carbon analyzers from Shimadzu Scientific Instruments feature a wide sample range from 4 μg/l to 30,000 mg/l, making them suitable for ultrapure to highly contaminated samples. Consisting of four models, including PC-controlled and stand-alone versions, the units use a 680 degree C combustion catalytic oxidation method to analyze organic compounds. The series features automatic sample acidification and sparging, and an automatic function that reduces sample salinity, acidity and alkalinity, extending the life of catalysts and combustion tubes.

The analyzers feature variable syringe sizes when the sample volume is limited. A no-maintenance Peltier cooler used for maximum water vapor removal and high-precision mass flow controllers ensure uninterrupted carrier gas for accurate analysis. An onboard air purifier may eliminate the need for high-purity air during testing. Optional salt kits are available. The ASI-L autosampler can use three vial sizes for various applications, while the smaller OCT-L autosampler can use any vial size for up to 8 or 16 samples. 800/477-1227; www.ssi.shimadzu.com.

 

Thermal mass flowmeter

The Chlorine-Trak 760S thermal mass flowmeter from Sierra Instruments is designed to measure solution for chlorine injection processes. Made of Kynar polyvinylidene fluoride resin (PVDF), the meter is corrosion and chemical resistant at both ambient and elevated temperatures. PVDF also is abrasion and flame resistant. The meter has a flow range up to 300 scfm in a 4-inch body. Features include digital display with instantaneous and totalized flow and digital Modbus RTU option for PLC/DAQ integration and analog 4-20 mA output. 800/866-0200; www.sierrainstruments.com.

 

Multiparameter monitoring

The YSI IQ sensor net system from Xylem Analytics offers fast and flexible multiparameter wastewater monitoring. The single system provides measurements of pH/ORP, conductivity, dissolved oxygen (DO), temperature, turbidity/TSS, ammonium, nitrate and chemical oxygen demand (COD). Up to 20 sensors measuring any combination of 16 parameters can be monitored, logged and transmitted from a single controller and displayed from one, four or multiple sensors simultaneously.

The system eliminates sample preparation and removes lag time between sampling and measurement. Minimal maintenance is required. Plug-and-play connection to any IQ sensor makes the unit expandable for more sensors. 781/937-4100; www.xylemanalytics.com.

 

Residual chlorine analyzer

The RC400G residual chlorine analyzer from Yokogawa uses a polarographic system with rotating platinum electrodes to provide continuous online measurement of residual chlorine concentration. The unit uses microprocessors. Automatic sensor self-diagnostics (zero point, slope, response) can be taken with one-touch calibration.

The output range can be set in the field when the span is 1 mg/l or more. Remote switching two-range capability is available. A line-segment function is available for the output signal. Waterjet cleaning can be applied. The unit offers easy-to-clean cell construction and simple verification of applied voltage/current characteristics between electrodes. 800/888-6400; www.yokogawa.com.



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