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Monitoring and Instrumentation products

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Ortho-phosphorous analyzer

The single-sample-line, single-parameter ChemScan mini OP analyzer from ASA Analytics analyzes ortho-phosphorous. Large orifices in the sample flow paths seldom plug, and the analyzer operates for three months between reagent service. Wear items replace in less than five minutes. Sample blank analysis on every cycle simplifies set-up, reduces error, and eliminates calibration standards. 800/665-7133;


Bourdon tube gauge

The Model 1279 bourdon tube Duragauge pressure gauge from Ashcroft Inc. has Model 100 or 200 diaphragm seals for long life and reliability. The instruments have a stainless steel movement and as-welded 4.5-inch solid-front phenolic case. They are available in dry, liquid-filled, hermetically sealed, weatherproof, or PLUS! (steadies the pointer and protects the movement from vibration and pulsation without a liquid fill). Numerous process connections, wetted materials, and optional flush port enable the gauge-seal combination to work in most caustic media up to 5,000 psi. 800/328-8258;



The lightweight and field portable V-2000 microprocessor-based LED colorimeter from CHEMetrics Inc. is preprogrammed to measure 13-mm, 16-mm, or 1-inch cells in concentration, percent transmittance, or absorbance modes. Its interface/ output logs 100 data points with date/time tags, then downloads them to a printer or computer. Self-filling Vacu-vial reagent ampoules provide accurate water-quality tests for more than 30 analytes including ammonia, chlorine, sulfide, and COD. 800/356-3072;


Microbial respirometer

The automatic BI-2000 aerobic/anaerobic respirometer from Bioscience Inc. does BOD and bioremediation testing, biodegradability assessments, and toxicity screening studies of water, soils, sludges, and compost. Windows-based operating software adds flexibility with more reactor sizes and testing configurations.

The device continuously and precisely resupplies oxygen needed to sustain bioreactions in liquids or semi-solids even over extended periods in sealed reactors. It measures aerobic carbon dioxide evolution and anaerobic gas evolution, and does long-term OECD biodegradability testing from 50 to 104 degrees F. The unit sets up easily and has individual reactor control including stirring rate. 800/627-3069;


Radar water-level sensor

The CS475 sensor from Campbell Scientific mounts above the water, then uses radar (short microwave pulses) to measure the distance from the sensor to the surface. Changes in water levels from 2 inches to 65 feet calculate depth, flow rate, or volume. The sensor never contacts the liquid, has no moving parts, operates at -40 to 176 degrees F, and it is compatible with all SDI-12 output protocols. 435/753-2342;


Pump control package

The FlowStation out-of-the-box pump controller from Control Microsystems Inc. has a built-in Web server and user-friendly configuration interface for stand-alone installations or SCADA networks. It has event and alarm logging, remote notification of alarms via e-mail or system management server messaging, BlackBerry interface, wireless communication, and touchscreen options. Optional TelePACE ladder logic and C++ programming extend flexibility. 888/267-2232;


Smart float

The mercury-free Opti-Float level detector from Cox Research and Technology uses fiber optic cable to transmit a beam of light from an LED in a remote transceiver down to the float. The presence or absence of light activates a relay, which operates other devices. The dual DIN (top hat) rail-mounted transceivers connect to two floats and are safe in explosive areas such as wastewater pump station wet wells. The float, cable and UL/CSA-listed transceiver are tested to more than one million operations. 225/756-3271;


Ozone Detection

The A-21ZX, a digital ozone sensor from EcoSensors Inc., provides portable ozone detection from zero to 10 ppm. The unit has a rechargeable eight-hour operation cycle, meets CE requirements, and can be equipped with a Model OG-3 ozone calibration source in 0.1- or 1.0-ppm output. 800/472-6626;


Pump station monitor

The LevelMaster stand-alone liquid-level monitoring system from EPG Companies Inc. monitors and displays liquid levels in side slope risers, wells, tanks, sumps, reservoirs, and settling ponds. The system has the CH1000 liquid-level meter and sensor, and built-in thermostatically controlled panel heaters to maintain minimum temperature, eliminating condensation and optimizing accuracy. Options include intrinsic safe circuitry, level sensors with additional surge suppression, Tefzel sensor cables, and a portable 12-volt version. 800/443-7426;


Gas flowmeter

The automated GF90 mass flowmeter from Fluid Components International LLC continuously measures and controls chlorine dispensing for optimum water purity. Operators insert the meter in the chlorine gas process piping and wire its 4-20 mA output to the input/output modules in the automation system. The solid-state precision flow sensor reduces plugging and measures extremely low flow.

The unit measures air/gas flows from 0.25 to 1600 SFPS with a turndown ratio up to 1000:1. Measurements for fluid temperature are -100 to 850 degrees F and 1,000 psig. Its microprocessor-based programmable transmitter stores three gas calibration groups, each manually or automatically switched for a specific gas calibration. The instrument also measures mass flow and temperature. 760/736-6180; www.fluid


Monitor sodium hypochlorite

The Hypo Trak sodium hypochlorite monitoring system from Force Flow allows tracking of usage, amount remaining, current strength, and hypo age from PLCs or SCADA systems. The unit also sends alarms indicating vapor-locked metering pumps and excessive chlorate formations. All functions are menu-driven, and configuration changes are done through the keypad. The monitor is housed in a NEMA 4X enclosure. 800/893-6723;


Control chlorine feed

The Foxcroft FX-1000P amperometric chlorine residual analyzer from Foxcroft Equipment and Service Co. Inc. measures free or total chlorine residuals instantly, and continuously with an isolated 4-20 mA output that allows operators to control chlorine feed. A distilled white vinegar buffer prevents deposits of oil, grease, hydrogen sulfide, iron-manganese, and other materials.

The analyzer has field-adjustable operating ranges from parts per billion to 0-100 ppm undiluted, and high and low alarms. High-grade gold and copper electrodes, fixed sample and buffer feed rates, and continuous cell mixing and cleaning assure accurate readings. Solid-state analog electronics provide drift-free residual readings and output signal. 800/874-0590;


Wireless automation

The scalable IO expansion module from FreeWave Technologies has 12 input-output points per module and 192 IO points per 16-module stack for wireless automation requirements. The unit integrates with the FreeWave Modbus network. Operators can stack 16 modules on the radio or base, or use the unit as an expandable remote module through a serial connection. The unit is Class 1, Division 2 approved. 866/399-4930;


Effluent discharge monitor

Inline PCA 330 series free and total residual chlorine analyzers from Hanna Instruments Inc. monitor pH, ORP, and temperature. The units have two, 4-20 mA outputs for integration with most SCADA systems, and continuously monitor and control the chlorine content in wastewater up to 5 mg/l with an accuracy of ± 4 percent or ± 0.035 mg/l, whichever is greater. The analyzers have a user-programmable sampling rate from 2.5 to 99 minutes per sample and are based on the U.S. EPA-recommended DPD 330.5 method. 800/426-6287;


Nitrate sensor

The NO3D sc nitrate immersion sensor from Hach Co. uses ion-selective electrode technology to measure nitrate ions in wastewater. Operators can monitor nitrogen removal online to control the nutrient removal process in treatment plants with less than 30 percent industrial waste. 800/227-4224;


Hart protocol

The TS4000H toxic gas detector from General Monitors is compatible with HART communication protocol, which provides uniform and consistent communication without disturbing the 4-20 mA analog signal. This permits access to device configuration, diagnostics, and maintenance and alarm records.

Besides identifying hazardous gases, the detector safeguards against oxygen deficiency. It displays concentrations to 500 ppm, displays fault codes, prompts when calibration is needed, and provides complete status to the control room. Features include event logs, visible LED, and an indicator for remaining sensor life. The unit, in an explosion-proof housing, also is available in Modbus configuration with three 8-amp relays. 800/330-9161;


External flow meter

The PDFM 5.0 portable Doppler flowmeter from Greyline Instruments Inc. shows flow rate instantly when mounted on the outside of metal or plastic pipes. Operators enter the pipe diameter with the five-button keypad and the sensor displays, totalizes, and datalogs in gallons, liters, or other units. The handheld flowmeter includes 4-20 mA output and 320,000-point datalogger with USB output and Windows software. The rechargeable NiMH battery powers the unit for at least 24 hours. A pushbutton sleep mode extends battery life. 888/473-9546;


Gas detection

The water-resistant MX4 iQuad personal gas monitor from Industrial Scientific Corp. monitors four nontoxic gases and two toxic gases. The unit uses ultra-bright LEDs, a 95-dB audible alarm, and a vibrating alarm to warn users of hazardous environments. Its high-impact polycarbonate housing and protective rubber overmold are certified IP66 and IP67 to withstand dirty environments. 800/338-3287;


Level transmitter

The LevelRat lift station level transmitter from Keller America Inc. has a durable and abrasion-resistant flush Kynar diaphragm that won’t clog or foul when taking measurements in sewage or greasy/slurry conditions. The transmitter has standard lightning protection against damage from voltage surges and direct strikes. 877/253-5537;


Optical do sensor

The U.S. EPA-approved Rugged Dissolved Oxygen (RDO) optical DO sensor from In-Situ Inc. withstands fouling, high-sediment loads, and rapid flow rates. Using optical- or luminescence-based DO methods, the abrasion-resistant sensor responds rapidly to changing levels, maintains a stable response even in hypoxic conditions, and operates with very low drift for long periods. Calibration and maintenance requirements are minimal. 800/446-7488;


Optimize operations

GPS-X software from Hydromantis Inc. enables operators to improve the design and operation of most wastewater treatment plants. Users drag and drop unit processes to configure the facility, then calibrate the model using plant data and wastewater characteristics. The program carries out numerous what-if scenarios, such as taking tanks out of service, evaluating the effect of rainstorms, upgrading the facility with membrane bioreactors, adding fine-bubble diffusion, and changing RAS, WAS, or SRT. 905/522-0012;


Sample labeling

The LABELShop 2011XLB-PC thermal transfer printer from K-Sun Corp. works with a computer or as a standalone for lab sample labeling, testing, and monitoring. MaxiLabel Pro software has more than 1,100 special characters, 150 preset wizards, date/time stamp, eight bar codes, and hundreds of special symbols for safety, electrical, and environment. Users can import logos, graphics, and symbols into custom designs. 800/622-6312;



The Pocket H2S from KWJ Engineering is a hydrogen sulfide detector, alarm, and dosimeter in a 1-ounce package. The clip-on key-sized instrument has alarms in LED, audio, and vibration. The first alarm triggers at 10 ppm and the second at 20 ppm; 50 ppm is the highest level. It also has an eight-hour total weighted average warning alarm at 10 ppm. The instrument self-checks on startup. It has datalogging with renewable battery and sensor and electrochemical sensor response. 877/794-4296;


Remote monitoring

The Vibnode 6- or 12-channel vibration-monitoring system from Ludeca Inc. lets operators access customized spectrums at remote pumping stations with pumps 100 to 130 feet deep. Submersible accelerometers at the drive end of the pump collect, evaluate, and report operating conditions to the plant SCADA. OmniTrend software stores and analyses spectrums that users can monitor and reference to narrow band alarms for text or e-mail notification. 305/591-8935;


Monitors TOC/TC

In less than three minutes, QuickTOC and QuickTOC Loop Online analyzers from Liquid Analytical Resource LLC monitor total organic carbon up to 50,000 mg/l and total carbon without dilution. They also monitor memory effects, catalyst, or loss of volatile organic compounds (VOC). Operating at 2,192 degrees F, the units oxidize difficult substances even in high-salt applications. 978/425-0300;


Pulse burst radar

The loop-powered non-contact Model R82 radar transmitter from Magnetrol Environmental Inc. is based on pulse burst radar technology with equivalent time sampling circuitry. It measures a 40-foot range by emitting short bursts of 26-GHz microwave energy that is reflected from the liquid-level surface. The unit configures with the menu-driven, four-pushbutton, two-line, 16-character display, HART digital communications, or PACTware. The options allow operators to configure the transmitter through the local user interface or remotely with the capability of capturing echo waveforms and viewing trend data and diagnostic conditions. 630/969-4000;


Rack-mount system

The TA-2048MB gas detection digital Modbus rack-mount controller from Mil-Ram Technology Inc. identifies hundreds of gases and vapors using 48 channels with three separate 16-channel Modbus networks. The multi-drop transmitter network eliminates separate wiring to each detector, while the auto-configuration wizard makes channel configuration automatic using the front-panel, pushbutton setup.

The RS-485 digital Modbus RTU provides half- or full-duplex configuration. A backlit 16-character by 2-line LCD display auto-scrolls channel data and fault conditions, and continuous diagnostics. The controller uses local or remote power. 888/464-5726;


Density meter

The Markland Model 502 suspended solids meter from Markland Specialty Engineering lets users easily measure the concentration of sludges or slurries without the reading being affected by color. In wastewater treatment plants, it is used to measure primary, secondary and return activated sludges and it can also monitor industrial sludges and process slurries. In drinking water plants, it can measure the concentration of backwash sludge from sand or membrane filters before it is sent for further processing.

The device uses the attenuation of ultrasound to read the concentration. It measures slurries that are too thick for optical methods. The meter can be mounted in open-top tanks or pipelines. Ultrasound is inherently safe and requires no permits or regulatory approvals to operate. 905/873-7791;


Continuous gas analyzer

The Sentinel S4 continuous online gas monitor from Vapex Products Inc. delivers a 50 percent reduction in scrubber chemicals. The unit operates as a scrubber control to measure internal gas and regulate chemical pump additions, or as a monitor that sends 4-20 mA signals indicating scrubber performance to existing control devices. It accommodates two to four hydrogen sulfide and chlorine sample points. The monitors have long-life sampling pumps, touchscreen interface, onscreen help functions, and data storage for scrubber analysis. 888/907-0004;


Corrosion monitor

The OnGuard 3000 atmospheric corrosion monitor from Purafil Inc. gauges the real-time effects of corrosion on electronics in control rooms, SCADA rooms, or motor control centers, and monitors corrosion in variable frequency drives or control panels.

It uses copper- and silver-plated quartz crystal microbalance sensors to measure the accumulation of corrosive film on sensitive metals.

The monitor generates minute-by-minute corrosion level readings that predict and prevent computer failure; increase instruments’ reliability; identify air-quality trends; gauge temperature, relative humidity and differential room pressure; and project the environment’s ISA severity level. The unit stands alone as a datalogger or connects to a distributed control system that uploads data to personal computers. 800/222-6367:


Weather station

The compact System 6A industrial weather station from Rain Wise Inc. has sensors for wind speed and direction, rainfall, temperature, relative humidity, and barometric pressure. Individual sensors are connected into a single support assembly that outputs in analog 4-20 mA or 0-10-volt DC current, Serial RS-232 or RS-485, and Modbus RTU. Solar radiation, soil temperature, and soil moisture sensors are optional. 800/762-5723;


Automation controller

The SEL-2411 programmable automation controller from Schweitzer Engineering Laboratories qualifies for UL Class I, Zone 2 approval, operates at -40 to 185 degrees F, withstands 15-kV electrostatic shock, and resists 15-g vibration/shock. Built-in voltage and current connections allow operators to monitor electrical quality and power consumption. Access is through the front-panel display or SCADA networks. 509/332-1890;


Thermal mass flow meters

Steel-Trak Model 640S immersible thermal mass flowmeters from Sierra Instruments Inc. are made of heavy-duty 316 stainless steel wetted materials. The high-temperature design withstands 750 degrees F. The 3/4-inch-diameter sensor probe inserts into ducts and pipes up to 72 inches and has numerous process connections including hot tap. For very large ducts, multipoint-flow-averaging arrays have touchscreens for field programming, meter validation, and diagnostics. Probes remove easily for cleaning. 800/866-0200;


Harmonic filter

The StacoSine active harmonic filter from Staco Energy Products alleviates problematic electrical harmonics in variable-frequency drives and pumps. Available from 25 to 300 amperes as a standalone or motor-control integrated system, it accommodates multiple-drive harmonic mitigation. The filter has a DSP controller with discrete fourier transform algorithm topology and analysis/ calculate performance response time of less than 20 ms. Its LED graphic display has multiple operation and maintenance functions with 16-line and 40-character capability. The man-machine interface and analyzer provide operating data status and alarm information. 866/261-1191;


Trending tool

The Web-based Trending Tool from Sunapsys Inc. lets operators spot operational issues before they become serious problems. The interface shows time-based data from any database or predefined trends. Users can map database field names to user-friendly names, export trends, and plot levels, flows, and pump status. Holding the mouse pointer over a trend reveals its actual point values. Features include scroll and zoom, drop-down menus, and pop-up calendars. 540/904-6862;


COD reagents

A complete line of chemical oxygen demand (COD) reagents from Orbeco-Hellige test ranges from zero to 15,000 mg/l. Packs of 25 or 150 vials have a measured amount of reagent, so operators just add water. Mercury-free reagents are available. 800/922-5242;


Bluetooth RF transceiver

The 750-644 Bluetooth RF-transceiver module from Wago Corp. provides fast, bidirectional wireless communication between input/output nodes. Within 10 ms, the unit exchanges data up to 3,281 feet (line-of-sight) or 328 feet (within buildings) for secure data transmission controller-to-controller during the treatment process. One master module communicates with seven slaves on a personal area network via Bluetooth 2.0+EDR radio technology. The module supports Ethernet I/P, Modbus TCP/IP, Profibus, DeviceNet, and CANopen technologies. 800/346-7245;


Wireless Manhole Monitoring

The wireless manhole monitoring system from Weidmuller is compact and easy to use and can send analog and discrete signals through the ground and steel manhole covers to receivers often blocks away. The energy-efficient unit also uses standard AA-sized batteries and is housed in an explosion-proof, Class 1, Division 1 enclosure with small external antenna. The portable system monitors water levels and high-low set points. 800/849-9343;


Process Control Software

The Advantage complete SCADA solution from Total System Resources combines numerous functions. Logging of historical information and report generation provides easy access to data. Plant operators can create and edit graphic displays without stopping communications, and multiple communication protocols provide translation between different hardware vendors. A suite of specialized tools balances structure and flexibility to reduce integration and startup time. Embedded navigation tools simplify database management. 888/583-3001;


Complete titrations

The palm-sized, portable magnetic SpeedStir from Taylor Technologies makes speeds drop-count titrations such as the FAS-DPD test for free and combined chlorine. The stirrer thoroughly incorporates each reagent addition in a second. Operators simply place the water sample on the mixing platform, add the stir bar, turn it on, and dispense reagent. Six LEDs below the mixing platform illuminate the test sample, making color changes easy to see. The 600-rpm unit runs on four AA alkaline batteries and shuts off automatically after 60 seconds. 800/837-8548;


Refrigerated sampler

The Model 4700 refrigerated sampler from Teledyne Isco has a rotational-molded and insulated cabinet, energy-efficient compressor, polyester powder coating, and a sealed NEMA 4X, 6 (IP67) electronics enclosure. The liquid detector and pump counter ensure sample volume accuracy. 800/228-4373;


Chlorine control

The Capital Controls Series 1870E chlorine residual analyzer from Severn Trent Services is an amperometric-based instrument that continuously analyzes free or total chlorine, chlorine dioxide, iodine, bromine, or other oxidants. The system has a field-selectable monitoring range from 0-0.1 to 0-20 mg/l. It incorporates a constant, direct-drive electrode cleaning system and provides consistent residual values. 215/997-4000;


Water quality monitor

The handheld Ultrameter II water quality monitor from Myron L Co. measures conductivity, resistivity, TDS, pH, ORP, and temperature using supplied internal sensors. Accuracy is ±1 percent of reading for conductivity/TDS/resistivity and ±0.01 for pH. The instrument, waterproof and submersible to 3 feet, has automatic temperature compensation to 77 degrees F, memory for 100 date/time-stamped readings, and a user-replaceable pH/ORP sensor. Features include one-touch measurement, easy keypad calibration, and IR port for fast data transfers with optional uDock. 760/438-2021;


Wireless controller

The wireless ConsoliDator from Precision Digital Corp. has four or eight channels and is easy to use. It accepts 4-20 mA, Modbus and flowmeter pulse inputs and displays them on a large backlit LCD screen. Its main screen displays inputs in numeric and bar graph format. Additional screens show detailed information about each input. The unit is suitable for all general-purpose monitoring and controlling applications, and can be installed up to 5 miles from the sensors with the pre-programmed wireless feature. 800/343-1001;


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