Detectors and Monitors

Click here to enlarge imageTurbidity monitoringHach's AquaTrend firmware was created to help water treatment plants comply with EPA's latest requirement for turbidity monitoring. The new Version 4.0 provides data logging every 15 minutes for 30 days. By testing turbidity in 15-minute intervals, the firmware complies with the EPA specification for turbidity reporting, which became effective in December 1998. The regulation specifically requires water plants to monitor filters individually. The firmware compresses and stores data automatically, eliminating the need for an on-site data logger or computer.Hach Co.Loveland, COTel: 800-227-4224Web: www.hach.com

Click here to enlarge imageDigital manometerThe Series 490 Wet/Wet handheld digital manometer from Dwyer Instruments is designed for positive or positive differential pressure measurements with an accuracy of ±5% FS. The meters are available in four models, covering pressure ranges from 0-15 psi to 1-100 psi. The instruments are housed in an extruded aluminum case and have a large LCD. Dual 1/8 in. NPT(f) connections are provided. Features include a memory function that permits storage of up to 20 readings, a hold feature, and both visual and audible overpressure alarms. The unit will operate up to 100 hours with a 9 volt alkaline battery.Dwyer Instruments Inc.Michigan City, INTel: 219-879-8000Web: www.dwyer-inst.com

Click here to enlarge imagePressure loggersDickson recently added stainless steel pressure data loggers, models PR100 and PR300, to its line of instrumentation. The loggers feature a waterproof stainless steel case, can monitor pressure ranges from 0 to 300 psi, and operate in temperature ranges from -40 to 185°F. The PR100 and PR300 feature a 5-year battery life and can record almost 8,000 samples. They can be used to measure and document liquid, gas, and air pressure.Dickson CompanyAddison, ILTel: 800-323-2448Web: www.dicksonweb.com

Click here to enlarge imageDO, BOD meterThe accumet® series of meters from Fisher Scientific feature touchscreen technology. The AR 40 Benchtop Meter Kit provides both DO and BOD readings. Its dissolved oxygen readings offer a measuring range of 0 to 60 mg/l or 0 to 600 percent saturation with a temperature range of 0 to 450° C. The AR 40 automatically calculates 5-day BOD results, gives automatic barometric atmospheric pressure readings and stores up to 250 sample measurements. It includes a self-stirring probe and a bi-directional RS232C port, which enables data to be sent to a printer or PC. Portable designs in the series include the 5-button AP 64 and AP64C.Fisher ScientificPittsburgh, PATel: 412-490-7299

Click here to enlarge imageBiological monitorThe USFilter Davis Products Alka-Pro® 300 Series continuously monitors biological activity at critical locations in a wastewater treatment plant, allowing operators to detect and correct upset conditions before they become evident by any other available test. The monitor automatically controls process equipment, providing accurate real-time evaluation of the plant's bacteria metabolism and biomass health. The benefits are improved effluent quality with reduced chemical costs and process power.USFilter Davis ProductsThomasville, GATel: 800-841-1550Web: www.usfilter.com

Click here to enlarge imageMeasurement, control systemThe CR5000 from Campbell Scientific is a stand-alone data acquisition system that features rapid sampling and a large number of channels, making it suited for SCADA and other unattended measurement and control applications. Features include: 40 single-ended (20 differential) analog inputs with 16-bit resolution; up to 5 kHz throughput; two pulse channels, two continuous analog output channels, four switched voltage excitation channels, four constant current excitation channels, and eight digital I/O ports. The system measures nearly every commercially available sensor and is compatible with most communications options, including radio and ethernet.Campbell Scientific, Inc.Logan, UTTel: 435-750-9510Web: www.campbellsci.comData recorderMonarch Instruments has announced the Data-Chart® 2000, a direct input, color or monochrome paperless recorder for process signal recording. It has a 5.6-in. active matrix color LCD that enhances information review. Touchscreen control provides for setup, recorder functions, and data-review on-site. The universal, isolated two, four, or six channel input module measures a wide range of DC voltage, DC current, RTD and thermocouples with exceptional 0.05% voltage accuracy and high resolution. Data is stored in an internal 1 Mb RAM buffer on either a 100 Mb zip disk, 3.5 inch 1.44 Mb floppy disk or PCMCIA memory card with up to 220 Mb capability. The IP65 rated front bezel is ideal for mounting in wet or dusty environments.Monarch InstrumentsAmherst, NHTel: 800-999-3390Web: www.monarchinstrument.com

Click here to enlarge imageDigital indicating controllerAnalytical Measurements offers a full line of pH and ORP (Redox) instrumentation as well as replacement probes/sensors. Its new digital indicating controller can be configured to monitor and control either pH or ORP. Standard features include a large digital display readable from over 50 feet as well as a two point controller. The two controllers can activate pumps, alarms, etc., based on pre-selected pH or millivolt set points. Manual temperature compensation is provided from 0 to 1000 C. The unit is enclosed in a NEMA 4X enclosure with an easy access front hinged panel made of clear plastic. The unit is used when only indication and controlling is required.Analytical MeasurementsHillside, NJTel: 800-635-5580Web: www.analyticalmeasurements.com

Click here to enlarge imageStreaming potential monitorThe new AccuStream™ streaming potential monitoring system from GLI International continuously measures electrical charge intensity, which indicates coagulant dosage in the treatment process. Use of this analytical device ensures optimum chemical dosage, which improves water treatment performance while reducing coagulant consumption and overall treatment costs. The non-fouling sensor design produces the streaming potential signal. With water samples continuously passing through the sensor, process changes can be detected instantly. An optimal sensor design buffers the sample, maintaining a stable signal even with variations in flow rate. The system is able to perform sensitive measurements over long periods of time with very little maintenance.GLI International, Inc. Milwaukee, WITel: 414-355-3601Web: www.gliint.com

Click here to enlarge imageLevel alarmsConery Mfg. has released its new UL and CUL listed TA15 series liquid level alarms. These alarms can be used for either high level (TA15H) or low level (TA15L) notification. The standard 15 ft. mini float connects to the alarm by way of quick connect tabs on the bottom. A 6 ft. 120 vAC power cord with an 18 volt secondary power system powers the 85-db alarm. The case is a 6 in. x 4 in. x 2.5 in. NEMA 1 metal enclosure suitable for indoor use.Conery Manufacturing Inc. Ashland, OHTel: 419-289-1444Web: www.conerymfg.com

Click here to enlarge imageUV monitorSolar Light's GLM10 is a stable, calibratable UV detector designed to ensure UV lamp efficacy. The unit's one-piece design for both readout and detector makes it suitable for operation in pressurized water environments. Percent of initial lamp intensity is read on an LED. When lamp output drops to 60%, a low-level indicator light turns on and a power relay trips to initiate any other alarm or desired control device. When UV intensity rises above the low-level set point, the alarm indication is automatically removed.Solar Light Co.Philadelphia, PATel: 215-927-4206Web: www.solar.com

Click here to enlarge imageWireless monitoringUSFilter's Stranco Products has introduced the Livello™ Wireless Transmonitor, a liquid level monitoring system that allows for the monitoring of chemical inventories via the Internet. The system combines level sensor electronics with microburst cellular communications to provide information on current chemical tank levels. Using either an ultrasonic or a submersible differential pressure sensor to measure levels, the monitor digitizes the sensor signal and transmits the output to the nearest cellular telephone tower. A secure website provides authorized personnel access to "snapshots" of current chemical inventories.USFilter Stranco ProductsBradley, ILTel: 815-929-4112Web: www.usfilter.com

Click here to enlarge imageMulti-gas monitorDesigned to provide personal protection under potentially dangerous atmospheric conditions, the LTX312 from Industrial Scientific is a portable gas monitor for use in any industry. The device monitors up to three gases: oxygen, combustible gases (LEL or methane) and any one of 10 toxic gases, including chlorine and sulfur dioxide. The handheld, portable instrument automatically recognizes and identifies installed sensors and adjusts alarms and recommended calibration parameters accordingly. Constructed of stainless steel, the instrument weighs 20 ounces and is powered by a choice of NiCad or replaceable 9 volt alkaline or lithium batteries.Industrial Scientific Corp.Oakdale, PATel: 412-788-4353Web: www.indsci.com

Click here to enlarge imageMultiparameter monitorsWTW Measurement Systems offers the highly modular IQ Sensor Net systems for monitoring dissolved oxygen, pH/ORP, suspended solids, turbidity and conductivity. The systems permit up to 20 measurement locations with any mix of parameters, all selectable and modifiable by the user. Parameter specific signal processing occurs in the IQ sensors. The central control system performs communications, measurement display and operating functions, universally and simultaneously, for all sensors over a single, 2-wire cable.WTW Measurement Syst. Inc.Fort Myers, FLTel: 800-645-5999Web: www.wtw-inc.com

Click here to enlarge imageGas detectionThe Detcon Model 12B control modules are designed to supervise and display the condition of a single remote gas detection sensor. The microprocessor based electronic circuit receives a 4-20 maDC input signal, displays the current gas concentration, and provides three adjustable alarm relays and fault relays combined with a serial RS485 output. The module includes a three-digit digital indicator. Field programming is either jumper selectable or by coded and scripted use of the front panel reset switch. Input power requirement is 24 vDC and less than 1.5 watts.Detcon Inc.The Woodlands, TXTel: 281-367-4100Web: www.detcon.com

Click here to enlarge imagepH TesterTelatemp Corp. has introduced the Double Junction Waterproof pHTestr2, a pocket-sized pH meter. The meter's features include push-button calibration, IP67-rated waterproof/dustproof housing, replaceable electrodes and the ability to withstand harsh chemical environments. The double junction pH reference electrodes slow chemical attack. The meter operates in temperatures from 32 to 1220 F, with a range from –1.0 to 15 pH. With automatic temperature compensation, accurate readings can be achieved in fluctuating temperatures with ±0.1 ph accuracy. The unit weighs 3.25 oz.Telatemp Corp.Fullerton, CATel: 714-879-2901Web: www.telatemp.com

Click here to enlarge imageGroundwater monitoringAMS Inc. now offers the GMS 2001 groundwater monitoring system. The unit is the smallest groundwater monitor with the option of creating documentation for monitoring results. The system simultaneously monitors pH, redox, specific conductivity, dissolved oxygen and water temperature. It is self-contained and applicable for sampling ground or surface water, as well as agricultural and industrial wastewater.AMS Inc.American Falls, IDWeb: www.ams-samplers.comRemote monitoringPhonetics has released a new accessory for its line of Sensaphone® products — the Phonecell SX3e cellular phone. The new accessory equips monitoring systems with cellular technology to enable system-to-personnel communications from areas not easily accessible to landline telephone service. Designed for all Sensaphone products, including the Sensaphone 2000 and the Sensaphone SCADA 3000 remote monitoring systems, the cellular system comes complete with the cellular phone and adapter, can be powered by battery, and offers three watts of power. When an alarm is issued, the cellular phone automatically dials up to 64 pre-programmed numbers and alerts personnel of possible emergency conditions. The Phonecell has transmission power up to five times greater than the average hand-held cell phone.Phonetics, Inc.Aston, PATel: 610-558-2700

Click here to enlarge imageData loggerDataTaker Inc. offers the Datataker DT800, a stand-alone, high-speed, microprocessor-based, battery powered data logger that measures inputs from most commonly used sensors. Collected data can be downloaded to a computer via direct RS232; modem, radio or satellite links. USB and ethernet are standard features. The logger can also communicate via PC card interface adapters.DataTaker Inc.Laguna Hills, CATel: 949-452-0750Web: www.datataker.comWastewater samplersQuality Control Equipment Co. offers a line of portable and stationary wastewater samplers. The samplers use a heavy duty vacuum/pressure technique; 3/8 in. and 5/8 in. ID intake lines are available. The systems are low maintenance and competitively priced.Quality Control Equipment CompanyDes Moines, IowaTel: 515-266-2268Tank level monitoringRobertshaw Industrial Products has received ETL approvals for the Centeron™ remote tank level monitoring system. The monitors are ultrasonic, RF/capacitance and gauge-based units that are rated intrinsically safe for use in Class 1, Div. 1, Group D hazardous locations. The system measures tank levels and sends data using direct sequence spread spectrum wireless technology. All monitors have a battery life of up to five years and self-diagnostic capabilities.Robertshaw Industrial ProductsMaryville, TNTel: 800-237-7429Web: www.centeron.net

Click here to enlarge imageFlow probeThe Global Water FP101 Flow Probe has true velocity averaging so the average velocity may be read directly on the display. Move the probe throughout the flow for several seconds and the average velocity is calculated automatically. The probe is ideal for measuring flows in rivers, streams, storm drains and sewers.Global WaterGold River, CATel: 800-876-1172Web: www.globalw.com