Invensys Systems, Inc.
Foxboro, MA 02035
Nov 05, 2009 Foxboro® PH12 Series high-performance, disposable pH sensors feature PEEK material body that optimizes durability. Electrochemical sensors include Nafion ion barrier to protect reference junction and nonmetallic solution ground which enables addition of efficient sensor diagnostics. Temperature performance range is from -15 to +125°C and rugged units are also chemical-resistant. Sensors are available with flat, ruggedized glass pH electrode or domed pH electrode.

Electro-Chemical Devices, Inc.
Yorba Linda, CA 92887
Sep 04, 2009 Immersion/insertion S10 and valve retractable S17 sensors are fully re-buildable and feature 316 SS body that incorporates sensing element, temperature module, and signal conditioner with cabling. Replaceable pIon electrode cartridge measures activity of free Ammonium ions in solution with concentrations from 0.5-18,000 ppm over pH range of 2-10 and temperatures from 0 to +40°C. Sensors support integration with C22 Analyzer for automatic pH compensation.

Emerson Process Management, Rosemount Div.
Chanhassen, MN 55317
Apr 10, 2009 Eliminating need for field calibration, PERpH-X® pH sensors, Model 6081 wireless analyzer, Model 1056 dual-input analyzer, and Model 1057 multi-parameter analyzer include SMART capability, where embedded calibration is uploaded to analyzer from sensor at start-up. In addition to built-in calibration, sensors also store calibration data, making it possible to monitor and schedule maintenance on sensors from central control room.

ABB Instrumentation
Warminster, PA 18974
Apr 06, 2009 Endura TBX587 Retractable pH sensor is designed for 1 in. NPT process connections found in sample lines in refineries and chemical plants. It includes 316 SS hardware, temperature compensation element located at tip, and T-style handle that aids in insertion and retraction into pressurized process pipelines. Based on solid state, Next Step Reference design, sensor can withstand chemical poisoning and build-up found in chemical processes and slurries.

Extech Instruments Corp.
Waltham, MA 02451 1020
Mar 11, 2009 Utilizing flat surface electrode, ExStik® CL200 monitors Residual Chloramines and Total Chlorine including free chlorine, hypochlorite, and chlorine bound to nitrogenous compounds. Unit provides direct reading of Total Chlorine from 0.01-10.00 ppm, eliminating need to transport sample back to lab for analysis. Meter is suited for measuring chlorine in drinking water, cooling towers, wastewater treatment systems, industrial cooling water, pools, spas, and food processing.

Emerson Process Management
Austin, TX 78754
Oct 01, 2008 Designed for life science applications and suited for pharmaceutical manufacturers, autoclavable and steam-sterilizable Rosemount Analytical® PUR-Sense(TM) 3800 exhibits sensor drift below 0.1 pH after autoclave of 125°C for 45 min and continued sensor life after 30+ autoclave cycles or 50 steam cycles. Reliability/stability in high heat is based on PERpH-X® and AccuGlass® technologies, and insertion lengths of 120, 225, and 325 mm are available.

Thermo Fisher Scientific
Waltham, MA 02454
Sep 02, 2008 Featuring refillable epoxy body design, ROSS Ultra Triodes offer precision of 0.01 pH unit, accuracy within 0.03 pH units when using automatic temperature compensation, and fast temperature response within 1°C. Units are compatible with samples containing TRIS, proteins, and sulfides. Available in 4 different models depending on which meter customer has, all electrodes have waterproof BNC connectors for pH measurement.

GF Piping Systems
Tustin, CA 92780-7258
Aug 01, 2008 Featuring foul-proof DryLoc connector and Ryton® sensor body to provide chemical compatibility for use in wide range of applications, Models 2724-2726 Signet DryLoc pH/ORP Sensors can mount into standard Signet 0.50-4 in. fittings as well as Georg Fischer tees and off-the-shelf reducing tees ¾ in. or larger. Retrofitting into existing ¾ or 1 in. tees can be done by using reducer bushing. Sensing elements are available in various configurations, and all provide 4-20 mA output.

Emerson Process Management / Process Liquid Division / Uniloc Division
Irvine, CA 92606
Nov 02, 2007 Featuring plastic-threaded connections, Rosemount® Analytical PERpH-X(TM) 3500 can handle aggressive fouling applications. Double junction AccuGlass pH glass electrode is resistant to thermal and caustic degradation, and removable slotted tip protects glass bulb from direct impacts. Replaceable porous Teflon liquid junction has surface area optimized to maintain steady reference signal, and potassium-chloride-based reference electrolyte is unaffected by thermal/pressure cycling.

SpectrEcology, LLC
Dunedin, FL 34698
Oct 17, 2007 Embedded in wall of standard 1 cm cuvette, pHuvette is optical pH sensor that traps bromcresol green pH indicator ions in hydrophilic sol-gel cage, and can be used with any spectrophotometer to provide accurate stable measurements of pH of fluid contained in cuvette. Including embedded oxygen sensor, pHoxyvette smart cuvette detects O₂ by using phase fluorimetry to measure fluorescence quenching, while pHoxyvette cuvette comes with both pH and pO₂ sensors.

Thermo Electron Corp.
Waltham, MA 02454
Jan 12, 2007 At less than 3 mm in diameter, ROSS Micro pH Electrode (Model 8220BNWP) can be used with Orion PerpHecT® meters to enable measurement of pH while allowing for direct temperature measurement and compensation without separate ATC probe. Used independently or in conjunction with Orion meters, Micro Automatic Temperature Compensation Probe (Model 928007MD) features SS sensing tip measuring less than 1 mm in diameter, allowing users to obtain temperature of samples as small as 10 µL.

Analytical Technology, Inc.
Oaks, PA 19426
Dec 20, 2006 Available in several mounting configurations, pH/ORP sensor utilizes sealed reference design where second glass pH electrode acts as reference element to protect sensor from chemical poisons. Electrode used for ORP measurement can be platinum or gold depending on process solution. Pre-amplifier encapsulated in body ensures stable readings in harsh environments, while sensor diagnostics alerts user in event of electrode breakage, or integral temperature sensor failure.

Norcross Corp.
Newton, MA 02458 1829
Sep 13, 2006 Installed directly in fluid line, In-Line pH Sensor incorporates transmitter, which converts mV signal to 4-20 mA for transmission to controller. Featuring flat tip probe with glass insert, sensor has integral reservoir, which traps fluid to keep probe tip wet during job changes and to prevent drying out. Applications include liquid chemical processes such as water-based printing inks, food production, pharmaceutical, and general manufacturing.

Emerson Process Management / Process Liquid Division / Uniloc Division
Irvine, CA 92606
Sep 11, 2006 Models 3300HT and 3400HT pH sensors handle pressures of 100 psig at 145°C or 250 psig at 100°C. Model 3400HT retractable design allows removal for calibration and maintenance without process shutdown, while 3300HT insertion/submersion design allows variable insertion depths and removal without twisting. Sensors feature pH-resistant glass formulations, replaceable Teflon® reference junction, and chemically resistant Ryton(TM) body. Several mounting and cabling options are available.

Emerson Process Management / Process Liquid Division / Uniloc Division
Irvine, CA 92606
Oct 12, 2005 Model 398 TUpH® pH/ORP Sensor employs PEEK plastic helical reference pathway that protects reference element from chemical attack. Resistant to oxidants and organic solvents, sensor integrates AccuGlass pH electrode to resist cracking and SILCORE triple-seal contaminant barrier to protect integrity of pH measurement. Product is constructed of chemical-resistant titanium and Tefzel® and suited for applications in pulp and paper, chemical, and plastics manufacturing.

Honeywell
Golden Valley, MN 55422 3935
May 13, 2004 Durafet III pH electrode, featuring IP68-rated Vario Pin watertight connection, delivers response times that allow real-time pH control. Non-glass, unbreakable sensor is also available in sanitary version to meet 3A standards for food and dairy, pharmaceutical, and biotech applications. Additional industrial and sanitary applications include wastewater influent/effluent monitoring, neutralization, reagent addition control, and plating.

Thermo Electron Corp.
Waltham, MA 0245-11105
Apr 01, 2004 Orion ROSS Ultra screw-cap electrodes are available in standard glass-bulb, flat-surface, semi-micro, and epoxy-bodied styles to best determine pH of variety of sample types. Screw-capped electrodes accommodate applications such as titrations. ROSS Ultra half-cell reference electrode is available for applications where separate sensor and reference electrodes are preferred.

Walchem Corp.
Holliston, MA 01746 1460
Mar 04, 2004 Constructed with glass electrode that is not prone to chemical attack, WDS Series differential pH and ORP sensors transmit signals up to 3,000 ft and are resistant to ground loop problems. Sensors can be replaced if reference solution becomes contaminated or salt bridge becomes clogged. Reference electrode is constructed from pH glass and is embedded in pH 7 buffer within sensor behind porous, replaceable salt bridge.

Emerson Process Management / Rosemount Div.
Chanhassen, MN 55317
Jul 08, 2003 Rosemount Analytical TUpH pH sensors feature SILCORE(TM) technology, a triple-seal contaminant barrier that hinders moisture and material impurities from migrating to pH electrode's metal lead wire. Secondary helical reference pathway hinders reference poisoning, while ACCUGLASS(TM) pH glass formulations minimize glass cracking. Predictive sensor diagnostics alert user to need for calibration, maintenance, and replacement before failure occurs.

Orion Research, Inc., A Sub. Of Thermedics, Inc., A Thermo Electron Co.
Beverly, MA 01915-6199
Feb 19, 2003 Available in rugged and standard glass bulb, flat-surface, semi-micro, and epoxy-bodied styles, ROSS Ultraâ„¢ pH electrodes use virtually drift-free reference system that is unaffected by temperature or composition. ROSS Ultra half-cell reference electrodes are also available for applications where separate sensor and reference electrodes are preferred.