• Contacting Conductivity Cells
• Sensing Electrode
• 316 Stainless Steel, Titanium, Monel, Hastelloy C, Nickel, Zirconium and others upon request
• Insulator
• CPVC, TEFLON (PTFE), KYNAR(PVDF), PEEK and others upon request
• "O"-Rings
• EPDM & EPR, Viton, Kalrez, and others upon request
• Sealing Fittings
• 316SS, Propylene, KYNAR (PVDF), and others upon request
• Toroidal Conductivity Sensors
  • Polypropylene, and others upon request

Selected Applications & Uses:

• High-Temperature and High-Pressure Applications up to 250 psig @ 205 degrees Celsius or 500 psig @ 100 degrees Celsius
• Resistance to strong acid, bases, slurries and organic solvents
• Cell Constants 0.01, 0.02, 0.05, 0.1, 0.2, 1, 2, 5, 10 & 20 available
• Measure in solutions from ultra-pure water (0.01 microSiemens) to saturated electrolytes, acid and bases (600,000 microSiemens a.k.a. 600 milliSiemens)
• Integrated temperature compensation elements:
• 100 & 1000 Ohm Platinum, 10K Thermistor, 3K Balco, 8.55K NTC and many others
• Custom designs are available upon request (Inquire to factory)
• Sanitary applications requiring USDA FDA 3A compliance are supported
• High slurry media as well as aggressive and corrosive process media and environments

Superior performance and lifetime compared to most any OEM sensor due to optimal selection of materials, design and workmanship for each built-to-order sensor. A very low total cost of ownership is possible due to superior service lifetime and extremely competitive sensor unit cost comparable to much lesser quality sensors from competitors. All sensors are made in the USA.

MEASURE IN TOUGH APPLICATIONS

These conductivity sensors can operate in the most difficult of process conditions and interface with most existing instrumentation. Alternatively, complete electrochemical systems including mating transmitter can also be readily supplied as detailed in the conductivity measurement with the 3TX-CON transmitter brochure. Through our custom built-to-order design philosophy and business model, many applications that cannot be serviced by our competitors are quite feasible for our conductivity product line.

A selection of photos to represent the various types of conductivity are shown below together with various technical specification sheet for the same. These photos are not meant to exhaustive but rather only illustrative. Many additional photos, drawings and other technical details are available upon request from the factory.

AST10 is available cell constants 0.01 to 10.0 & AST51 is available in cell constants 0.1 to 1.0; both AST10 & AST51 are compact sensors for general purpose use and mounting into 3/4” or 1” pipe fittings to avoid the use of special flow cells. Are supplied with polypropylene, stainless steel, or KYNAR (PVDF) compression fittings available for all models.

Download AST10 & AST51 Specification Sheet

Special short style K=0.01/cm cell to support smaller lines for inline low conductivity use (i.e. RO or DI systems):

Download AST10 Short Style K=0.01/cm Specification Sheet

AST10 Inline & Immersion Contacting Conductivity Sensor with Cell Constant K=10 for high conductivity sample have a long form factor and special a installation scheme:

Download AST10 with K=10.0/cm Specification Sheet

AST41 High temperature & pressure boiler condensate and blow down control. Double seal design extends sensor life over twice that of single or epoxy sealed units. Cell constants: 2.0, 1.0, 0.2, 0.1, 0.05. Temperatures to 205 °C and pressures up to 500 psig with PEEK insulator & 316SS electrodes standard.

Download AST41 Specification Sheet

ASTXX-TRI small size sensor available with optional TRI sanitary clean in place (CIP) flange. FDA compliant food grade materials. Flange sizes 1/2", 1", 1.5", 2" and 2.5". Rated for use up to 150 psig at 130 degree Celsius. Cell Constants from 0.01 to 10.0. Special K=2.0/cm style ideal for chemical CIP inline installation to directly replace existing toroidal installation schemes.

Download ASTXX-TRI Specification Sheet

AST40 is a sensor for cell constant range of 0.01 to 20.0 and various mountings, including insertion, submersible or valve retractable assemblies for insertion/removal under line pressure. Wetted materials 316 SS & PEEK, with double O-ring seals for high chemical concentrations of acid, bases and salts. Alternate materials of construction are available for the sensor body, electrodes and insulator upon request.

Download AST40 & AST42 Specification Sheet

AST40 Contacting Conductivity Sensor for "HOT-TAP" Valve Insertion & Retraction installation with Cell Constant K=10 (Max Pressure 50 psig)

Download AST40 Valve Retractable Drawings for High-Cells

AST10 Contacting Conductivity Sensor for "HOT-TAP" Valve Insertion & Retraction installation with Cell Constant K=0.1, 1.0 & 10.0 (Max Pressure 150 psig)

Download AST10 Valve Retractable Drawings

AST50 & AST60 are compact double threaded 1”-1” MNPT bodied sensors for cell constants 0.1 to 2.0 offer fouling resistance & low maintenance for RO, drinking water inline quality measurements to wastewater submersion installations from low 50 µS all the way up to high 50,000 µS samples.

Download AST50 & AST60 Specification Sheet

AST52 High 10.0 cell constant in compact size for a variety of applications including skid mounted R.O. systems, water treatment, chemical dilution. The insulator comes standard as CVPC but can also be supplied with TEFLON (PTFE) upon request. Alternative material of construction are also available for the measuring electrodes (316SS standard).

Download AST52 Specification Sheet

ASTX-37PP toroidal conductivity sensor is a perfect choice for high conductivity solutions and applications where little or no maintenance is required.  Chemically resistant copolymer polpropylene plastic is ideal for aggressive process applications. Versions can be supplied that are compatible with most major OEM toroidal conductivity transmitter including but not limited to HACH (GLI), Rosemount and Foxboro.

Download ASTX-37PP Specification Sheet

Download Torroidal Inline Tee Drawing

Very many custom sensors are available upon request for specific needs. Although in some cases minimum orders may be required, quite often such minimums are quite modest. You are encouraged to inquire to the factory for all special order needs. A few selected examples are below for various cutom sensors that have been done for others before.

Special High Cell Constant K=10 for high HF Applications (Rinse Tank)

Download Rinse Tank Sensor Specification Sheet

Special AST60 High Pressure Low-Fouling Sensor for Inline Slurries (K-0.1/cm)

Download AST60 High-Pressure Sensor Specification Sheet

In addition to altogether special conductivity sensor design with custom form factor and functionality, most of the standard sensors are available in alternate materials of construction upon request, including USP Class VI material traceability requirements and USDA FDA 3A certifications.

ASTI 3TX Single, Dual, Triple, Quad Contacting Conductivity Analyzer, Transmitter & Controller.

A summary of the system capabilities are detailed in the conductivity measurement with the 3TX-CON transmitter brochure.

Rosemount 1056 Single and Dual Contacting and Toroidal Conductivity Analyzer, Transmitter & Controller

Rosemount 1057 Single, Dual and Triple Contacting and Toroidal Analyzer

Rosemount 56 Single and Dual Contacting Conductivity Analyzer

Rosemount 5081 Single Contacting Conductivity Analyzer

Rosemount 1066 Single Contacting Conductivity Analyzer

ASTI 3TX Contacting Conductivity Analyzer Wiring Schematic (Single, Dual, Triple or Quad)

1056/1057/56 Contacting Conductivity Analyzer Wiring Schematic (Single, Dual or Triple)

1056/1057/56 Toroidal Conductivity Analyzer Wiring Schematic (Single, Dual or Triple)

HACH / GLI Toroidal Conductivity Analyzers Wiring Schematic (E33, E53, E63, 672E, PRO-E3 & Others)

Our contacting and toroidal conductivity sensors are compatible with most any OEM transmitters. Please inquire to factory if your conductivity transmitter or analyzer is not listed above and we will be happy to supply the appropriate wiring schematic. You should ALWAYS define the planned mating instrument before the time of purchase to ensure compatibility.

Increasing the Accuracy of Conductivity Measurements

Conductance Data for Common Used Chemicals

Basic Theory of Conductivity Measurements