Industrial pH, ORP, Ion Selective (ISE), Conductivity & Dissolved Oxygen (DO)

Measurement Product Line Overview

Industrial pH/ORP Sensors

ZEUS pH Sensors

Industrial Ion Selective (ISE) Sensors

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Rugged line of custom built-to-order analog & smart digital industrial pH & ORP sensors for inline, immersion & submersible, twist lock quick disconnect, valve retractable and sanitary installations for wide range of applications from slurry/viscous solutions, sulfides, high-temperature, organic applications with various solvents, HF etching and treatment systems & many more. The pH sensors & ORP sensors with analog preamplifiers are available with optional rugged field ready quick disconnect snap connectors. Smart digital pH & ORP sensors always come standard with NEMA 6) rated quick disconnect snap connectors. ZEUS™ pH SENSORS FOR TOUGH INDUSTRIAL APPLICATIONS ARE TYPICALLY IN STOCK FOR IMMEDIATE DISPATCH TO SOLVE YOUR PROBLEM INSTALLATION RIGHT AWAY. ZEUS™ Industrial Grade pH sensors are designed and built with Extremely Rugged Construction to handle the Toughest Severe Service Process Inline, Immersion or Submersible Installations. Analog ZEUS™ pH sensors available in Universal configuration with temperature compensation & liquid earth solution ground only or else with integral conventional or 5-wire differential integral preamplifier configurations. Smart digital ZEUS™ pH sensor configuration interfaces the modular cost-effective intelligent 3TX-HiQ-pH digital pH transmitter. Most complete and rugged line of industrial ion selective sensors offered anywhere.  Available in inline, immersion, submersible, twist lock quick disconnect and sanitary configurations.  Complete ISE systems including sensor and transmitter are supplied complete, including a calibration scheme that is optimized for your intended application use. Validation of process for feasibility is required for each ISE measurement.

Industrial Conductivity Sensors

Industrial Dissolved Oxygen Sensors

Industrial Instrumentation

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Contacting and torodial (inductive contactless) industrial conductivity sensors for use up to 205 degrees Celsius and 500 psig. Suitable for measurements from 0.55 microSiemens and up to 2,000 milliSiemens. Applications from ultrapure water to strong acids, bases and electrolytes. Materials of construction include 316SS, Monel, Titanium, Hastelloy C-276 (and other) for the electrodes and TEFLON, CPVC, KYNAR and PEEK for the insulator on contacting conductivity sensors (other materials upon request). Cell constants available from 0.01 to 20.0 and anywhere in between. Rugged industrial grade galvanic dissolved oxygen (DO) sensors offer high accuracy measurement at a very low cost of commissioning as well as a low residual cost of ownership. Unique optional thick-membrane option is ideal for heavy slurry media and rugged NPT submersion sealing assembly ensures very long sensor life even with severe service conditions and handling. Convenient quick disconnect termination option allows for simply maintenance for long cable runs and tricky installation setups. Offering a wide range of instrumentation options from low-cost 2-wire and 4-wire transmitters and controllers all the way to intrinsically-safe explosion-proof & programmable instrumentation for single, dual and triple channel pH, ORP, ion selective (ISE), conductivity and dissolved oxygen (DO) liquid analytical measurements.  Options include PID & TPC relay controllers, HART, Fieldbus, Profibus & MODBus digital outputs as well as multiple isolated, configurable, reversible & scalable 4-20 mA analog current loop outputs. Available in IP65, IP67 and NEMA 4X rated enclosure options

HOT-TAP Valve Retractable Assemblies

Submersible Assemblies with Waterproofing Seals  
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The third generation valve retraction HOT-TAP assemblies allow for insertion and removal of the sensor without shutdown or separate isolation of the process line or tank. These HOT-TAP assemblies are available for 5X31, 5X41, 5X51 & 5XX0 sensor types. Available in 316SS material of construction standard with TEFLON seals and ferrules with Viton or Kalrez O-rings ensure a secure water tight even at high temperatures (150 deg Celsius) and pressures (up to 150 psig max). Custom materials of construction and configurations are available upon request. The longevity of the pH, ORP and ion selective (ISE) sensors can be significantly elongated for some applications using our waterproofing sealing options for a variety of applications. In particular, for those that will be completely submersing the sensor or for applications where the back of the sensor will be exposed to moisture or facility washdowns these waterproofing seals are a must. Inquire to the ASTI factory to determine if a waterproofing option is required for your installation type and if required the most suit bale selection. Special materials of construction are available for our waterproofing seals upon request.  

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Please keep in mind that the links above do not represent the entirety of the ASTI industrial product line but rather the most commonly sold offerings. For example, please inquire directly to the factory for any dissolved oxygen and temperature measurement needs in addition to the pH, ORP, ion selective (ISE) and conductivity electrochemical products links detailed above. The valve retractable and submersible options are available for most industrial measurement product lines although you should inquire to the factory to confirm that it is supported for your specific requirement.

Our CASE STUDIES are selected examples that illustrate just some of the capabilities of our novel modular, built-to-order, engineered electrochemical sensors & instrumentation as they are used in a wide variety of industries. A short description of each of our product areas is below as an overview of our offerings. Many more feature and functionality are available that detailed in our case studies or that matter the product webpages on this website. Please inquire to the factory with your specific needs so that we can optimized a measurement solution for your exact application.

Advanced Sensor Technologies, Inc.
603 North Poplar Street, Orange, California 92868-1011 USA
Tel: + (1) 714-978-2837  Toll-Free: + (1) 888-969-2784 Fax: + (1) 714-978-6339 Website:
Manufacturing Long-Lasting Industrial pH Sensors, ORP sensors, Ion Selective (ISE) Sensors, Conductivity Sensors and Dissolved Oxygen (DO) Sensors for Difficult Inline Process Control Measurement and Monitoring Applications
Offering industry leading product developments and research services for OEM manufacturers and resellers requiring pH, ORP, Ion Selective (ISE), Conductivity and Dissolved Oxygen (DO) Measurements for
Laboratory, Medical In-Vitro and In-Vivo Applications and Industrial Inline, Immersion, Submersible, Sanitary and HOT-TAP Valve Retractable Measurements