Best reference service lifetime in process industry through proprietary, novel, non-porous, cross-linked, conductive polymer technology; Available in double junction (standard) or triple junction (optional “TJ”) configurations
Rugged industrial grade sensors can operate in a temperature range from -35 to 150 degrees Celsius at pressures up to 200 psig
Base models for general purpose, high temperature resistant, ultra-high temperature resistant, slurry & viscous material resistant, acid/fluoride & HF resistant, pulp & paper resistant, aggressive dissolved gas & volatile organic solvent resistant, Oxidation Reduction Potential (ORP) and saturated sodium (brine) resistant.
Selected optional features include Ammonia gas resistant (“A”), Chlorine gas resistant (“C”), Wide Range -0.5 to +14.5 pH Media Resistant (“V”), Organic Media Resistant (“L”), Solvent Resistant (“TS”), 3-Wire TC (“M”), ACCU-TEMP Fast TC (“X”), Add Protective Tines 4 ea (“GR”), Add Protective Tines 2 ea (“GRO”), Shielded Preamplifier Cable (“BL”).
Available with most any integral temperature compensation element (Pt100 or Pt1000 Standard), Solution Ground Liquid Earth (316SS or Platinum), Dual pH/ORP All-In-One Configuration and Conventional or Differential Analog preamplifier to allow for interfacing with most any existing OEM transmitter.
Quick disconnect IP67 & NEMA 6P rated waterproof and corrosion resistant Q7M/Q7F snap connector option is available for pH sensors and ORP sensors with integral preamplifiers.
Convenient Quick-Disconnect Tri-Clover sanitary fittings allows easy calibration and cleaning from process line or tank.
The PLC or HMI employed can either be customer supplied or else ASTI supplied as a part of a turn-key ready system ready for plug and play field commissioning right out of the box.
ASTI supplied HMI & PLC include options for advanced smart touchscreen controllers with full remote access suitable use in for Class I, Division II hazardous locations as well as Explosion-Proof controller suitable for use in hazardous Class I, Division I EX rated locations. Lower cost instrumentation options also exist for use in safe non-hazardous locations as well as blind installations if no local display is required.
316SS Sanitary Sensor Fitting available in 1.5", 2.0" or 2.5" Tri-Clover sizes (other larger sizes available upon request).
Alternate fittings can be welded to sensor holder upon request. One example is a 1.25" MNPT threaded nipple for high-pressure inline screw-in style installations
Double O-ring design ensures secure seal during operation; Standard material of construction is Viton®-75, with CV75, Simriz® 485 and Kalrez® 4079 Optional
Back of sensor is sealed with watertight cable gland assembly to ensure watertight operation from washdowns, moisture and outdoor installations
Each standard sensor selection and/or special customized sensor design are based upon a thorough review of the customer supplied application information by senior in-house chemists to ensure that the best possible choice of available pH sensor or ORP sensor model and options is made at the lowest possible price configuration which is suitable for the intended process measurement & installation scheme.
pH sensors & ORP sensors are manufactured with rugged RADEL® (Poly-Phenyl-Sulfone, PPSU), KETASPIRE® (Poly-Ether-Ether-Ketone, PEEK) or RYTON® (Poly-Phenylene-Sulfone, PPS) for the sensor body housing material of construction.
The solid state reference is highly resistant to dehydration and our thick wall glass is nearly impervious to cracking, even under high pressure conditions.
Invoked with Alpha Prefix “E” on supported sensor models
5731 Aggressive Dissolved Gas & Solvent Resistant pH sensor
Close-up view of tip with 4 each "GR" thick protective tines
Double sealing O-rings for integrity & safety of installation
Model 5331 RADEL bodied sanitary pH sensor shown with low-profile break-resistant parabolic pH glass element for use in high viscoisty and slurry abrasives type solutions in the without protective tines configuration
Model 5841 PEEK bodied sanitary ORP sensor shown with low-profile ball-style platinum ORP sensing element for use in high viscoisty and slurry abrasives type solutions in the with 4 each "GR" protective tines configuration
APPLICATIONS FOR IOTRON™ IMMERSION SERIES
BUILT-TO-ORDER pH SENSORS & ORP SENSORS
WITH EXTENSIVE CUSTOMIZATION OPTIONS
Measurement in strong acids or bases
Acid fluoride etching solutions
HF waste treatment systems
High Temperatures & Pressures
Examples include ammonium nitrate manufacturing, sugar extraction
Treatment of discharge from processes employing autoclaves
Pulp digesters for Kraft type mills
Bleaching lines for white paper mills
Abrasives and Viscous Processes
Extraction of precious metal ore with floatation tanks and concentrators
Gold extraction circuits with cyanide (batch or continuous)
Cyanide destruction with peroxide and/or sulfur dioxide
Dissolved Sulfides such as hydrogen sulfide gas (H2S), hydrogen sulfide (HS-) or sulfide ion (S2-)
Solvent extraction (SX) with kerosene and other long chain hydrocarbons
Measurement in most Volatile Organic Compounds (VOC) and most Organic Solvents
Biodiesel and ethanol fuels
Processes employing dissolved chlorine (Cl2), chlorine dioxide (ClO2), ammonia (NH3), sulfur dioxide (SO2) and nitric oxide (NO) and nitrous oxide (NO2) sometimes together referred to as (NOx) type gases
Municipal or industrial wastewater treatment
General Purpose pH monitoring or control for discharge compliance
® RADEL, KETASPIRE and RYTON are registered trademarks of Solvay
Sanitary pH Sensor and ORP Sensor Selection Guide
Please select and click on the pH sensor or ORP sensor specification sheet that you wish to download from the selection guide below. The sensor specifications are in PDF format and require the Adobe Acrobrat Reader (see link to the left to download this viewer if you do not already have it installed). Please contact factory if any documentation is missing from this page or else if you have any difficulty to view or open any of the files.
Sensors for Sanitary Tri Clover Installations Requiring Chemical Clean-In-Place (CIP) Sterilization
Description of pH/ORP Sensor Series KYNAR Junction for all 5XX1 Sensors
Sensor Body Housing RADEL®
Sensor Body Housing KETASPIRE®
Sensor Body Housing RYTON®
® RADEL, KETASPIRE and RYTON are registered trademarks of Solvay
Sanitary Sensor Options
All 5X31, 5X41 & 5X51 series pH sensors and ORP sensors are supplied without tines
(no guard) as the standard configuration (default). Four (4) each protective tines ("GR") or 2 each protective tines ("GRO") are available in both the full length 0.5" inches (for pH sensors) or the reduced 0.3" inch length (typically for parabolic pH or ORP sensors).
response (AccuTempTM) temperature compensation option recommended for all sanitary installations
Sensors with integral preamplifiers can be supplied with the rugged field ready Q7M/Q7F NEMA 6P rated quick disconnect snap connector system. See pictures shown below for visualization of this option.
Q7M sensor end of cable snap connector detail close-up view
Q7F-Xm-TL Female Q7F snap to tinned leads extension cable
Q7M/Q7F snap connectors are NEMA 6P rated when interfaced.
Platinum Solution Ground with 2 each reference half-cells
allows for simultaneous use on two completely separate input channels or transmitters
Add 4 each Protective Tines (for HOT-TAP Series Only)*
Add 2 each Protective Tines (for HOT-TAP Series Only)*
Shielded & Reinforced Preamplifier Blue Cable*
Upgrade from standard Viton® -75 to
CV75, Simriz® 485 or Kalrez® 4079*
“W”, “U” or “K” respectively
* Additional charges apply for these options. Not all options available on all models (inquire to factory).
® Viton and Kalrez are registered trademarks of DuPont. Simriz is a registered trademark of Freudenberg Sealing Technologies (SIMRIT).
Replacement pH & ORP Sensors
For Transmitters that support and/or require Integrated Preamplifiers
The instruments listed below require and/or support integral preamplifiers. Sensors to mate with these OEM pH & ORP transmitters are supplied with the appropriate integrated temperature compensation element, solution ground & OEM compatible high-impedance CMOS operational amplifier (a.k.a. preamplifier) as may be required to ensure full compatibility and optimal performance. Some manufacturers and analyzer models can support both sensors with or without preamplifiers on the same instrument. A sensor hook-up schematics for interfacing to the given OEM pH/ORP transmitter is supplied with each sensor, and some of the most common wiring schematic are posted on our website (please inquire for any not listed).
Replacement pH & ORP Sensors
For Transmitters DO NOT SUPPORT Integrated Preamplifiers
The instruments listed below do no support preamplifiers. Sensors to mate with these OEM pH & ORP transmitters are supplied with the appropriate internal temperature compensation and/or solution ground signals to ensure compatility. A sensor hook-up schematics for interfacing to the given OEM pH/ORP transmitter is supplied with each sensor, and the some of the most common wiring schematic are posted on our website (please inquire for any not listed). If longer cable runs may be required for your planned installation, it is recommended to select a transmitter that supports preamplifiers (see list to the left).
Fully Supported Hardware - FULL COMPATIBILITY
pH & ORP Transmitters
OEM pH & ORP Sensors *
Rosemount Analytical Liquid Division
A Part of Emerson Process Management
* ASTI offers pH & ORP sensors compatible with the transmitters listed above as an alternative to mating OEM pH & ORP sensors detailed.
Trademarks (indicated with TM) are registered to the respective corporations as listed above.
Most of the pH/ORP transmitter models listed also have a both contacting conductivity and toroidal (inductive contactless) conductivity transmitter counterpart to which ASTI can also supply alternative sensors to the OEM model sensors. Please inquire for any such conductivity retrofit and replacement sensor needs as well as for the pH & ORP measurements.
The manufacturers and models detailed on this webpage are not a complete listing of the supported OEM pH & ORP transmitters, analyzers and controllers to which ASTI can retrofit our replacement pH, ORP and conductivity sensors.