Shown above is a complete HOT-TAP insertion assembly with an ORP sensor installed from the process view
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
Ideal for organic manufacturing processes employing volatile solvents& pressurized vessels requiring safe HOT-TAP use
Standard Viton®-75 O-rings with CV75, Simriz® 485 & Kalrez® 4079 optional as required for material compatibility
® RADEL, KETASPIRE and RYTON are registered trademarks of Solvay
® Viton and Kalrez are registered trademarks of DuPont. Simriz is a registered trademark of Freudenberg Sealing Technologies (SIMRIT).
pH Sensors & ORP Sensors for HOT-TAP Valve
Retractable Installations
ASTI offers unique solutions for process
measurement problems. Features and options are itemized below:
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) configurations
Rugged industrial grade sensors can operate in a
temperature range from -35 to 150 degrees Celsius at pressures up to 200 psig (100 psig max for HOT-TAP insertion)
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.
Available end of cable terminations include tinned leads, BNC connector for pH sensors and ORP sensors without integral preamplifier.
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.
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.
Available in smart digital configurations for use with intelligent pH/ORP digital transmitters. Detailed information about this smart digital type configuration option can be found in the separate 3TX-HiQ digital pH/ORP measurement product webpage.
Convenient HOT-TAP 316SS sensor holder allows for cleaning and calibrations without removing fitting
Double O-ring design ensures secure seal between sensor and holder during operation; Standard material of construction is Viton®-75, with CV75, Simriz® 485 and Kalrez® 4079 Optional .
Back of sensor insertion tube available sealed with watertight cable gland assembly to ensure watertight operation and protection from washdowns, moisture and outside 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 conductive polymer reference system 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 model
Shown to the left is a complete 2" NPT HOT-TAP Ball Valve Retractable Assembly including:
316SS Sensor Holder with 5X31 series pH/ORP sensor installed with sealing O-rings
36 inch 316SS extension Tube for insertion up to 18 inches into process (max 42 inch insertion with 60 inch extension tube) with sealing cable gland for watertight cable
2 Inch full port ball valve HOT-TAP assembly with purge port (also available in 1.5 inch version)
1" MNPT X 1.00 inch compression fitting with Viton Sealing O-ring (Kalrez Optional)
FOR DETAILS ON HOT-TAP BALL VALVE RETRACTABLE HARDWARE CLICK HERE
Shown below is a 5X31 RADEL series pH sensor with 316SS sensor holder close-up
Shown below is a 5841 PEEK series ORP sensor close-up with sealing O-rings installed
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
Mining Slurries up to 50% solid & particulate content
Solids Content up to 12% consistency pulp
Fluorides up to 50,000 ppm and -0.5 pH
Support for measurement in most dissolved gases up to saturation
Examples include chlorine, chlorine dioxide, ammonia, sulfide gases
Cyanides up to 10,000 ppm
Almost All Organic Chemical Mixtures
Minimum ~1% aqueous content required to ensure stable readings
Clean in Place (CIP) processes with hot acid and hot base for food and beverage and pharmaceutical use
Sterilization with Peroxide (H2O2) and Ozone (O3)
Up to 600% Saturation Dissolved Oxygen (O2)
Fully submersible assembly that can be installed by thick reinforced vinyl tubing seal on cable
For best results the use of a suitable immersion tube, standpipe or guiderod is recommended to fix the installation location and to minimize mechanical related damage is recommended
Material of Construction for Sensor Body and Dimensional Drawings for pH Sensors & ORP Sensors
For use with 3rd Generation HOT-TAP Valve Retractable Assemblies
5X31 Series Sensors - Body Housing RADEL®
Poly-Phenyl-Sulfone, PPSU
5X41 Series Sensors - Body Housing KETASPIRE®
Poly-Ether-Ether-Ketone, PEEK
5X51 Series Sensors - Body Housing RYTON®
Poly-Phenylene-Sulfone, PPS
HOT-TAP Valve Retractable pH Sensor Dimensional Drawing 5-1
Hemispherical pH Glass Element
50X1 Series General Purpose & Wide Range Resistant
51X1 & 52X1 Series High Temp & Ultra-High Temp Resistant
54X1 Series Acid, Fluoride & HF Resistant
56X1 Series hydrogen sulfide gas (H2S), hydrogen sulfide (HS-) or sulfide ion (S2-) Resistant
57X1 Series Aggressive Dissolved Gas & Volatile Organic Solvent Resistant
59X1 Series Saturated Sodium (Brine) Resistant
Valve Retractable 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 3rd Generation HOT-TAP Valve Retractable Hardware Assemblies
Description of pH/ORP Sensor Series KYNAR Junction for all 5XX1 Sensors
Sensor Body Housing RADEL®
Poly-Phenyl-Sulfone, PPSU
Sensor Body Housing KETASPIRE®
Poly-Ether-Ether-Ketone, PEEK
Sensor Body Housing RYTON®
Poly-Phenylene-Sulfone, PPS
® RADEL, KETASPIRE and RYTON are registered trademarks of Solvay
Valve Retractable Sensor & Assembly 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).
Contact the ASTI factory to decide which guard configuration is most appropriate for your planned installation.
Fast
temperature compensation response may be desired for some installations with variable temperature conditions (IotronTM
AccuTempTM). The ACCU-TEMP ("X") option is recommended for most HOT-TAP valve retractable and compression fitting only installation for best temperature compensation.
Compression fitting only assembly configuration shown above with 5X31 series sensors, 316SS sensor holder, 12 inch extension tube, 1"MNPT X 1.00"O.D. compression fitting and sealing cable gland. This installation style is ideal for batch processes where the process is periodically shut-down and the assembly can be periodically removed from service without the use of a ball valve for location isolation. DOWNLOAD A SAMPLE INSTALLATION DRAWING for this described compression fitting only installation approach for the 5X31 series type sensors.
1.25" MNPT inline 316SS fitting shown above with 5X3 series sensors, 3/4"X1/2" reducer bushing and sealing cable gland. This installation style is ideal for installations where plastic threaded sensors are insufficient for the process conditions due severe process flow, pressure or mechanical wear. Special order options include welding the 1.25" MNPT nipple further back on the fitting to allow for a deepr insertion into the process (minimum order quantity MOQ may apply for special order options).
Platinum Solution Ground with 2 each reference half-cells
allows for simultaneous use on two completely separate input channels or transmitters
Addition*
“PtD”
3-wire TC*
“M”
Add 4 each Protective Tines (for HOT-TAP Series Only)*
“GR”
Add 2 each Protective Tines (for HOT-TAP Series Only)*
“GRO”
Shielded & Reinforced Preamplifier Blue Cable*
“BL”
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
Manufacturer
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.