Valve Retractable pH & ORP Sensors

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).

ASTI offers unique solutions for process measurement problems. Features and options are itemized below:

• Leading novel and proprietary solid-state industrial pH sensor & ORP sensor design and technology combined with built-to-order extensively configurable manufacturing offer the best possible service lifetime at the most cost effective price point. Review the Competitive Advantages of Design & Technology for IOTRON™ & ZEUS™ Industrial pH & ORP Sensors PDF for details.
• 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.
• HiQDT SMART DIGITAL MODBUS RTU pH & ORP SENSORS FOR DIRECT CONNECTION TO ANY PLC, HMI, SCADA or any other data acquisition or control device that can serve as the MODBUS RTU master.
  • 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.
• Thick-wall break resistant low-profile parabolic pH glass element for slurry and viscous type process media extends service life for tough installations
  • This type of rugged parabolic thick-wall, low-profile, break-resistant pH glass is now standard for all X3XX series pH sensors.
• Novel extreme dehydration resistant reference technology option allows sensor to endure prolonged exposure to dryness as well as intermittent wet and dry operation conditions for batch applications and uncertain fluid levels
  • Invoked with Alpha Prefix “E” on supported sensor model

Shown below is a 5X31 RADEL series pH sensor with 316SS sensor holder close-up

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 above 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 (S^2-)
• 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 (NO_x) type gases
• Municipal or industrial wastewater treatment
• General Purpose pH monitoring or control for discharge compliance

View Selected Case Studies as Examples of Selected Applications

TECHNICAL CAPABILITIES OF IOTRON™ TWIST LOCK QUICK DISCONNECT
BUILT-TO-ORDER pH SENSORS & ORP SENSORS
WITH EXTENSIVE CUSTOMIZATION OPTIONS

• Low pH range down to -0.5 (with ASTI calibration procedures and buffers)
• High pH range up to 14.5 (with ASTI calibration procedures and buffers)
• Low Temperatures down to -15 degrees Celsius (°C)
• High Temperatures up to 150 degrees Celsius (°C)
• High Pressures up to 100 psig
• Insertion depths up to 42 inches (~107 cm) with HOT-TAP valve retraction assembly
• Insertion depths up to 6 feet into tank or line with compression fitting assembly installation scheme
• 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

PLEASE INQUIRE FOR ANY CAPABILITIES NOT LISTED HERE

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 (Iotron^TM AccuTemp^TM). 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).

APPENDIX “A”