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 pricepoint. Review the Competitive Advantages of Design & Technology for IOTRON„¢ & ZEUS„¢ Industrial pH & ORP Sensors webpage 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 œTJ) configurations
Rugged industrial grade sensors can operate in a temperature range from -35 to 150 degrees Celsius at pressures up to 150 psig for 3/4" MNPT screw-in type inline style installations
The solid state reference is highly resistant to dehydration and our thick wall glass is nearly impervious to cracking, even under high pressure conditions.
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 (œA), Chlorine gas resistant (œC), Wide Range -0.5 to +14.5 pH Media Resistant (œV), Organic Media Resistant (œL), Solvent Resistant (œTS), 3-Wire TC (œM), ACCU-TEMP Fast Response Temperature Compensation (TC) Element (œX), 2 each Protective Tines Only Configuration (œGRO), No Protective Tines Configuration (œNG), Shielded Preamplifier Cable (œBL).
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.
Back of sensor 3/4" MNPT and 1" MNPT threads can be sealed with waterproofing option for use in immersion or submersible type applications as well as for inline use. All inline, immersion & submersible sensor series except the 2X12 & 6X11 are suitable for immersion and submersible type installations since they come standard 4 each protective tines as the default configuration. It is recommended to also consider selecting a Waterproofing Option for Fully Submersible Assemblies. Inline, immersion & submersible sensor series are available in 2 each only protective tines configuration ("GRO") for ease of cleaning for process measurements where extensive buildup is common as well as the no protective tines configuration ("NG") for cases where this is desirable to minimize fouling build-up on the measuring tip (typically only used in conjunction with the low-profile thick-wall break-resistant parabolic style pH glass configurations).
Wrench flats feature is standard for 3/4"-1" MNPT series pH sensors and ORP sensors (6X52, 6X51, 6X31, 6X41) and knurls feature is standard for 3/4"-3/4" MNPT series pH sensors and ORP sensors (6X53, 6X54, 6X32, 6X42 and 2X12, 6X11, 6X13, 6X12) to allow for securing sensor into threaded 3/4" FNPT inline process connection or 3/4" FNPT and 1" FNPT immersion tube without damaging sensor body.
Care must be taken not to over-tighten any sensor to avoid damage during commissioning or insertion and removal from process for cleaning, recalibrating or replacement during maintenance. Consult ASTI factory for assistance to ensure best practice care and use.
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 sensor body housing materials of construction ranging from cost-effective Chlorinated-Polyviny
l-Chloride (CPVC) for simpler measurement requirements to rugged RADEL® (Poly-Phenyl-Sulfon
e, PPSU), KETASPIRE® (Poly-Ether-Ether-K
etone, PEEK) or RYTON® (Poly-Phenylene-Sul
fone, PPS) to handle even the most difficult field process measurement applications.
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 œE on supported sensor mode
Special œSelf-Powered pH sensor configuration allows for extended cable lengths up to 1,000 feet, bridging leads across terminal strip, support for quick disconnect snap connectors and use in noisy electrical areas with pH transmitters that do not support preamplifiers: