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Turtle Tough GP-VI Submersible pH Sensor

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Acid/Fluoride Resistant, Slurry and Sulphide Resistant

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Product Description

GP-VI Submersible pH Sensor

SKU: TT-GP-pH-2006

The GP-VI Submersible pH Sensor is designed to go under… completely!  The unique back end assembly allows sealing to be run down the length of the cable; completely isolating it from the process media and eliminating the risk of ingress or poisoning. This allows for very long life at deep submersion in even the most aggressive processes without needing to seal the sensor onto an immersion rod.  The flexible cable sealing actually allows a sensor to be lowered into a tank or process directly by the cable itself, without any supporting structure. Turtle Tough have design unique and proprietary sensor guide tubes to facilitate this optional installation method, eliminating the need for heaving and cumbersome immersion rods.

The RYTON body plastics provide a cost effective resistance to chemical attack, and the high capacity KYNAR reference supports both chemical and temperate resistance.  Utilising our proprietary toughened glass the sensor is ideal for slurries and abrasive media as well as being capable of resisting acids or fluorides that may chemically attack the glass.

The GP-VI Submersible pH Sensor is a popular configuration and demanded by many applications. As such this sensor is available in many optional configurations including high impact break resistant glass, ultra high temperature, dissolved gas and volatile organic solvent resistant, high HF acid resistant, brine and extreme dehydration resistance.

This sensor is ideal for any applications where process media containing free sulphide species such as hydrogen sulphide gas (H2S), hydrogen sulphide (HS-) or sulphide ions (S2-). Any measurement where aggressive chemical cleaning is needed to remove fouling or low maintenance operation is required with minimal cleaning and recalibration.

Key Features

  • 6m cable
  • RYTON Body, ¾” x 1” MNPT
  • -5°C to 105°C
  • Submersible Water proofing & Cable Sealing
  • Acid/Fluoride Resistant
  • Slurry & Sulphide Resistant
  • High Capacity KYNAR Reference
  • Proprietary toughened glass
  • Wide range of optional configurations
  • Optional “Sensor Guide Tubes” eliminate need for immersion rod
  • Digital smart sensor technology (optional)
    • No hard wiring – plug-n-play connectivity
    • Sensor stores calibration data, analyser configuration and sensor history
    • Hot-swap for quick sensor change-out
    • No interaction with analyser – sensor data auto uploads

Digital Smart Sensor Technology (DSST)

This sensor is available with our digital smart sensor technology. This plug and play sensor has a quick connect fitting, eliminating the need for hard wiring to the analyser. On-board sensor memory allows the storage of calibration dataanalyser configurations and sensor service history. This allows the sensor to be conveniently maintained and calibrated off-site or in the laboratory and pre-programmed with calibration data and analyser configurations.  This stored information automatically uploads to the analyser upon connection and eliminates the need for any interaction with the analyser, greatly simplifying the change-out of sensors. A service log stored on the sensors is ideal for maintenance and quality assurance records.

Additional Information

Additional Information


General Specifications

Description GP-VI Submersible pH Sensor
Part Number TT-GP-pH-2006
pH Range 0 to 14 pH
Temperature Range -5 to 105°C
Pressure 6.9 to 690 kPa (1 to 100 psig)
Body Type RYTON (Poly-Phenylene-Sulfone) with ¾” Front End – 1” MNPT Back End MNPT
Junction Material KYNAR (Poly-Vinylidene-Fluoride)
Dimensions 216mm Length, Maximum Diameter 33.3mm
Cable Length 6m
Temperature Compensation Pt1000
Preamplifier Not Fitted
Waterproofing Immersible, Submersible if threaded on sealed immersion rod with sufficient sealing tape
Connection Hard Wired Tinned Leads for Sensor & TC
Special Features Acid/Fluoride, Slurry, Sulphide and Organic Resistant

pH Sensor Specifications

Measuring Glass Type Hemispherical, Green Glass (MUGG)
Glass Dimensions 8.0mm (0.315”) Diameter
Initial Impedance < 800 M Ohms @ 25°C
Sodium Ion Error < 0.15 pH in Na⁺ solutions at pH 14.00
Acidic Errors < 0.05 pH in HCl solutions at 0.00 pH

Reference System Specifications

Type Double Junction
Reference Half Cell Ag/AgCl, Saturated KCl
Primary Junction Porous Ceramic, Saturated KCl in Cross-linked polymer, interfaced to Secondary Junction
Secondary Junction Solid-State Non-Porous Cross-Linked Polymer embedded in high capacity Kynar Support Matrix. Holds excess KCl assuring saturation at all temperatures for stability & long sensor service life.

Application Specifications

Recommended Applications Any process media containing free sulfide species such as hydrogen sulfide gas (H2S), hydrogen sulfide (HS-) or sulfide ions (S2-). Any measurement where aggressive chemical cleaning is needed to remove fouling or low-maintenance operation is required with minimal cleaning and re-calibration.

Analyser / Interface

All Turtle Tough pH Analysers
Storage Item should be kept at room temperature with closed protector cap, filled with storage solution in an upright position. Shelf life warranted for 12 months from the date of purchase.
Application Aquaculture, Chemical Processing , Food & Dairy, Laboratory, Pulp & Paper, Soil & Fertilisers, Water & Wastewater, Mining Slurries, High Cyanide, Titanium Dioxide, Solvent Extraction
Duty Cycle Moderate, Heavy, Ultra


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