Endress + Hauser Compatible pH Sensor


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SKU: TT-EH-pH-2204.
Category: .

Endress + Hauser Compatible pH Sensor

  • Endress + Hauser compatible pH Sensor
  • Outlasts OEM by up to 10 times
  • 6m cable
  • RYTON with ¾” MNPT Front & Back End
  • -5°C to 105°C
  • Double Junction (triple optional)
  • Coat resistant materials reduce fouling
  • Acid/Fluoride Resistant
  • Ammonia, Chlorine and Sulphide Gas Resistant
  • High Capacity KYNAR Reference
  • Special glass to suit Endress + Hauser
  • Description
  • Downloads
  • Application & Use
  • Case Studies

The TT-EH-pH Endress + Hauser pH Sensor

The TT-EH-pH Endress + Hauser pH Sensor is an analogue pH sensor that is compatible with all Endress + Hauser Analysers that have an analogue input. For more than 20 years our OEM replacement sensors have provided our customers with superior performance over the original product in virtually every aspect.  The chemical and physical resistance provides a superior service life of up to 10 times that of the OEM product. In nearly all cases our customers report less drift and significantly less maintenance and the reason they keep using Turtle Tough... a significantly lower cost of ownership.

The high capacity solid state KYNAR reference junction provides superior chemical resistance to sulphides and other dissolved gasses. The standard sensor utilises a double junction however a triple junction is available as a special order. The sensor is built with PT1000 integrated temperature compensation element so that it interfaces seamlessly with the E&H Analysers.

For extreme applications that require our extreme slurry/abrasion resistant, zinc resistant, or High HF resistant glass a different analyser will need to be considered.

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.

Application Difficulty Index: 7/10

This sensor is design for difficult applications with a difficulty index up to 7/10

Maintenance FREE

Turtle Tough pH and ORP sensors are a completely sealed assembly and are sealed for life.  This provides extreme process resistance as well as a totally maintenance free sensor which greatly increases sensor life and reduces labour costs.  A Turtle Tough sensor does not contain any O-rings, washers, gaskets, or serviceable components/assemblies. It does not require refreshing or refilling of electrolyte. The only requirement is regular cleaning in accordance with our recommended cleaning schedule for your application. Regular cleaning will prolong the life of your sensor and ensure hassle free operation.

Recommended Cleaning Schedule

The recommended cleaning interval is based upon the difficulty index for your application.

Recommended Cleaning Schedule

Application Difficulty Rating

Cleaning Schedule

1-3

Monthly

4-6

Fortnightly

6-7

Weekly

8-9

Twice (2x) per week

10

Daily

If a Turtle Tough pH/ORP sensor response slows down, it is most likely the result of a fouled reference or dirty coated glass.  Cleaning should be performed as required and will vary across  applications.  See cleaning instructions.

Storage

The standard shelf life for all Turtle Tough pH and ORP sensors is one year from the date of shipment. Sensors stored longer than this period may still be functional but are no longer under warranty. Sensors should be stored in a cool, dry location with the sensor tip (sensing element) oriented toward the ground.  All sensors come standard with a conditioning solution in the cap. This conditioning solution is 50% pH 4 buffer and 50% saturated potassium chloride (mixed by volume). The sensor cap should be kept tightly affixed to the sensor body and sealed with common PVC tape when the sensor is not in use. Sensors that are to be returned for shelf life warranty claim must have the original sensor cap and conditioning solution intact to be eligible for warranty replacement.

Avoiding Thermal Shock

For high temperature applications where process liquid exceeds 70°C you will prolong the life of the sensor by avoiding thermal shock. Thermal shock occurs when you rapidly change the temperature of the sensor from hot to cold or vice versa. This rapid expansion/contraction of sensor components can damage internal elements and cause micro-cracking that will accelerate the rate of deterioration. In extreme cases it will crack the sensing element causing a total failure.  To avoid this sensor should be heated or cooled slowly during removal/insertion and cleaning and calibration processes. Consult your Turtle Tough representative for techniques to avoid thermal shock.

Conditioning After Calibration

After the sensor has been cleaned, it must be thoroughly rinsed with deionised water to remove any residual cleaning reagents. The sensor can then be soaked in pH 4 buffer to recondition the pH and reference elements. Some sensors will also require conditioning in saturated potassium chloride if the reference junction has been depleted of the ions in the solid state conductive polymer (typical for clean water applications). Condition the sensor in saturated potassium chloride and/or pH 4 buffer for whatever period of time is required to achieve optimal calibration results.

Please refer to your sensor manual for correct installation, maintenance and use.