VERSATILE ELECTRODE GRT1120K9

The GRT1120-K9 pH electrode is the “versatile adapter king” for complex media monitoring! Ordinary electrodes either have a single interface that is difficult to replace, are prone to clogging and require frequent maintenance, or respond slowly to data drift in industrial applications like wastewater treatment and chromium removal through electroplating or in measuring high viscosity suspensions and protein-containing viscous liquids. This flexible arrangement has dual interfaces, different lengths, dual sheaths, and a new sensitive film+anti-blocking liquid interface structure. Maintenance-free and able to directly replace foreign electrodes, it excellently covers challenging working conditions in environmental protection, chemical industry, electroplating, and other industries, making viscous sewage and industrial media assessment accurate and worry-

★★★★★

  • Short delivery time
  • Better price
  • Customizable parameters

Features

  • It adopts gel dielectric and two-point ceramic core liquid interface, double salt bridge reference structure, and can be directly used in industrial processes with high viscosity suspension, emulsion, protein and other liquid parts that are easy to block;
  • Adopting a new type of glass sensitive film, with fast response and good stability;
  • No need to supplement dielectric, low maintenance required;
  • Adopting PG13.5 threaded socket, it can be used for electrode exchange abroad;
  • Electrode lengths of 120, 150, 200, 250, and 300mm can be selected as needed;
  • Used in conjunction with 316L stainless steel sheath or PVC sheath.

Specifications

ParameterValue
pH Range0-14
Temperature Range0-60℃
Pressure Range0-0.3 M Pa
Zero potential7±0.5
Theoretical percentage slope≥ 95%

Core product advantages

Anti blocking and anti sticking without jamming: gel electrolyte+two-point ceramic core liquid interface, designed for viscous media and sewage, suspended particles and proteins are not easy to stick and block

Fast response and strong stability: The new glass sensitive film has low internal resistance, fast response, zero potential of 7 ± 0.5mV, small data drift, and reliable measurement accuracy

Maintenance free and worry free: No need to replenish electrolytes, minimal maintenance required, only simple cleaning and calibration needed per week, reducing on-site operation and maintenance costs

Flexible and versatile installation: 120/150/200/250/300mm with multiple lengths to choose from, 316L stainless steel/PVC double sheath, suitable for different installation depths and corrosive media

Wide adaptability to working conditions: 0-60 ℃ working temperature, 0-0.3Mpa pressure resistant design, capable of withstanding temperature and pressure fluctuations in conventional industrial working conditions without failure

Accurately adapting to the scene

  • Online tracking of sewage treatment: pH levels in biochemical and industrial wastewater are checked all the time, designs that prevent clogging are used to handle impurities that are not dissolved, there are two protective sleeves for different corrosive settings, and all of this gives precise information to see how well the sewage treatment works.
  • Electroplating use: monitoring of the plating solution, online chromium removal process tracking, resistance to erosion by moderately impure substances, adjustable length to fit plating tank depths, helping to control the reaction process and meet emission standards.
  • Measurement of thick substances: finding the pH of thick liquids and semi-solids like pulp, starch, mud, sugar, and so on, while preventing sticking and blocking so that the measuring tool doesn’t stick to the substance and the quality control is done all the time during production.
  • Multi-scenario adaptation in the chemical industry: chemical drugs, dyes, and mining media that are hard to watch with two different interfaces, different lengths, and two protective sleeves that can fit on pipelines and containers and work with different types of production equipment.

Usage and Maintenance Guide

Installation key points

  • Open box inspection: Confirm that the electrode sensitive bulb has no mechanical damage or bubbles. If there are bubbles, they can be removed by gently shaking vertically; Select the corresponding length of electrode according to installation requirements;
  • Sheath matching: Choose 316L stainless steel sheath (strong corrosive medium) or PVC sheath (conventional medium) according to the characteristics of the medium to ensure compatibility;
  • Interface installation: Fixed with PG13.5 threaded interface, can be paired with protective sleeve or cable head, choose pipeline or container installation method, tighten and fix to avoid shaking;
  • Waterproof protection: If the connection between the electrode wire and the electrode is not waterproof, it needs to be sealed with sealant, waterproof joint or heat shrink tubing to prevent the invasion of medium or water vapor;

Maintain

  • Daily cleaning: Rinse the electrode with distilled water and dry the filter paper before and after measuring. This will keep dirt and other things from entering into the measured medium. Once a week, clean the liquid interface to keep everything working well.
  • Idle storage: After washing, cover it with a 3.3mol/L KCL solution and preserve it in a dry, well-ventilated spot so the delicate bubbles don’t dry out.
  • Sediment treatment: Soak the glass film in weak hydrochloric acid for 5 to 10 minutes, then rinse it off if it looks foggy or glued together. Don’t scratch the delicate film with a brush that has strong bristles;
  • Calibration cycle:It is best to calibrate the instrument once a week, especially when it is used in strong acids or thick liquids, to make sure the measurements are correct. Stick to the calibration frequency; don’t linger in distilled water, protein solutions, or acidic chloride solutions for too long, and don’t touch organic silicone oils because they could damage the electrodes.

Sensor diagram illustration

120mm 40mm
  1. After opening the packaging, check whether there is mechanical damage to the sensitive bulb and electrode body of the electrode;
  2. Remove the sensor protective cover and check if there are any bubbles in the sensitive bulb of the electrode. If so, gently shake the sensor in a vertical plane to remove the bubbles;
  3. Select the corresponding sensor sleeve or cable head for installation according to different electrodes;
  4. The connection between the sensor wire and the sensor is not waterproof, please make sure to do a good job of waterproofing.

Wire stripping instructions

Attention

  • The outer layer of the transparent central axis is covered with a conductive rubber layer and a metal mesh layer. When stripping, first strip the metal mesh layer into the metal mesh as shown in the picture, and be sure to removal of conductive black skin on the transparent central axis;
  • The cable extends to the host without any contact points except for a dedicated junction box.

Technical Support

The core advantage is adaptability without blind spots! Whether the on-site equipment is K9 socket or PG13.5 threaded interface, it can be directly docked without the need to purchase additional adapters; When replacing foreign electrodes, there is no need to modify the equipment interface, and it is compatible with more brands and models of pH meters, reducing the cost and difficulty of equipment upgrades or accessory replacements, especially suitable for industrial scenarios where multiple devices are mixed.

Correctly matching based on how corrosive the medium is: 316L stainless steel sheath is better for materials that are very corrosive, like chromium-containing electroplating solutions and acidic chemical raw materials, because it lasts longer and is less likely to corrode. PVC sheath is a good choice for materials that are neutral or only slightly corrosive, like starch solution or regular household sewage, because it is less expensive and easier to install. Don’t use PVC sheaths in regions where they are particularly corrosive, or else the electrodes will fail because the sheath will break.

The core advantage of the new glass sensitive film is “fast response+strong stability”! Its internal resistance is lower, and when facing viscous media and low conductivity sewage, it can quickly capture pH changes without response delay; At the same time, the material stability is better. Under the working condition of 0-60 ℃, the zero potential drift is small, and it can still maintain a theoretical percentage slope of ≥ 95% after long-term use. Compared with ordinary sensitive membranes, it has better measurement accuracy and service life.

Not easy to block! The pore design at the junction of two ceramic cores can block most of the sludge particles, and the fluidity of gel electrolyte can reduce the adhesion of impurities. If there is slight blockage (slow reading response), the processing steps are as follows: rinse the liquid interface with distilled water, soak it in 3.3 Mol/L KCL solution for activation for 2 hours; When the blockage is severe, a soft bristled brush can be used to gently scrub the interface surface, then soak it in dilute hydrochloric acid for 5 minutes, rinse it clean, and calibrate it.

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The GRT1120-K9 pH electrode, with its core advantages of “dual interface universal, anti blocking and maintenance free, and multi scenario adaptation”, perfectly solves the adaptation problems and blockage pain points in viscous media and sewage monitoring. From continuous monitoring of sewage treatment to process control in the electroplating industry, from production of viscous media to replacement of imported equipment, it can flexibly adapt and stably output accurate data. The flexible configuration of dual interfaces, multiple lengths, and dual sheaths not only reduces the cost of replacing imported electrodes, but also meets the installation needs of different scenarios.

Consultation now provides exclusive selection solutions, installation guidance, and maintenance skills, allowing complex media pH measurement to bid farewell to adaptation and blockage troubles, and helping production processes operate efficiently and quality control be accurately implemented!

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