pH Expert de Zodiac W500708 nuevo modelo negro y azul - Q-Tech ® 2026

Zodiac W500708 pH Expert

Regular price €641,92 Sale price€464,92
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  • 3 in stock
  • Backordered, shipping soon

At Q-TECH, we apply the same clear rules for everyone: the law protects you, and when applied correctly, it protects us as well. By processing your purchase, you accept our General Terms and Conditions of Sale. If you are purchasing as a consumer (B2C), nothing stated herein limits the rights granted to you by mandatory law (RDL 1/2007, TRLGDCU): the 3-year legal warranty of conformity and the right of withdrawal under the terms and with the exceptions legally provided, which are detailed below. References to "B2B" apply only to businesses and professionals.

Your guarantees

  • Rights intact: 14 days of withdrawal from receipt for most products—subject to the legal exceptions you will see below, such as goods made to your specifications—and a 3-year legal warranty of conformity, under the terms of the TRLGDCU.
  • Conformity with the description: we guarantee that the equipment will correspond to the published technical description and what one could reasonably expect from it (arts. 115 et seq. TRLGDCU). Images and videos are for guidance only: the manufacturer may supply a more recent revision of the product or introduce minor aesthetic, packaging, or firmware changes, without this constituting a lack of conformity as long as the described characteristics and performance are maintained.
  • Traceability that also protects you: we document the condition, serial number, and seal of each piece of equipment upon shipment, and we video-record the opening of returns; this is your proof of the condition in which the goods were delivered.

Responsible use and your part

  • If you are thinking of returning it, keep it as you received it: without installing or activating it, with its seals, accessories, and packaging intact. This is how to ensure a full refund, without deductions.
  • Handling that exceeds inspection reduces value: handling the equipment beyond what is necessary to verify its nature and operation may result in a real, assessed, and case-by-case justified deduction (art. 108.2 TRLGDCU), never a fixed percentage. In particular: activating or registering the serial number, linking it to a manufacturer's account or app, circulating water through hydraulic equipment, unsealing probes, or installing software or consumables. Initial inspection of the product does not lead to a deduction.
  • The same item must be returned: withdrawal requires returning the supplied unit. Different equipment, or equipment with prior use, age, or wear prior to purchase, does not constitute a valid withdrawal.
  • Installation and cybersecurity, shared responsibility: this is technical hardware; you are responsible for correct installation, credentials, patches, and backups, while we deliver a compliant product. Q-TECH is not liable for damages resulting from poor installation, incorrect configuration, or omission of patches by the customer or third parties (in B2C, without prejudice to the legal warranty and liability for intent or negligence, arts. 86 and 130 TRLGDCU).
  • Delivery of bulky goods: delivery is made to the curb. B2C: transport risk is ours until physical delivery (art. 66 ter); we recommend noting visible damages on the delivery note and notifying us of breakages within 24-48 hours with photographs to activate the insurance. B2B: inspection and notation on the delivery note are mandatory; hidden damages must be reported within 24 hours (art. 366 CCom). Unjustified rejection or incorrect shipping information will entail the actual outbound and return costs (approx. €85-550 for heavy machinery).

Made to your measure (Advanced Pre-Assembly)

  • If your order includes equipment, racks, hydraulic assemblies, or technical rooms made or configured according to your specifications (permanent joints, custom cuts or wiring, parameterization, pressure testing), these are custom goods without the right of withdrawal from the conclusion of the contract (art. 103.c TRLGDCU; CJEU Case C-529/19), which is informed before purchasing and documented in the signed Order Note. A test you request without permanent modification retains your right of withdrawal, with only the actual loss of value caused by that test being deducted. Would you prefer to receive it tested, configured, and ready to connect, without assuming these risks? Contract our Advanced Pre-Assembly or the prior technical audit.

If you are purchasing as a business or professional (B2B)

  • The transaction is governed by the Commercial Code: firm sale, without the right of withdrawal; notification of defects within 4 days (apparent) / 30 days (hidden), arts. 336 and 342. Q-TECH acts as a distributor and excludes indirect damages, loss of profit, and data loss, limited to the price of the equipment, without prejudice to the manufacturer's commercial warranty.

Product warnings v1.0 · June 2026. Information summary; the complete and binding conditions are those published at q-tech.es.

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Zodiac pH Expert: Precision Engineering in Chemical Balance

The Zodiac pH Expert is an automatic pH control system designed to maximize the efficiency of water treatment. This equipment uses proportional dosing technology to maintain an exact setpoint, ensuring bathing comfort and equipment protection. The cost of inaction in pH control leads to eye irritation, disinfectant inefficiency, and accelerated corrosion in the plant room. The Zodiac pH Expert solves these operational failures through constant monitoring and high-fidelity automated correction.

Automatic Regulation and Digital Monitoring

The Zodiac pH Expert stands out for its ability to respond immediately to variations in water chemistry. The system implements proportional dosing logic that reduces the injection rate as it approaches the target value, optimizing chemical consumption.

  • Adaptive Proportional Dosing: The microprocessor adjusts the injection time according to the pH deviation, ensuring uninterrupted chemical stability.

  • High-Visibility LCD Interface: Backlit screen that allows for the quick reading of technical parameters and the system status in low-light environments.

  • Active Safety (OFA): Exclusive safety system that stops dosing if the setpoint is not reached within a specified time, preventing accidental massive injections.

  • Versatile Configuration: Allows the selection of acid or basic correction mode to adapt to the specific needs of the installation.

Electronic Robustness and Operational Safety

The architecture of the Zodiac pH Expert is designed for prolonged performance in professional plant rooms. Its design facilitates integration into existing filtration systems and ensures a long hardware lifespan through advanced electronic protections.

  • Industrial-Grade Housing: Manufactured with technical polymers that offer protection against water splashes and aggressive chemical environments.

  • Automatic Pump Priming: Facilitates initial startup and maintenance operations after replacing the chemical product container.

  • Alkalinity Compensation (TAC): Smart algorithm that adjusts dosing based on water hardness to prevent sudden pH fluctuations.

  • Simplified Peristaltic Maintenance: The pump head allows for quick replacement of the santoprene tube without the need to remove the equipment from the wall.

Technical Specifications:

  • pH Measurement Range: From 0.0 to 14.0.

  • Dosing Flow Rate: 1.5 l/h.

  • Maximum Operating Pressure: 1.5 bar.

  • Protection Rating: IP65.

  • Power Supply: 230V AC / 50-60 Hz.

  • Probe Calibration: Single-point or two-point (pH 4.0 and pH 7.0).

  • Pump Type: High-resistance peristaltic.

  • Tube Material: Santoprene with high chemical compatibility.

Compatibility and Application Limits

The Zodiac pH Expert is compatible with all disinfection systems, including salt chlorination and bromine dosing. It must be installed in the return bypass, always after the filter and before any heating system.

TECHNICAL RESTRICTION: Do not use for the injection of viscous chemicals or those containing solid particles. The equipment requires vertical installation and periodic probe calibration to maintain industrial-grade precision.

Frequently Asked Questions

  • Why is the Zodiac pH Expert better than a standard dosing pump? The Zodiac pH Expert uses proportional dosing. Unlike pumps that only turn on and off, this equipment injects smaller amounts as the pH approaches the ideal level, saving product and preventing the water from becoming too acidic.

  • What happens if the acid container runs empty? The equipment detects that the pH does not drop despite continuous injection. Thanks to the OFA safety system, the Zodiac pH Expert automatically stops the pump and displays an alert to indicate that no chemical product is available.

  • How often should I calibrate the pH probe? It is recommended to perform one calibration at the start of the swimming season and another halfway through. The process is simple using the digital menu and the included standard solutions, ensuring that the reading is always accurate.

Q-Tech Engineering Support

At Q-tech.es, we provide specialized technical assistance for the configuration and commissioning of Zodiac control equipment. If you require support for hydraulic sizing or on-site technical assistance, contact our field engineers.

Documentation d pH Expert by Zodiac:

Download the User Manual

Are you looking for any spare parts for the  Zodiac pH Expert?

Zodiac pH Expert W500708 Doser for Private Pools

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Availability and lead times: this item is in stock in our warehouse. Occasionally, depending on the time of year, an error may occur in the stock update. If no units are available at the time of your order, we will order it urgently and inform you immediately of the updated delivery time.

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