{"product_id":"sonde-de-niveau-inox-pour-rns-2","title":"CCEI Stainless Steel Water Level Sensor for RNS-2 Pool Controller – 10 m Cable","description":"\u003ch2\u003eStainless steel level sensor for CCEI RNS-2 control box: precise water level detection\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003estainless steel level sensor for RNS-2\u003c\/strong\u003e is an electronic sensor that detects the presence or absence of water at a specific point in the pool skimmer or balance tank. It connects to the \u003cstrong\u003eCCEI RNS-2 level control box\u003c\/strong\u003e, which automatically controls a filling solenoid valve to maintain a constant water level in the pool. The sensor comes with a \u003cstrong\u003e10-meter cable\u003c\/strong\u003e, allowing it to be installed in the skimmer or balance tank while connecting the RNS-2 box in the technical room. It is made of \u003cstrong\u003estainless steel\u003c\/strong\u003e, resistant to corrosion, chlorine, bromine, and salt, for maximum lifespan in a pool environment.\u003c\/p\u003e\n\n\u003cp\u003eThe sensor body measures \u003cstrong\u003e2.9 × 1 × 4 cm\u003c\/strong\u003e, and it attaches to a \u003cstrong\u003emounting rail\u003c\/strong\u003e with dimensions 3.5 × 1.4 × 5 cm, which can be screwed or glued into the skimmer. This rail mounting allows for \u003cstrong\u003eprecise adjustment of the detection height\u003c\/strong\u003e: you position the sensor at the desired water level, and the RNS-2 regulator automatically maintains this level by opening the solenoid valve as soon as the water drops below the sensor.\u003c\/p\u003e\n\n\u003ch2\u003eLevel sensor operation: capacitive detection or contact with water\u003c\/h2\u003e\n\n\u003cp\u003eThe CCEI level sensor operates on a principle of \u003cstrong\u003econtact detection with water\u003c\/strong\u003e or \u003cstrong\u003evariation in electrical capacitance\u003c\/strong\u003e. When the sensor is immersed in water, it closes an electrical circuit or changes its capacitance, which sends a signal to the RNS-2 box to indicate that the level is correct. When the water level drops and the sensor is exposed to air, the circuit opens or the capacitance changes, and the RNS-2 regulator commands the opening of the filling solenoid valve to restore the level.\u003c\/p\u003e\n\n\u003cp\u003eThis system is extremely reliable because it contains \u003cstrong\u003eno moving mechanical parts\u003c\/strong\u003e (no float, no spring, no diaphragm). Detection is purely electronic, which eliminates the risk of blockages by limescale, leaves, or debris. The sensor can remain permanently immersed without wear, and its stainless steel casing guarantees total resistance to corrosion, even in highly chlorinated or saltwater.\u003c\/p\u003e\n\n\u003ch2\u003eWhy use an RNS-2 automatic level regulator with a sensor?\u003c\/h2\u003e\n\n\u003cp\u003eThe water level of a pool naturally fluctuates throughout the season. \u003cstrong\u003eEvaporation\u003c\/strong\u003e causes the water level to drop several centimeters per week in summer (up to 1 cm per day during hot weather). \u003cstrong\u003eSplashes\u003c\/strong\u003e and \u003cstrong\u003eswimmers exiting the pool\u003c\/strong\u003e also remove water from the basin. Conversely, \u003cstrong\u003erain\u003c\/strong\u003e raises the level, and \u003cstrong\u003ebackwashes\u003c\/strong\u003e (filter backwashing) remove water from the circuit.\u003c\/p\u003e\n\n\u003cp\u003eA too low water level causes \u003cstrong\u003eair intake at the skimmer\u003c\/strong\u003e, which causes the filtration pump to cavitate and can damage it. A too high level reduces the efficiency of surface skimming, as water no longer enters the skimmer correctly. The RNS-2 regulator with a sensor solves this problem by \u003cstrong\u003eautomatically maintaining the optimal level\u003c\/strong\u003e: as soon as the water drops below the sensor, the solenoid valve opens and fills the pool until the water reaches the sensor again. The system then stops automatically, preventing any overflow.\u003c\/p\u003e\n\n\u003ch2\u003eSensor installation: skimmer or balance tank?\u003c\/h2\u003e\n\n\u003cp\u003eThe level sensor can be installed in \u003cstrong\u003etwo main locations\u003c\/strong\u003e depending on the pool configuration:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation in the skimmer (classic pools)\u003c\/strong\u003e: This is the most common configuration for pools with skimmers. The mounting rail is fixed inside the skimmer, at the desired height for the water level (generally halfway up the skimmer opening, about 10 to 15 cm below the edge of the pool). The 10-meter cable passes through the skimmer's technical duct or a dedicated passage to the technical room where the RNS-2 box is located.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eInstallation in the balance tank (infinity pools)\u003c\/strong\u003e: For infinity pools, the sensor is placed in the balance tank, which collects overflowing water before it is returned to the pool. The RNS-2 regulator then maintains a constant balance tank level, ensuring optimal operation of the overflow cascade. The 10-meter cable connects the sensor in the tank to the RNS-2 box located in the technical room.\u003c\/p\u003e\n\n\u003cp\u003eDuring installation, it is important to position the sensor away from \u003cstrong\u003eeddies and turbulence\u003c\/strong\u003e, in an area where the water is relatively calm. Avoid placing it directly in front of the return water inlet or in the skimmer outlet flow, as waves could trigger untimely opening\/closing of the solenoid valve.\u003c\/p\u003e\n\n\u003ch2\u003e10-meter cable: sufficient distance between sensor and RNS-2 box\u003c\/h2\u003e\n\n\u003cp\u003eThe \u003cstrong\u003e10-meter\u003c\/strong\u003e electrical cable supplied with the sensor covers the typical distance between the skimmer (or balance tank) and the technical room in most residential installations. For large pools or installations where the technical room is very far away, the cable can be extended with a \u003cstrong\u003ewaterproof electrical cable of the same cross-section\u003c\/strong\u003e (generally 2 × 0.75 mm²). Extensions must be made with IP68 waterproof connectors or waterproof junction boxes, and the cable must be mechanically protected in a buried TPC or PVC conduit.\u003c\/p\u003e\n\n\u003cp\u003eThe cable is \u003cstrong\u003epre-installed and soldered\u003c\/strong\u003e to the sensor, ensuring perfect sealing at the connection point. Therefore, it is not necessary to make a waterproof connection on the sensor side; only the connection to the RNS-2 box needs to be made (connection via screw terminal block in the box).\u003c\/p\u003e\n\n\u003ch2\u003eStainless steel material: maximum resistance to chlorine, bromine, and salt\u003c\/h2\u003e\n\n\u003cp\u003eThe sensor is made of \u003cstrong\u003estainless steel\u003c\/strong\u003e (likely 316L or 304 stainless steel), the reference material for equipment in permanent contact with pool water. Stainless steel perfectly resists \u003cstrong\u003echlorine\u003c\/strong\u003e, \u003cstrong\u003ebromine\u003c\/strong\u003e, \u003cstrong\u003esalt\u003c\/strong\u003e (salt electrolysis), \u003cstrong\u003eUV\u003c\/strong\u003e, and \u003cstrong\u003etemperature variations\u003c\/strong\u003e (from 0 to 40 °C in an outdoor pool). It does not corrode, rust, and retains its mechanical and electrical properties for decades.\u003c\/p\u003e\n\n\u003cp\u003eThe choice of stainless steel is particularly important for saltwater pools with electrolyzers, where plastic or ordinary ferrous metal sensors would corrode quickly. 316L stainless steel, if used, contains molybdenum, which further enhances corrosion resistance in saline environments. CCEI stainless steel sensors are designed to last as long as the pool itself, without requiring preventive replacement.\u003c\/p\u003e\n\n\u003ch2\u003eExclusive compatibility with the CCEI RNS-2 box\u003c\/h2\u003e\n\n\u003cp\u003eThis sensor is specifically designed for the \u003cstrong\u003eCCEI RNS-2 level control box\u003c\/strong\u003e. It cannot be used with other brands or models of level regulators, as the detection protocol and electrical characteristics (voltage, resistance, capacitance) are specific to the RNS-2. Likewise, sensors from other manufacturers are generally not compatible with the RNS-2, unless they meet the exact same electrical specifications.\u003c\/p\u003e\n\n\u003cp\u003eThe RNS-2 box is an autonomous electronic regulator that controls a 230V solenoid valve for automatic pool filling. It has settings for the maximum filling time (overflow safety in case of sensor failure), and it can be connected to a centralized pool management system. The RNS-2 box and the sensor form a complete system for automating the water level.\u003c\/p\u003e\n\n\u003ch2\u003eWhen to replace the level sensor? Signs of failure\u003c\/h2\u003e\n\n\u003cp\u003eCCEI stainless steel level sensors are extremely reliable and have a lifespan of \u003cstrong\u003e10 to 15 years or more\u003c\/strong\u003e in normal use. However, several signs may indicate that a sensor is failing and needs to be replaced:\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eContinuous filling or no filling\u003c\/strong\u003e: If the solenoid valve remains continuously open (overflow) or never opens (too low level), first check the cable and connections to the RNS-2 box. If the wiring is correct, the sensor is probably short-circuited (continuous filling) or open-circuited (no filling).\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eErratic or intermittent detections\u003c\/strong\u003e: If the regulator repeatedly and quickly opens and closes the solenoid valve, this may indicate a dirty sensor (limescale or biofilm deposit) or oxidation of internal electrical contacts. Clean the sensor with white vinegar or diluted hydrochloric acid. If the problem persists, replace the sensor.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eNo reaction to level change\u003c\/strong\u003e: If you manually empty the pool and the regulator does not command filling even though the water is well below the sensor, check the electrical continuity of the cable with a multimeter. A cut cable or an oxidized connector prevents the signal from reaching the box.\u003c\/p\u003e\n\n\u003cp\u003eBefore replacing the sensor, always test the complete system: check that the RNS-2 box is powered, that the solenoid valve is working (test it in manual mode if the box allows it), and that the electrical connections are clean and tight. In many cases, a simple cleaning of the sensor or tightening of connections is enough to restore operation.\u003c\/p\u003e\n\n\u003ch2\u003eMinimal maintenance: annual sensor cleaning\u003c\/h2\u003e\n\n\u003cp\u003eThe level sensor requires virtually no maintenance. \u003cstrong\u003eAnnual cleaning\u003c\/strong\u003e is recommended, preferably at the beginning of the season, to remove limescale, algae, or biofilm deposits that could disrupt detection. Remove the sensor from its mounting rail, rub it with a soft sponge and white vinegar (to dissolve limescale), rinse with clean water, then reposition it in the skimmer or balance tank. Take advantage of this cleaning to check the condition of the cable and connections to the RNS-2 box.\u003c\/p\u003e\n\n\u003cp\u003eIf your water is very hard (TH \u003e 25 °F), semi-annual descaling may be necessary. In saltwater pools with an electrolyzer, also check that limescale deposits do not form on the sensor due to too intense chlorine production or too high pH (which promotes the precipitation of calcium carbonate).\u003c\/p\u003e","brand":"CCEI","offers":[{"title":"Default Title","offer_id":52139680596305,"sku":"SF140005","price":45.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0965\/5880\/9425\/files\/7e74f7ed7e6169631f0e805d3910c943.png?v=1779482116","url":"https:\/\/www.poolplanet.com\/en\/products\/sonde-de-niveau-inox-pour-rns-2","provider":"Pool Planet","version":"1.0","type":"link"}