{"product_id":"auto-aqua-digital-inline-tds-titanium-s1","title":"Auto Aqua Digital inline TDS Titanium S1","description":"\u003cp\u003e\u003cstrong\u003eTells you the day your DI resin gives up, not the week after.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe AutoAqua Digital Inline TDS Titanium S1 is a permanently plumbed meter for total dissolved solids (TDS, the mineral load left in your water) on RO and RO\/DI systems. It reads 0 to 999 ppm at 1 ppm resolution with ±2% accuracy through a titanium probe, runs about a year on a single CR2032 cell, and magnet-mounts beside the filter housings. The S1 ships with one union tee, so it monitors one point in the line — decide which point matters most before you cut any tubing.\u003c\/p\u003e\n\n\u003ch3\u003eKey features\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eTitanium probe\u003c\/strong\u003e — AutoAqua specifies titanium for corrosion resistance in a fitting that stays wetted permanently.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e0 to 999 ppm at 1 ppm resolution\u003c\/strong\u003e — fine enough to see DI resin exhausting a single point at a time rather than in a jump.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003e±2% stated accuracy\u003c\/strong\u003e — close enough that a 3 ppm reading is a real 3 ppm, not rounding.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBacklit LCD\u003c\/strong\u003e — readable inside a dark cabinet without a torch.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAuto power off after 3 minutes\u003c\/strong\u003e — why one CR2032 lasts about a year on a meter that is always plumbed in.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUser calibratable\u003c\/strong\u003e — drift can be corrected against a reference rather than replacing the meter.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eIntegrated magnet\u003c\/strong\u003e — sticks to the filter bracket or housing clip, no drilling.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003ctable\u003e\u003ctbody\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasurement range\u003c\/th\u003e\n\u003ctd\u003e0 to 999 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eResolution\u003c\/th\u003e\n\u003ctd\u003e1 ppm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAccuracy\u003c\/th\u003e\n\u003ctd\u003e±2%\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMeasurement points\u003c\/th\u003e\n\u003ctd\u003eOne\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eProbe material\u003c\/th\u003e\n\u003ctd\u003eTitanium\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eBacklit LCD\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eAuto power off\u003c\/th\u003e\n\u003ctd\u003eAfter 3 minutes\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eCalibration\u003c\/th\u003e\n\u003ctd\u003eUser calibratable\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eIntegrated magnet\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eWater connection\u003c\/th\u003e\n\u003ctd\u003eQuarter-inch push-connect union tee (one supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003ePower\u003c\/th\u003e\n\u003ctd\u003eCR2032 lithium cell (one supplied)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eBattery life\u003c\/th\u003e\n\u003ctd\u003eAbout 1 year\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003cth\u003eManufacturer part number\u003c\/th\u003e\n\u003ctd\u003eTDS-100S\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\n\n\u003ch3\u003eWhich Titanium do I need?\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eModel\u003c\/th\u003e\n\u003cth\u003eUnion tees supplied\u003c\/th\u003e\n\u003cth\u003ePoints monitored at once\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eTitanium S1 (TDS-100S)\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003ctd\u003e1\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTitanium S2 (TDS-200S)\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003ctd\u003e2\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTitanium S3 (TDS-300S)\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003ctd\u003e3\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eAll three share the same 0 to 999 ppm range, 1 ppm resolution and ±2% accuracy. The only thing that changes is how many places in the line you can read at once. This listing is the S1.\u003c\/p\u003e\n\n\u003ch3\u003eWhere to put the single probe\u003c\/h3\u003e\n\u003cp\u003eBecause the S1 reads one point, where you tee it in decides what the meter can tell you.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter the DI resin\u003c\/strong\u003e — the number your tank actually receives, and the reading that should sit at 0 ppm. This is the usual choice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eAfter the RO membrane, before DI\u003c\/strong\u003e — shows membrane performance directly, but says nothing about what finally leaves the unit.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOn the feed line\u003c\/strong\u003e — your starting point. Useful to know once, rarely worth a permanent probe.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you want membrane performance and final product water at the same time, that is two measurement points, which is the S2 rather than the S1.\u003c\/p\u003e\n\n\u003ch3\u003eReading the number\u003c\/h3\u003e\n\u003ctable\u003e\n\u003cthead\u003e\u003ctr\u003e\n\u003cth\u003eWhere you read\u003c\/th\u003e\n\u003cth\u003eWhat the number tells you\u003c\/th\u003e\n\u003cth\u003eWhat a change means\u003c\/th\u003e\n\u003c\/tr\u003e\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003eFeed line\u003c\/td\u003e\n\u003ctd\u003eYour incoming supply TDS\u003c\/td\u003e\n\u003ctd\u003eChanges what the membrane has to remove, and shifts seasonally on some supplies\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAfter the RO membrane\u003c\/td\u003e\n\u003ctd\u003eHow much the membrane is removing\u003c\/td\u003e\n\u003ctd\u003eExpress it as rejection: (feed minus product) divided by feed, times 100. A falling percentage means the membrane is wearing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAfter the DI resin\u003c\/td\u003e\n\u003ctd\u003eThe water your tank receives\u003c\/td\u003e\n\u003ctd\u003eThe DI stage exists to bring this to 0 ppm. Any reading above 0 ppm means the resin is running out\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003cp\u003eThe meter reports the water; it does not schedule your maintenance. What it gives you is the date the number moved.\u003c\/p\u003e\n\n\u003ch3\u003eSuitable for, and not suitable for\u003c\/h3\u003e\n\u003cp\u003eSuitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eRO and RO\/DI systems plumbed in quarter-inch push-connect tubing\u003c\/li\u003e\n\u003cli\u003eFreshwater and marine keepers making their own top-off and mixing water\u003c\/li\u003e\n\u003cli\u003eWatching one point continuously instead of dipping a handheld meter\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNot suitable for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eReading aquarium water — a stocked tank, and marine water in particular, sits well above the 999 ppm ceiling\u003c\/li\u003e\n\u003cli\u003eSaltwater lines, for the same reason\u003c\/li\u003e\n\u003cli\u003eAnyone who needs feed and product readings at the same moment — that is the S2\u003c\/li\u003e\n\u003cli\u003eTubing other than quarter-inch push-connect, without an adaptor\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat's included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eTitanium S1 digital inline TDS meter\u003c\/li\u003e\n\u003cli\u003eCR2032 lithium battery x 1\u003c\/li\u003e\n\u003cli\u003eQuarter-inch push-connect union tee x 1\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eNot included\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRO or RO\/DI filter unit\u003c\/li\u003e\n\u003cli\u003eQuarter-inch RO tubing\u003c\/li\u003e\n\u003cli\u003eAdditional union tees for a second measurement point\u003c\/li\u003e\n\u003cli\u003eCalibration reference solution\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eCare and maintenance\u003c\/h3\u003e\n\u003cp\u003eExpect about a year from the CR2032, helped by the three-minute auto power off. Keep the display body out of direct splash even though the probe itself is titanium. If the reading drifts against a known reference, recalibrate rather than replace.\u003c\/p\u003e\n\n\u003ch3\u003eGoes well with\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/reef-pure-mixed-bed-colour-indicating-di-resin\"\u003eReef Pure Mixed Bed Colour Indicating DI Resin\u003c\/a\u003e — the stage the 0 ppm reading is watching\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/reef-pure-reverse-osmosis-membrane\"\u003eReef Pure Reverse Osmosis Membrane\u003c\/a\u003e — what a falling rejection percentage points to\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/reef-pure-4-stage-eddentials\"\u003eReef Pure 4 Stage Essentials+\u003c\/a\u003e — an RO\/DI unit to tee the meter into\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/autoaqua-smart-asov-elctronice-auto-shut-off-valve-for-ro-di\"\u003eAutoAqua Smart ASOV\u003c\/a\u003e — fills the reservoir automatically once you trust the water\u003c\/li\u003e\n\u003cli\u003e\n\u003ca href=\"\/products\/auto-aqua-dc-solenoid-valve\"\u003eAutoAqua DC Solenoid Valve\u003c\/a\u003e — feeds that water straight to a top-off system\u003c\/li\u003e\n\u003cli\u003e\u003ca href=\"\/collections\/autoaqua\"\u003eThe full AutoAqua range\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWarranty and delivery\u003c\/h3\u003e\n\u003cp\u003eShips as a standard parcel. Any manufacturer's warranty offered on this meter applies in addition to the consumer guarantees you have under Australian Consumer Law, which cannot be excluded.\u003c\/p\u003e\n\n\u003ch3\u003eCommon questions\u003c\/h3\u003e\n\u003ch4\u003eDoes the Titanium S1 read two points at once?\u003c\/h4\u003e\n\u003cp\u003eNo. The AutoAqua Titanium S1 ships with one union tee and monitors a single point in the line. Reading two points at once, such as before and after the DI stage, requires the Titanium S2, which supplies two tees.\u003c\/p\u003e\n\u003ch4\u003eCan it stay plumbed in permanently?\u003c\/h4\u003e\n\u003cp\u003eYes. The probe is titanium for exactly that reason, and the meter powers down after three minutes so a single CR2032 lasts about a year in continuous installation.\u003c\/p\u003e\n\u003ch4\u003eWill it read my aquarium water?\u003c\/h4\u003e\n\u003cp\u003eNo. The meter tops out at 999 ppm, which is a purified-water range. Stocked aquarium water, and marine water especially, reads far above that ceiling.\u003c\/p\u003e\n\u003ch4\u003eWhat battery does it take?\u003c\/h4\u003e\n\u003cp\u003eA single CR2032 lithium cell, one of which is supplied. AutoAqua rates battery life at about one year.\u003c\/p\u003e\n\u003ch4\u003eCan the meter be calibrated?\u003c\/h4\u003e\n\u003cp\u003eYes. The Titanium S1 is user calibratable, so a drifting reading can be corrected against a reference solution instead of replacing the unit.\u003c\/p\u003e","brand":"AutoAqua","offers":[{"title":"Default Title","offer_id":55242230595875,"sku":"BA8861","price":89.95,"currency_code":"AUD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0972\/7236\/5347\/files\/TDS-100S_750x700_7094987e-9bc3-48e6-9cb3-d09deae1c008.png?v=1786080545","url":"https:\/\/nicksaquariumoceanariumterrarium.com.au\/products\/auto-aqua-digital-inline-tds-titanium-s1","provider":"Nicks Aquarium Oceanarium Terrarium","version":"1.0","type":"link"}