RODI SYSTEMS
DI RESIN - NSF
RO SYSTEMS
FILTERS
MEMBRANES
WATER TESTING
RO PUMPS
NSF PARTS
Easy to Install
"It was very easy to install and it is nice to be able to see my TDS results quickly and easily."
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HM Digital DM-1 Dual In-Line TDS Meter
Dual TDS Meter In-Line made by HM Digital.
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Standard Features
DM-1 HM Digital Dual In-LineTDS Monitor  Measure the tap water coming in vs. the purified water going out of your water filtration system at any time.  FEATURES:
 * Highly efficient and accurate due to its advanced microprocessor technology.  * Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use  * Dual Range 0-9990 ppm (From 0-999 ppm the seolsution is 1 ppm. From 1000-9990 ppm, the resolution is 10 ppm, indicated by a blinking "x10" image.) * Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver. *Comes equipped with a Mur-lock Quick-Connect T-fittings. * Installs quickly and easily. * 1 YEAR WARRANTY PER HM DIGITAL SPECIFICATIONS: Range: 0-9990 ppm Accuracy: + 2% Conversion Factor: NaCl (avg. 0.5) Cable Length: 24.5" (including sensor) Power source: 2 x 1.5 V button cell batteries (LR44 or equivalent; included) Battery Life: approx. 1000 hours of continuous use Size: 7.6 x 2 4.7 cm ( 3 x .8 x 1.9 in) Weidht 79.4 g (2.8 oz.) UPC: 891144000052 |
| Dimensions and WeightSize: 7.6 X 2 4.7 cm ( 3" x .8" x 1.9") Weight: 79.4 g (2.8 oz.) |
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Illustrations/Diagrams/Instructions : DM-1 INSTRUCTIONS |
| Additional InformationNo |
Overall rating: 5.0 / 5 from 3 reviews.
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Reviews
Simple, effective
"Works great out of the box. Easy install. Ensure you install the probs in the correct orientation to ensure water flows past the two pins in the correct way. I spun the probs 90 degrees from recommend and found that my readings we're roughly 40 points less. Proper placement is critical. Read instructions."
Convenient and easy set up
"I had an RODI system already set up, but didn't really know how efficient it was or how often to change the filters. I don't do a lot of big water changes in my reef tanks so it was hard to gauge when they were at there limit. Now that I have the TDS meter along with the pressure gauge I know that the system has enough pressure to run efficiently and am confident that the water coming out is zero TDS. If the meter reads above zero i will know it is time to change out the filters. The push in and out fittings are secure, super easy to install, and also came with self sticking velcro for easy placement where ever you need to put the didgital dosplay. Also comes at a fair price. So glad i bought it, well worth it."