HM Digital Handheld TDS Meter w/ Thermometer

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HM Digital, Inc.

Handheld TDS Meter 0-9990 with ATC & Temp, in vinyl carrying case

The world’s most popular TDS meter, the TDS-3 is the most reliable and longest lasting meter of its kind. It has a wide range of 0-9990 ppm has a hold button to save readings until it automatically shuts off after 10 minutes of non-use. The built-in thermometer displays the temperature and also compensates TDS for differences in temperature. The unit comes in a protective vinyl case. It takes only two batteries, which have extra long life and are very easy to change. TDS is shown in a large, easy-to-read display. It is simple to use and comes factory calibrated.

  • Ideal for commercial use. Includes a carrying case with belt clip.
  • Highly efficient and accurate due to its advanced microprocessor technology.
  • Hold Function: saves measurements for convenient reading and recording.
  • Auto-off function: the meter shuts off automatically after 10 minutes of non-use to conserve batteries.
  • Measurement Range: 0-9990 ppm. From 0-999 ppm, the resolution is in increments of 1ppm. From 1000 to 9990 ppm, the resolution is in increments of 10ppm, indicated by a blinking 'x10' image.
  • Built-in digital thermometer enables ATC: Automatic Temperature Compensation of 1 to 50 degrees Celsius (33 to 122 degrees Fahrenheit)
  • Display: large and easy-to-read LCD screen.
  • Factory Calibrated: our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.


Product Manuals & Documentation

HM Digital Handheld TDS Meter w/ Thermometer

Owner's Manual available for download in Adobe PDF file format

HM Digital Handheld TDS Meter w/ Thermometer

Additional Info 1 available for download in Adobe PDF file format

Manufacturer Info

HM Digital, Inc.
Established in 1987, HM Digital, Inc. (formerly known as Heemang Electronics) is an original equipment manufacturer (OEM) that has been recognized worldwide for providing the best values in water testing instrumentation, especially the increasingly popular TDS meter.

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“Pleased”
5.0

works good - shows both C / F

  • 1
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“Works Well, Super Easy to Use”
5.0

Very simple operation. Matches the TDS reading on my RO unit, so it seems accurate at low levels. Good for general indication of water chemistry changes and when ferts may be neeeded (my tanks are all planted freshwater). Fahrenheit temp indication would be nice, but Celsius only is no big deal. ...Read More

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“TDS/Temp Meter”
4.0

This meter seems to work and I've tested several water samples. I tested my water going to my RODI system, the water produced by the RODI system that has it's own TDS meter and the results are good. The results of the water leaving the RODI are identical to this TDS/Temp meter. My only problem wi...Read More

  • 1
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“Worth it”
5.0

Indispensable tool. Tap water showed 200, distilled showed 1 and ro di water showed 0! For a reef aquarium knowing tds is huge for a successful tank.

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“TDS okay”
3.0

TDS meter is just fine, however the temp meter is very slow to read and only reads in Celcius. A little dissapointed about that.

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“Simple to use”
5.0

This TDS tester is simple to use and accurate. It helped me determine that the free RO water from my LRS was not much different then tap water. Without the tester I would have never discover this. Now I make my own RO water and have watched all my water problems that left me head scratching all but ...Read More

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“GREAT TOOL”
5.0

GREAT TOOL TO HAVE. NICE AND EASY TO USE.

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