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HM Digital Pocket-Sized TDS Meter w/ Thermometer

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$22.49  


HB00045

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HM Digital, Inc.

Pocket Sized TDS Meter w/ digital thermometer in aquarium-specific packaging.

The world’s smallest and lightest TDS meter also comes with a built-in digital thermometer. It is a true pocket size meter, comfortably fitting into a shirt pocket without adding bulk. The TDS-4TM-A comes in an aquarium-specific retail-ready packaging.

Features

  • Includes an internal digital thermometer (celsius).
  • The smallest and lightest TDS meter available on the market.
  • Hold Function - Saves measurements for convenient reading and recording.
  • Auto-off function - Turns off meter after 10 minutes of non-use to conserve batteries.
  • Dual Range - Measures from 0 - 999 ppm, with a resolution of 1ppm. From 1000 to 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.
  • Recommended for aquariums & aquaculture


Product Manuals & Documentation

HM Digital Pocket-Sized TDS Meter w/ Thermometer

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

HM Digital Pocket-Sized 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.

15 Reviews

BRIAN FRITZEL from Chula Vista, CA UNITED STATES

06/27/2015

Experience Level: Intermediate

Does the job

Not much to review four stars out of five just because it Celsius not Fahrenheit be nice if you could switch back-and-forth will besides that works as well is it supposed to come calibrated one day delivery as usual as well good product.

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JOANNA from NOLANVILLE, TX UNITED STATES

03/04/2015

Experience Level: Intermediate

Accurate

I tested this device against 2 other borrowed devices and it is precise. I wish the display screen was a bit bigger, but this is not a show stopper.

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CHARLES BLAKE from LIBERTY, MO UNITED STATES

12/01/2014

Experience Level: Expert

TDS Meter

I wish that it read Fahrenheit , I do not like having to do the math .

2 out of 2 found this review helpful

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Eric Roberts from Florida

11/08/2013

Experience Level: Intermediate

Quality and Precision

Just started testing my RO/DI water and will tell me exact ppm. Very well built piece and will last! If you want to make sure your RO/DI system is doing its job, get this TDS Meter!

1 out of 1 found this review helpful

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FRANK from Miami, FL UNITED STATES

05/11/2013

Experience Level: Intermediate

Temp is Celsius ONLY

The unit only reads temp. in Celsius not Fahrenheit. Not a big deal for me but can be for others. Apart from that, scary when you test your "filtered" drinking water vs. RO/DI Water.

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JPowell from TN UNITED STATES

04/08/2012

Experience Level: Expert

Pre-Calibrated, Great Meter

Giving this one 4.5 stars only because the cap is a bit loose. It has a clip on it if you wanted to carry it around, but it would fall off very easily. The meter comes pre-calibrated and works right out of the package. Reads TDS almost instantly and seems to be very accurate. Can't beat it for the price.

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BENJAMIN from

12/02/2011

Experience Level: Beginner

Works great

Does as described. I wanted to make sure my RO/DI was working efficiently and after using product, I have no worries as my reading came back 0. Very easy to use and fast readings.

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Burto from TULSA, OK UNITED STATES

08/31/2011

Experience Level: Intermediate

Must Have!

Very handy meter. Alerted me the first day to a potential problem with my top off water. I checked the source (city tap) water against my RO and then my RO/DI. My RO/DI was zero but the water in the bottom of my top off reservoir was way high. Now I've covered my reservoir and the levels back down to near zero. Disaster averted. Would have given 5 stars except for the temp feature is in celcius.

1 out of 1 found this review helpful

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JIM BENGE from LIVERMORE, CA UNITED STATES

08/30/2011

Experience Level: Intermediate

Readings in Celsius only

Note that this product will *not* display temp in Fairenheit Also, I could not get a TDS reading on the saltwater in my tank, it would just display dashes; however, it would give me readings on freshwater. Great price, but being in the U.S., I'm used to temps in Fairenheit.

1 out of 10 found this review helpful

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Troy from PETALUMA, CA UNITED STATES

04/01/2011

Experience Level: Intermediate

HM digital TDS meter

Works great, simple and easy. Popped it in some "RO" water I had purchased the day before and it spat out 175ppm, not buying there again (my tap water is 256ppm btw). As a control, I tested it on distilled and it read 000ppm. The temp feature seems accurate as well, in reality I don't have much use for the feature. I have only tested it once and it was spot on.

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