HM Digital, Inc.

Dual Inline TDS Meter DM-1 - HM Digital

$29.99  

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The Dual TDS meter offers an easy and convenient way of monitoring the performance of your RO or RO/DI unit. It allows you to quickly check the quality of the inlet and outlet water and helps you to determine when the cartridges need to be replaced. It is a great addition to any RO or RO/DI unit.

Features:
  • Highly efficient and accurate due to its advanced microprocessor technology.
  • Displays TDS levels of the Feed Water and Product Water with in & out electrode probes.
  • Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.
  • Dual Range—Measures from 0 ~ 999ppm, with a resolution of 1ppm.
  • Factory Calibrated—Recalibration is not necessary.
  • Comes equipped with John Guest Quick-Connect T-fittings as shown.
  • Installs quickly and easily.

Specifications

Specifications:

  • Range: 0 ~ 999ppm
  • Accuracy: ±2%
  • Power source: 2 x 1.5V button cell batteries (included)
  • Battery life: over 1,000 hours
  • Size: 7.6 x 2 x 4.7 cm (3" x .8" x 1.9")


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.


Warranty

30 days from date of purchase.

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9 Questions
Displaying questions 1-9
 
Q
Is the screen illuminated, so it can be read in dark rooms?
Asked : Aug 29, 2018
By : Joe, IL
 
 
 
A
Hi Joe, Thanks for your question. The screen is not illuminated.
Answered : Aug 30, 2018
By : Kat
 
Q
I have the HM Digital Dual Inline TDS Meter. My house has a whole house carbon filter and soft water system. I have a ro/di system for the aquairiums. when i go to test I have a reading of 83 in and 79 out. That is very low in compared to others and I need to know if it is time to change my filters. Thanks Bob
Asked : Feb 19, 2018
By : Robert, Monessen Pa
 
 
 
 
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Overall, others give this:

  • 4.9

45 Reviewers (100%) would recommend this

Overall Rating:

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5  Star
 40
4  Star
 4
3  Star
 1
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5
5.0
Get Two!
reviewerbadge
PROS
quick reads, let’s me know when to run the water water through the DI resin.
CONS
Only two meters, but the cost to buy is reasonable if you need/want that data.
REVIEW
For a while I was looking for a quadruple meter: I wanted to monitor my incoming water, the level after my sediment and carbon blocks before going into my membranes, the TDS after membrane, and finally the level after my DI, so I could keep track of how well each stage was working, but mostly to sho...Read More
  • 1
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5
5.0
Works perfectly
reviewerbadge
PROS
Works perfectly
CONS
None
REVIEW
Works exactly like it should, I use 2 of these with my rodi to know tds pre/post ro and pre/post di
  • 1
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5
5.0
Great TDS Meter
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REVIEW
I've had a ro/di unit for several years but never had a TDS meter. I finally decided to get one and this one works great and now i don't need to guess when filters need changed.
  • 1
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5
5.0
Cool

reviewerbadge
PROS
Easy to setup
CONS
None so far
REVIEW
I have always been one to want to know exactly the water quality going into my tanks. This takes out all the guess work and gives you piece of mind. Also will let you know when it’s time to change the filters.
  • 1
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5
5.0
Tds Meter

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REVIEW
I installed this on my Aquafx barracuda and its working great, Now I know the tds results And when to change my membranes. Great product
  • 1
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5
5.0
Easy RO Check

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REVIEW
Easy to install, battery operated, and gives very easy to read results. Cost is very reasonable.I should have installed day one when I set up my RO system.
  • 1
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5
5.0
Dual TSS meter

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REVIEW
Installation was easy and yes it does work well nice to know what incoming water reading is and out going now know when to replace my filter ,if you don't have this on ro and do filters you need this unit.
  • 1
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Write Your Review Earn 15 Points when you write a review
Sort by:
 

Overall, others give this:

  • 4.9

45 Reviewers (100%) would recommend this

Overall Rating:

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5  Star
 40
4  Star
 4
3  Star
 1
2  Star
 0
1  Star
 0
 

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