HM Digital DM-1 In-Line Dual TDS Monitor, 0-9990 ppm Range, 2% Readout Accuracy

Q: what kind of batteries does this use?

303/357 Battery - SR44 - Silver oxide 190 mAhModel 357A

Q: What are the recommended and maximum flow rates? PSI?

FROM HM DIGITAL: There are no recommended flow rates, but there is a maximum pressure rating, which is 232 PSI (16 bar) at room temperature (25C/77F).

Q: Can this be dropped into a DWC 5 gallon bucket and left in there so to measure the ppm's anytime i turn it on (since wire is sitting in the water) ?

It should not be fully submerged, only the probe up to the threads should go into liquid. You could probably seal wire end with a conformant coating or silicone though, do NOT get any on probe end. Yes it can be used in a deep water or reservoir, it does need to have some type of consistent flow in the probe area... to give a consistent reading ! ...get it naysayers, please think before you post inaccurate advice. A basic bubbler agitating solution will work. Be sure to locate probe out of direct bubble area , the bubbles will skew results. I've also used these in unagitated tanks , they work...but will only read the general area , obviously. This will give a general, consistent, read for on the fly observations of nutrient solution, but you still need to compare with a true reading for accuracy. TLDR Dont fully trust this as your standard when used for hydro, DO use as a consistent observation guide,check occasionally against a REAL meter/test, and keep it out of bubbles or it'll get wonky readings.

Product ID: 254566832

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Details

Brand
HM Digital
Material
Other
Product dimensions
48L x 20W
Range
0-9990 ppm
Measurement accuracy
2%

📏0-9990 ppm range

🔋1000-hour battery life

⚙️2% readout accuracy

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Description

💧 Stay Ahead of the Curve with Pure Water Insights!

QUICK INSTALLATION - Effortless click installation for immediate use.
COMPACT LIGHTWEIGHT - Weighs only 45.4g for easy portability.
USER FRIENDLY DISPLAY - Clear LCD screen for easy reading of TDS levels.
MEASURE WITH PRECISION - Dual TDS monitoring for feed and product water.
SMART POWER MANAGEMENT - Auto-Off feature saves battery life after 10 minutes.

The HM Digital DM-1 In-Line Dual TDS Monitor is a cutting-edge device designed to measure the total dissolved solids (TDS) in both feed and product water, ensuring you always know the quality of your water filtration system. With a range of 0-9990 ppm and a 2% readout accuracy, this monitor is perfect for both home and professional use. Its advanced microprocessor technology guarantees reliable performance, while the auto-off feature conserves battery life, making it a smart choice for eco-conscious users.

Specifications

Manufacturer	HM Digital, Inc.
Part number	DM-1
Item Weight	45.4 g
Product Dimensions	4.83 x 2.03 x 7.62 cm; 45.36 g
Batteries	2 LR44 batteries required. (included)
Item model number	716186
Size	0-9990 ppm; 1 ppm resolution (0-999), 10 ppm resolution (1000-9990)
Color	Blue & White
Style	In-Line
Finish	Brass
Material	Other
Power source type	Battery Powered
Installation Method	Click
Item Package Quantity	1
Number Of Pieces	1
Measurement Accuracy	2%
Display Style	LCD
Included components	Bag
Batteries Included?	Yes
Batteries Required?	Yes
Battery Cell Type	Alkaline
Battery life	1000 Hours

Have a Question? See What Others Asked

what kind of batteries does this use?

What are the recommended and maximum flow rates? PSI?

What fittings are used that come in contact with water? are they nsf certified....usually printed on part if it is.

Can this be dropped into a DWC 5 gallon bucket and left in there so to measure the ppm's anytime i turn it on (since wire is sitting in the water) ?

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