Can I just dip the probe in water or does it have to be use with tubing?

You can use this in either way.

what's the accuracy of the measurement?

Hi Rick A. I expect to receive the item this upcoming Sunday, once I install it,I will give you feedback, I have purchased several items from HM, such as a inline tds and am finding good results as far as accuracy with in 10 tds from the hand held meter.

can this be used on a 1" copper water main and if so, if I was to insert a 1" copper T, how close does the sensor need to be to the water flow?

Hi, if you are talking about the HM gallons meter, it could be installed with a 1" tee if you can also add a 1/4 fitting either push in type, or a threaded reduced fitting to recieve a push in pvc 1/4 npt. You can also forget the tee and use a pierce fitting on the line that is commonly used to get water to a evaporated cooler. The line should go to the in only feeding the Ro system so your not measuring all of the water being used for everything else. I hope this helps and makes sense.

What is the size of the display?

It's small... approx. 10mm x 20mm, but it's very easy to read.

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HM Digital SM-1 1-Stage Inline TDS Monitor For Single Water Line

Product ID: 386825514

Details

Special features
Built In TDS
Material
Plastic
Included components
Battery
Package information
Cartridge
Installation type
Countertop

💧TDS Monitoring

📏Compact Size

🔋Battery Powered

EC$152

Duties & taxes included

In stock

Sold byAmazon Saint Vincent and the GrenadinesDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💧 Elevate Your Water Game with Precision Monitoring!

LIGHTWEIGHT PORTABLE - Weighs only 68g for easy handling.
EFFORTLESS INSTALLATION - Countertop setup for instant use.
SMART FILTER MANAGEMENT - Know exactly when to change your filters.
VERSATILE COMPATIBILITY - Perfect for any filtration system, including RO systems.
STAY AHEAD OF WATER QUALITY - Monitor your water's TDS levels in real-time!

The HM Digital SM-1 is a lightweight, battery-powered inline TDS monitor designed for single water lines. It provides real-time measurements of total dissolved solids, ensuring optimal water quality for various filtration systems, including reverse osmosis. With its compact design and easy installation, it's the perfect tool for proactive water management.

Specifications

Manufacturer	HM Digital
Part number	343433
Item Weight	68 g
Package Dimensions	13.59 x 10.59 x 2.01 cm; 68 g
Batteries	2 LR44 batteries required.
Item model number	SM-1
Material	Plastic
Power source type	Battery Powered
Installation Method	Countertop
Item Package Quantity	1
Special Features	Built In TDS Meter
Included components	Battery
Batteries Included?	No
Batteries Required?	No
Battery Cell Type	Alkaline

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