HM Digital Meters

HM Digital Meters

HM Digital, Inc. is the only manufacture of economical in-line dual TDS monitors that measure total dissolved solids (TDS) levels of feed and product water lines simultaneously, an effective way to compare rejection rates and gauge reverse osmosis membrane, water filter, and water purification performance.

Features

Ideal for your large capacity filtration needs.
High flow design and a specially engineered single O-ring that seals on both side and top surfaces to ensure a simple leak free installation.
The sumps are constructed of durable reinforced polypropylene (not including clear) and are available in both 10″ length and 20″ length

High Flow Housing 2.5″ X 20″

⭣ Click Chart to Enlarge ⭣

PN	Description	Style	Range	Accuracy	Calibration Method	Battery
TDS-3	TDS meter with temperature and ATC	Handheld	0-9990 PPM	+/- 2%	screwdriver	(2)LR44
AP-1*	TDS meter with ATC	Handheld	0-5000 PPM	+/- 2%	pushbutton	(1)CR2032
AP-2*	0-9999 µs, push button calibration, ATC, temperature	Handheld	0-5000 µs	+/- 2%	pushbutton	(1)CR2032
com-100*	Professional level µs, ms, ppm, ppt meter	Handheld	varies	+/- 2%	pushbutton	(3)LR44
ORP-200*	Measures Oxidation Reduction Potential (Redox) and Temperature	Handheld	-999 to + 1000 mV	+/- 2mV	pushbutton	(3)LR44
PH-200*	Measures ph and Temeprature	Handheld	1-14 pH	+/- 0302 pH	pushbutton	(3)LR44
DM-1*	Budget. Displays TDS of he feed and product water with dual probes	In-Line	0-9990 PPM	+/- 2%	screwdriver	(2)LR44
DM-2*	Commercial. Displays TDS of the feed and product water with dual probe	In-Line	0-9990 PPM	+/- 2%	pushbutton	(2)AA
PS-100*	Monitors and controls TDS levels for high output commercial systems.	Panel	0-999 PPM	+/- 2%	screwdriver	N/A
PS-200*	Monitors and controls TDS levels of two water lines	Panel	0-999 PPM	+/- 2%	screwdriver	N/A
PS-202*	simultaneously monitors and controls the TDS levels of two water lines	Panel	0-999 PPM	+/- 2%	screwdriver	N/A
FM-2*	Five stage filter monitor tri color led faucet base indicator	Faucet Base	0-999 days/ 0-9999 gallons	+/- 1%	N/A	(2)AA