HM-DIGITAL-DM-2

DM-2 HM Digital Commercial Inline Dual TDS Monitor

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$53.29

Dual sensors to provide both inlet and outlet TDS readings
Dual resolution suits the unit to both residential and commercial applications
3 minute auto shut-off to conserve battery life
No tool digital calibration of each sensor independently

format_list_bulleted Features & Specs

Package Qty: 1

Manufacturer: HM Digital

Manufacturer's Id: DM-2

UPC: 799705707115

Actual Size (in): 4 3/5 inches (height) x 2 3/5 inches (width) x 7/10 inch (depth)

Brand: HM Digital

Depth (in): 0.7 in

Fitting Size (in): 14 in

Height (in): 4.6 in

Width (in): 2.6 in

Power Requirements: 2 x AA Batteries (included), Battery Life: Approximately 12 to 18 Months

Country of Origin: China

Fitting Type: Quick Connect

description Instructions

The DM-2 is designed to be used with flowing water. Due to nature of mobile charged ions in electrical conductivity and flowing water, it is normal to experience discrepancies and fluctuations within 2% of the readings
Make sure the sensor is properly inserted into the fitting. Once the sensor has been inserted into the fitting, look through it. You should only see one metal probe
Always wait 10-20 seconds for more accurate readings. Rinse in de-ionized water or alcohol after prolonged use to ensure proper readings. Do not drop or submerge unit in water. Do not store unit in high temperature or direct sunlight
HM Digital monitors are factory-calibrated at 342ppm NaCl. Calibrate as close as possible to the test sample. Ensure accuracy by recalibrate your meter using a commercial standard solution at 25 degrees C (77 F); prior to usage and after prolonged usage
For drinking water, it is recommended to calibrate in a range of 90 ppm to 700 ppm. On the DM-2, calibration for both sensors is simultaneous. You need a tube/hose that is the same size as the fittings., a bucket or basin, and a pump
Step 1: Attach the IN and OUT sensors to the tubing that you will use for the calibration. It will be necessary to cut the tube in two places so that the solution will be running through both and so that the sensors are not too far apart from each other
Step 2: Configure the tube within a bucket or basin, using a pump so that the calibration solution will be cycled through the tube. In other words, the calibration solution needs to be flowing over both sensors to calibrate properly
Step 3: Turn on and measure calibration solution. If reading is not within 2% of solution
Step 4: Once the meter reads within 2% of the solution, gently release pressure on the screwdriver and remove from the trimmer pot. If the screwdriver is retracted abruptly, the reading may jump
Step 5: Turn the monitor off and on. Verify the readings for both sensors. If the readings are accurate with 2%, calibration is complete. If not, repeat the procedure

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User Guide

warning

Prop65 warning applies to products that contain carbon media. Click here for more details

WARNING: This product can expose you to chemicals including arsenic, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information go to www.p65warnings.ca.gov

help Product Details

The DM-2 is the perfect companion to any reverse osmosis or deionization system. You need to know the inlet and outlet TDS to truly know when to replace your membrane or resin. Simplify this process by installing the DM-2. Designed to be easy enough to install in residential applications, but built tough enough for industrial use, the DM-2 is a highly accurate TDS meter with a very long two year battery life, and large easy to read LCD.

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