SM-1: In-Line Single TDS Monitor

Product details

SM-1: In-Line Single TDS Monitor is a compact, battery-powered meter designed to measure Total Dissolved Solids (TDS) in water using in-line installation. It’s intended for RO/DI or other aquarium water lines where you want to quickly check feed water and product water readings to help confirm performance and monitor changes over time. The unit reads TDS across the installed probes (in or out of line), displaying the result so you can spot trends and decide when maintenance or filter service may be needed.

Features:

• Displays TDS levels of feed water and product water using in-line electrode probes.
• Uses advanced microprocessor technology for highly efficient and accurate readings.
• Auto-Off conserves battery power by shutting off after 10 minutes of non-use.
• Single measurement range covering 0–9990 ppm, with resolution changing at 1000 ppm (with a blinking “x10” indicator above 1000 ppm).
• Factory calibrated with a 342 ppm NaCl solution; can be recalibrated using the included mini-screwdriver.
• Includes Mur-lok® Quick-Connect T-fittings for quick, secure installation.
• Compact design for easy integration into standard 1/4" RO/DI tubing setups.

Specifications:

• Measurement range: 0–9990 ppm
• Accuracy: ±2%
• Conversion factor: NaCl (avg. 0.5)
• Resolution: 1 ppm from 0–999 ppm; 10 ppm from 1000–9990 ppm (blinking “x10” indicator)
• Probe cable length: 24.5" (including sensor)
• Fittings: 1/4" standard (also available with 3/8" or 1/2")
• Power source: 2 x 1.5V button cell batteries (LR44 or equivalent; included)
• Battery life: approx. 1000 hours of continuous use
• Size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.)
• Weight: 79.4 g (2.8 oz.)