SM1 Single / TRM1 Triple Online TDS Meter 0-9990PPM — LCD Water Purity Tester / PH Meter

Two selectable models: SM1 Single TDS Meter (one probe) or TRM1 Triple TDS Meter (three probes). Compact online TDS tester with LCD readout designed to monitor water purity and show TDS for a single or triple water line. Measurement range: 0-9990 ppm. Resolution: 0–999 ppm = 1 ppm resolution; 1000–9990 ppm = 10 ppm resolution (the display shows a blinking 'x10' when in the 10 ppm range). Factory calibrated using a 342 ppm NaCl solution; field recalibration is possible with a mini-screwdriver. Built around an advanced microprocessor for reliable, accurate readings with ±2% accuracy. Conversion factor: NaCl (avg. 0.5). Power and runtime: runs on 2 x 1.5V button cell batteries (LR44 or equivalent) — batteries included — with approximately 1000 hours of continuous use. Auto-Off feature powers the unit down after 10 minutes of inactivity to save battery. Supplied with a Mur-lok®Quick-Connect T-fitting (1/4" standard); fittings also available in 3/8" or 1/2" for fast, tool-free installation. Cable length (including sensor): 24.5". Physical size: 7.6 x 2 x 4.7 cm (3 x .8 x 1.9 in.). Weight: 79.4 g (2.8 oz.).