Digital Online TDS Meter LCD Display Salinity Dissolved Oxygen Total Hardness Water Quality Purity Tester for School Laboratory

Battery Included : No High-concerned chemical : None With Backlight Or Not : No Display Type : DIGITAL

Origin : Mainland China HMSM1 : Single TDS detector HMTRM1 : Three channel TDS detector Range : 0-9990 ppm Accuracy : ±2%

Digital Online TDS Meter LCD Display Salinity Dissolved Oxygen Total Hardness Water Quality Purity Tester for School Laboratory

FEATURES： Displays TDS level of a single water line or three water lines.（optional）

Highly efficient and accurate due to its advanced microprocessor technology.

Auto-Off function conserves battery power. The unit shuts off automatically after 10 minutes of non-use.

Wide Range 0-9990 ppm (From 0 - 999 ppm the resolution is 1 ppm. From 1000 to 9990 ppm, the resolution is 10 ppm, indicated by a blinking 'x10' image.)

Factory Calibrated:our meters are calibrated with a 342 ppm NaCl solution. Meters can be recalibrated with a mini-screwdriver.

Comes equipped with Mur-lok ® Quick-Connect T-fitting (1/4 inch standard, also available in 3/8" or 1/2" ).

Installs quickly and easily. SPECIFICATIONS： Range: 0-9990 ppm

Accuracy: ±2%

Conversion Factor: NaCl (avg. 0.5)

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 0.8 x 1.9 in.)

Weight: 79.4 g (2.8 oz.) SM-1（Single way TDS detector） TRM-1（Three ways TDS detector）