Water quality testing pen, also known asTSD test pen， TDS water quality testing pen is a simple and portable water quality testing tool used to test the TDS value or conductivity of water, in order to determine the purity or pollution level of water. It also has the function of testing water temperature and environmental temperature. The product can be widely used in the water treatment industry, drinking water industry, households, personal home travel, field operations, etc. as a tool for water quality inspection and discrimination.

TDS water quality testing pen is a simple and portable water quality testing tool used to test the TDS value or conductivity of water, in order to determine the purity or pollution level of water

Basic functions of TSD test pen:

1. Function of the ON/OFF/HOLD button:

Power on: In the off state, press this button to turn on the device. Automatic shutdown: If there is no operation after 60 seconds of use, it will automatically shut down. Manual shutdown: Press and hold the ON-OFF/HOLD button for 3 seconds to shut down. Manual locking: When the TDS value is high or the water temperature changes make it difficult to automatically lock the reading, press this button to manually lock the reading. When locked, the corresponding physical quantity unit symbol flashes to indicate.

2. Function selection button (MODE): By default, the test water quality displays the total dissolved solids value in ppm when turned on; Press this function key once to display the conductivity value of the tested water quality in μ s/cm, press again to display the Celsius temperature in ℃, press again to display the Fahrenheit temperature in ° F, and press again to repeat the cycle to display the above content.

3. CLEAR key function: reset to zero. Clear the lock reading. Retest.

4. Automatic testing and locking of readings: After resetting to zero, it can be inserted into water to automatically read, displaying the corresponding TDS value or conductivity μ s/cm value according to different water quality Then it automatically locks and the reading is in a locked state, with the corresponding unit symbol flashing.

5. Scale function: Scale according to national standards And appropriately refer to international usage conventions. The warning for direct drinking water follows the international trend of using TDS=40 as the boundary. Below 40, green backlight is displayed, indicating qualified direct drinking water; above 40, it indicates non direct drinking purified water.

6. Backlight function: It adopts low-power backlight, which is convenient for testing at night and in low light places. Simultaneously serving as a display of water quality range.

7. Manual adjustment: With manual adjustment function, it is easy to adjust during factory and calibration

8. Large screen display: adopting high distortion STN thin full transparency LCD screen, displaying 4-digit numbers and corresponding physical quantity units TDS reading range: 0-9999, symbol; Overflow, displaying Err

9. Supply voltage: CR2032 battery, DC3V； 210mAh。 3. Test range: TDS: 0-9999 ppm 4. Resolution:<1000, 1ppm, ≥ 1000, 10ppm; Automatic gear shifting. 5. Test accuracy: ± 2% 6 Temperature testing range: 0-99 ℃ (32-212 ℉ Fahrenheit), accuracy ± 0.1 ℃ 7 Operating environment: 0-50 ° C; maximum relative humidity of 95%.

TDS water quality testing pen is a simple and portable water quality testing tool used to test the TDS value or conductivity of water, in order to determine the purity or pollution level of water