ph meter digital pen type meter for water ph meter for water

• 1. Screen double display:
• The conductivity + temperature is displayed on the screen at the same time, which is intuitive and convenient.
• °C/°F conversion: The temperature unit of the instrument is °C (degrees Celsius) at the factory. If you use the °F (Fahrenheit) temperature unit, you can press the "CAL" button to select.
• Note: The measured value shows "1---", indicating that the solution has exceeded the measurement range. Please replace the higher range.
• 2. Automatic temperature compensation:
• The "ATC" symbol is displayed in the lower left corner of the LCD to indicate that the meter is in the automatic temperature compensation mode.
• 3. Data retention function:
• Press the "HOLD" button, the current data will be locked, the "HOLD" symbol will appear on the screen, and the "HOLD" button will be pressed to unlock the mode.
• Overview:
• The pen conductivity meter is a portable pen precision instrument designed to display both conductivity and temperature values for field or field operation. The instrument is suitable for the determination of water quality conductivity meter in tap water source monitoring, aquaculture, environmental protection, printing and dyeing, electroplating, beverage industry and scientific research units.
• DDB-12H pen conductivity meter adopts single-chip technology, LCD display, automatic temperature compensation and temperature display function, one point correction. Integrated digital pen-type conductivity with electrodes, and the electrodes can be replaced and the housing can be waterproof.
• Conductivity meter: Conductivity is a numerical representation of the ability of a solution to conduct current. This indicator is often used to estimate the total or salt content of ions in water.
• Life knowledge:
• 1. Relationship between Conductivity and TDS Conductivity meter is a digital representation of the ability of a solution to conduct current. The conductivity of water has a certain relationship with the amount of inorganic acids, bases and salts contained in it. When their concentration is low, the conductivity increases with the increase of concentration. Therefore, this index is often used to estimate the total amount of ions in water. Concentration or salt content. The conductivity of the aqueous solution is directly proportional to the dissolved solids concentration TDS, and the higher the solids concentration, the greater the conductivity. The relationship between conductivity and dissolved solids concentration is approximately expressed as: 14 U S/cm1 ppm or 2 US/cm1 ppm per million units of CaCO3. The total hardness value of water can be indirectly obtained by using a conductivity meter or a total solids dissolution meter. As described above, the conductivity of 1 pS/cm is 0.5 ppm hardness for the purpose of approximate conversion. However, it should be noted that the hardness of water is measured indirectly by conductivity, and the theoretical error is about 20-30D water.
• 2. The conductivity meter of water is 0.055pSkm for ultrapure water; 0.5pS/Cm for distilled water; 50-800pS/Cm for tap water-lUS/Cm tap water; 56mS/Cm for clear water; 1105pS/Cm for saline drinking water One 100mS/Cm

Features:

• Model: DDB-12L
• Measuring range: 0-1999um
• Resolution: 1um
• Accuracy: +/-2um+1%FS
• Conductivity: 1413um
• Calibration: one point calibration
• Temperature display: 0.1 °C / °F
• Working temperature: 0~50°C (32~122°F)
• Automatic temperature compensation: 0~50°C
• Size: 40*185mm (including electrodes)
• Weight: 88g (including electrodes)