เครื่องวัดความขุ่น Turbidity Meter HI88713 จาก Hanna

เครื่องวัดความขุ่น Turbidity Meter รุ่น HI88713 จาก Hanna Instrument สำหรับวัดความขุ่น 3 หน่วยคือ  FNU (Formazin Nephelometric Units) FAU (Formazin Attenuation Units) และ NTU (Nephelometric Turbidity Units) โดยมีย่านการวัด 0.00 ถึง 1000 FNU และ 10.0 ถึง 4000 FAU และ 0.00 ถึง 4000 NTU (ratio mode) และ 0.00 ถึง 1000 NTU (non-ratio mode).

รายละเอียด HI88713

• Four Measurement Modes: The HI88713 features four options for turbidity measurement: FNU (Formazin Nephelometric Units), FAU (Formazin Attenuation Units), and NTU (Nephelometric Turbidity Units) ratio and non-ratio mode. Turbidity ranges for each mode are 0.00 to 1000 FNU, 10.0 to 4000 FAU, 0.00 to 4000 NTU (ratio mode), and 0.00 to 1000 NTU (non-ratio mode).
• Multiple Turbidity Units of Measure: Turbidity can be read as Formazin Nephelometric Units (FNU), Formazin Attenuation Units (FAU), European Brewing Convention units (EBC), and Nephelometric Turbidity Units (NTU).
• ISO Compliant: The HI88713 meets and exceeds the requirements of ISO 7027 method for turbidity measurements by use of an infrared LED light source.
• Calibration: The HI88713 has a powerful calibration function that compensates for variation in light intensity. The calibration can be done using the supplied calibration solutions or user-prepared standards. A two, three, four, or five-point turbidity calibration can be performed by using the supplied (<0.10, 15, 100, 750 FNU, and 2000 NTU) standards. Calibration points can be modified if user-prepared standards are used.
• AMCO AEPA-1 Primary Turbidity Standard: The AMCO AEPA-1 supplied standards are recognized as a primary standard by the USEPA. These non-toxic standards are made of styrene divinylbenzene polymer spheres that are uniform in size and density. The standards are reusable and stable with a long shelf life.
• GLP Data: The HI88713 features complete GLP (Good Laboratory Practice) functions that allow traceability of the calibration conditions. Data includes calibration points, date, and time.
• Data Logging: Up to 200 measurements can be stored in the internal memory and recalled at any time.
• Data Transfer: For further storage or analysis options, logged data can be downloaded to a Windows compatible PC using the USB port and the HI92000 software.
• Tutorial Mode:  The unique tutorial mode provides additional information to help the user during measurements. When enabled, the instrument displays explanations and a confirmation button when a preparation or other operation has to be performed.
• Contextual Help: Contextual help is always available through a dedicated HELP button. Clear tutorial messages and directions are available on-screen to quickly and easily guide users through setup and calibration.  The help information displayed is relative to the setting/option being viewed.
• Backlit Graphic LCD Display: A graphic LCD display provides an easy to understand, user-friendly interface. All messages are in plain text making them easy to read

Specification HI88713

• FNU Range 0.00 to 9.99 FNU, 10.0 to 99.9 FNU, 100 to 1000 FNU
• FNU Resolution 0.01 FNU, 0.1 FNU, 1 FNU
• FNU Accuracy ±2% of reading plus stray light
• FAU Range 10.0 to 99.9 FAU, 100 to 4000 FAU
• FAU Resolution 0.1 FAU, 1 FAU
• FAU Accuracy ± 10% of reading
• Non-Ratio Mode Range 0.00 to 9.99 NTU; 10.0 to 99.9 NTU; 100 to 1000 NTU 0.00 to 9.99 EBC; 10.0 to 99.9 EBC; 100 to 245 EBC
• Non-Ratio Mode Resolution 0.01; 0.1; 1 NTU; 0.01; 0.1; 1 EBC
• Non-Ratio Mode Accuracy ±2% of reading plus stray light
• Ratio Mode Range 0.00 to 9.99 NTU; 10.0 to 99.9 NTU; 100 to 4000 NTU 0.00 to 9.99 EBC; 10.0 to 99.9 EBC; 100 to 980 EBC
• Ratio Mode Resolution 0.01; 0.1; 1 NTU; 0.01; 0.1; 1 EBC
• Ratio Mode Accuracy ±2% of reading plus stray light, ±5% of reading above 1000 NTU
• Range Selection automatic
• Repeatability ±1% of reading or 0.02 NTU (0.15 Nephelos; 0.01 EBC) whichever is greater
• Stray Light < 0.02 NTU (0.15 Nephelos; 0.01 EBC)
• Light Detector silicon photocell
• Method nephelometric method (90°) or ratio nephelometric method (90° & 180°), adaptation of the USEPA Method 180.1 and Standard Method 2130 B
• Measuring Mode normal, average, continuous
• Turbidity Standards < 0.1, 15, 100, 750 and 2000 NTU
• Calibration two, three, four, or five-point calibration