HI97761 สำหรับการวัดคลอรีนรวม Total Chlorine Ultra Low Range เป็นเครื่องวัดค่าคลอรีนแบบพกพามีความถูกต้องแม่นยำและใช้งานง่าย มีย่านการวัด 0.000 to 0.500 mg/L (ppm) มีความละเอียด 0.001 mg/L มีความถูกต้อง ±0.020 mg/L ±3%
ใช้หลักการวัดตามวิธี USEPA 330.5 เพื่อวัดความเข้มข้นของคลอรีนรวม ฟังก์ชั่น CAL Check ™ พิเศษที่ใช้สำหรับการตรวจสอบสมรรถนะและการสอบเทียบ ออกแบบมาให้พกพาง่ายเเละใช้งานสะดวก
คุณภาพสูงจาก USA มีใบรับรองการสอบเทียบ (Certificate) จากโรงงาน มีคู่มือการใช้งานภาษาไทย ขายราคาถูก จัดส่งทั่วไทย
การสั่งซื้อ HI97761 มี 2 รุ่นดังนี้
- รุ่น HI97761C หมายถึงรุ่นทีอยู่ในบรรจุภัณฑ์แบบกระเป๋าหิ้ว อุปกรณ์น้ำยา CAL Check™(ต้องซื้อ Reagents เพิ่มเท่านี้น)
- รุ่น HI97761 หมายถึงรุ่นทีมีแต่เครื่องวัด (ต้องซื้อน้ำยามาตรฐานเพิ่มเติมได้แก่ น้ำยา CAL Check™ และ Reagents)
Specification
| SKU | HI97761 | |||
|---|---|---|---|---|
| Product Name | Total Chlorine Ultra-Low-Range Portable Photometer | |||
| Total Chlorine Range | 0.000 to 0.500 mg/L (as Cl2) | |||
| Total Chlorine Resolution | 0.001 mg/L | |||
| Total Chlorine Accuracy | ±0.020 mg/L ±3% of reading at 25°C | |||
| Total Chlorine Number of Tests | adaptation of the EPA Method 330.5 | |||
| Photometer/Colorimeter Light Source | LED with 525 nm bandpass filter | |||
| Photometer/Colorimeter Light Detector | silicon photocell | |||
| Bandpass Filter Bandwidth | 8 nm | |||
| Bandpass Filter Wavelength Accuracy | ±1.0 nm | |||
| Cuvette Type | round 24.6 mm diameter (22 mm inside) | |||
| GLP | yes | |||
| Display | 128 x 64 pixel B/W LCD with backlight | |||
| Logging Memory | 50 readings | |||
| Battery Type/Life | 1.5 V AA Alkaline (3 pcs.) / > 800 measurements (without backlight) | |||
| Automatic Shut-Off | after 15 minutes of inactivity (30 minutes before a READ measurement) | |||
| Environment | 0 to 50°C (32 to 122°F); 0 to 100% RH (IP67) | |||
| Weight | 380 g (13.4 oz.) | |||
| Dimensions | 142.5 x 102.5 x 50.5 mm (5.6 x 4.0 x 2.0") | |||
| Ordering Information | HI97761C is supplied with CAL-Check standards, cuvettes (2), caps (2), plastic inserts for cuvette, (2), scissors, cuvette cleaning cloth, 1.5V AA batteries (3), instruction manual, and instrument quality certificate packaged in a rugged thermoformed carrying case. |
PDF Catalog
As one of the oldest and most common forms of disinfection, chlorine improves water quality by destroying disease-producing microorganisms, and by reacting with other organic and inorganic substances.
Chlorine levels must be actively monitored to ensure sufficient chlorine is present for disinfection, as well as to control adverse effects such as taste, odor, and potential reactions with organic matter to form harmful disinfection byproducts.
The HI97761 uses an adaptation of the USEPA method 330.5 to measure total chlorine concentrations up to 0.500 mg/L (ppm). When the DPD reagent is added to samples containing total chlorine, the sample will turn a pink hue; the greater the concentration, the deeper the color.
The associated color change is then calorimetrically analyzed according to the Beer-Lambert Law. This principle states that light is absorbed by a complementary color, and the emitted radiation is dependent upon concentration.
For total chlorine determination, a narrow band interference filter at 525 nm allows only green light to be detected by the silicon photodetector and omits all other visible light emitted from the LED. As the change in color of the reacted sample increases, absorbance of the specific wavelength of light also increases, while transmittance decreases. Using a pre-programmed curve a result is then displayed.
The HI97761 has an innovative optical system that offers superior performance in accuracy, repeatability, and the short amount of time it takes to perform a measurement. This compact, waterproof meter is extremely user friendly with a tutorial mode that walks the user graphically, step by step, in performing a measurement.
The use of a backlit dot matrix LCD allows the use of virtual keys which makes the operation of the meter very intuitive including selecting different units of measure, reviewing GLP data, recalling the last 50 measurements, and customizing the meter to user preferences.
HI97761 is completely waterproof including the cuvette holder that is designed with ridges to protect the optical path from getting scratched by the cuvette and a gasketed battery compartment that holds three common AA batteries.
The compact design fits comfortably in the hand for use in the field or on a table for benchtop use. The LCD is backlit for easy viewing under all conditions.
