เครื่องวัดความเค็ม แบบภาคสนาม รุ่น HI96822 สำหรับน้ำทะเล

เครื่องวัดความเค็ม Salinity meter รุ่น HI96822 จาก Hanna การวัดความเค็มของน้ำทะเล น้ำกร่อยหรือตู้ปลาน้ำเค็ม แสดงความเค็มได้ 3หน่วย Practical Salinity Units (PSU) และ Parts per thousands (PPT) และ Specific Gravity โดยมีย่านการวัด 0 to 50 PSU และ 0 to 150 ppt และ 1.000 to 1.114 Specific Gravity (20/20) เพื่อให้มั่นใจความถูกต้องมีการสอบเทียบน้ำกลั่นหรือน้ำปราศจากไอออน (Deionized water) เหมาะสำหรับทดสอบความเค็มของน้ำทะเล น้ำกร่อยหรือตู้ปลาน้ำเค็ม สินคุณภาพสูงจาก USA มีใบรับรองการสอบเทียบ (Certificate)

• The dual-level LCD displays measurement and temperature readings simultaneously
• Automatic Temperature Compensation for accurate measurements
• Easy measurement; place a few drops of the sample in the well and press the READ key
• BEPS (Battery Error Prevention System) alerts the user in the event that low battery power could adversely affect readings.
• IP65 water protection; built to perform under harsh laboratory and field conditions.
• Quick, accurate results, readings are displayed in approximately 1.5 seconds.
• Single point calibration with distilled or deionized water
• Small sample size, can be as small as 2 metric drops.
• Automatic shut-off after three minutes of non-use
• Stainless steel sample well, easy to clean and corrosion resistant
• ABS thermoplastic casing

 

HANNA‘s HI?96822 Digital Refractometer is a rugged, portable, water resistant device that utilizes the measurement of the refractive index to determine the salinity of natural and artificial seawater, ocean water or brackish intermediates. The HI?96822 reflects HANNA‘s years of experience as a manufacturer of analytical instruments. This digital refractometer eliminates the uncertainty associated with mechanical refractometers and is durable and compact enough to be used at home, in the lab and out in the field.

The HI 96822 is an optical device that is quick and easy to use. After a simple user calibration with distilled or deionized water, a seawater sample can be introduced into the sample well.

Within seconds, the refractive index and temperature are measured and converted into one of 3 popular measurement units: Practical Salinity Units (PSU), salinity in parts per thousand (ppt), or specific gravity (S.G. (20/20)). All conversion algorithms are based upon respected scientific publications using the physical properties of seawater (not sodium chloride).

The Importance of Salinity Measurement Throughout a Variety of Applications

Salinity is a critical measurement in many applications, such as aquaculture, environmental monitoring, aquariums, desalination plants, well water, and many more. Until now, the available technology to measure salinity has relied on mechanical instruments, such as hydrometers and ocular refractometers, or on high-tech conductivity meters.  While easy to use, ocular refractometers can be difficult to get a accurate reading from and are highly susceptible to changes in temperature.  Hydrometers, though inexpensive, are clumsy and inaccurate.  Conductivity meters that convert to salinity can be cost-prohibitive.

The HANNA HI 96822 is the solution to all these issues.  It is lightweight, easy to use, cost-efficient, and is extremely accurate.  With the ability to read in all the three of the most widely used salinity units (PSU, ppt, and specific gravity), it is the ideal instrument for any application.

 

Order Information:   HI 96822 is supplied with battery and instruction manual.

  Manual: Download

Specification

Range	PSU	0 to 50
	ppt	0 to 150
	Specific Gravity (20/20)	1.000 to 1.114
	Temperature	0 to 80°C (32 to 176°F)
Resolution	PSU	1
	ppt	1
	Specific Gravity (20/20)	0.001
	Temperature	0.1°C (0.1°F)
Accuracy (@20°C)	PSU	±2
	ppt	±2
	Specific Gravity (20/20)	±0.002
	Temperature	±0.3°C (0.5°F)
Temperature Compensation		automatic between 10 and 40°C (50 to 104°F)
Measurement Time		approximately 1.5 seconds
Minimum Sample Volume		100 µL (to cover prism totally)
Light Source		yellow LED
Sample Cell		stainless steel ring and flint glass prism
Auto-off		after three minutes of non-use
Enclosure Rating		IP 65
Battery Type / Battery Life		9V / approximately 5000 readings
Dimensions / Weight		192 x 104 x 69 mm (7.6 x 4.1 x 2.7”) / 420 g (14.8 oz.)