Seawater Refractometer

Seawater Refractometer

HA-96822 Digital Seawater 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. 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).

Specifications	HA-96822
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 3 minutes of non-use
Enclosure Rating	IP 65
Battery Type / Battery Life	9 V / Approx. 5000 readings
Dimensions / Weight	192 x 102 x 67 mm (7.6" x 4" x 2.6"), 420 g