Milwaukee MA887 Digital Refractometer, Salinity, Sea Water

User Instruction Manual

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Milwaukee MA887 Digital Refractometer (Same as HANNA HI 96822)

The Milwaukee MA887 Digital Refractometer for Seawater Measurements is an optical instrument that employs the measurement of the refractive index to determine the salinity of natural and artificial seawater, ocean water or brackish inter-mediates. The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable for ship, shore or home use.

The Milwaukee MA887 Digital Refractometer is an optical device that is simple and quick to use. Samples are measured after a simple user calibration with distilled or deionized water. Within seconds, the refractive index and temperature are measured and converted into one of three 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 temperature (in °C or °F) is also displayed on the large dual level display along with helpful message codes.

Specifications

Range: 0 to 50 PSU 0 to 150 ppt 1 .000 to 1.114 S.G. (20/20) 0 to 80°C / 32 to 176°F

Resolution: 1 PSU 1 ppt 0.001 S.G. (20/20) 0.1°C / 0.1°F

Accuracy: ±2 PSU ±2 ppt ±0.002 S.G. (20/20) ±0.3°C / ±0.5°F

Light Source: yellow LED

Measurement Time: approximately 1.5 seconds

Minimum Sample Volume: 100 µL (cover prism totally)

Sample Cell: SS ring and flint glass prism

Temperature Compensation: automatic between 10 and 40°C (50 to 104°F)

Case Material: ABS

Enclosure Rating: IP 65

Battery Type: 1 x 9V (included)

Battery Life: 5000 reading

Auto-shut off: after 3 minutes of non-use

Dimensions: 192 x 102 x 67 mm

Weight: 420 g