Specifications

The MA887 is an optical instrument that employs the meas-
urement 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 associat-
ed with mechanical refractometers and is easily portable for
ship, shore or home use.
The MA887 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 sec-
onds, the refractive index and temperature are
measured and converted into one of three pop-
ular 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.
Key features include:
• Dual-level LCD
• Automatic Temperature Compensation (ATC)
• Easy setup and storage
• Battery operation with Low Power indicator (BEPS)
• Automatically turns off after 3 minutes of non-use
MA887
Digital Refractometer for Seawater Measurements
Specifications MA887
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 AA (included)
Battery Life 5000 reading
Auto-shut off after 3 minutes of non-use
Dimensions 192 x 102 x 67 mm
Weight 420 g
Ordering Information
MA887 is supplied complete with Mi0005 9V battery and instruction manual.
Stainless Steel Sample
Well and Prism
Place a few drops of the sample in
the well and press the READ key.
Liquid Cristal Display
(LCD)
Dual Level LCD with Primary and
Secondary Display.
Digital
Refractometers
New
46
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