Products Catalog

Specification

The MA 887 is an optical instrument that employs the measurement of the refractive index to determine the salinity natural and artificial seawater, ocean water or brackish intermediates. The digital refractometer eliminates the uncertainty associated with mechanical refractometers and is easily portable for ship, shore or home use.

The MA 887 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 unit ( PSU) , Salinity in parts per thousand ( ppt) , or specific gravity ( S.G. ( 20/ 20) ) .

All conversion algorithms are based uopn respected sciencetific publications using the physical properties of seawater( not sodium chloride) . the temperature ( in oC or oF) is also displayedon the large dual level display along with helpful message codes.

Specifications:

Range : 0 to 50 PSU
0 to 150 ppt
1.0 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)
± 0.3oC/ ± 0.5oF
Ligth source: yellow LED
Measurement time: approximately 1.5 seconds
Minimum sample volume: 100 µ L ( cover prism totally)
Sample cell : SS ring and flint glas prism
Temperature compensation: automatic between 10 and 40 C ( 50 to 104 F)
Case material: ABS
Enclosure rating: IP 65
Battery tipe : 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