Extech Extech RF20 Manual
User's Guide
Portable Salinity Refractometer with ATC
Model RF20
Introduction
Congratulations on your purchase of the Extech RF20 Handheld Salinity Refractometer
with Automatic Temperature Compensation. This precision optical instrument should be
handled gently; avoid touching the optical surface. Careful use of this instrument will
provide years of reliable service.
Test Equipment Depot, 99 Washington Street, Melrose, MA 02176
781.665.1400 | 800.517.8431 | Fax: 781.665.0780
99 Washington Street
Melrose, MA 02176
Phone 781-665-1400
Toll Free 1-800-517-8431
Visit us at www.TestEquipmentDepot.com
Back to the Extech RF20 Product Info Page
Specifications
Scale Range Resolution
Parts Per Thousand 0 to 100 0/00 1
Specific Gravity 1.000 to 1.070 d20/
Dimensions 7.6 x 1.5 x 1.5" (194 x 38 x 38mm)
Weight Approx. 8.0 oz. (227g)
0.001 d
20
0
/00
20
/
Description
1. Prism
2. Cover Plate
3. Adjustment Screw
4. Mirror Tube
5. Eyepiece
1 2 3 4 5
20
2
RF20 Version 1.1 September 2003