DIGITAL REFRACTOMETER 300033, 300034, 300035, 300036 INSTRUCTION MANUAL
CONTENTS Title Page 1. Introduction .................................................... 2 2. Panel Description .......................................... 3 3. Operating Instructions 3-A. General Measurement ......................... 4 3-B. Changing the Temperature Scale ........ 4 3-C. ATC ...................................................... 4 3-D. Calibration Procedures ........................ 4 3-E. Scale Selection .................................... 5 3-F. Range Limit Alert .......................
2. PANEL DESCRIPTION 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. High/Low Range Limit Alert READ and Enter ZERO and ► SCALE and ▼ FUNC and Y/N ON and OFF LCD Prism plate Prism Cover 1 2 3 4 5 6 7 8 FACEPLATE & LCD DISPLAY 1. Prism Temperature 2. ATC (activated when displayed) 3. High Limit Alert 4. Low Limit Alert 5. Low Battery 6. Measurement Value 7. Calibration Error 8. Scale Indicator 9 1 10 2 3 4 5 76.4°F ATC H-Limit L-Limit nD -1.8.8.8.
3. OPERATING INSTRUCTIONS 3-A. General Measurement To avoid damage, it is important to clean the PRISM WINDOW before and after use. Press the ON/OFF button to turn the Digital Refractometer on. The unit will automatically shut off after about 3 minutes of inactivity. Perform the Calibration Procedures (below). With the unit on, fill the PRISM WINDOW with the sample to be measured, then close the COVER. Press the READ button immediately to ensure accurate readings.
3-E. Scale Selection: Press the SCALE button to toggle though the scales. The ▼ symbol indicates the active scale. 3-F. High/Low Range Limit Alert: A red light will flash when the measurement is outside of the range limit. Setting the High Range Limit Alert With the unit on, press the FUNC button as needed until H.L Y and the flashing H-Limit icon is displayed. Press the READ button and the last digit flashes. Use the ▼ and the ◄ buttons to set the high range limit.
3-H. Battery Replacement When the battery is low, this symbol will be displayed: Open the back cover to replace the 9V battery. Reinsert the back cover, making sure it is properly seated. A built-in gasket protects the circuitry from spills. Note: The battery provided with your instrument is primarily intended to check that the unit operates properly. The battery itself is not guaranteed and should be replaced when the low battery symbol is displayed. 3-I.
4. SPECIFICATIONS Models Type Range Res. Accuracy Brix 45.0~95.0% 0.1% ±0.2% nD 1.4098~1.5318 0.0001 ±0.001 Brix 0.0~95.0% 0.1% ±0.2% nD 1.330~1.5318 0.0001 ±0.001 Brix 0.0~60.0% 0.1% ±0.2% Salinity 0.0~28.0% 0.1% ±0.1% Salinity PPT 0~280 1 ±1 nD 1.3330~1.4419 0.0001 ±0.001 USG 1.000~1.090 0.001 ±0.002 Serum Protein 0.0~12.0 0.1 ±0.1 nD 1.330~1.4098 0.0001 ±0.001 0~40°C 0.1°C ±1°C -32~104°F 0.
1 YEAR WARRANTY Sper Scientific warrants this product against defects in materials and workmanship for a period of one (1) year from the date of purchase, and agrees to repair or replace any defective unit without charge. If your model has since been discontinued, an equivalent Sper Scientific product will be substituted if available. This warranty does not cover probes, batteries, or damage resulting from accident, misuse, or abuse of the product.
