Extech Instruments NON-DISPLAY PORTABLE Guia do Utilizador Página 1

User's Guide Digital Dissolved Oxygen, Conductivity, TDS and pH Meter Model DO700

DO700 V1.0 8/09 10mV Measurement Mode 1. Unscrew the protective cap on the probe jack located on the bottom of the meter (store the protective cap

DO700 V1.0 8/09 11Conductivity Measurement Mode Preparation for Measurement 1. Unscrew the protective cap on the probe jack located on the bottom

DO700 V1.0 8/09 12Measuring range 0.05 to 20μS/cm 0.5μS/cm to 200mS/cmElectrode constant K=0.1cm-1 (flow test) K=1.0cm-1 Calibration solution 84μ

DO700 V1.0 8/09 13Programming Parameters - Conductivity The Table below shows the available programming menu items P1 ~ P9. Each parameter is expla

DO700 V1.0 8/09 14Parameter P3 (Reference Temperature Selection) 1. From the P3 menu, use the CAL or the M+/RM keys to select the desired referenc

DO700 V1.0 8/09 15Conductivity Measurement, Calibration, and Maintenance Considerations • The meter and probe are calibrated before leaving the fa

DO700 V1.0 8/09 16Dissolved Oxygen (DO) Measurements Preparation • Remove the DO electrode from the solution bottle. • Determine if the sponge in

DO700 V1.0 8/09 17 Dissolved Oxygen Water Sample Test • To measure moving water (water sample velocity of flow >5cm/s) insert the DO electrode

DO700 V1.0 8/09 18Parameter Settings Prompt Parameters Code Selections P1 Resolution selection 0.01/0.1(mg/L and ppm) 0.1/1(%) P2 Salinity

DO700 V1.0 8/09 19 P4 - Temperature unit of measure selection • Use the CAL or the M+/RM keys to select the desired unit of measure (oC or oF). • M

DO700 V1.0 8/09 2 Introduction Congratulations on your purchase of the Extech DO700 meter. For best results, please read the entire manual before u

DO700 V1.0 8/09 20 Zero Dissolved Oxygen Calibration The meter receives a zero oxygen calibration before leaving the factory and only requires a ze

DO700 V1.0 8/09 21Specifications pH Specifications Measuring range -2.00 to 19.99 pH Resolution 0.1/0.01 pH Accuracy Meter only: ±0.01pH; with pr

DO700 V1.0 8/09 22Appendices Appendix A - Abbreviation Glossary Code or Abbreviation Translation Description Solution Standard solution Chinese

DO700 V1.0 8/09 23Appendix B – DO of Saturated Water vs. Temperature Temperature ℃ DO mg/L @ 1 atm Temperature ℃ DO mg/L @ 1 atm Temperature ℃

DO700 V1.0 8/09 24Appendix C - DO of Saturated Water vs Barometric Pressure and Temperature Barometric pressure Dissolved Oxygen Concentration (m

DO700 V1.0 8/09 25Appendix D – DO of Saturated Water vs. Altitude Altitude Barometric pressure DO (25°C) Altitude Barometric pressure DO (25°C) Fe

DO700 V1.0 8/09 26 Support line (781) 890-7440 Technical Support: Extension 200; E-mail: [email protected] Repair & Returns: Extension 210;

DO700 V1.0 8/09 3 Supplied Equipment List • DO700 Meter • Dissolved Oxygen, Conductivity, and pH Electrode • Standard pH buffer solutions (4.00pH

DO700 V1.0 8/09 4 Display Description 1. Measurement type icons 2. Measured reading 3. 888 (Stored data serial number), M+ (measurement to be sto

DO700 V1.0 8/09 5 Store, Recall, and Clear Datalogger Memory STORE Readings The meter can store up to 100 DO, 100 pH, 100 mV, and 100 Conductivity

DO700 V1.0 8/09 6 pH Measurement Mode Preparation for Measurement 1. Unscrew the protective cap on the probe jack located on the bottom of the met

DO700 V1.0 8/09 7 Testing the pH of a Sample 1. Perform the pH Calibratoin as described above 2. Rinse and dry the pH Probe and submerge it in a

DO700 V1.0 8/09 8 Parameter P1 (pH Buffer Solution Setting) 1. From the pH measurement mode, press and hold MODE for at least 2 seconds and then

DO700 V1.0 8/09 9 pH Measurement, Calibration, and Electrode Considerations • Error messages ERR-1: Electrode zero potential error and ERR-2: Elec