SR725 pH/ mV/ DO/ Temp. 4-in-1 Meter

nt Features 1. Double parameters meter, with pH and DO electrode, also with calibration solution and special carrying case, easy to use. 2. Built-in microprocessor chip, with the intelligent functions of automatic calibration, automatic temperature compensation, data storage, function setting and automatic self-diagnose, auto power off and low voltage display etc. 3. Adopts digital filter and step slipping technology to intelligently improve meter' s response speed and result accuracy. " " will appear when reading to be stable. 4. It automatically recognizes 13 kinds of pH standard buffer solution. User can choose anyone from three series of buffer solutions: Europe & U.S.A. series, NIST series and China series. 5. Purified water and ammonia added purified water pH measuring mode can be set up, for this two special pH measuring modes, besides the general slope compensation, also added function of nonlinearity temperature compensation for pH values of solution to make measurement more accurate, especially suitable for use in the fields of electric power and petrochemical etc. 6. Equipped with new type of DO electrode with temperature and salinity sensor which makes DO measuring mode has auto temperature compensation, auto salinity compensation and manual barometric pressure compensation. It' s easy to use and accurate to measure. 7. Polarogram type DO electrode has special electrode calibration cap. Only needs 3 to 5 minutes for electrode polarization. Electrode adopts combination diaphragm cap which very convenient to use. Each DO electrode equips with three spare diaphragms caps. 8. Meter' s circuit board adopts SMT film-covering technology to improve meter' s production reliability. 9. Meter has the blue back light LCD display monitor. 10. Dustproof and waterproof meter meets IP57 rating. Technical parameter 1. pH: Measuring range ( -2.00 to 19.99) pH Resolution 0.1/ 0.01 pH Accuracy Meter: ± 0.01pH; connect meter with electrode: ± 0.02pH Temp. Compensation range ( 0 to 100) º C ( automatic) 2. mV: Measuring range ( mV/ ORP/ EH) -1999 mV to 0 to 1999mV Resolution 1mV Accuracy Meter: ± 0.1% FS, connect meter with electrode: ± 15mV 3. Dissolved Oxygen: Measuring range ( 0 to 40.00) mg/ L( ppm) ( 0 to 200.0) % Resolution 0.1/ 0.01 mg/ L( ppm) 1/ 0.1% Accuracy Meter: ± 0.10 mg/ L, connect meter with electrode: ± 0.40 mg/ L Temp. Compensation range ( 0 to 45) º C ( automatic) Salinity compensation range ( 0 to 45) ppt ( automatic) Barometric pressure compensation range ( 66 to 200) kPa ( manual) Automatic calibration Air saturated by water; water saturated by air Electrode type Polarogram type 4. Other Technical Parameters: Data storage 300 groups Storage content Series number, measuring value measuring unit and temperature, Power Two AA batteries ( 1.5V x2) Size and weight ( 360 x 270x 76) mm/ 1.7kg Quality and safety certification ISO9001: 2000, CE and CMC IP rating IP57 Dustproof and waterproof Package includes 1. SR725 portable meter; 4. pH calibration solution ( 4.00, 7.00, 10.01pH/ 50ml) 2. 201T-S plastic pH/ ATC 3-in-1 combination electrode 5. Carrying case 3. DO500 DO electrode 3pcs of membrane caps inner solution for DO probe ( 30ml)