Precise measurements of pH/DO in fields of biotechnology, aquaculture, power plant and environmental protection, and also more widely used in areas of education and scientific research.
Main Features:
- 7 inch color capacitive screen with high resolution (1024*600) and sensitivity, which can show more parameters, more intuitive and simpler to read data.
- Auto calibration, auto temperature compensation, data storage, USB data export, clock, wireless printing, function setup, smart self-diagnosis and other intelligent functions.
- English and Chinese operating system, humanized design with adjustable screen brightness.
- Auto recognition of standard pH buffer solutions and there are three kinds of standard buffers for option: USA series, NIST series and China series.
- Built-in big memory can store 1000 sets of test data which can be saved and transferred to USB and opened with Excel, very easy and convenient for edit.
- DO mode has functions of ATC, auto salinity compensation and auto pressure compensation.
- New structure polarographic DO electrode can measure temperature, salinity and dissolved oxygen simultaneously, equipped with special DO electrode calibration sleeve, only need 3~5 min for polarization.
- Combined diaphragm cap makes it extremely convenient to replace the sensitive membrane just by screwing the new cap to the electrode.
- DO measurement is polarographic and suggested to be used with our magnetic stirrer or other appropriate models chosen by customers.
- With standard Bluetooth module and support wireless Bluetooth printing to make operations much easier for users. Optional data transmission to PC and cell phone via Bluetooth.
- IP54 dustproof and waterproof housing.
Specifications
| pH | Measuring range
Resolution Accuracy Input current Input impedance Stability Temp Compensation range |
(-1.99 ~ 19.99) pH
0.1/0.01 pH ±0.02 pH ≤1×10-12 A ≥1×1012 Ω ±0.01pH/3h (0 ~ 100)℃ (auto or manual) |
| mV | Measuring range(mV/ORP/EH)
Resolution Accuracy |
-1999.9mV ~ 0 ~ 1999.9mV
1mV ±0.1% FS |
| DO | Measuring range
Resolution Accuracy Response time Residual current Temp compensation range Salinity compensation range Air pressure compensation Automatic calibration Electrode type |
(0 ~ 20.00) mg/L(ppm)Â (0 ~ 200.0)%
0.1/0.01 mg/L(ppm)   1/0.1% Electrode: ±0.10 mg/L, Instrument: ±0.40 mg/L ≤30 s (25℃, 90% response） ≤0.1 mg/L (0 ~ 100)℃ (automatic) (0 ~ 45) ppt (automatic) (80 ~ 105) kPa (automatic) Air saturated by water, water saturated by air Polarographic |
| Temperature | Measuring range
Resolution Accuracy |
-10℃~ 110℃
0.1℃ 5~ 60℃: ±0.4℃ Others: ±0.8℃ |
| Other Parameters | Data storage
Storage contents
Power Communication connectors Dimensions & Weight |
1000 groups
Measurement series number, measuring value, temperature, ATC or MTC state, measuring date and time DC12V/1A Wireless Bluetooth, USB 240 × 170 × 70mm/600g |
| Working Conditions | Ambient temperature
Ambient humidity IP grade |
5 ~ 35 ℃
≤85% IP54 |
Standard configuration
- T721 pH/DO meter                             1 unit
- Composite pH electrode                        1 pc
- DO electrode                                  1 pc
- Rotary electrode holder                         1 pc
- pH buffer (pH4.00, pH6.86, pH9.18/50ml）          1 set
- 12V power adapter                             1 pc
- DO membrane cap                              3 pcs
- DO electrode electrolyte (30ml)Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1 bottle
- Instruction manual in USBÂ Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â 1 copy
