Touch Screen Precise pH/DO Meter



CAT NO: T-721

SKU: EA-11244-278


Touch Screen Precise pH/DO Meter


Precise pH/DO Meter

T-721 Precise pH/Dissolved Oxygen Meter by Peak Instruments

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.
Measuring range (-1.99 ~ 19.99) pH
Resolution 0.1/0.01 pH
Accuracy ±0.02pH
Input current ≤1×10-12 A
Input impedance ≥1×1012 Ω
Stability ±0.01 pH/3h
Temp compensation (0 ~ 100)°C (auto or manual)
Measuring range -1999.9mV ~ 0 ~ 1999.9mV
Resolution 1mV
Accuracy ±0.1% FS
Measuring range (0 ~ 20.00) mg/L(ppm)  (0 ~ 200.0)%
Resolution 0.1/0.01 mg/L(ppm) 1/0.1%
Accuracy Electrode: ±0.10 mg/L, Instrument: ±0.40 mg/L
Response time ≤30 s (25°C, 90% response)
Residual current ≤0.1 mg/L
Temp compensation range (0 ~ 100)°C (automatic)
Salinity compensation range (0 ~ 45) ppt (automatic)
Air pressure compensation (80 ~ 105) kPa (automatic)
Automatic calibration Air saturated by water, water saturated by air
Electrode type Polarographic
Measuring range -10°C~ 110°C
Resolution 0.1°C
Accuracy 5~ 60°C: ±0.4°C Others: ±0.8°C
Other Parameters
Data storage 1000 groups
Storage contents Measurement series number, measuring value, temperature, ATC or MTC state, measuring date and time
Power DC12V/1A
Communication connectors Wireless Bluetooth, USB
Dimensions & Weight 240 × 170 × 70mm/600g
Working Conditions
Ambient temperature 5 ~ 35 °C
Ambient humidity ≤85%
IP rating IP54
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