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Specifications
pH
Measuring range: (-1.99 ~ 19.99) pH
Resolution: 0.1/0.01 pH
Accuracy: ±0.02 pH
Input current: ≤1×10^-12 A
Input impedance: ≥1×10^12 Ω
Stability: ±0.01pH/3h
Temp Compensation range: (0 ~ 100)℃ (auto or manual)
mV
Measuring range(mV/ORP/EH): -1999.9mV ~ 0 ~ 1999.9mV
Resolution: 1mV
Accuracy: ±0.1% FS
DO
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℃, 90% response）
Residual current: ≤0.1 mg/L
Temp compensation range: (0 ~ 100)℃ (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
Temperature
Measuring range: -10℃~ 110℃
Resolution: 0.1℃
Accuracy: 5~ 60℃: ±0.4℃ Others: ±0.8℃
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 ℃
Ambient humidity: ≤85%
IP grade: IP54
Standard configuration
1. T721 pH/DO meter: 1 unit
2. Composite pH electrode: 1 pc
3. DO electrode: 1 pc
4. Rotary electrode holder: 1 pc
5. pH buffer (pH4.00, pH6.86, pH9.18/50ml）: 1 set
6. 12V power adapter: 1 pc
7. DO membrane cap: 3 pcs
8. DO electrode electrolyte (30ml): 1 bottle
9. Instruction manual in USB: 1 copy
