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pH
Measuring range: (-2.00 ~ 18.00) pH
Resolution: 0.1/0.01pH
Accuracy: ±0.02pH
Input current: ≤2×10^-12 A
Input impedance: ≥1×10^12 Ω
Stability: ±0.01pH/3h
Temp Compensation range: (0 ~ 100)℃(auto or manual)
mV
Measuring range: -1999.9mV ~ 0 ~ 1999.9mV
Resolution: 1mV
Accuracy: ±0.1% FS
Dissolved Oxygen
Measuring range: (0 ~ 20.00) mg/L(ppm) (0 ~ 200.0)%
Resolution: 0.1/0.01mg/L(ppm) 1/0.1%
Accuracy: ±0.40 mg/L
Response time: ≤30s (25℃, 90% response）
Residual current: ≤0.1mg/L
Temp compensation range: (0 ~ 45)℃ (automatic)
Salinity compensation range: (0 ~ 45) ppt (automatic)
Air pressure compensation: (80 ~ 105) kPa (automatic)
Electrode type: Polarographic
Temperature
Measuring range: 0℃~ 100℃
Resolution: 0.1℃
Accuracy: 5~ 60℃: ±0.4℃ Others: ±0.8℃
Other Parameters
Data storage: 500 groups
Power: DC12V/1A
Communication interfaces: Bluetooth, USB
Dimensions & Weight: 270×170×70mm/600g
Working Conditions
Ambient temperature: 5 ~ 35℃
Ambient humidity: ≤85%
IP grade: IP54
Standard Configuration
1. S-621 pH/DO meter: 1 unit
2. Composite pH electrode: 1 pc
3. Rotary electrode holder: 1 pc
5. pH calibration buffer: 1 set
5. Composite DO Electrode: 1 pc
6. DO electrode cap: 3 pcs
7. DO electrode electrolyte (30mL): 1 bottle
8. 12V power adapter: 1 pc
9. User manual in USB: 1 copy
