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Specifications
PH:
Measuring range: (-2.00 ~ 19.99) pH
Resolution: 0.1/0.01 pH
Accuracy: ±0.02 pH
Input current: ≤2×10^-12 A
Input impedance: ≥1×10^12 Ω
Stability: ±0.01 pH/3h
Temperature compensation: (0 ~ 100)℃ (automatic)
mV:
Measuring range: -1999mV ~ 0 ~ 1999mV
Resolution: 1 mV
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: ±0.40 mg/L, ±0.3%
Response time: ≤30s (25℃, 90% response)
Residual current: ≤0.1 mg/L
Temperature compensation: (0 ~ 100)℃ (automatic)
Salinity compensation: (0 ~ 45) ppt (automatic)
Pressure compensation: (66 ~ 200) kPa (manual)
Automatic calibration: Air saturated by water, water saturated by air
Electrode type: Polarographic
Others:
Data storage: 200 groups
Storage contents: Series number, measuring value, measuring unit and temperature
Power: Two AA batteries(1.5V×2)
Size & Weight: 60×90×30mm/360g (instrument)
480×300×60mm/1KG (with packing)
Working Conditions:
Ambient temperature:(5 ~ 35)℃
Ambient humidity: ≤85%
IP grade: IP57
Standard Configuration:
1. P-521 pH/DO meter: 1 unit
2. pH electrode: 1 pc
3. DO electrode: 1 pc
4. Temperature electrode: 1 pc
5. pH buffer (pH4.00, pH6.86, pH9.18/50ml): 1 set
6. Membrane cap: 3 pcs
7. DO electrolyte (30ml in powder): 1 bottle
8. Backup AA battery: 2 pcs
9. Operation manual: 1 copy
