P-521 Portable pH-DO Meter
Suitable for industrial and mining factories, power plant, aquaculture and environmental protection, especially for outdoor purposes.
Main Features
●Large LCD screen with controllable white backlight.
●Humanized designs like rack and skid proof shell make it more convenient for users.
●Built-in microprocessor chip with functions of auto calibration, auto temperature compensation, data storage, function setup, self-diagnosis, auto power off, low voltage display.
●Double-parameter and equipped with pH electrode and DO electrode, can recognize electrode automatically.
●Auto recognition of standard pH buffers and there are three series of standard buffers for option: USA, NIST and China.
●Able to set pH measurement modes of high purity water and pure water with ammonia.
●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 and equipped with special DO electrode calibration sleeve, only need 3~5 minutes for polarization.
●IP57 and equipped with optional carrying case.
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 : ≥1×1012 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 : 160×90×30mm/360g (instrument)
480×300×60mm/1KG (with packing)
Working Conditions : Ambient temperature : (5 ~ 35)℃
Ambient humidity : ≤85%
IP grade : IP57