P-521 Portable pH/DO Meter
2018-7-16
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 there is 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 |
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
