online PH detector
measuring principle:
PH The sensor is a composite electrode composed of a glass indicator electrode and a reference electrode. The measurement of pH is based on the measurement of the potential difference of the working battery composed of the measuring electrode and the reference electrode, using the linear relationship between the pH value of the solution to be tested and the potential size of the working battery.
functional characteristics:
Have good repeatability and stability;
Clean and reactivation is simple, and the balance speed is fast;
Automatic temperature compensation function;
Optional analog-to-digital conversion module to realize digital signal output, strong anti-interference ability, long transmission distance;
Optional analog-to-digital conversion module to realize the standard digital signal output (RS485), which can be realized without a controller and other available integration and networking;
Sensor site installation is convenient and fast, to achieve plug and play;
Simple use, reliable results, interface operation instructions can reduce operation errors;
Set up a visual alarm system to provide important alarm functions;
The controller can achieve wall mounting / panel mounting / clip mounting.
Typical applications:
Online monitoring of pH in the inlet and outlet of sewage treatment plant, sedimentation tank and biochemical reaction tank of sewage treatment plant;
PH monitoring of municipal water supply industry, surface water, aquaculture and other industries;
PH online monitoring of water use and wastewater treatment processes in various industrial production processes.
| Sensor technical parameters： | |
| measuring range | pH:0-14ph;temperature:0-80℃ |
| measurement accuracy | pH:±0.1ph;temperature:±0.5℃ |
| pressure limit | ≤0.6Npa |
| Zero potential pH | 7±0，25pH(15mv) |
| slope | ≥95% |
| internal resistance | ≤250MΩ |
| alkaline error | 0.2pH(1nol/L Na+ pH14)(25℃) |
| response time | ≤10s（95% of final value reached)(after stirring) |
| Sensor main materials | Black polypropylene，Ag/Agcl Reference gel |
| medium temperature | neurogen temperature |
| size | Diameter 28.7mm* Length 195mm |
| weight | 0.2KG |
| level of protection | IP68/NEMA6P |
| cable length | Standard cable length: 10m, extendable |
Controller parameters
| Model | MDS-KP500 |
| Display | 4.3 inches, 480*800 resolution, 262K color, IPS screen, wide viewing Angle, with backlight |
| Capacitive touch screen with three protection processes (moisture-proof, mildew proof, salt spray proof) | |
| Display size | 95.0mm*53.9mm |
| Measuring range | -99999.0000~99999.0000 |
| Password Protection | The default password is 0000 |
| Compatible sensor | Digital sensor |
| Mounting method | Disk mounting (with chassis), wall-mounted mounting |
| Alarm relay | 2 relays can set high and low alarm |
| Current output | 2 isolated 4-20mA, maximum load 750Q, can be set |
| Communication port | RS485 Modbus RTU |
| Memory backup | All user Settings are stored indefinitely in EERPOM |
| historical data | The storage capacity of 8000 points is recorded at a 5-minute interval |
| Operating environment | -10~+50℃,0~95% relative humidity, no condensation |
| Storage environment | -20 to +70 ° C,0 to 95% relative humidity, non-condensing |
| The power supply | 12V±10% |
| Power consumption of the instrument | less than 6W |
| Instrument size | 144X145X85(mm) |
| Protection class | IP65 |
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