Online sludge concentration meter

technical indicators
1. Range: (0-100) mg/L, (0-500) mg/L, (0-1000) mg/L, (0-4000) mg/L, (0-20000) mg/L; Different sensors are equipped for different ranges. Please indicate the measurement range when placing an order;
2. Resolution: 0.01mg/L;
3. Accuracy: less than 5% of the reading (depending on sludge homogeneity);
4. Current isolation output: 4-20 mA (load<750 Ω);
5. Output current error: ≤± 1% FS;
6. Alarm relay: AC220V, 7A;
7. RS485 communication interface (optional);
8. Power supply: AC220V ± 22V, 50Hz ± 1Hz; optional DC24 ± 2.4V, 1A power supply;
9. Protection level: IP65;
10. Clock accuracy: ± 1 minute/month;
11. Data storage capacity: 1 month (1 hour/5 minutes);

12. Continuous power-off data retention time: 10 years;
13. Dimensions: 159 (length) x 159 (width) x 138 (depth) mm; Hole size: 138 x 138 mm;
14. Weight: 0.8kg;
15. Working conditions: ambient temperature from 0 to 60 degrees Celsius℃Relative humidity<85%;
16. Installation methods for secondary meters: perforated/wall mounted/rack mounted/pipe mounted.
17. Sensor installation method: flow-through or submerged; Please indicate when placing an order, do not specify to use a submerged configuration.

Main Features
Chinese LCD display, Chinese menu style, Chinese note taking.
Microcomputer based: using high-performance CPU chips, high-precision AD conversion technology, and SMT surface mount technology, automatic range conversion, instrument self checking, high accuracy, and good repeatability.
High reliability: Single board structure, touch sensitive buttons, no switch knob or potentiometer.
Strong resistance and unaffected by sunlight.
Waterproof and dustproof design: protection level IP65, suitable for outdoor use.
Electromagnetic compatibility (EMC/RFI) design: Designed and manufactured according to European standard EN50081/50082.
Alarm function: Alarm signal isolation output, alarm upper and lower limits can be set arbitrarily, alarm hysteresis cancellation.
Network function: isolated current output and RS485 communication interface; The upper and lower limits of the output corresponding to the concentration value of the current can be set arbitrarily.
Historical curve: Continuously record data for one month, with one point every five minutes.
Notepad function: Record 200 pieces of information.
Manual current source: convenient for recording and testing devices.
Built in real-time clock: provides time benchmarks for various functions, etc.
Industrial control watchdog: ensures that the instrument does not crash.
Password management: Both parameter settings and maintenance are password protected.