Two 0/4~20mA RS485 Interface PH Controller For Water Treatment Monitoring
This set of digital PH/ORP analyzer is developed and produced based on digital requirements. It is divided into two basic models: potentiometric PH glass electrode and platinum ORP electrode.
Specification:
| Model | DUC2-PH-H-A |
| Software Version | DRFN PH Analysis software V1.0 |
| Sensor Input | Compatible with all DRFN's PH Digital Sensors |
| Display Range | PH | -2~+16pH |
| ORP | ±3000mV |
| TEMP | -10～500℃ /14~932℉ |
| Resolution | PH | 0.01pH |
| ORP | 1mV |
| TEMP | 0.1℃/ 0.1℉ |
| Relay Control | 2 settable SPST relays, max. Load 3A/250VAC |
| Analog Current | 2 settable 0/4~20mA current outputs, max. Load 1000 ohms |
| Communication Method | Two-wire RS485 interface; MODBUS RTU; JSON text data format |
| OTA | —— |
| Display Screen | 128*64 black-and-white graphic lattice LCD
adjustable backlight mode
adjustable display rate |
| Configuration Information | Power off protection, parameters are retained indefinitely |
| Time/Data Record | Year/month/day/hour/min/second, record 14000 historical data
record interval can be set between 1~999 minutes |
| Maintenance Records | Last 100 times |
| Protection Level | IP66 |
| Operating Environment | 0～60℃,RH<95% ( no condensation) |
| Storage Environment | -20～70℃,RH<55% ( no condensation, precision instruments) |
| Shell Material | Enhanced ABS |
| Dimension | 144*144*120 mm |
| Mounting Method | Wall mounting, pipe clamping, panel (hole size 138*138 mm) |
| Electrical Interface | The back end reserved 3 M12*1.5 Gram head, line diameter 3~6.5 mm |
| Power Supply | 100～240VAC |
| Power Consumption | About 7W |
| Weight | About 800g |
More details please refer to catalog here:
Daruifuno Catalog.pdf
Brief introduction:
● Compatible with all DRFN digital PH/ORP sensors;
● Automatic temperature compensation;
● The working status of the sensor can be queried, including reading the serial number;
● Support a variety of installation methods;
● Time and historical data recording function;
● 3.2-inch large LCD screen;
● User-friendly Chinese and English language interface;
● Password can be set to prevent misoperation;
● 2 SPST multi-function and settable relays;
● Two 0/4~20mA active current loop outputs;
● RS485 interface, Modbus RTU communication protocol;
● IP66 waterproof level, sealed enclosure can isolate pollution and corrosive gas;
● OTA download technology as a smart configuration option for the instrument.
Aplication:
Water treatment monitoring
Drinking water,surface water,water quality analyze,ground water,ect.
Industrial process monitoring and dosing control
Chemical,petroleum,paper,food and medicine,PCB manufacturing,etc.
FAQ
Q1. Does the instrument have a self-diagnostic function and how does it prompt?
A: The pH meter has self-diagnosis function.When the instrument is in calibration and maintenance,it can diagnose the PH/ORP sensor,if there is improper operation or poor PH/ORP sensor characteristics, the screen makes an image display and advises the user to re-maintain or replace the sensor.
Q2. What are the special advantages of the pH instruments?
A: The instrument can not only compensate the temperature of the test sample by connecting the temperature sensor, but also self-check the working temperature of the instrument in real time. When the working temperature of the instrument changes, the instrument compensates the hardware change caused by the temperature drift. Make the test results more accurate, this is a patented technology.
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