Online PH/ ORP Controller With Two Relays Control Dosing For Water Treatment Plant
pH controllers are commonly used to monitor and adjust the pH of liquids. A pH analyzer usually includes a pH sensor that measures the pH of the liquid and sends it to the controller. The controller connects to your control system and can perform actions based on the measured pH value.
A relay is an electronic switch that controls the flow of electrical current based on the conditions of an input signal. Relays in pH controllers are often used to control the addition or discharge of acid-base liquids. When the pH exceeds or falls below a set range, the relay can trigger a pump that adds alkali or acid to adjust the pH of the liquid.
pH controllers require calibration to ensure accurate pH measurement and proper control operation. Calibration usually requires the use of standard buffers, such as pH 4 and pH 7 buffers. The APX2-C1 pH controller manufactured by Daruifuno supports changing the calibration points as needed to ensure the pH controller is operating within the correct range.
Specification:
| Model | APX2-C1 | APX2-C1Z |
| Principle | PH | Glass pH electrode (hydrogen ion concentration index) |
| ORP | Platinum or gold electrodes (redox potential) |
| Display Range | PH | 0~14pH |
| ORP | ± 2000mV |
| Temp | -10～150℃ |
| Resolution | PH: 0.01pH ORP: 1mV TEMP: 0.1℃ |
| Accuracy | 0.1% of the measuring range or ±0.02pH / ±2mV, take the larger one |
| Stability | 0.05% of measuring range every 24 hours without accumulation |
| Repeatability | Better than 0.1% of measuring range |
| Temp Compensation | Automatic or manual (NTC10K/PT1000) |
| Relay Output | Two SPST relays, Max. load 3A/250VAC, set high/low alarm, temp or clean control |
| Digital Communication | —— | A two-wire RS485 interface, Modbus RTU |
| Current Output | A 0/4~20mA current Max. load 1000Ω |
| Language | English |
| Display | 128*64 3.2-inch graphic dot matrix LCD |
| Calibration Method | PH: 3 points , ORP: 2 points , calibration points can be set freely |
| Protection Grade | IP66 |
| Enclosure Material | Enhanced ABS |
| Power Supply | AC: 100~240V 50/60Hz or DC: 18~36V |
| Dimension | 144*144*120mm (Hole size 138*138mm) |
| Electrical Interface | Reserve three M12*1.5 glan heads, the wire diameter is 3~6.5mm |
| Work Temperature | 0～60℃, RH<95%, non-condensing |
| Storage Temperature | -20～70℃, RH<55%, non-condensing |
| Installation | Wall mounting, pipe clamp, panel |
| Weight | 750g |
| Power Consumption | Max. 3W |
Brief introduction:
- 3.2 inch LCD screen
- Time and historical data can be recorded
- Temperature compensation function
- 6 Password can be set
- 144*144*120mm dimension
- English interface
- Calibration points are adjust freely
The use environment includes but not limited to the following:
Laboratory environment:
pH and ORP sensors are commonly used in laboratories for chemical analysis, biological experiments and research applications. These environments are often tightly controlled to ensure high precision and accuracy.
Industrial production:
Chemical plants, pharmaceutical plants, food processing plants, and other industrial sites use pH and ORP sensors to monitor and control production processes. This helps ensure product quality, increase production efficiency and avoid unnecessary waste.
Environmental monitoring:
pH and ORP sensors are widely used in the field of environmental monitoring to detect and monitor the properties of water, soil, wastewater and pollutants. This helps protect the natural environment and human health.
Water treatment:
Drinking water treatment plants and wastewater treatment plants use pH and ORP sensors to monitor and regulate the pH and redox properties of water to ensure water quality is up to standard.
Pool and Spa:
pH sensors are used to monitor the pH level of swimming pool and spa water to maintain clean and safe water.
Agriculture:
The field of agriculture uses pH sensors to monitor the pH of the soil to determine the most suitable soil conditions for growing different crops.
Food and drinks:
The food and beverage processing industry uses pH sensors to monitor and regulate the pH of food products to ensure product safety and taste.
Aquarium:
pH and ORP sensors are used to monitor the quality of water in fish tanks, aquariums and aquarium exhibits to ensure the health of fish and aquatic life.
It should be noted that different applications may have different requirements for sensor accuracy, durability and environmental conditions. Therefore, when choosing pH and ORP sensors, you must consider the characteristics of the use environment and choose a suitable sensor model to ensure accurate and reliable measurement.
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