PC-6850 Industrial PH ORP Controller China Factory Suppliers

Looking for reliable China suppliers? Our factory provides the PC-6850 Industrial PH ORP controller, a double channel system for precise water quality monitoring in wastewater treatment, chemical, and pharmaceutical industries. Supports 4-20mA and Modbus RS485.

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Product Details

The PC-6850 is a professional-grade, double-channel PH/ORP Controller engineered for high-precision water quality monitoring. Designed specifically for industrial water pollution prevention and environmental monitoring, this robust instrument provides simultaneous measurement and control of PH and Oxidation-Reduction Potential (ORP), ensuring your water treatment processes remain within strict regulatory and operational limits.

Featuring a high-resolution 128 64 dot matrix LCD and flexible output options, including Modbus RS485 and dual 4-20mA signals, the PC-6850 integrates seamlessly into automated PLC systems. Whether deployed in wastewater treatment plants or chemical processing facilities, its advanced temperature compensation and three-point calibration system guarantee unmatched accuracy and long-term stability in demanding environments.

Detailed Parameters

Measurement Range	PH: 0.00～14.00 pH \| ORP: -1200～＋1200 mV	Measurement Accuracy	PH: ±0.1 pH \| ORP: ±2mV
Temp. Compensation	0–100 ℃ (Manual/Auto: NTC 10k, PT100, PT1000)	Operating Temp.	0～60℃ (Normal) / 0～100℃ (High Temp Sensor)
Sensor Compatibility	Two/Three Composite PH sensor, ORP sensor	Calibration	Three Point Calibration (4.00, 6.86, 9.18)
Output Signal	Double 4-20mA Isolated (Max resistance 750Ω)	Control Signal	High/Low Limit Alarm Contact (3A/250V AC, NO)
Communication	Modbus RS485 (Baud: 2400, 4800, 9600)	Power Supply	AC220V±10% (Std), AC110V, DC24V, 12VDC (Opt)

Key Advantages

High Precision

Delivers professional accuracy with ±0.1 pH and ±2mV ORP readings for critical process control.

Thermal Stability

Automatic temperature compensation up to 100°C ensures consistent data across temperature fluctuations.

Dual Channel Control

Simultaneous monitoring of PH and ORP allows for comprehensive water quality management in one unit.

Clear Visualization

Equipped with a 12864 dot matrix LCD for intuitive real-time data display and easy navigation.

Flexible Integration

Supports RS485 Modbus and isolated 4-20mA outputs for seamless PLC and SCADA integration.

Industrial Design

Panel-mounted (92x92mm hole) design built for rugged industrial environments and easy installation.

Product Gallery

Management Platforms

Automated Dosing

Link the control relay to dosing pumps for automatic PH adjustment based on set limits.

Remote Monitoring

Utilize RS485 Modbus communication to track water quality from a central control room.

Threshold Alarms

Configure high and low limit alarms to prevent chemical overflows or water acidification.

PLC Integration

Standard 4-20mA outputs allow for seamless connection to any industrial PLC system.

Precise Calibration

Three-point calibration powder ensures the sensor remains accurate over long operation periods.

Power Versatility

Optional power supplies (DC24V/12V) allow for flexible installation in various power grids.

Investment Return Comparison

Feature	Standard Controllers	PC-6850 System
Measurement Channels	Single Parameter	Dual (PH & ORP)
Calibration Method	Two-point / Manual	Professional Three-point
Connectivity	Analog Only	RS485 Modbus + Analog
Temp. Compensation	Basic/Fixed	Dynamic (NTC/PT100/PT1000)
Operational Life	Frequent Recalibration	High Stability / Long Lifecycle

Frequently Asked Questions

Q: How does the PC-6850 handle temperature variations in water?

The PC-6850 features advanced temperature compensation (0–100 ℃) supporting NTC 10k, PT100, and PT1000 RTD sensors to ensure PH and ORP readings remain accurate regardless of water temperature changes.

Q: Can this controller be integrated into a central SCADA system?

Yes, it is fully compatible with SCADA and PLC systems via its Modbus RS485 communication interface (baud rates 2400, 4800, 9600) and dual isolated 4-20mA signal outputs.

Q: What is included in the PC-6850 full set?

The full set includes one PH/ORP controller, one PH and ORP sensor, an operation manual, a qualified certificate, a pair of controller fixed clamps, and a set of three calibration powder bags.

Q: How often should the three-point calibration be performed?

Calibration frequency depends on the water quality and sensor fouling; however, using the provided 4.00, 6.86, and 9.18 powders monthly is recommended for industrial water pollution monitoring to maintain ±0.1 pH accuracy.

Q: Is the 4-20mA output signal isolated?

Yes, the PC-6850 provides isolated and reversible transferable double 4-20mA signal outputs with a maximum circle resistance of 750Ω, preventing electrical interference in industrial settings.

Q: What installation dimensions are required for the panel mount?

The overall dimensions are 96×96×130mm, and the required hole dimensions for panel embedding are 92×92mm.

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