Universal Display Controller With Dual 4-20mA Input Output and PID Control Functions

The BC7687 is a versatile intelligent display and control instrument designed to enhance measurement systems across multiple industries by adding display, control, alarm, and sensor auto-cleaning functions to any type of transmitter. Featuring a multi-line graphical display and comprehensive control capabilities, this instrument supports a wide range of applications from aquaculture and water treatment to chemical processing and environmental monitoring.

• Universal Compatibility: Works with any 0-20mA or 4-20mA transmitter for measurement display enhancement

• Advanced Display: Multi-line graphical display with -9999 to 9999 range and customizable decimal positioning

• Dual Power Supply: Standard 85-264VAC or optional 9-36VDC/24VAC power supply

• Integrated Control Functions: Automatic measurement control and sensor auto-cleaning capability

• Flexible Alarm System: Programmable high/low setpoints with adjustable hysteresis and delay timers

• Dual Analog Outputs: Programmable 0-20mA or 4-20mA outputs for recording or PID control

• Differential Measurement: Capability to measure difference between two transmitters with identical ranges

• Security Protection: Two-level parameter access with user-defined security codes

• Robust Construction: Metal housing with IP65 front panel protection for industrial environments

The BC7687 serves multiple industries including:

• Aquaculture: Water quality monitoring and control

• Drinking Water: Treatment process monitoring and control

• Biochemical & Pharmaceutical: Process parameter display and regulation

• Food & Beverage: Production process monitoring

• Pulp & Paper: Process control and quality monitoring

• Chemical Industry: Reaction control and safety monitoring

• Electroplating: Bath concentration and temperature control

• Printing: Ink viscosity and color density monitoring

• Textile: Dyeing process control

• Irrigation: Water quality and flow control

• Groundwater: Quality monitoring systems

• Environmental Monitoring: Pollution control and data acquisition

• Swimming Pools: Water chemistry control

• Security Systems: Monitoring and alarm functions

• Water Treatment: Process control and optimization

• Surface Treatment: Coating thickness and quality control

• Converts any transmitter signal to clear numerical display

• Customizable units and decimal point positioning

• Multi-line graphical representation of measurements

• Automatic measurement control algorithms

• PID control capability through analog outputs

• Manual override options for process adjustment

• Two programmable setpoints with high/low functionality

• Adjustable hysteresis to prevent alarm chattering

• Programmable delay timers for alarm activation

• External contact-activated hold/alarm functions

• Single or differential input configurations

• Scaling from -9999 to 9999 with selectable decimal

• Dual isolated analog outputs for recording or control

• Automatic sensor cleaning control capability

• Manual cleaning initiation through control interface

• Maintenance scheduling and monitoring

• User Interface: Intuitive programming through front panel controls

• Access Security: Two-level password protection for parameter changes

• Customization: Fully programmable display units, scaling, and alarm parameters

• Preset Configurations: Industry-specific parameter sets for common applications

• Panel Mount: Standard 90×90 mm panel cutout

• Wiring: Screw terminal connections for easy installation

• Compatibility: Works with any standard 0-20mA or 4-20mA transmitter

• Integration: Easily integrates into existing control systems and SCADA networks

• Alternative Power: 091.427 option provides 9-36VDC or 24VAC power supply

• Custom Scaling: Application-specific scaling and unit configurations

• Communication Options: Additional communication modules (available upon request)

• Industrial grade construction for harsh environments

• IP65 front panel protection against dust and water ingress

• CE compliance for European market applications

• Suitable for use in safety-critical applications with proper implementation

The BC7687 Intelligent Display & Control Instrument provides a comprehensive solution for enhancing measurement systems with advanced display, control, and alarm functions, making it an ideal choice for diverse industrial applications requiring reliable monitoring and control capabilities.