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4" 100mm Electric Contact Pressure Gauge | Dual Limit Control for Automation
Precision Pressure Control for Automation
Our 4-inch (100mm) Electric Contact Pressure Gauge is an advanced electronic pressure gauge designed for automated industrial control systems. Featuring upper limit, lower limit, and live pressure pointers with an easy-to-use adjustment knob, this transmission pressure gauge enables precise monitoring and automatic switching of pumps, compressors, and fluid tanks. Rated for 380V 10VA with a clear four-wire system—yellow common, green lower limit, red upper limit, and black ground—it delivers reliable performance for demanding automation applications.
Key Features & Benefits
Dual Limit Control: Independent upper and lower limit pointers allow precise setting of pressure thresholds for automated system control, making this electronic pressure gauge ideal for maintaining pressure within desired ranges.
Easy Field Adjustment: The convenient adjustment knob enables quick and accurate setting of control points without special tools or gauge disassembly.
Clear Four-Wire System: Simple, standardized wiring—yellow common, green lower limit, red upper limit, black ground—ensures straightforward installation and troubleshooting.
Heavy-Duty Switching: Rated for 380V 10VA, this transmission pressure gauge can directly control motor contactors, solenoid valves, and alarm systems.
Combined Visual & Electronic Monitoring: Provides both local analog reading and electrical control signals in a single instrument.
Technical Specifications
Specification
Detail
Dial Size
4 inches / 100 mm
Gauge Type
Electric Contact Pressure Gauge
Pointers
Upper Limit, Lower Limit, Live Pressure
Adjustment
Front Knob (External)
Electrical Rating
380V 10VA
Wiring System
Four-Wire: Yellow (Common), Green (Lower), Red (Upper), Black (Ground)
Contact Function
SPDT or Independent Circuits
Pressure Range
Customizable (Specify at order)
Wiring & Installation Guide
This transmission pressure gauge features an intuitive wiring scheme:
Wire Color
Function
Connection Point
Yellow
Common Wire
Power source common / controller input
Green
Lower Limit Contact
Lower limit control circuit (pump start, low alarm)
Red
Upper Limit Contact
Upper limit control circuit (pump stop, high alarm)
Black
Ground Wire
Earth ground for safety
How It Works: Automated Pressure Control
1. Set Control Points: Use the adjustment knob to position the upper limit and lower limit pointers at desired pressure thresholds. 2. Monitor Live Pressure: The live pressure pointer moves with system pressure, indicating current conditions. 3. Automatic Switching: When pressure reaches the lower limit, the green wire circuit closes (e.g., starting a pump). When pressure reaches the upper limit, the red wire circuit closes (e.g., stopping the pump). 4. Visual Verification: The dial provides continuous visual confirmation of system status.
Typical Automation Applications
Water Pump Control: Maintain tank pressure between preset minimum and maximum levels
Air Compressor Systems: Automate compressor cycling based on receiver pressure
Industrial Fluid Tanks: Control filling and discharge operations
Hydraulic Systems: Maintain pressure within safe operating ranges
Process Control: Trigger alarms or shutoffs at critical pressure limits
Need Help with Automated Pressure Control?
Pressure control challenges? Whether you're designing a new system or troubleshooting an existing one, our engineering team provides expert support for electronic pressure gauge selection, wiring, and integration.
For technical assistance and automation solutions:
Oingdao DaZeFengYang MeterWelding lnstruments Co, Ltd. is one professional pressure gauge and hardware tools
manufacturer, who is also one member of China National Hardware Association.
Together with our highly skiled technical experts, we have put an effort to meet the quality of pressure gauge as ... Oingdao DaZeFengYang MeterWelding lnstruments Co, Ltd. is one professional pressure gauge and hardware tools
manufacturer, who is also one member of China National Hardware Association.
Together with our highly skiled technical experts, we have put an effort to meet the quality of pressure gauge as ...
