Products Description
The E+H Cerabar PMC21 is a compact, cost-effective absolute and gauge pressure transmitter utilizing ceramic capacitive measurement technology, specifically designed for applications in water treatment, HVAC (Heating, Ventilation, and Air Conditioning), and general industrial processes. While ensuring reliable measurement performance, this product offers an ideal solution for routine pressure measurement needs with its ingenious design and economical pricing.
Core Technical Features
|
Feature |
Detailed Description |
|
Ceramic Capacitive Sensor |
• High-performance ceramic measuring diaphragm with good chemical stability and corrosion resistance • Oil-free design avoids temperature effects on fill fluid, ensuring long-term stability |
|
Compact Integrated Design |
• Small footprint, low installation space requirements • Integrated process connection and electronics minimize potential leak points |
|
High Accuracy & Stability |
• Measurement accuracy up to ±0.5% (standard) • Good temperature compensation performance adapts to environmental changes |
|
Multiple Pressure Types |
• Available in Absolute (a) and Gauge (g) measurement versions • Gauge version includes atmospheric pressure compensation |
|
Easy Operation |
• Basic parameter setup via local push buttons • Clear status indicators |
|
Environmental Adaptability |
• Protection rating IP67, dustproof and waterproof • Wide operating temperature range: -40℃ to +85℃ |
|
Output & Communication |
• 4～20mA HART standard output • Compatible with mainstream control systems |
|
Multiple Certifications |
• CE, RoHS and other international certifications • Compliant with industry application standards |
Technical Specifications
|
Parameter Category |
Technical Specifications |
|
Measuring Range |
Gauge: -1...0 bar to 0...400 bar Absolute: 0...1 bar to 0...400 bar |
|
Accuracy Class |
±0.5% (standard) Optional ±0.25% high-accuracy version |
|
Long-term Stability |
≤±0.5%/year |
|
Operating Temperature |
-40℃ to +85℃ (ambient) -40℃ to +100℃ (process) |
|
Supply Voltage |
10.5 to 45V DC (2-wire) |
|
Output Signal |
4～20mA HART |
|
Process Connection |
G1/2, 1/2" NPT, M20×1.5 |
|
Protection Rating |
IP67 |
|
Response Time |
<10ms (adjustable) |
|
Overpressure Capability |
Up to 4 times the measuring range |
Industry Application Advantages
1. Excellent Cost Performance
· Competitive pricing within the same performance class
· Low maintenance requirements reduce operating costs
· Easy installation saves construction time
2. Wide Applicability
· Absolute and gauge versions cover most application scenarios
· Wide temperature range design adapts to different climate conditions
· Multiple process interfaces meet various installation needs
3. Reliable Measurement Performance
· Ceramic sensor ensures long-term stability
· Good interference resistance
· Consistent measurement accuracy
4. Easy Integration & Maintenance
· Standard signal output compatible with existing systems
· Modular design simplifies maintenance
· Intuitive operator interface
Suitable Application Scenarios
Water Treatment & Supply Systems
· Municipal Water Plants: Pump station discharge pressure monitoring
· Wastewater Treatment: Aeration tank pressure, sludge pump pressure
· Pipeline Monitoring: Water distribution network pressure control
· Secondary Water Supply: High-rise building water supply system pressure assurance
HVAC Systems
· Air Conditioning Systems: Chiller pressure, chilled water pressure
· Ventilation Systems: Fan static pressure measurement
· Clean Rooms: Pressure differential control (with DP transmitter)
· Building Automation: System-integrated pressure monitoring
General Industrial Processes
· Compressed Air: Compressor outlet pressure, network pressure
· Hydraulic Systems: Hydraulic power unit pressure monitoring
· Pneumatic Equipment: Working air pressure monitoring
· Process Control: Small reactor pressure
Machinery Equipment
· Construction Machinery: Hydraulic system pressure
· Injection Molding Machines: Injection pressure, clamping force
· Packaging Machinery: Pneumatic system pressure
· Testing Equipment: Pressure testing systems
Energy Management
· Boiler Auxiliaries: Feedwater pressure, steam pressure
· Heating Networks: District heating system pressure
· Solar Energy: Solar thermal system pressure
· Pump Station Monitoring: Pump inlet/outlet pressure
Installation & Configuration
Installation Guidelines
1. Location Selection: Avoid positions with strong vibration and rapid temperature changes
2. Mounting Orientation: Process connection facing downward to prevent condensate accumulation
3. Electrical Connection: Use shielded cables with proper grounding
4. Process Connection: Ensure proper sealing using appropriate tools
Parameter Setup
· Local Setup: Set range, units via device buttons
· HART Setup: Advanced parameter configuration using handheld communicator
· Factory Settings: Standard configuration provided for most applications
Maintenance Recommendations
· Routine Checks: Visual inspection, signal verification
· Regular Calibration: Annual zero-point calibration recommended
· Cleaning: Keep device clean, check seals
· Troubleshooting: Utilize HART diagnostic functions
Selection Guide
Selection Key Points
1. Pressure Type: Choose absolute or gauge based on requirements
2. Measuring Range: Select range covering 1.5-2 times working pressure
3. Process Connection: Match on-site pipeline interface standards
4. Environmental Requirements: Consider temperature, protection rating
5. Output Requirements: Confirm control system interface type
Model Configuration
· PMC21-A: Absolute pressure version
· PMC21-G: Gauge pressure version
· Optional accuracy classes
· Optional process connection types
· Optional electrical interface forms
Core Keywords
1. Compact Pressure Transmitter
2. Ceramic Capacitive Pressure Sensor
3. E+H Cerabar PMC21
4. Absolute/Gauge Pressure Transmitter
5. Water Treatment Pressure Measurement
6. HVAC Pressure Sensor
7. Industrial Process Pressure Monitoring
8. Economical Pressure Transmitter
9. HART Communication Pressure Instrument
10. General Industrial Pressure Measurement
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