Ex Proof Differential Pressure Sensor in UAE | Differential Sensors
The ATEX Differential Pressure Sensor FKC – FCX-AIV V6 Series provides accurate differential-pressure measurement for gases, liquids, steam, and industrial process media. As a reliable Ex Proof Differential Pressure Sensor in UAE, it supports oil and gas facilities, refineries, petrochemical plants, industrial HVAC systems, filtration units, cleanrooms, boilers, water-treatment plants, and process automation.
The transmitter measures the pressure difference between two process points and converts it into a directly proportional 4–20 mA output signal. Integrated HART 7 communication supports remote configuration, diagnostics, commissioning, and connection to modern PLC and SCADA platforms.
At the centre of the transmitter is a proven micro-capacitive silicon sensing element. Digital signal processing improves accuracy, stability, temperature compensation, and long-term measurement performance. Standard accuracy is approximately ±0.065% of the configured span, while an optional high-accuracy version provides performance up to ±0.04%.
The FKC range supports differential-pressure spans from approximately 1 kPa to 20,000 kPa, depending on the selected sensor module. Available ATEX configurations include intrinsically safe protection and explosion-protected enclosure versions for hazardous-area projects.
Atex Hub supplies ATEX Differential Pressure Sensors across the UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Europe, Africa, and worldwide for hazardous-area flow, level, filtration, density, interface, HVAC, and industrial process applications.
What Is an ATEX FKC Differential Pressure Sensor?
The FKC Differential Pressure Sensor is a smart industrial transmitter that measures the difference between two applied pressures.
It includes a high-pressure port and a low-pressure port. The transmitter calculates differential pressure using the following basic relationship:
Differential Pressure = High-Side Pressure − Low-Side Pressure
For example, when the high-pressure connection receives 1.5 bar and the low-pressure connection receives 1.0 bar, the measured differential pressure is 0.5 bar.
This measurement principle allows one transmitter to support several industrial functions, including:
- Differential-pressure monitoring
- Flow measurement
- Hydrostatic level measurement
- Filter-condition monitoring
- Density measurement
- Interface-level measurement
- Boiler-drum measurement
- Cleanroom pressure monitoring
The FKC converts the measured value into a standard two-wire 4–20 mA signal. The same pair of wires supplies operating power and carries the pressure signal.
A PLC, DCS, controller, indicator, or SCADA system can use the output for:
- Process display
- Alarm generation
- Valve control
- Pump control
- Flow calculation
- Filter-blockage detection
- Tank-level monitoring
- Process shutdown
The transmitter supports HART 7 digital communication, which allows technicians to configure the measuring range, damping, zero point, engineering units, and diagnostic parameters without removing the instrument from service.
Key Features of the Explosion Proof Differential Pressure Sensor
The Explosion Proof Differential Pressure Sensor combines high accuracy, broad rangeability, hazardous-area approvals, durable construction, and smart communication.
- Micro-capacitive silicon sensor: Provides reliable and stable differential-pressure measurement.
- High standard accuracy: Delivers approximately ±0.065% of the configured measuring span.
- Optional enhanced accuracy: Supports accuracy up to approximately ±0.04%.
- Excellent long-term stability: Provides approximately ±0.1% of the maximum span over ten years for applicable sensor codes.
- Wide differential-pressure range: Supports measuring spans from approximately 1 kPa to 20,000 kPa.
- High turndown capability: Allows scale setting down to approximately 1/100 of the maximum span.
- 4–20 mA output: Provides a standard two-wire industrial current signal.
- HART 7 communication: Supports digital configuration, diagnostics, and integration.
- Fast measuring cycle: Provides a measurement cycle of approximately 40 ms.
- Adjustable damping: Configurable from approximately 0.04 to 32 seconds.
- External zero and span adjustment: Allows field calibration without opening the housing.
- Optional local display: Provides pressure values and configuration information at the installation point.
- ATEX approval options: Available with intrinsic-safety and explosion-protected enclosure configurations.
- SIL capability: Supports SIL 2 with HFT=0 and SIL 3 with HFT=1 under suitable safety-system architecture.
- Multiple process materials: Available with 316L stainless steel, Hastelloy C, Monel, tantalum, gold-plated stainless steel, and coated options.
- Aluminium or stainless-steel housing: Supports standard and highly corrosive environments.
- High process-temperature resistance: Standard process configurations operate up to approximately 120°C.
- Harsh-environment durability: Supports extreme temperatures, corrosive conditions, pressure variation, and demanding process installations.
- Multiple electrical entries: Available with M20 × 1.5, ½-14 NPT, and Pg13.5 options.
- Oxygen and chlorine service options: Special preparation is available for compatible projects.
How Does the FKC Differential Pressure Sensor Work?
The FKC uses a micro-capacitive silicon transducer to detect the difference between the high- and low-pressure process connections.
Process pressure enters both sides of the transmitter through separate impulse lines or manifold connections. The two pressures act on opposite sides of the sensing assembly.
When one pressure is higher than the other, the sensing diaphragm moves by a very small amount. The micro-capacitive sensor detects this movement and converts it into an electrical value.
The transmitter electronics then:
- Measure the high-side and low-side pressure difference.
- Apply sensor linearisation.
- Correct temperature-related effects.
- Apply the configured measuring range.
- Add the selected damping.
- Generate a proportional 4–20 mA signal.
- Make measurement and diagnostic data available through HART communication.
The signal can connect to:
- PLC analogue input modules
- Distributed Control Systems
- SCADA platforms
- Flow computers
- Digital pressure indicators
- Safety Instrumented Systems
- Building Management Systems
- Data loggers
- Alarm panels
- Process controllers
The transmitter can use the pressure difference to calculate or monitor several process variables.
For flow measurement, differential pressure develops across an orifice plate, venturi tube, flow nozzle, or other primary flow element. As flow increases, differential pressure also changes. The control system converts this pressure value into a flow rate.
For level measurement, the transmitter compares pressure at the bottom of a vessel with a reference pressure. The measured difference represents the liquid head and therefore the liquid level.
For filtration applications, the transmitter measures pressure before and after a filter. A rising differential pressure indicates increasing contamination or blockage.
Applications of the Hazardous Area Differential Pressure Sensor
The Hazardous Area Differential Pressure Sensor supports measurement and control across energy, process, HVAC, filtration, water-treatment, and manufacturing industries.
- Oil and gas facilities: Measures flow, level, density, filter condition, and process differential pressure.
- Refineries: Supports fuel, gas, steam, liquid-level, flow, and filtration measurement.
- Petrochemical plants: Measures process flow, vessel level, interface level, and filter pressure loss.
- Chemical plants: Monitors compatible liquids, gases, vapours, and process equipment.
- Industrial HVAC systems: Measures duct pressure, fan pressure, filter condition, and room pressurisation.
- Air-handling units: Monitors pressure across filters, coils, fans, and dampers.
- Cleanrooms: Maintains positive or negative room-pressure relationships.
- Boiler systems: Supports steam-flow, feedwater-flow, drum-level, and combustion-air measurement.
- Water-treatment plants: Measures filter condition, water flow, pump performance, and tank level.
- Food-processing plants: Supports hygienic process measurement with suitable seals and materials.
- Pharmaceutical facilities: Monitors cleanroom pressure, filtration systems, and process vessels.
- Power plants: Measures boiler flow, steam flow, cooling-water flow, and process level.
- Filter-monitoring systems: Detects blocked bag filters, cartridge filters, strainers, and process filters.
- Tank-level systems: Measures hydrostatic level in open and pressurised vessels.
- Density measurement: Calculates liquid density from pressure differences at known elevations.
- Interface measurement: Detects the boundary between two liquids with different densities.
The principal published applications include level measurement, flow measurement, density measurement, filtration, and interface measurement.
Technical Specifications of the FKC FCX-AIV V6 Series
| Specification | Product Details |
|---|
| Product Name | ATEX Differential Pressure Sensor FKC – FCX-AIV V6 Series |
| Product Type | Smart differential-pressure transmitter |
| Pressure Measurement | Differential pressure |
| Sensing Technology | Micro-capacitive silicon |
| Output Signal | 4–20 mA |
| Communication Protocol | HART 7 |
| Measuring Spans | 1, 6, 32, 130, 500, 3,000 and 20,000 kPa maximum spans |
| Configurable Example Ranges | 0–60, 0–320, 0–1,300 and 0–5,000 mbar |
| Standard Accuracy | Approximately ±0.065% of configured span |
| Optional Accuracy | Approximately ±0.04% |
| Long-Term Stability | Approximately ±0.1% of maximum span over 10 years for applicable versions |
| Range Setting | Down to approximately 1/100 of maximum span |
| Elevation and Suppression | Approximately −100% to +100% of maximum span |
| Measurement Cycle | Approximately 40 ms |
| Adjustable Damping | Approximately 0.04–32 seconds |
| Supply Voltage | Approximately 10.5–45 VDC |
| Typical Load Resistance | Approximately 250 Ω |
| Process Temperature | Approximately −40°C to +120°C |
| Ambient Temperature | Approximately −40°C to +85°C |
| Process Connections | ¼-inch NPT, ½-inch NPT, flange and configured options |
| Electrical Entries | M20 × 1.5, ½-14 NPT or Pg13.5 |
| Housing Styles | L-shaped or T-shaped |
| Housing Materials | Low-copper aluminium alloy or 316L stainless steel |
| Standard Wetted Material | 316L stainless steel |
| Alternative Wetted Materials | Hastelloy C, Monel, tantalum and coated options |
| Optional Display | Digital indicator |
| Hazardous Approval Options | ATEX intrinsic safety or ATEX explosion-protected enclosure |
| Functional Safety | SIL 2 and SIL 3 capability |
| Approximate Weight | 3.1 kg without indicator |
| Primary Applications | Flow, level, density, filtration and interface measurement |
The official product range lists maximum spans of 1, 6, 32, 130, 500, 3,000 and 20,000 kPa, along with selectable configured ranges and several construction options.
Pressure Ranges, Accuracy and Long-Term Stability
The FKC Series supports both very low differential-pressure measurement and high static-pressure process applications.
Low differential-pressure ranges suit:
- HVAC duct pressure
- Cleanroom monitoring
- Filter-condition measurement
- Low-pressure gas-flow systems
- Air-handling units
- Fan-performance monitoring
Medium differential-pressure ranges suit:
- Industrial liquid flow
- Gas flow
- Boiler air systems
- Pump monitoring
- Vessel-level measurement
- Pressurised tank applications
Higher span versions support demanding process and high static-pressure duties. A specialised high-static-pressure FKC configuration can withstand static pressures up to approximately 1,379 bar or 20,000 psi, depending on the selected model and process design.
The standard transmitter provides approximately ±0.065% accuracy, while the enhanced version reaches approximately ±0.04%. This performance supports custody-related process monitoring, accurate flow measurement, level control, and critical filtration applications.
The transmitter also provides long-term stability of approximately ±0.1% of maximum span over ten years for applicable sensor versions. This reduces drift and helps extend calibration intervals.
Process Materials and Housing Construction
The FKC can be configured with several wetted materials to suit different process fluids and corrosion conditions.
Available materials include:
- 316L stainless steel
- Hastelloy C
- Monel
- Tantalum
- Gold-plated 316L stainless steel
- Monel-coated configurations
- Tantalum-coated configurations
- Gold-plated ceramic options
The standard 316L stainless-steel construction suits many industrial gases, liquids, steam systems, water circuits, compressed air, and compatible chemicals.
Hastelloy, Monel, tantalum, and coated materials support more demanding chemical environments where standard stainless steel may not provide sufficient resistance.
Housing options include:
- Low-copper aluminium alloy with polyester coating
- 316L stainless-steel enclosure
- L-shaped housing
- T-shaped housing
A stainless-steel enclosure suits offshore, marine, chemical, saline, and highly corrosive installations.
The exact material must match the process medium, temperature, concentration, static pressure, cleaning chemicals, and operating cycle.
Flow, Level and Filter Measurement
The FKC provides more than basic differential-pressure monitoring. It can serve as the primary transmitter for several calculated process measurements.
Flow Measurement
An orifice plate or another flow element creates a pressure drop inside the pipe. The FKC measures this differential pressure and sends the value to a flow computer, PLC, or DCS.
Typical flow applications include:
- Natural gas
- Compressed air
- Steam
- Water
- Process liquids
- Cooling water
- Boiler feedwater
Hydrostatic Level Measurement
The transmitter measures the pressure created by the liquid column inside a tank. The system converts this head pressure into a level value.
It can support:
- Open tanks
- Closed tanks
- Pressurised vessels
- Boiler drums
- Storage vessels
- Chemical tanks
Filter Monitoring
The high-pressure side connects upstream of the filter, while the low-pressure side connects downstream.
A clean filter produces a relatively low pressure difference. As contamination builds, resistance increases and the differential pressure rises.
The control system can then:
- Display filter condition
- Trigger a maintenance warning
- Generate a high-differential-pressure alarm
- Shut down equipment
- Start a standby filter
- Record filter-performance trends
HART Communication and System Integration
The FKC supports HART 7 communication over the standard 4–20 mA loop.
HART allows technicians to:
- Configure the measuring range
- Change engineering units
- Set damping time
- Adjust zero and span
- Read diagnostic information
- Identify the transmitter
- Review process values
- Verify device health
- Support preventive maintenance
Configuration methods include:
- External zero and span screw
- Optional three-button local display
- HART handheld communicator
- HART modem
- Compatible FDT/DTM software
The transmitter supports supply voltages from approximately 10.5 to 45 VDC. With a typical 24 VDC supply, it can operate with common industrial control inputs and HART communication resistors.
ATEX Protection and Functional Safety
The FKC FCX-AIV V6 Series is available with different hazardous-area protection options.
Selectable configurations include:
- ATEX intrinsic safety
- ATEX explosion-protected enclosure
- Standard non-hazardous versions
The chosen approval must match:
- Hazardous zone
- Gas or dust classification
- Gas group
- Temperature class
- Equipment Protection Level
- Cable-entry system
- Wiring method
- Ambient temperature
For an intrinsically safe version, the complete measuring loop requires a compatible Ex i barrier or galvanic isolator.
For an explosion-protected enclosure version, the cable gland, conduit, stopping plugs, and enclosure entries must maintain the certified protection concept.
The FCX-AIV range also supports functional-safety applications in accordance with IEC 61508 and IEC 61511. Suitable architectures can achieve:
- SIL 2 with HFT=0
- SIL 3 with HFT=1
Selection, Installation and Maintenance
Correct product selection helps maintain accuracy, process safety, and reliable hazardous-area operation.
- Determine the minimum and maximum differential pressure.
- Identify the maximum static line pressure.
- Confirm whether the application involves flow, level, density, interface, or filter monitoring.
- Choose the smallest practical range that covers normal operation and process surges.
- Select the standard or high-accuracy option.
- Confirm the required turndown ratio.
- Match the wetted material to the process medium.
- Select aluminium or stainless-steel housing according to the environment.
- Confirm the process connection and manifold arrangement.
- Use a three-valve or five-valve manifold where required.
- Install impulse lines with the correct slope and routing.
- Prevent gas pockets in liquid-service impulse lines.
- Prevent liquid pockets in dry-gas impulse lines.
- Use condensate pots for suitable steam applications.
- Keep both impulse lines at similar temperatures where possible.
- Confirm the ATEX protection method before installation.
- Select compatible Ex cable glands or intrinsic-safety barriers.
- Maintain segregation between intrinsically safe and ordinary wiring.
- Confirm the available supply voltage and total loop resistance.
- Use a HART-compatible resistor where digital communication is required.
- Equalise the transmitter before applying full differential pressure.
- Perform zero adjustment after mounting.
- Configure damping according to the process response.
- Test alarms and control functions during commissioning.
- Inspect manifolds, impulse lines, fittings, glands, and seals regularly.
- Check for blockage, condensation, leakage, or trapped gas.
- Calibrate the transmitter according to the plant maintenance schedule.
Certifications, Standards and Compliance
The FKC FCX-AIV V6 Differential Pressure Transmitter supports ATEX hazardous-area and functional-safety configurations.
Why Choose Atex Hub for Ex Proof Differential Pressure Sensors?
Atex Hub supplies Ex Proof Differential Pressure Sensors for hazardous-area flow, level, filtration, HVAC, cleanroom, boiler, and industrial process applications.
- Supplies Ex Proof Differential Pressure Sensors across the UAE, Saudi Arabia, Qatar, Kuwait, Oman, Bahrain, Europe, Africa, and worldwide.
- Provides low-, medium-, and high-differential-pressure ranges.
- Offers standard and high-accuracy transmitter options.
- Supplies 4–20 mA transmitters with HART communication.
- Supports ATEX intrinsic-safety and explosion-protected configurations.
- Offers SIL 2 and SIL 3 capable instruments.
- Provides 316L stainless steel, Hastelloy, Monel, tantalum, and coated wetted materials.
- Supplies aluminium and stainless-steel housing options.
- Provides digital indicators, manifolds, oval flanges, cable glands, and HART accessories.
- Supports PLC, DCS, SCADA, BMS, flow-computer, and safety-system integration.
- Assists with pressure span, static pressure, process material, manifold, and approval selection.
Frequently Asked Questions
1. What is the FKC FCX-AIV V6 Differential Pressure Sensor?
The FKC FCX-AIV V6 is a smart transmitter that measures the difference between two process pressures and provides a 4–20 mA HART output.
2. Is it suitable for hazardous areas in the UAE?
Yes. The Ex Proof Differential Pressure Sensor in UAE is available with ATEX intrinsic-safety and explosion-protected approval options.
3. What is the standard measurement accuracy?
The standard accuracy is approximately ±0.065% of the configured measuring span.
4. Is a higher-accuracy version available?
Yes. An optional version provides accuracy up to approximately ±0.04%.
5. What output signal does it provide?
The transmitter provides a standard two-wire 4–20 mA output with HART 7 communication.
6. Can it monitor industrial filters?
Yes. It measures the pressure loss across bag filters, cartridge filters, strainers, coils, and other filtration equipment.
7. Can it measure liquid level?
Yes. The FKC supports hydrostatic level measurement in open and pressurised vessels.
8. Which wetted materials are available?
Options include 316L stainless steel, Hastelloy C, Monel, tantalum, and coated materials.
9. Does it support safety-instrumented systems?
Yes. Suitable configurations support SIL 2 and SIL 3 system architectures.
10. Can Atex Hub supply transmitter accessories?
Yes. Atex Hub supplies three-way and five-way manifolds, oval flanges, ATEX cable glands, indicators, HART modems, and mounting accessories.
Conclusion
The ATEX Differential Pressure Sensor FKC – FCX-AIV V6 Series provides precise and stable differential-pressure measurement for hazardous industrial processes.
Its micro-capacitive silicon sensor, digital signal processing, ±0.065% standard accuracy, optional ±0.04% accuracy, and approximately ±0.1% ten-year stability support demanding flow, level, density, interface, and filtration applications.
The transmitter provides a standard 4–20 mA output with HART 7 communication, adjustable damping, external calibration, multiple process materials, and aluminium or stainless-steel housing options. ATEX intrinsic-safety and explosion-protected configurations support hazardous-area installations.
For companies seeking an Ex Proof Differential Pressure Sensor in UAE, the FKC Series supports refineries, petrochemical plants, HVAC systems, cleanrooms, boilers, filtration units, water-treatment facilities, and process industries.
Atex Hub supplies ATEX Differential Pressure Sensors across the UAE, GCC countries, Europe, Africa, and worldwide.
