Description
Overview
The Type 550X Miniature I/P and E/P Transducer is an electronic pressure regulator that converts a variable current or voltage signal into a proportional pneumatic output pressure. Its compact housing, accessible ports, and external zero and span adjustments make it well suited for space-constrained installations and high-density mounting.
An integral volume booster provides the flow capacity needed to improve control speed in critical applications. The Type 550X delivers precision air pressure regulation to actuators, control valves, positioners, dampers, cylinders, and other final control elements.
Multiple electrical connection, mounting, porting, output-range, and hazardous-area options simplify integration into industrial control systems. Standard, high-output, and zero-based versions are available, with pneumatic outputs ranging from 0-30 psig through 3-120 psig.
Key Features
- Converts current or voltage signals to proportional pneumatic pressure
- Available as an I/P or E/P transducer
- Compact design for high-density mounting
- Integral volume booster provides high flow capacity
- External zero and span adjustments
- Input and output ports located on both the front and back
- Conduit, terminal block, DIN 43650, or M12 electrical connections
- Wall, panel, pipe, DIN rail, or manifold mounting
- Compatible with the Type 925 Multifunction Supply Manifold
- Standard, high-output, and zero-based pressure ranges
- Available with 1/4″ NPT or optional 1/4″ BSPP pneumatic porting
- Low air consumption
- NEMA 4X/IP65 enclosure with conduit connection
- FM and CSA hazardous-area approvals for qualifying 4-20 mA models
- Optional ATEX approval
Performance Characteristics
- Input Signals: 4-20 mA, 0-5 VDC, 1-5 VDC, 1-9 VDC, and 0-10 VDC
- Standard Output Ranges: 3-15 psig, 3-27 psig, and 6-30 psig
- High-Output Ranges: 2-60 psig and 3-120 psig
- Zero-Based Output Ranges: 0-30 psig, 0-60 psig, and 0-120 psig
- Maximum Supply Pressure: 150 psig (10 bar)
- Standard-Range Flow Capacity: 12 scfm (339.6 Nl/min) at 100 psig supply
- High-Output Flow Capacity: Up to 20 scfm (566 Nl/min) at 150 psig supply
- Zero-Based Flow Capacity: 12 scfm at 100 psig supply or 20 scfm at 150 psig supply, depending on range
- Standard and High-Output Air Consumption: 1.8 scfh (0.05 m³/hr) at midrange typical
- Zero-Based Air Consumption: 6.0 scfh (0.17 m³/hr) at midrange typical
- Operating Temperature: -40°F to 158°F (-40°C to 70°C)
- Standard-Range Linearity: Less than ±0.5% of span
- High-Output Linearity: Less than ±2.0% of span
- Zero-Based Linearity: Less than ±1.5% of span
- Standard and High-Output Hysteresis and Repeatability: Less than 0.5% of span
- Zero-Based Hysteresis and Repeatability: Less than 1.0% of span
- RFI/EMI Effect: Less than 0.5% of span change in output pressure
- Pneumatic Ports: 1/4″ NPT; optional 1/4″ BSPP
- Electrical Port: 1/2″ NPT for conduit models
- Operating Media: Clean, dry, oil-free instrument air filtered to 40 microns
- Standard Unit Weight: 1.3 lbs (0.60 kg)
- Zero-Based Unit Weight: 1.7 lbs (0.77 kg)
The Type 550X uses a force-balance operating principle. The electrical input moves a coil and flexure assembly toward the nozzle, creating backpressure that acts as the pilot signal to an integral booster relay. This produces an accurate, proportional change in pneumatic output pressure.
How to Select the Right Configuration
Selecting the correct Type 550X configuration depends on the available electrical signal, required pneumatic output, flow demand, mounting method, electrical connection, enclosure, and hazardous-area requirements.
- Select 4-20 mA for standard current-to-pressure control applications.
- Select 0-5 VDC, 1-5 VDC, 1-9 VDC, or 0-10 VDC for voltage-to-pressure applications.
- Choose a standard-range model for 3-15 psig, 3-27 psig, or 6-30 psig output.
- Choose a high-output model for 2-60 psig or 3-120 psig output.
- Choose a zero-based model when the application requires a true 0 psig output.
- Select a conduit connection for NEMA 4X/IP65 enclosure protection.
- Select a terminal block for easy direct wiring in protected installations.
- Select a DIN 43650 connector for a detachable industrial electrical connection.
- Select an M12 connector for compact machine and automation wiring where agency approvals are not required.
- Choose wall, panel, pipe, or DIN rail mounting based on available installation space.
- Use the Type 925 manifold when multiple Type 550X units require a common air supply and individual shutoff valves.
- Select the ATEX option only with a 4-20 mA input.
- Verify that supply pressure is sufficient for the selected output range.
For additional guidance:
Applications
The Type 550X is designed for industrial automation and process-control applications requiring accurate electrical-to-pneumatic pressure conversion in a compact package.
- Pneumatic valve actuators
- Control valves
- Valve positioners
- Damper and louver actuators
- Pneumatic cylinders
- Final control elements
- OEM machine automation
- High-density control panels
- Web tensioning systems
- Packaging and assembly machinery
- Process control systems
- Energy-management and HVAC systems
- Manifold-mounted pneumatic control systems
Explore more applications:
Models & Configurations
Type 550X Ordering Structure
550 – [Input Signal] [Output] [Electrical Connection] [Options]
Input Signals
- A = 4-20 mA
- C = 0-5 VDC
- D = 1-9 VDC
- E = 0-10 VDC
- F = 1-5 VDC
Output Pressure Ranges
- C = 3-15 psig (0.2-1.0 bar)
- D = 3-27 psig (0.2-1.8 bar)
- E = 6-30 psig (0.4-2.0 bar)
- G = 2-60 psig (0.14-4.0 bar)
- H = 3-120 psig (0.2-8.0 bar)
- I = 0-30 psig (0-2.0 bar)
- J = 0-60 psig (0-4.0 bar)
- K = 0-120 psig (0-8.0 bar)
Electrical Connections
- A = 1/2″ NPT conduit with pigtail
- D = DIN 43650 connector
- T = Terminal block
- M = M12 connector; no agency approvals
Available Options
- K = ATEX Approval; 4-20 mA input only
- U = 1/4″ BSPP Pneumatic Porting
Accessories and Mounting Kits
- DIN Rail Mounting Kit: P/N 445-766-024
- Pipe Mounting Kit: P/N 448-542-005
- Type 925 Multifunction Supply Manifold
Technical Resources
FAQs
What does the Type 550X miniature transducer do?
The Type 550X converts a variable current or voltage input signal into a proportional pneumatic output pressure.
What is the difference between an I/P and an E/P transducer?
An I/P transducer converts a current signal, such as 4-20 mA, into pneumatic pressure. An E/P transducer converts a voltage signal, such as 0-10 VDC, into pneumatic pressure.
What input signals are available?
The Type 550X is available with 4-20 mA, 0-5 VDC, 1-5 VDC, 1-9 VDC, and 0-10 VDC input signals.
What output pressure ranges are available?
Available output ranges include 3-15 psig, 3-27 psig, 6-30 psig, 2-60 psig, 3-120 psig, 0-30 psig, 0-60 psig, and 0-120 psig.
What is a zero-based Type 550X?
The zero-based version uses an integral negative-bias booster relay to provide a true 0 psig output while maintaining amplified output capability up to 120 psig.
What is the maximum flow capacity?
The Type 550X provides up to 12 scfm at 100 psig supply or 20 scfm at 150 psig supply, depending on the selected output range.
Can the Type 550X be manifold mounted?
Yes. The Type 550X can be installed on the Type 925 Multifunction Supply Manifold for grouped installations with a common supply and individual shutoff valves.
What electrical connections are available?
Available electrical connections include 1/2″ NPT conduit with pigtail, terminal block, DIN 43650, and M12.
Is the Type 550X approved for hazardous areas?
Qualifying 4-20 mA models are available with FM and CSA approvals, and ATEX approval is available as an option.
What air quality is required?
The Type 550X requires clean, dry, oil-free instrument air filtered to 40 microns.
