Cameron AAP3798102-00130

Technical & Performance Parameters

• Effective Measuring Stroke: 0 mm ~ 150 mm linear travel (00130 long stroke specification)
• Output Signal Standard: 4 mA corresponds to 0% stroke (valve fully closed), 20 mA corresponds to 100% stroke (valve fully open)
• Measurement Linear Accuracy: ±0.1% full stroke measuring range
• Repeatability Error: ±0.05% full stroke length
• Loop Operating Supply Voltage: 12 V DC minimum to 30 V DC maximum two-wire power supply
• Subsea External Hydrostatic Pressure Rating: 10,000 psi continuous seawater pressure resistance
• Surface Platform Ambient Pressure Operation Range: 0 psi to 200 psi non-submerged service
• Full Operating Temperature Band: -40 °C ~ +85 °C
• Storage Temperature Range: -50 °C ~ +90 °C
• Ingress Protection Rating: IP68 permanent deepwater immersion sealing
• Circuit Galvanic Isolation Withstand Voltage: 1000 V AC between magnetic sensing assembly and signal output circuit
• Vibration Compliance Standard: IEC 60068-2-6 offshore marine heavy vibration certification
• Standard Assembly Physical Dimensions: Transmitter housing outer diameter 42 mm, overall assembly length 325 mm, standard M30×2 mounting external thread
• Net Assembly Weight: 2.08 kg
• Formal Industry Certifications: ATEX, IECEx, ABS marine equipment certification, API 6D, SIL 2 functional safety certification

Material Composition

1. Outer high-pressure containment housing: UNS S32750 super duplex stainless steel, full factory passivation anti-chloride corrosion processing
2. Internal moving sensing plunger: Solid titanium alloy magnetic core, non-contact friction-free magnetic induction design
3. Signal processing circuit board: High-temperature resistant FR4 multi-layer PCB coated with marine anti-mold, anti-salt fog three-proof paint
4. Primary and secondary pressure sealing rings: Dual fluorosilicone compound O-rings, chemically compatible with seawater, hydraulic control oil, and crude oil derivatives
5. Cable penetration gland assembly: Hastelloy C276 nickel alloy explosion-proof marine cable locking connector
6. Internal signal acquisition element: Wide-temperature stabilized industrial hall effect magnetic sensor chip
7. Actuator mounting threaded sleeve: Hardened 316L stainless steel with factory-applied high-temperature anti-seize dry coating

Structural Characteristics

1. Elongated monoblock super duplex pressure vessel housing optimized for 150 mm long linear measuring stroke, maintaining uniform wall thickness for consistent high-pressure containment
2. Contactless hall effect magnetic sensing architecture with zero mechanical friction between moving plunger and fixed internal sensor, eliminating cyclic wear failures on long-stroke valve actuators
3. Dual redundant fluorosilicone sealing barriers installed at cable gland entry and plunger sliding penetration points to prevent seawater infiltration under deep subsea pressure cycling
4. Universal M30×2 external male thread for standardized threaded installation into Cameron large-bore valve actuator cylinder end caps across all subsea and surface wellhead product lines
5. Two-wire integrated loop power circuit design; single dual-core shielded marine cable provides both operating power and bidirectional position feedback signal transmission
6. Segmented internal layout separating the long-stroke magnetic plunger cavity and sealed electronic circuit compartment to isolate mechanical motion from sensitive signal hardware
7. Pre-integrated lightning surge suppression circuit embedded inside the sealed housing to mitigate offshore thunderstorm induced high voltage surges on signal umbilicals

Working Principle

1. Full-range linear travel of Cameron large-bore gate/ball valve hydraulic actuator drives the internal titanium magnetic plunger to perform synchronous 0–150 mm linear displacement within the transmitter pressure housing
2. Fixed internal hall effect sensor continuously captures magnetic field strength proportional to the plunger’s real-time physical position along the long measuring stroke
3. On-board signal conditioning hardware filters marine electromagnetic interference noise, linearizes raw magnetic measurement data, and converts displacement values into standardized 4–20 mA analog current signals
4. Two-core shielded subsea umbilical cable transmits 12–30 V DC loop power to the transmitter and carries position feedback analog signals back to surface platform DCS or subsea SCM control hardware
5. Internal electrical isolation barrier fully separates subsea submerged sensing hardware from surface-side control circuits, eliminating cross-medium seawater ground loop interference
6. Built-in surge protection components clamp transient high voltage surges generated by offshore lightning strikes to protect fragile PCB signal circuits from burnout
7. Continuous self-diagnosis logic monitors magnetic sensor signal loss and cable open-circuit faults; outputs fixed <2 mA fault signal to trigger upper system valve position ESD alarm upon abnormal detection

Core Function Features

1. Non-contact magnetic sensing architecture with unlimited mechanical cycle life, eliminating routine maintenance lubrication for long-stroke offshore valves
2. IP68 full deepwater sealing paired with 10,000 psi hydrostatic pressure rating for permanent subsea tree and manifold installation
3. ±0.1% FS ultra-linear measurement accuracy enabling precise closed-loop position control of large-bore production isolation valves
4. Two-wire loop power architecture minimizes subsea umbilical cable count, reducing deepwater laying and installation capital expenditure
5. SIL 2 functional safety certification compliant with oil & gas industry safety instrument system standards for emergency shutdown critical loops
6. UNS S32750 super duplex stainless steel housing delivers superior resistance to seawater chloride pitting and crude oil chemical corrosion compared to standard 316L stainless steel sensors
7. Wide -40°C ~ +85°C operating temperature band adapts to Arctic offshore cold service and tropical equatorial high-temperature shallow water production platforms
8. API 6D and ATEX/IECEx explosion-proof certifications allow deployment in classified surface hazardous wellhead zones and subsea explosive hazard zones

Advantage Highlights

1. Authentic Cameron OEM matching spare part, direct threaded replacement for all Cameron long-travel large-bore subsea and surface wellhead actuators without mechanical structural modification
2. UNS S32750 super duplex alloy construction eliminates premature offshore corrosion failures common to standard stainless steel displacement transmitters
3. 150 mm extended measuring stroke (00130 dedicated variant) exclusively engineered for full-travel large gate and ball valve actuator assemblies requiring complete stroke position monitoring
4. Contactless magnetic sensing removes recurring subsea maintenance operations, critical for remote deepwater assets inaccessible to regular human servicing
5. Factory-integrated surge protection removes requirement for external lightning arrestor hardware on offshore signal umbilical cables
6. SIL 2 safety rating permits integration into critical wellhead emergency shutdown safety instrument loops
7. Standardized M30×2 threaded mounting interface supports remote ROV operated replacement during subsea asset maintenance campaigns

Applicable Industries

Installation Requirements

1. Thread the M30×2 mounting sleeve fully into the Cameron actuator cylinder end cap; tighten to calibrated 85 N·m installation torque using marine-grade torque wrench
2. Apply factory-specified nickel-based anti-seize compound uniformly to all stainless steel threaded surfaces prior to installation to prevent saltwater thread seizure during long-term offshore service
3. Route marine dual-core shielded signal cable through the Hastelloy explosion-proof cable gland; evenly compress gland ferrule to achieve full IP68 waterproof cable locking seal
4. Verify complete mechanical coupling between the transmitter titanium plunger and actuator internal pushrod; eliminate all axial free play between moving mechanical components
5. Separate position feedback signal cables from high-voltage hydraulic power cables with a minimum 50 cm physical gap to avoid analog signal distortion from electromagnetic coupling
6. For all subsea deployments, execute a 12-hour external hydrostatic pressure test at 12,000 psi post-installation to validate IP68 sealing integrity before lowering the assembly to seabed
7. Complete full-stroke calibration of the 4 mA (0 mm fully closed) and 20 mA (150 mm fully open) signal endpoints via surface DCS system before valve commissioning and production startup

Usage Precautions

1. Forbid unauthorized disassembly of the monoblock super duplex high-pressure housing; disassembly destroys factory-calibrated IP68 sealing and pressure containment structure, invalidating subsea safety certification
2. Prevent mechanical over-travel impact exceeding the rated 150 mm maximum measuring stroke; plunger hard collision permanently damages internal hall effect magnetic sensing chip
3. Do not deploy unshielded general industrial wire for signal transmission; unshielded cabling generates severe marine electromagnetic signal drift and inaccurate valve position feedback
4. Avoid direct crude oil or organic chemical solvent spray exposure on the Hastelloy cable gland connector without protective mechanical covers; chemical degradation accelerates fluorosilicone sealing ring aging and water ingress risk
5. Conduct annual offshore visual inspection of cable gland sealing integrity and housing passivation coating to identify early salt fog corrosion pitting defects
6. If feedback signal remains locked below 2 mA, first perform cable inspection for subsea water ingress open-circuit faults before transmitter disassembly and replacement
7. Pre-installation long-term storage must utilize desiccant-sealed moisture-proof packaging; avoid prolonged exposure to coastal salt fog atmospheric environments without protective storage housing