Differentiating Hirschmann, GX12 Aviation, and Cable Oil-Filled Silicon Core Pressure Transmitters
Opinion | Apr. 1st, 2025
Joshua Matthew Williams
Pressure Product Line Manager
Oil-filled silicon core pressure transmitters are critical components in industries requiring precise pressure measurement under extreme conditions. Three prominent variants—Hirschmann, GX12 Aviation, and Cable-Type transmitters—leverage similar core technology but differ in design, application, and environmental adaptability. Below is a breakdown of their unique features and use cases.
1. Hirschmann Oil-Filled Silicon Core Pressure Transmitters
Design & Structure:
Hirschmann transmitters are built for industrial durability, featuring stainless steel housings with threaded process connections (e.g., G1/4″ or NPT) and integrated electrical interfaces. The oil-filled silicon core ensures minimal hysteresis and long-term stability, while the hermetically sealed design (IP67+) protects against dust and water ingress.
Key Features:
Wide temperature range: Operates from -40°C to +125°C, suitable for harsh industrial environments.
Output flexibility: Supports 4-20mA, 0-10V, or digital protocols like HART for seamless integration into control systems.
Media compatibility: Resists corrosion from aggressive fluids, including hydraulic oils and chemicals.
Applications:
Industrial automation: Monitoring hydraulic/pneumatic systems in manufacturing and heavy machinery.
Energy sector: Pressure control in oil and gas pipelines or wastewater treatment plants.
Why Choose Hirschmann?
Its standardized connectors and rugged construction make it ideal for industries prioritizing reliability and ease of maintenance.
2. GX12 Aviation Oil-Filled Silicon Core Pressure Transmitters
Design & Structure:
Engineered for aerospace and defense, GX12 transmitters use lightweight aluminum or titanium housings paired with MIL-SPEC GX12 circular connectors. The silicon core is optimized for rapid dynamic response (up to 5 kHz) and vibration resistance.
Key Features:
Extreme environment resilience: Functions at -55°C to +150°C and withstands 50g shock loads.
EMI/RFI shielding: Complies with aerospace standards like DO-160 for electromagnetic interference resistance.
High-frequency accuracy: Captures rapid pressure fluctuations in flight systems.
Applications:
Aerospace: Monitoring cabin pressure, fuel systems, and landing gear hydraulics.
Defense: Missile guidance systems and UAVs requiring mission-critical reliability.
Why Choose GX12 Aviation?
Its MIL-grade connectors and aerospace certifications ensure performance in high-stress, high-vibration environments where failure is not an option.
3. Cable Oil-Filled Silicon Core Pressure Transmitters
Design & Structure:
These transmitters eliminate traditional connectors by integrating a flexible, oil-resistant cable (PUR/FEP sheathing) directly into the sensor body. The design minimizes failure points and supports custom cable lengths for remote installations.
Key Features:
Submersible capability: Rated IP68/IP69K for underwater or high-humidity applications.
Compact and flexible: Ideal for tight spaces or installations requiring direct immersion.
Media isolation: Optional flush diaphragms handle viscous or particle-laden fluids.
Applications:
Marine/offshore: Monitoring ballast tanks and subsea equipment.
Food processing: Hygienic pressure sensing in CIP/SIP processes with FDA-compliant materials.
Why Choose Cable-Type?
The cable-integrated design excels in environments demanding waterproofing, flexibility, or resistance to mechanical stress, reducing long-term maintenance costs.
Key Differentiators
Connector Types: Hirschmann uses industrial threaded connections, GX12 employs MIL-SPEC aviation connectors, and cable-types rely on integrated wiring for versatility.
Environmental Focus: Hirschmann suits general industrial settings, GX12 thrives in aerospace extremes, and cable-types dominate submersible or space-constrained applications.
Industry Alignment: Manufacturing/energy sectors favor Hirschmann, aviation/defense rely on GX12, while marine and food industries prefer cable-type solutions.
Final Insights
Selecting the right transmitter hinges on environmental demands and performance thresholds. Hirschmann models deliver industrial-grade robustness, GX12 Aviation meets aerospace rigor, and cable-types prioritize adaptability in challenging installations. By aligning these strengths with operational needs, users ensure optimal accuracy, durability, and cost efficiency.
Anwoll pressure transmitter
Anwoll is a leading developer of pressure measurement and applications, with a mature series of pressure transmitters suitable for daily and cutting-edge applications.
If you would like to learn more about our pressure transmitters, please contact us directly.
