MP Series: High-Performance Melt Pressure Transducers
Maximum compatibility meets Swiss-grade reliability. The MP Series is engineered as a high-quality, 1:1 drop-in replacement for industry-leading models like the Gefran M Series and Dynisco PT Series. Whether you require a rigid stem or a flexible capillary conduit, the MP Series provides precise pressure monitoring up to 400°C for demanding plastic processing environments.
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1:1 Interchangeable: Identical process connections (1/2″-20UNF, M14, M18) and electrical pinouts.
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Versatile Configuration: Available as Rigid Stem, Flexible Conduit, or Dual Pressure & Temperature versions.
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Signal Flexibility: Supports mV/V (unfiltered), 4-20mA, 0-5V, and 0-10V amplified outputs.
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Extreme Durability: Specialized Inconel 718 diaphragm for superior abrasion and corrosion resistance.
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Seamless Calibration: Integrated 80% internal shunt calibration for immediate setup.
Description
Precision for Modern Extrusion Lines
In plastic processing, Melt Pressure is the primary indicator of process stability and final product quality. Even minor pressure fluctuations can result in inconsistent wall thickness, surface defects, or compromised structural integrity. The MP Series is designed to mitigate these risks by converting physical pressure into a noise-free, stable electrical signal with an accuracy of up to ±0.25% FS.
By utilizing high-grade, heat-treated stainless steel (15-5PH / 17-4PH) and a high-strength Inconel 718 diaphragm, our sensors are shielded against the extreme mechanical stress and thermal loads found in modern extruders. This robust construction does not only guarantee precise data—it significantly extends service intervals, reducing the Total Cost of Ownership (TCO) for your equipment.
Optimized for MRO & Maintenance Efficiency
For Maintenance, Repair, and Operations (MRO) managers, a sensor failure is more than a technical glitch—it is a costly production halt. Every hour of downtime can result in thousands of dollars in lost revenue. Because the MP Series melt pressure transducers mirror global industrial standards for mounting threads (such as 1/2″-20UNF) and electrical pinouts (6-pin Bendix), Longvista provides a high-efficiency “drop-in” solution.
You can replace failing sensors from legacy brands like Gefran or Dynisco without the need for mechanical modifications to the extruder barrel or complex recalibration of your PLC logic. Longvista combines the technical expertise of a specialized boutique with a superior price-performance ratio and rapid availability, ensuring your production line returns to full capacity as quickly as possible.
Features
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Inconel 718 Diaphragm: Standard on all models for superior resistance against abrasive materials and chemical corrosion.
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Flexible Capillary Protection: The “Flexible” option features a stainless steel armored conduit to isolate electronics from high machine temperatures.
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80% Shunt Calibration: Features internal self-calibration, allowing the operator to verify the sensor’s accuracy and the PLC’s scaling instantly.
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Wide Pressure Range: Reliable performance from 0-100 bar up to 0-2000 bar.
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Zero & Span Adjustment: On-board potentiometers for easy field-tuning of the output signal.
Specification
| Feature | Specification |
| Pressure Ranges | 0~100 bar to 0~2000 bar (up to 200 MPa) |
| Accuracy | ±0.25% FS / ±0.5% FS |
| Max. Diaphragm Temp | 400°C |
| Operating Temp (Electronics) | -20°C to +85°C |
| Output Signals | 1.5mV/V, 2.0mV/V, 3.33mV/V, 4-20mA, 0-10V, 0-5V |
| Excitation / Input | 10VDC (for mV) / 24VDC (for amplified signals) |
| Process Connections | 1/2″-20UNF, M14×1.5, M18×1.5, M22×1.5 |
| Electrical Connection | 6-pin or 8-pin Bendix connector |
| Protection Grade | IP65 |
Compatibility Guide
Use this table to find the MP Series equivalent for your current sensor:
| Manufacturer | Competitor Series | MP Series Equivalent |
| Gefran | M0, M1, M2, M3 (e.g., M31, M32) | MP Series (Rigid/Flexible/Dual) |
| Dynisco | PT420, PT460, PT462, TPT463 | MP Series (Standard/Dual) |
| Terwin | Series 2000, 2000 Plus | MP Series |
| Gneuss | DA, DAI, DTA, DAI-T | MP Series |
| Barco | Series 400 | MP Series |
| Industrial Sensors (ISI) | Model 92, Model 93, Model 98 | MP Series |
FAQ
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Is the MP Series compatible with Gefran or Dynisco? Yes. The MP series is designed with the same mechanical threads and electrical pinouts, making it a “Plug & Play” replacement for Gefran M and Dynisco PT series.
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What is the advantage of the Flexible tube over the Rigid stem? The flexible tube (conduit) allows the sensor electronics to be mounted further away from the hot extruder barrel, extending the life of the sensor and allowing installation in cramped spaces.
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Can I measure temperature with this sensor? Yes, our “Dual” version includes a built-in thermocouple (Type J or K) or RTD (PT100) to measure pressure and temperature through a single mounting hole.
Downloads
MP Series Melt Pressure Transducers – Datasheet
