FDA-Compatible Oil-Filled Construction

The Gefran W31-6-M-P10M-1-4-D 2130X000X00 is a W3-series melt pressure transducer identified by ordering number F021516. It uses an FDA-compatible diathermic oil as the internal hydraulic pressure-transmission fluid and provides a 3.33 mV/V output over a 0–10,000 psi range.

The W3 construction is relevant where a mercury-filled sensing system is unsuitable for the machine, application or regional requirements. Selection must still consider process temperature because the W3 oil-filled family has different thermal limits from mercury-filled and NaK-filled alternatives.

Technical Specifications

Application Selection

Verify the maximum continuous and transient process temperatures before choosing the W31. The oil-filled design should not be selected merely because its mechanical dimensions resemble an M31. Higher-temperature processes may require a different Gefran filling technology and diaphragm configuration.

Mechanical Installation

Inspect the 1/2-20 UNF mounting hole and remove process residue using an approved cleaning procedure. Confirm the six-inch insertion geometry and route the 18-inch capillary without tight bends. The flexible section must not be clamped, twisted or repeatedly flexed during machine operation.

Signal Integration

The low-level mV/V signal requires strain-gauge excitation and a compatible input. Verify six-pin connector wiring, excitation voltage, signal polarity, shielding and calibration resistance. A standard analogue current input cannot receive the transducer signal directly.

Related Models

W31-6-M-P05M-1-4-D 2130X000X00 F021515 provides a 5000 psi range. M31-6-M-P10M-1-4-D F008653 shares the nominal range and basic geometry but uses mercury filling. K31 models use NaK and support a different high-temperature application range.

Related models are provided for family reference only and are not automatically interchangeable.

Maintenance and Replacement Notes

Confirm F021516, pressure range, fluid technology, stem, capillary and complete suffix. Check for diaphragm damage, capillary deformation and connector contamination. Oil-filled, mercury-filled and NaK-filled sensors should not be substituted solely on thread and pressure range.

Inquiry and Supply Notes

Provide the original nameplate, process temperature, polymer type and controller details. Suggested internal-link anchor text is “Gefran W3 FDA Oil-Filled Melt Pressure Transducers." Product condition, calibration and availability must be confirmed separately.