Gefran ME1-6-M-B35D-1-4-D Melt Pressure Transmitter 350 Bar

Product Overview

The Gefran ME1-6-M-B35D-1-4-D 2130X000X00, ordering code F007725, is a mercury-filled melt pressure transmitter calibrated from 0 to 350 bar. It converts melt pressure into an amplified two-wire 4–20 mA signal for extrusion controllers, PLC analog inputs and process monitoring systems. This configuration uses a 1/2-20 UNF process connection, a six-inch rigid stem and an eighteen-inch flexible section, allowing the electronic housing to be positioned away from the hottest part of the process.

Main Features

• 0 to 350 bar calibrated pressure range.
• Two-wire 4–20 mA output with 10–30 VDC supply.
• Mercury-filled hydraulic pressure transmission system.
• 0.5% FSO accuracy class identified by code M.
• Six-pin connector with IP65 protection when correctly mated.
• Internally generated 80% full-scale calibration signal.
• Magnetic autozero function for adjustment at zero process pressure.

Technical Specifications

Compatible System and Applications

This model is suitable for melt pressure monitoring at extruder barrels, screen changers, adapters and dies when the control system accepts a 4–20 mA signal. The input must be scaled so that 4 mA represents zero pressure and 20 mA represents 350 bar. Existing alarm and shutdown values should be recorded before replacement because a controller configured for 5,000 psi is not exactly equivalent to a 350 bar calibration.

Maintenance and Replacement Notes

Autozero must only be performed with no pressure applied. Inspect the mounting bore and remove hardened polymer without damaging the diaphragm seat. Gefran specifies a maximum installation torque of 56 Nm for the standard connection. Protect the flexible section from sharp bending, crushing and contact with moving equipment. Confirm loop polarity and connector pin assignments before applying power.

Related Models

ME1-6-M-P05M-1-4-D F007742 is calibrated in psi from 0 to 5,000 psi, which is close to but not identical to 350 bar. ME1-6-M-B05C-1-4-D F007704 increases the range to 500 bar. ME2-6-M-B35D configurations add a type J thermocouple and require additional temperature wiring. ME1-6-H-B35D-1-4-D F007671 uses the higher H accuracy class. Related models are provided for family reference only and are not automatically interchangeable.

Inquiry and Supply Notes

Please specify F007725 and provide the complete nameplate when requesting this transmitter. Confirm the 350 bar range, 4–20 mA output, 10–30 VDC supply, six-pin connector, process thread, stem dimensions and component condition before ordering.