Foxboro C0136HZ M40G Pneumatic Relay Replacement Kit

Foxboro C0136HZ Pneumatic Relay Replacement Kit

The Foxboro C0136HZ, also cataloged as the C0136HZ Relay Replacement Kit, operates as a dedicated hardware component for mechanical-pneumatic signal execution and switching state restoration within Foxboro M40G series pneumatic controllers and process control platforms.

Suffix Breakdown & Model Matrix

Hardware Specifications

Process Control Instrumentation Features

Pneumatic relay mechanisms in Foxboro instrumentation rely on direct force-balance or motion-balance principles. The Foxboro C0136HZ provides cold junction compensation (CJC) reference alignment across adjacent temperature transmitter linkages while maintaining galvanic isolation between physical pressure signals and associated process loops. Its physical valve seat tolerances eliminate hysteresis during rapid 3-15 psi or 20-100 kPa pneumatic signal transitions. Channel-to-channel isolation within the mechanical assembly prevents crosstalk across dual-output pneumatic control loops, ensuring linear instrument response under continuous industrial process cycling.

Frequently Asked Questions

Q: Does the C0136HZ replacement relay kit require external electrical power during calibration?

A: No, the C0136HZ operates strictly as a passive mechanical-pneumatic sub-assembly that processes instrument-grade supply air without electrical connections.

Q: How does installation of the C0136HZ affect existing M40G controller calibration?

A: Installing the replacement kit alters the mechanical pivot alignment slightly; therefore, technicians must perform zero and span adjustments on the M40G controller immediately following installation.

Field Installation Guidelines

Mounting the Foxboro C0136HZ requires isolation of the instrument supply pressure before disassembling the instrument manifold. Technicians should verify that the supply air filter-regulator provides clean, oil-free air dried to a dew point at least 10 deg C below ambient temperature.