M12CFM-RTD

Supported Applications

The Omega M12CFM series consists of field mountable cable assemblies designed for Resistance Sensors (RTDs). These cables facilitate connections between RTD sensors and instrumentation, supporting configurations with straight or right-angled M12 connectors. The series is engineered to accommodate special requirements where standard fixed-length cables are insufficient.

Operating Conditions & Performance

The cable assemblies utilize 4-wire construction that is field re-wireable. Two primary insulation and jacketing materials define the operating envelope:

• PFA insulated and jacketed (T24SSPC): Features 24 AWG stranded silver plated copper conductors.
• PVC insulated and jacketed (P24STPC): Features 24 AWG stranded tin plated copper conductors.

The series is manufactured in the USA. Specific temperature ratings, pressure limits, or environmental certifications beyond the material composition are not provided in the source documentation for this series overview.

Cable Wiring Configuration

Wiring follows a defined color code mapped to M12 connector pin numbers and alternative termination types:

• M12 Pin 1 (Brown): Maps to TA3/TA4 mini DIN Pin 1, or Positive (+) for MTP/OTP.
• M12 Pin 2 (White): Maps to TA3/TA4 mini DIN Pin 2, or Negative (-) for MTP/OTP.
• M12 Pin 3 (Blue): Maps to TA3/TA4 mini DIN Pin 3, or Ground (G) for MTP/OTP.
• M12 Pin 4 (Black): Not connected on TA3; maps to TA4/mini DIN Pin 4; not connected on MTP/OTP.

Configuration Options

The series supports a wide range of configurable options for sensor attachment, instrument termination, cable length, and protective over-braiding. The model number structure is M12CFM----.

Front End Connector Options (Sensor Attachment)

The sensor end of the cable can be configured with M12 connectors featuring strain relief:

• SFSR: M12 straight socket connector.
• RFSR: M12 right angled socket connector.
• SMSR: M12 straight plug connector.
• RMSR: M12 right angled plug connector.

Back End Connector Options (Instrument Attachment)

The instrument end supports various miniature and audio-style connectors, or flying leads for custom termination:

• Flying Leads (FL): 150 mm (6") minimum length.
• MTP/OTP Series: MTPM/MTPF (3-pin miniature plug/socket) and OTPM/OTPF (3-pin plug/socket).
• Audio Connectors: TA3FM/TA3FF (3-pin audio plug/socket) and TA4FM/TA4FF (4-pin audio plug/socket).
• DIN Connector: MINIDIN (4-pin mini DIN plug connector).

Cable Options & Protective Add-ons

The series offers two cable constructions and optional protective layers added to the model number suffix:

• T24SSPC: 24 AWG stranded SPC, PFA insulated and jacketed.
• P24STPC: 24 AWG stranded TPC, PVC insulated and jacketed.
• Sbraid (SB): Optional stainless steel over-braid added to the cable callout for additional cost.
• BX Hose: BX hose options available by adding 'BX' to the end of the cable callout for additional cost.

Key Product Differences

Variants within the M12CFM-RTD series differ primarily in connector orientation (straight vs. right angled), termination type, and insulation material. The choice between PFA-insulated cables (T24SSPC) and PVC-insulated cables (P24STPC) dictates conductor plating (silver plated copper versus tin plated copper). Lengths are specified in meters within the model number.

Connector additions to flying leads incur different pricing structures: MTP and OTP connectors carry no additional charge, while TA3M/TA3F, TA4M/TA4F, MINIDIN, and all M12 connector variants (SFSR, RFSR, SMSR, RMSR) are available for an additional cost.