Cable Probes

Cable Probes

Cable probes are compact RTD and thermocouple (TC) thermometers built around a flexible, non‑removable cable. The sensing sheath is in direct contact with the process medium, while the cable allows routing and termination where space and access are constrained. They are supplied either without a process connection for simple insertion, or with standard connections such as compression fittings and threads, plus special options such as weld‑on pads or bayonet locks.

Configuration is centered on matching sheath and cable materials to temperature range, mechanical demands, and chemical exposure. Variants support single or dual sensing elements to enable redundancy or paired measurement strategies, and multiple MI and connection-cable material choices address durability and flexibility requirements. Environmental robustness is supported with typical IP66/67 protection classes, and versions are available with approvals for hazardous areas (intrinsically safe or non‑sparking) when required.

The core benefit of cable probes is adaptability without sacrificing measurement integrity. The flexible, bendable construction enables precise positioning of the sensing tip while reducing mechanical stress at the measuring point. Tailorable insertion lengths, process connections, and material selections make it practical to standardize measurement points across diverse equipment types. Cost-efficient construction and straightforward installation support broad deployment for both permanent and temporary measurement needs.

Cable probes are a strong fit where conventional rigid probes and thermowells are difficult to implement. Tight clearances, small pipe diameters, and locations requiring sensor bending around obstructions are typical scenarios. The minimally invasive geometry can reduce installation complexity in compact assemblies, and the flexible cable improves serviceability when termination must be positioned away from heat, vibration, or frequent maintenance activity.

Typical applications include machinery and bearings, HVAC systems, storage temperature monitoring, laboratory equipment, autoclaves, and services with demanding conditions such as high pressure or cryogenic temperatures. They are also used where difficult installation conditions exist - limited space or required sensor bending - and can support surface temperature monitoring of reactors when a flexible sensing approach is preferred.

George E. Booth Co., an exclusive authorized representative of sales and service for Endress+Hauser.