The shock pulse transducers with TMU (the 42 000 series) are used in permanent SPM installations for bearing monitoring, in cases where the cable length between the transducer and measuring unit exceeds 4 m. The transducer with TMU (= Transducer Matching Unit) is installed in countersunk mounting holes on the bearing housings, in the same way as the 40 000 transducer. A shock pulse transducer with TMU converts the shock pulses emitted by the bearing into an electric signal and stabilizes the signal for transmission via a long cable. A coaxial cable connects the transducer with a measuring terminal or measuring unit. The maximum cable length is 100 m.

Transducer housing and base are made of stainless, acid-proof steel, suitable for aggressive environments. The thread size is M8, with UNC 5/16" as an alternative. The transducer is usually connected with a TNC plug. A TNC angle plug can be used in narrow spaces. To prevent cable corrosion in moist environments, the coaxial cable must be connected with a sealing TNC plug.