Isolated measurement probe

Measurements in high-voltage environments often pose the problem of bringing the equipment close to the measurement point and at a high floating potential, with all the safety aspects that this entails. This issue can be easily solved by using an optically isolated measurement probe. The optical fiber ensures total galvanic isolation between the measurement point and the operator.

Montena MOL25T and MOL500T fiber-optic link sets transmit analog signals from DC to 25 MHz or 500 MHz respectively. These compact transmitter and receiver modules are ideally suited for real-time measurement of all types of signals, including fast transients on high-voltage busses.

The shielded, battery-powered remote module converts the measured electric signal into an optical signal and send it to the optical receiver module through a standard single mode fibre. The optical receiver converts back the optical signal into electric signal.

The highly shielded modules ensure clean measurements, even in the presence of strong electromagnetic disturbances.

The fibre optic cable (up to 1km long) provides a safe galvanic isolation between the measurement point, the measurement equipment and the operator.

The 50 ohm / 1 megohm input of the optical transmitter can interface with almost all kind of voltage or current probes.

The MOL25T and the MOL500T are available with BNC or SMA connectors, and have switchable 1:1, 10:1, 100:1 attenuation ratios.

Montena proposes in addition a full range of measurement equipment and software applications especially designed for the measurement of electromagnetic pulses.

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