CML Optical Arc Detectors provide optical detection of arcs within waveguides or RF cavities. They are sensitive to a wide range of optical wavelengths in the visible and near infrared spectral region. They are normally supplied installed on an E-Plane or H-Plane waveguide bend as pictured here.
ARC SENSORS
CML Arc Sensors are equipped with a small, below-cutoff aperture for the viewing of regions where an arc may occur. An optional reverse power input is available. This input allows triggering on reflected power from the output of a diode detector installed on a reverse power monitoring directional coupler.
The circuit assembly used on CML Arc Sensors can be supplied for mounting on a viewport for vacuum waveguide applications. They can also be supplied on a mounting plate for field replacement.
CML's circuit assembly has the following specifications:
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Optical Detector:
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Phototransistor.
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Power Supply Voltage:
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13 to 31 VDC.
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Input Current:
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80 mA DC (with test light actuated).
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Output Signal:
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Armed: 16 V minimum.
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Fired: 2 V maximum.
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Response Time:
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1 microsecond, maximum.
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Connectors:
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Power and Control: Burndy BT07A-10-6P.
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Reflected Power: SMA female.
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Note: Specifications as shown above are for nominal 28 VDC operation.