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GENERAL FUNCTION VJK AC-Indicators
The VJK indicators consist of a red/white disc, mounted on an axle in a housing. On top of the housing, just above the disc, there is a transparent plastic lens that makes the disc appear clearly.
When the indicator is exposed for an AC magnetic field that is strong enough, the disc can not remain motionless, and it starts to rotate in either direction. The rotation of the disc indicates an AC magnetic field in the point where the indicator is placed or held.
Apart from just indicating an AC magnetic field, the VJK indicators also can be used as rotation testers for certain circulation pumps. The two basic functions mentioned are described in the instruction slip that is delivered with a Key-ring indicator (referring to the tab “VJK Indicators”). Below, this instruction |
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Key ring indicator |
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Indicator for permanent installation |
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Indicator for permanent installation |
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AC-Indicator Patented
The tool indicates magnetic fields from AC sources, e.g. solenoids valves, transformers etc.
How to use: Place the tool close to the AC device. |
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The red-white disc will rotate when the device is active. |
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Rotation tester Patented
The tool indicates magnetic fields and rotation for certain circulation pumps.
How to use: Place the tool at the motor centre. |
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For most circulation pumps, the red-white disc will rotate in the same direction as the pump when the motor is running. |
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Reimersholmsgatan 23 SE-117 40 Stockholm, Sweden Phone: +46 8 669 96 30 Fax: +46 8 669 96 21 Email: ove.hallberg@geonordic.se |