| I believe Princeton was founded by Todd at GRT. You might try calling GRT to see if that leads anywhere.
What are the frequency specs on the EI unit vs. the VMS unit? On Nov 28, 2013, at 1:28 PM, Mark Quinn wrote:
Recently had to replace a VMS fuel probe (4-foot) with a EI unit. There is a Princeton Electronics Interface Module to convert down to 1-5 volt range needed for the guage but it appears to be dead. The lights will not come on to do the calibration. In checking the identical unit on the other wing which works fine, it's lights do not come on either. Power was checked to both units and was OK. Without the lights, following the standard calibration instructions are impossible. Has anybody had a similar experience? Tried to contact Princeton Electronics but it is now own by the ANDREA MANN co in south africa. There website has problem so tech support is not available.
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