Readings are off the Charts

The movie version Egon using the cartoon version of the P.K.E. Meter that was actually more advanced (in some ways) than the film version. The cartoon version of the P.K.E. Meter can be seen in the video game down in the basement, but you can't use it and instead of the color of it being blue, it’s black.

During the public library mission in Ghostbusters: The Video Game, when they’re chasing the Gray Lady, Egon says
"These readings are off the charts. Now I'll have to make new charts."
I wonder if that's where this P.K.E. Meter will come in?