This vacuum gauge controller reads vacuum perfectly but one of the relays was hanging up.
The controller has been sitting in a cabinet for a while but I believe it was the crossover relay that was giving me trouble.
Edwards Active Digital Controller, ADC Enhanced MKII, D39591500 (Relay Issue)
$350.0
Brand
Edwards
Type
Vacuum
MPN
D39591500
Country/Region of Manufacture
United Kingdom
condition
Used
Edwards Active Digital Pressure Controller ADC Enhanced MKII Version D39591500