Upgrade your existing Model 120 Etchant Control/Monitor System to the new Model 140 for $1340. The upgrade kit consists of:
Installation requires simply removing the old encoder circuit and encoder card and installing the new ones. Disconnect the Mod. 120 Monitor and replace it with the Mod. 136 Process Monitor. All electrical connections to the Mod. 120 Power Module and all plumbing connections to the Mod. 120 Control remain unchanged.