Type 146C Vacuum Gauge Measurement & Control System by MKS Instruments Inc.

The Type 146 Cluster Gauge is a versatile half-rack vacuum gauge measurement and control system which powers and provides simultaneous readout for up to four different vacuum gauges or mass flow controllers. Vacuum gauges supported are: Baratron^® capacitance manometers (four, five, and six decades of measurement), Pirani, convection, and hot/cold cathode gauges. Two dual-channel features are provided to automatically switch from one gauge to another allowing continuous pressure display across the range of both gauges. Gauges can be zeroed and spanned individually, or cross-calibrated for span and zero. There is an automatic ion gauge power down at high pressures, and a sensor power down for cryopump regeneration. Two alarms and an analog output are also furnished as standard features.

Commands are activated through the front panel or via an RS-232C interface, and all entry parameters are stored in nonvolatile memory in case of power loss. A "displayless" version of the Type 146 is also available as an option.