The MKS Instruments 286 is a dual-channel thermocouple vacuum gauge controller engineered for precise pressure measurement and process control in vacuum systems. It accepts input from two independent thermocouple gauge transducers and provides independent pressure readout via digital bargraph display scaled in Microns. Four independently adjustable setpoints deliver relay-energized control signals—capable of standard or inverted logic—enabling automated pump-down sequences, alarm thresholds, and system interlocks. A zero adjustment control compensates for atmospheric reference conditions, while dedicated setpoint adjustment controls configure the pressure threshold at which each relay activates. Status-indicating LEDs confirm operational state. The instrument rackmounts and weighs 2.50 kg, making it suitable for integration into vacuum benches, process chambers, and production systems where thermocouple-based pressure monitoring is preferred.
– Technical Specifications
• Channels: 2 independent thermocouple gauge inputs
• Setpoints: 4 adjustable setpoints with relay control outputs
• Display: Digital bargraph display with Micron scale per channel
• Transducer Compatibility: MKS Type TC-1 thermocouple gauges
• Cable Support: CB286-2 (up to 25 feet) or CB286-3 (over 25 feet) connections
• Power Supply: Line voltage selector; +240 volt fuse (F101) on PC board terminals
• Weight: 2.50 kg
• Mounting: Rackmount configuration
– Key Features
• Zero adjustment for atmospheric reference calibration
• Independent setpoint adjustment controls for each threshold
• Relay energization triggered when pressure falls below setpoint (reversible logic option)
• Status-indicating LEDs for at-a-glance operational verification
• Dual-channel independent operation allows simultaneous monitoring of separate process lines
– Typical Applications
• Vacuum system pressure monitoring and control
• Process pump-down sequencing and interlock
• Pressure-threshold alarms and shutdown protection
• Dual-zone vacuum chamber management
– Compatibility & Integration
The 286 connects to MKS Type TC-1 thermocouple gauge transducers via CB286-2 or CB286-3 cables selected by cable run length. Setpoint relay outputs interface with external control circuits, PLC inputs, or solenoid valve drivers. Rackmount form factor integrates into standard 19-inch instrument racks.
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