The MKS Instruments 670A is a dedicated signal conditioner and power supply engineered to operate MKS Baratron high-accuracy pressure transducers. It supplies regulated power, conditions sensor output signals, and provides local display and relay control functionality for integration into data acquisition and process control systems. The 670A interfaces with MKS 300 and 600 Series Baratron transducers and supports MKS Type 590, 615, 616, 690, and 698 sensors.
Technical Specifications
Power & Electrical
• Input: 90–132 VAC or 180–264 VAC, 50–60 Hz, maximum 75 VA
• Sensor signal input: 0 to 10 VDC
• Conditioned output: 0 to ±10 VDC per range into >10 kΩ load
• Trip point relay: 24 VAC/DC @ 1 Amp resistive
Display & Control
• LCD display: 3½, 4½, or 5½ digits, 2-line
• User-selectable units: Torr, mTorr, mmHg, mbar, Pa, kPa, inHg, inH₂O, cmH₂O, psi, % FS, ppm FS
• Ranging: Manual or automatic (x1, x0.1, x0.01 of sensor FS)
• Data averaging: 0.1 to 10 seconds user-selectable
• Response time: 1, 40, or 400 msec user-selectable
I/O & Communication
• RS-232 serial interface
• 37-pin female D-type (analog/digital I/O)
• 9-pin male D-type (remote signal)
• IEEE-488 connector available on 670B model
Physical
• Dimensions: 88 mm H × 240 mm W × 234 mm D
• Form factor: 3U half-rack mounting
– Key Features
• Two user-configurable trip points with front-panel LED status indicators
• Automatic or manual pressure range selection
• Real-time pressure display in twelve engineering units
• Adjustable signal conditioning parameters: averaging window and response time
• Relay outputs rated for process control applications
– Typical Applications
Vacuum system monitoring, leak detection, process pressure control, data logging in research instrumentation, and automated process control systems requiring pressure feedback.
– Compatibility & Integration
The 670A connects directly to MKS 300 and 600 Series Baratron sensors. Extended sensor compatibility includes MKS Type 590, 615, 616, 690, and 698. Integration with existing control architectures is enabled via RS-232 communication and standard relay contacts for setpoint switching.
