The MKS Instruments 670B is a single-channel signal conditioner and power supply unit designed to interface with MKS High Accuracy Baratron® pressure transducers. It provides excitation voltage, signal conditioning, and real-time pressure display with full remote control via RS-232 interface. The 670B delivers 0 to ±10 VDC output into loads exceeding 10 kΩ and accepts 0 to 10 VDC input signals from compatible Baratron sensors.
Technical Specifications
• Display: 3½, 4½, or 5½ digits, 2-line LCD with 2 Hz update rate
• Display Units: 12 user-selectable options—Torr, mTorr, mmHg, mbar, Pa, kPa, inHg, inH₂O, cmH₂O, psi, % Full Scale, ppm Full Scale
• Input/Output Signal: 0–10 VDC input; 0 to ±10 VDC output per range
• Power Supply: 90–132 VAC or 180–264 VAC, 50–60 Hz, 75 VA maximum
• Communication: RS-232 standard; IEEE-488 interface optional
• Connectors: 37-pin female Type D (I/O), two 9-pin male Type D (remote signal, RS-232), 24-pin female IEEE-488
• Trip Points: Two user-configurable with front-panel LED status indicators
• Relay Ratings: 24 VAC/DC @ 1 A resistive
• Ranging: x1, x0.1, x0.01 of sensor full scale; manual or auto-ranging
• Data Averaging: 0.1–10 seconds, user-selectable
• Response Time: 1, 40, or 400 msec options
• Operating Temperature: 15–40°C
• Dimensions: 88 × 240 × 234 mm (3U half-rack mount)
– Key Features
• Dual voltage input (90–132 VAC and 180–264 VAC) for global operation
• Local/remote control via key-lock front-panel switch
• Automatic range selection optimizes on-scale measurement
• Configurable averaging and response time for condition-specific optimization
• EMC Directive 2004/108/EC and Low Voltage Directive 72/23/EEC compliant
– Compatibility & Integration
Compatible with MKS Baratron Type 590, 615, 616, 690, 698, and 120A transducers. The 690 and 698 series support full-scale ranges from 0.1 to 25,000 mmHg (Torr). All connector interfaces support standard industrial communication protocols for laboratory and process control environments.
