The Partlow VersaChart AV-9000 is a micro-based circular chart recorder and controller engineered for industrial process monitoring and control in demanding environments. It records up to four trend lines simultaneously using disposable fiber-tip pens on 10, 11, or 12-inch plain paper charts, delivering ±0.3% recording accuracy with automatic scale and alphanumeric data printing. The unit accepts up to eight universal inputs—thermocouples (J, K, T, R, S, E, B, N, C, G, D, Ni-Moly, Platinell II), RTD sensors (platinum 100 Ω and nickel 100 Ω, both 2 or 3-wire), voltage (0–25 mV to 0–10 VDC), current (0–20 mA, 4–20 mA at ≤650 Ω load), and contact closures—with integrated thermocouple linearization and cold junction compensation. Control capabilities span on/off, PID, manual, and alarm functions, with programmable profiles supporting up to 16 independent sequences of 8 segments each (ramp and dwell). Profiles deliver time-based setpoints, guaranteed soak tolerance verification, and configurable recovery actions following power loss. Eight relay outputs provide on/off switching. The 40-character vacuum fluorescent display and intuitive keypad enable straightforward setup; PC configuration port streamlines commissioning. Chart rotation adjusts from 6 to 9999 hours per revolution. Input scan rate is programmable; total instrument scan rate is typically 16 scans/second. Ambient temperature drift is 0.01% of span per °C deviation from 25°C. NEMA 3 construction with optional NEMA 4X enclosure rating handles harsh industrial environments.
Technical Specifications
• Recording Accuracy: ±0.3% of chart span (reference); 0.01% of span per °C ambient deviation from 25°C
• Chart Sizes: 10, 11, or 12-inch diameter plain paper
• Chart Rotation: 6 to 9999 hours per revolution (user-configurable)
• Pen System: Up to four disposable fiber-tip pens (Red, Green, Blue, Black)
• Scan Rate: Programmable input rate; 16 scans/second total instrument rate
• Universal Inputs: 8 total
– Thermocouples: J, K, T, R, S, E, B, N, C, G, D, Ni-Moly, Platinell II
– RTD: Platinum 100 Ω (2/3-wire, 0.00385 or 0.00392 coefficient); Nickel 100 Ω (2/3-wire)
– Voltage: 0–25 mV, 0–100 mV, 0–1 VDC, 0–10 VDC
– Current: 0–20 mA, 4–20 mA (≤650 Ω load)
– Contact Closure: Open/closed switch sensing
• Relay Outputs: Up to 8 on/off
• Profiles: 16 maximum, 8 segments per profile (ramp/dwell)
• Control Types: On/off, PID, manual, alarm
• Signal Conditioning: Automatic thermocouple linearization and cold junction compensation
• Enclosure: NEMA 3 standard; NEMA 4X option available
– Key Features
• Multi-pen color recording on plain paper for superior legibility and archival durability
• Four independent control loops with optional PID closed-loop capability
• Programmable time-based setpoint profiles with guaranteed soak verification
• Automatic scale printing and alphanumeric data annotation
• PC configuration port for setup and data access
• Recovery logic for power-loss scenarios
– Typical Applications
Batch processing, thermal profiling, environmental chamber monitoring, industrial process validation, pharmaceutical manufacturing, laboratory data logging.
– Compatibility & Integration
Universal input conditioning supports standard industrial sensor types. Contact closure inputs require no external power or conditioning. PC configuration interface facilitates integration with existing commissioning workflows.
