Sentinel Microprocessor Circular Chart Recorder

The Sentinel microprocessor recorder is a circular chart recorder and recorder controller with one, two or three pens. It accepts thermocouple types K, T, J, N, E, B, R and S, 3-wire Pt100 RTDs and DC voltage or current signals, and records them on a 240 mm (9.5") circular paper chart driven by a DC stepper motor. Chart speeds range from 1 to 24 hours in steps of one hour and from 2 to 31 days in steps of one day, and each input has high and low measurement ranges. Housed in a steel case with an acrylic door window rated IP55, it is mounted on a panel or a surface.

Features

• One, two or three pen versions, plus flow, dairy and timber kiln versions
• Universal inputs: thermocouples K, T, J, N, E, B, R and S, Pt100 RTD (3-wire), ±2 V, +20 V, ±2 mA and ±20 mA
• RTD accuracy ±0.2 °C (low range below 200 °C) and ±0.8 °C (high range above 200 °C)
• Thermocouple accuracy ±0.25% FS, linear inputs ±0.2% FS
• Minimum span 5 °C for thermocouples K, J, T, E, N and RTD
• 3 or 6 user-configurable alarms
• Optional isolated 0–20 mA or 4–20 mA retransmission output, 12-bit resolution
• Steel case with acrylic door window, IP55, for panel or surface mounting

Applications

• Temperature recording with thermocouples and RTDs
• Recording of DC voltage and current process signals
• Flow recording (flow versions)
• Dairy processing (dairy version)
• Timber kilns (timber kiln version)

Options

• Alarms: 3 (standard on single pen) or 6 (standard on two and three pens)
• Retransmission output: required or not required
• Events pen: required (1 pen only) or not required
• Transmitter power supply: required or not required

LKS supplies the Sentinel microprocessor chart recorder in Malaysia, with installation, configuration and after-sales support. Contact our engineers for model selection and a quotation.