Best Circular Temperature Chart Recorders for 6-Inch Charts
When monitoring environmental conditions, a reliable circular chart recorder helps visualize temperature trends over time. This guide highlights five widely used 6″ chart models from reputable brands, covering Fahrenheit and Celsius options, various voltages, and features like digital displays, front-panel controls, and remote sensing. Use this overview to compare capabilities and choose the right recorder for your facility, lab, or industrial application.
| Product | Brand | Chart Diameter | Voltage | Key Feature |
|---|---|---|---|---|
| CR87B Fahrenheit Temperature Circular Chart Recorder | Supco | 6″ | 110-120V | Advanced microcontroller, front-panel controls |
| SL4350 Temperature Chart Recorder | Dickson | 4″ / 101mm | Not specified | Digital display, 7-day or 24-hour rotation |
| CR87BC Celsius Temperature Circular Chart Recorder | Supco | 6″ | 110-120V | Advanced microcontroller, front-panel controls |
| CR87J Fahrenheit Type J Thermocouple Recorder | Supco | 6″ | 110-120V | Type J thermocouple, remote readings |
| CR87B-220 Fahrenheit Temperature Circular Chart Recorder | Supco | 6″ | 220-240V | Advanced microcontroller, front-panel controls |
Supco CR87B Fahrenheit Temperature Circular Chart Recorder

The Supco CR87B is a 6″ circular chart recorder designed for Fahrenheit monitoring. Its advanced microcontroller supports reliable operation, and a large LED digital display makes temperature readings easy to read at a glance. All controls are located on the front panel, enabling fast and straightforward setup in busy environments.
Dickson SL4350 Temperature Chart Recorder

The Dickson SL4350 offers a digital display and flexible timing with 7-day or 24-hour rotation. The device supports Celsius and Fahrenheit readings, enabling quick unit switching to align with regional preferences. Its compact form is suitable for labs or process monitoring requiring clear, periodic temperature logging.
Supco CR87BC Celsius Temperature Circular Chart Recorder

The CR87BC variant provides Celsius-scale measurements on a 6″ chart. Like its Fahrenheit counterpart, it features an advanced microcontroller and a large LED display for clear temperature readings. Front-panel controls allow rapid configuration and setup in field conditions where quick access matters.
Supco CR87J Fahrenheit Type J Thermocouple Recorder

The CR87J adds a Type J thermocouple input for extended temperature range coverage. With a 6″ chart and a -40°F to 120°F (-40°C to 50°C) range, it supports remote readings, enabling measurements away from the recorder with accurate long-distance sensing.
Supco CR87B-220 Fahrenheit Circular Chart Recorder

The CR87B-220 extends the same feature set to higher voltage (220-240V) environments. It retains the front-panel controls and large display, making it suitable for industrial settings with higher power requirements while delivering robust temperature monitoring on a 6″ chart.
Buying Guide
Key considerations help buyers select the right circular chart recorder for 6″ charts:
- Chart diameter and scale: Ensure a 6″ chart matches your enclosure or rack space and that the temperature range fits your process.
- Measurement type: Choose Fahrenheit or Celsius depending on local standards and display preferences. Some models offer digital toggling between scales.
- Input type: Thermocouple-based models (like Type J) enable remote sensing and broader temperature ranges, while direct analog sensors may suffice for simple monitoring.
- Voltage compatibility: Pick a model that matches power availability (110-120V, 220-240V). Consider whether a dual-voltage version is needed for facilities with multiple power supplies.
- Display and controls: Front-panel controls and a large LED display improve readability and setup speed in busy environments.
- Data integrity features: Look for battery backup or digital logging capabilities to prevent data loss during outages.
- Maintenance and compatibility: Consider available replacement charts, paper supply, and compatibility with existing chart recorders or paper rolls.
- Remote monitoring: Some models support remote readings or easier integration with charting software for archival purposes.
For facilities requiring high-precision logging, assess the availability of replacement paper, pens, and accessories, as well as service support from the manufacturer. When comparing options, weigh the balance between measurement range, display readability, and ease of setup. Voltage configuration, input types, and data retention features are crucial for long-term reliability in industrial environments.