Circular Temperature Chart Recorder with Built-In Bi-Metal Sensor

This instrument records temperature over time using a circular paper chart driven by a clock mechanism and a built-in bi-metal sensor. As the sensor bends in response to temperature, it moves a pen or stylus across the chart. The recorder provides a permanent, analog record useful for audits, thermal process tracking, or facility monitoring without requiring power. Its mechanical simplicity makes it reliable and low-maintenance, suitable for labs, HVAC, food production, or pharmaceuticals.

Key Features:

Mechanical chart recording with bi-metal sensing

Circular chart paper for time-based recording

No external power required for basic operation

Clear visualization of temperature trends over days or weeks

Reliable, low-maintenance design for long-term use