The Yokogawa N3T307004 is a Spare Print Head (Recording Pen) for select models of Yokogawa Circular Chart Recorders.
Circular chart recorders are instruments that record process data (like temperature, pressure, flow) on a circular paper chart that rotates over a fixed time period (e.g., 24 hours, 7 days). The print head is the component that physically marks the ink onto the chart paper to create the trend line.
This specific part (N3T307004) is a replaceable maintenance component used in certain Yokogawa recorder models. It is not a standalone electronic instrument but a critical consumable part for the recorder's operation.
