The N321 temperature controller is used to measure, indicate, and control temperature in various systems. It accepts 4 sensor types: Pt100, Pt1000, NTC, or Thermocouple J. The control action can be programmed based on the application: direct action (refrigeration) or reverse action (heating). The internal 10 A relay can directly switch compressors or electrical heaters with ON/OFF control.
Features:
- Sensor input: Pt100 (-50 to 300 °C), Pt1000 (-200 to 530 ºC), Thermocouple J (0 to 600 °C), or thermistor (-50 to 120 ºC)
- IP65 enclosure frontal protection
- Output: Relay SPDT: 1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resistive)
- Resolution: 0.1 °C from -19.9 to 199.9 °C
- Accuracy: ± 0.5 °C / °F ±1 digit (Pt100 / Pt1000 / Thermistor) and ±2 °C for Thermocouple
- Adjustable hysteresis
- Sampling: 1.5 per second
- Working temperature: 0 to 50 °C
- Power supply: 100-240 Vac (internal) or 12-24 Vac/dc
- Digital communication via RS485 with Modbus RTU protocol (optional)
- Dimensions: 75 x 33 x 75mm