SHIMADEN SR93-4I-N-90-100R temperature control instrument

The SHIMADEN SR93-4I-N-90-100R is a compact, single-loop digital indicating temperature controller designed for precise and reliable process control applications.

**Technical Parameters:**

*   **Control Output:** Relay contact output (rated 250V AC, 3A resistive). The "4I" suffix indicates a 4-20mA current transmitter output for direct valve or actuator control, while the relay provides an additional on/off control signal.

*   **Input Type:** Thermocouple or RTD input, user-selectable. Specific types (e.g., K, J, Pt100) are determined by the instrument's ordered suffix code.

*   **Control Action:** On-Off, Standard PID, or Heating/Cooling PID control.

*   **Setting Range:** The "-90-100R" suffix denotes a setting range from -90 to 100 degrees in the selected engineering unit (e.g., °C or °F).

*   **Display:** Dual 4-digit LED displays. The primary display (PV) shows the measured process value, and the secondary display (SV) shows the setpoint.

*   **Power Supply:** 100-240V AC, 50/60Hz.

*   **Accuracy:** Typically ±0.5% of full scale ±1 digit for display, with control accuracy dependent on the system configuration.

*   **Ambient Operating Conditions:** 0 to 50°C (32 to 122°F), 35-85% RH (non-condensing).

*   **Panel Cutout:** 45.5mm x 45.5mm (1.79" x 1.79") for DIN standard panel mounting.

*   **Communication:** Optional RS-485 communication module is available for integration with monitoring systems.

**Product Description:**

The SR93 series represents a versatile and cost-effective solution for industrial temperature regulation. The SR93-4I-N-90-100R model combines a clear digital indication with flexible control outputs. Its key feature is the simultaneous provision of both a relay contact and an isolated 4-20mA analog output, allowing it to drive a final control element like a valve or solid-state relay directly while also providing alarm or auxiliary control functions via the relay.

The instrument offers easy operation through front-panel keys for setpoint adjustment and configuration. It incorporates advanced control algorithms for stable operation, minimizing process overshoot and improving response to disturbances.