Universal Input Controller Manufacturer
AUTC48 Flame Proof Universal Input Controller is a versatile and rugged universal input controller engineered for hazardous and flameproof environments. It accepts universal input types such as 4–20 mA, 0–5 V DC, PT100 (RTD), and thermocouples of types J, K, R, S, all front-key selectable. The controller features two 3 A relays configurable via the front panel to operate in heat or cool mode, and includes front-key calibration capability. Available in two enclosure sizes — 48×48×85 mm and 96×96×85 mm — the AUTC48 ensures flexibility in panel designs. Aranka Instruments LLP is a reputed Universal Input Controller Manufacturer and Supplier in Ahmedabad, Gujarat, India, delivering precision and safety for industrial automation applications.
Universal input 4-20mA/0-5VDC, PT-100, Thermocouple [J/K/R/S]
2nos Relay 3A 1Co output
Heat & Cool Mode Programmable.
SMPS Power 90 ~260VAC
Analog output 4-20mA
RS485 Modbus RTU.
48x48x85mm & 96x96x85mm Size.
| Power | 90~260VAC @ 50Hz | |
| Input | 4-20mA / 0-5VDC, PT-100, Thermocouple [J/K/R/S] | |
| Display | Dual Segment | |
| Digital Output | 2 Nos Relay 3A 1CO | |
| Analogue Output | 4-20mA | |
| Communication | RS 485 Modbus RTU [Optional] | |
| Calibration | Front Key | |
| Enclosure | 48x48x85mm / 96x96x85mm | |
| Enclosure MOC | ABS | |
| IP Rating | IP55 | |
Frequently Asked Questions (FAQs)
What does “universal input” mean?
“Universal input” means the controller can accept multiple types of sensor signals — e.g. 4–20 mA, 0–5 V DC, PT100 (Resistance Temperature Detector — RTD), and thermocouples (types J, K, R, S) — all selectable via the front keys.
What outputs are available on AUTC48?
The AUTC48 has two relay outputs rated at 3 A each. These relays can be configured (via the front keys) to operate in heat or cool control modes. (If the “F” variant, AUTC48F, also includes a 4–20 mA analog output.)
Can I calibrate or configure it on site?
Yes. The device supports front-key calibration and configuration, so you can set input type, output behavior, alarm points, etc., directly on the instrument.
What enclosure sizes are offered?
The AUTC48 is available in two standard sizes: 48 × 48 × 85 mm and 96 × 96 × 85 mm, giving flexibility in mounting and panel layout.
What is the relay switching capacity and type?
Each relay is rated at 3 A (resistive) in a 1 CO (changeover) configuration.
Is this unit flame proof / explosion proof?
Yes. The AUTC48 is designed for flame proof (explosion proof) applications, meaning its enclosure is built to contain any internal fault or spark so as not to ignite surrounding hazardous atmospheres.
What environments or applications is the AUTC48 suited for?
It is ideal for industrial automation in hazardous zones, chemical plants, petroleum, process industries, HVAC, and wherever precise input-to-output control is needed under safety constraints.
What is the typical power supply requirement?
Though the exact spec should be confirmed from datasheet, such controllers generally use AC supply (e.g. 90–260 VAC, 50 Hz) or DC supply options, with internal switching power supply.
How are heat and cool modes used, and what’s the difference?
In heat mode, the relay is energized when the measured variable is below a setpoint (to provide heating). In cool mode, the relay is energized when the measured variable exceeds the setpoint (to drive cooling). The relays can be assigned accordingly to control heating or cooling equipment.
What are typical industries or installations where AUTC48 is used?
Used across industries like oil & gas, petrochemicals, refineries, pharmaceuticals, chemicals, food & beverage, water treatment, HVAC systems, etc., wherever robust control in hazardous zones is needed.