Temperature transmitter with current output 4÷20 mA (at-1i-ds) Max-AT-1I-DS MAX-AT-1I-DS

Temperature transmitter with current output 4÷20 mA

This device is designed for precise temperature measurement using an external sensor and converting the result into a standard current signal of 4÷20 mA. The AT-1I-DS transmitter is a versatile solution for both professional installers and end-users who require reliable temperature measurement in various applications.

Features and application

The transmitter works with popular resistive sensors, such as KTY81-210 or RT/RT2 probes from F&F (available separately). The 4-20 mA output signal is widely used in automation, control and monitoring systems, ensuring compatibility with most measuring and recording devices. Thanks to noise filtering, the transmitter allows the use of signal cables up to 300 meters long without loss of measurement accuracy.

Advantages and benefits

• Versatility: The ability to work with different types of resistive sensors increases application flexibility.
• Standard output signal: The 4÷20 mA signal ensures easy integration with existing systems.
• Interference resistance: The anti-interference filter guarantees a stable and accurate measurement even in difficult industrial conditions.
• Compact dimensions: Mounting on a 35 mm rail (1 module – 18 mm wide) allows saving space in control cabinets.
• Wide measurement range: Support for temperatures from -50°C to 120°C (depending on the sensor used) allows for use in many different applications.
• Simple installation: Screw terminals 2.5 mm² facilitate the connection of power and signal cables.

Construction and operating parameters

The transmitter is designed to operate in an ambient temperature from -25°C to 50°C. The power supply is with DC voltage in the range from 9 V to 30 V DC. The current output is protected against overload, and its maximum receiver resistance depends on the supply voltage (e.g. 375 Ω at 9 V, 1200 Ω at 30 V). It is important to properly shield the signal cables and use high-quality power supplies to ensure stable operation of the device. The measurement accuracy is ±1.5°C, and the processing error ±0.5%.