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

Temperature transmitter with current output 4-20 mA

The AT-1I transmitter is a device designed for precise temperature measurement using an external resistance sensor. Its main function is to convert the measured value into a standard 4-20 mA current signal, ensuring compatibility with a wide range of control and data logging systems. This solution is ideal for both professional installers and end-users who need reliable temperature measurement in various applications.

Features and application

The AT-1I transmitter works with resistance sensors of the KTY81-210 type or their equivalents (available separately). The 4-20 mA output signal is protected by a noise filter, allowing the use of cables up to 300 meters long without loss of measurement accuracy. The device is mounted on a standard 35 mm rail and occupies only one module (18 mm wide), making it easy to integrate into existing installations. Therefore, the transmitter finds application in HVAC systems, industrial process monitoring, building automation, and anywhere where precise and reliable temperature measurement is required.

Advantages and benefits

• Wide measurement range: from -50°C to 100°C – enables use in various environmental conditions.
• Standard 4-20 mA output signal: ensures compatibility with most control and data logging systems.
• Noise filter: guarantees stable and accurate measurement even with long signal cables (up to 300 m).
• Compact dimensions (1 module): facilitate mounting in tight spaces and integration with existing installations.
• Compatibility with various sensors: the transmitter works with resistance sensors of the KTY81-210 type or their equivalents, providing flexibility in component selection.
• Supply voltage 9÷30 V DC: provides a wide range of supply voltages, making it easy to adapt to available energy sources.
• High accuracy: processing error ±0.5% and maximum measurement error ±1.5°C ensure precise measurement results.

Technical parameters

The device operates in a supply voltage range from 9 to 30 V DC. Its power consumption is only 0.8 W, making it an energy-saving solution. The transmitter has screw terminals with a cross-section of 2.5 mm² and a protection class of IP20, ensuring safe use in an industrial environment. The operating temperature of the device is in the range of -20°C to 50°C. It is worth remembering that temperature probes are available separately and should be selected appropriately for the specific application.