Product Description

The 7AI294.70 is a versatile 4-channel analog input module designed by B&R, part of the B&R System 2003 series. This module is specifically engineered to evaluate potentiometer displacement gauges, providing precise and reliable measurements. With dimensions of 1.0" x 3.3" x 2.5" (2.5 cm x 8.3 cm x 6.3 cm) and weighing just 0.1 kg, it is compact and lightweight. The 7AI294.70 features a single-ended input type, capable of handling a range from 0 to UPot, and accommodates up to 4 inputs. The module uses an AF101 adapter module with a CP interface, and the module type is a B&R2003 screw-in module.

To ensure optimal performance, it is crucial that the shielded, twisted pair cable (3x1) used with the 7AI294.70 is kept as short as possible and runs separately to the sensor, isolated from load circuits without intermediate terminals. Shielding on the module side is achieved using a stress relief clamp, while on the potentiometer side, it involves direct connection to a grounded potentiometer housing with short connection lines. The module can handle a maximum continuous overload of +30 V for all connections except GND. It outputs digital values during overload conditions.

With a digital converter resolution of 13 Bit, the module provides high precision, featuring a maximum error at 25 degrees C of +0.04 % of full range and a temperature coefficient of +20 ppm/ degrees C of full range. The module's maximum error over the complete temperature range is +0.07 % of the full range, ensuring consistent accuracy. Additionally, the 7AI294.70 incorporates RC protection and supports isolated sensor types, making it robust and reliable for various applications.