Amplified Summing Junction Box
An amplified summing junction box designed for use with strain gage load cells which have a minimum of 1,000 ohm bridges. The unit electronically sums the outputs of up to four load cells to form a single output equal to the sum of the loads detected by each load cell. Model ISBA features four 5-position terminal strips for load cell input and one 7-position terminal strip with internally jumped sense terminals for output to the instrument. Summing junction boxes of this type are commonly used in a variety of large industrial weighing applications such as scales, bins, tanks, and hoppers.
Model ISBA provides a single output of 0-5 vdc (3-wire) or 4-20 mA (3-wire) to the data acquisition system. The output signal is trimmed via four multi-turn trim pots, one for each load cell. Model ISBA Is reverse polarity and short circuit protected and is CE approved. The card is housed in a rugged IP-66 rated ABS enclosure to survive harsh environments and can be conveniently located in-line and away from more extreme conditions. Options include special temperature ranges, stainless steel enclosure, and remote buffered shunt calibration.