5.2.1. OUT1 Batch Relay
The batch relay is dedicated to valve on/off control and it can be manually or automatically compensated for batch overrun. Manual overrun compensation allow the operator to compensate for valve closure time. The operator is requested to enter the overrun volume to de-energize the batch relay early, compensating the valve closing time and the batch overrun error. Automatic overrun compensation counts sensor pulses during batch operation and any extra pulses after batch stop. The instrument calculates the estimated overrun volume and automatically reduces the batch size for the next batch cycle. During the next batch cycle, the batch relay will de-energize early closing the valve early and eliminating the overrun error.