Because this sensor is an insertion style sensor, accuracy can only be stated under ideal installation" parameters. Therefore the 2552 has the following accuracy:
< +/- 2% of measured value where the fluid is water at ambient temperature the appropriate upstream and downstream distances are observed the sensor is inserted at the correct depth and there is a fully developed flow profile which is in compliance to ISO 7145-1982 (BS 1042 section 2.2)