Batching petroleum and other liquids by volume gets complicated once temperature comes into play, since a litre of fuel at 15°C is not quite the same as a litre at 35°C. The Contrec 515 BT01 Dual Stage Batch Controller with Temperature Compensation handles this correction automatically while it batches.
Like the standard 515 dual stage controllers, it fills fast with a coarse valve, then switches to a fine valve as the target volume gets close. The frequency flow input accepts a quadrature signal for ISO 6551 Level B pulse security, so pulse miscounts are caught rather than passed through. Temperature and density inputs then correct the delivered volume back to standard reference conditions, following ASTM D1250-04 and API Table 54 for crude oils, lube oils, refined products, and LPG, or using a general coefficient of expansion or a user-defined table for other fluids.
It also has the same security features as our other secure batch controllers: it can require a valid ID-Tag and a permissive input before starting a delivery, with the ID-Tag and transaction logged so deliveries can be linked back to an operator or an external database.
Before we quote this, we would normally check your flowmeter type and signal, the fluid being batched, and whether you need temperature compensation to a specific reference standard.
Hope this helps.
