Delta-T Devices Ltd. , , Energy XPRT News Energy XPRT Downloads premium About Solutions products industries Publications videos articles Latest news Downloads Home Companies & Suppliers Delta-T Devices Ltd. Downloads SPN1 and BF5 Comparison - ... SPN1 and BF5 Comparison - Datasheet The SPN1 is an advanced version of the BF5 and so the two instruments have many features in common.