Is there an advantage to installing WirelessHART instrumentation over ISA100? Although it has been announced that the HART 7 specification containing WirelessHART has been approved by the HART Communications Foundation, there are no instruments currently on the market that conform to this specification as of Nov. 2007. Several prototypes are available from a single vendor, but were designed prior to the approval of the specification. Once the products and compliance tests are available, this vendor has promised free upgrades of WirelessHART instruments manufactured before the standards were introduced. Real standards-conforming and fully compliant WirelessHART instruments are scheduled to be shipped by several suppliers in 2008. Only standards-compliant WirelessHART instruments will be interoperable with each other and with WirelessHART-compliant Gateways.
展开▼
