Loop interface module unlocks HART transmitter potential
North Hills, Calif. - The HIM Smart HART loop interface and monitor announced by Moore Industries on May 14, 2002 allows up to three additional analog process measurements to be obtained from smart HART multivariable mass flow, level, pressure and pH transmitters with no additional process penetrations or wiring.
North Hills, Calif. - The HIM Smart HART loop interface and monitor announced by Moore Industries on May 14, 2002 allows up to three additional analog process measurements to be obtained from smart HART multivariable mass flow, level, pressure and pH transmitters with no additional process penetrations or wiring. For a multivariable mass flow transmitter, this may include pressure, differential pressure, process temperature, flow rate, flow total and sensor temperature.
Using the HART digital data that "rides" on the 4-20 mA wires, the HIM "breaks out" up to three 4-20 mA signals that can represent any combination of a smart multivariable transmitter's primary, second, third, or fourth measurement variables. These additional signals can then be used by analog control systems, such as a DCS or PLC.
Dual alarm trip outputs can be individually configured to warn of high/low process conditions. They can also be set to alert the user if the monitored device and/or the HART monitor itself is in a fault condition. This includes use of the HART protocol's status bits to indicate a smart transmitter cold start; field device malfunction; or that the primary variable analog output is fixed, saturated, or out of limits.
The device, which is packaged in a compact DIN-rail mount module, sets up quickly and easily using its developer's single window configuration software equipped with HelpMap, a comprehensive, searchable web-based help system that guides the user from hook-up to start-up.
For more information, visit www.miinet.com ; Moore Industries-International, Inc. 16650 Schoenborn St., North Hills, Calif. 91343
Control Engineering Daily News Desk
Dick Johnson, senior editor
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