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Low-voltage 10-48 Vdc or 12-32 Vac power is optional. Transducer excitation output, isolated.Dual solid state relays, isolated, for alarm or control.The Laurel ASCII protocol is simpler than the Modbus protocol and is recommended when all devices are Laureates. Modbus operation is fully compliant with Modbus Over Serial Line Specification V1.0 (2002).

Three protocols are user selectable: Modbus RTU, Modbus ASCII, or Laurel ASCII. Serial communications output, RS232 or RS485 (half or full duplex), jumper selectable.Output isolation from signal and power grounds eliminates potential ground loops. All selections provide 16-bit (0.0015%) resolution of output span and 0.02% output accuracy of a reading from -99,999 to +99,999 counts that is also transmitted digitally. 4-20 mA, 0-20 mA, 0-10V or -10V to +10V analog transmitter output, isolated, jumper-selectable and user scalable.Standard features of Laureate LTE transmitters include: Totals are stored in nonvolatile memory in case of power loss.

Totals are calculated as the product of rate and time in seconds regardless of the selected gate time. At the lowest frequency of 10 kHz and the minimum gate time of 10 ms, the transmitter is capable of 25 updates per second. This frequency is determined by measuring period over a selected gate time (from 10 ms to 200 s) and taking the inverse of period. A signal conditioner board converts the full-scale 0-1 mA, 4-20 mA or 0-10 V analog signal to a frequency of 10 kHz to 110 kHz. External reset of totals is provided by a special connector. Such applications typically make use of optional dual solid state relays, which are available as options.

With an Extended Main Board, the transmitter can also perform custom curve linearization (provided by a curvilinear spline fit with up to 180 data points), display 1/ rate (such as the time it takes a conveyor to pass through an oven), and perform batch control for repetitive fill operations.

With a Standard Main Board, the transmitter output can track rate (such as gallons per minute or watts) or totalized rate (such as gallons or kilowatt hours) whether the transducer output is linear or requires square root extraction (differential pressure flow transducers).

The Laureate process signal input transmitter and totalizer accepts 0-1 mA, 4-20 mA or 0-10V signals from flow meters and other transducers, such as watt meters, to track rate or totalized rate.

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