Model LTE61VF4 includes:
Model LTE61VF3 DIN rail transmitter by Laurel Electronics has Scaled rate or total from 0-10V analog signals, Ethernet I/O plus 4-20 mA or 0-10V analog output and dual relays. The model is configured for Standard main board and Low voltage power 10-48 Vdc or 12-30 Vac. It 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 transmitter's 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. This frequency is determined by measuring period over a selected gate time (from 10 ms to 200 s) and taking the inverse of period. At the lowest frequency of 10 kHz and the minimum gate time of 10 ms, the transmitter is capable of 25 updates per second. Scaling is done mathematically. Totals are stored in nonvolatile memory in case of power loss.
Three analog output transmitter settings are jumper selectable: 4-20 mA, 0-20 mA or 0-10V. The output tracks the reading up to 99,999 counts that would be transmitted digitally. Output isolation from signal and power grounds eliminates potential ground loop problems. The supply can drive 20 mA into a 500 ohm (or lower) load for 10V compliance, or 10V into a 5K ohm (or higher) load for 2 mA compliance.
Standard features of Laureate transmitters include:
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