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Resistance Temperature Detector(RTD)
The MCG 300 Resistance Temperature Detector (RTD) measures spot temperature by outputting a resistance change to
a gauge or transmitter. This change in resistance, which is directly proportional to temperature, is detected by a precision
input bridge circuit in the transmitter. In addition to two element leads, a third reference lead is provided. The reference
lead is used to remove lead wire resistance from the measurement of the temperature elements.
Averaging Temperature Probe
The MCG 350 (ATP) represents state-of-the-art temperature measurement, and is accepted worldwide to use as a standard
for custody transfer inventory and corrected volumes. The MCG 350 Averaging Temperature Probe (ATP) allows gauges
and transmitters to sense temperature through the change of resistance in the probe. The MCG 350 possesses a series
of temperature sensitive elements which all extend to the bottom of the probe. These resistors terminate at various levels
so that the average temperature of the product within the tank may be measured. The multiple element probe allows the
gauge to select the longest element covered by the product, providing the most accurate temperature reading.
Averaging Temperature Converter
The MCG 2350 is a stand-alone average temperature converter. Accepting its input from an average temperature probe
with up to 14 elements, the unit multiplexes these inputs to give a digital output that corresponds to the product temperature.
The MCG 2350 is available in two resolution ranges (0.1º C and 0.01º C). The housing is an explosion proof enclosure and
includes a critical intrinsic safety (I.S.) barrier, allowing for the use of either explosion proof probes or I.S. probes. The
MCG 2350 is normally connected directly to other L&J Engineering models via a serial connection, to give the transmitter
average temperature capabilities. The MCG 2350 is UL and ATEX/CENELEC Approved.
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