High Accuracy Differential Pressure Transmitter With High Overload Protection Of Up To 60 Times Range.
17 October 2005
Designed to combine high accuracy measurement with high overload protection at reduced cost, Keller's new PD-39X differential pressure transmitter employs two absolute pressure sensors to measure system line pressures P1 and P2.
The digital subtraction of line pressure P1 from P2 provides a stable differential output signal with the benefit of high overpressure protection, up to 60 times differential range.
The two 316L stainless steel sensors are digitally corrected for repeatable errors of non-linearity and temperature effects using modern microcontroller techniques. This results in a Total Error Band of 0.2% FS over a compensated temperature range of -10 to 80 deg C, dependent on the line to differential pressure ratio.
Differential pressure ranges are available from 200mbar (line pressure to 1000bar) with output as a 4 to 20mA or 0 to 10V analogue signal.
As standard, the PD-39X also includes a bus capable RS485 digital interface that enables measurement of line pressure P1, line pressure P2, differential pressure P1-P2 and sensor temperatures T1 and T2.
The PD-39X is available in industrial housings with options of process and electrical connections or can be offered as an OEM alternative for assembly into customer housings or installations. The transmitter is priced at a competitive £269.
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