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KING-GAGE® DP Differential Pressure Transmitters

KING-GAGE® DP Differential Pressure Transmitters
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KING-GAGE® DP Differential Pressure Transmitters - 1

Effective: September 2010 Supplment 1100-40 K N G-GAGE Differentlal Pressure Transmitte rs Tank Liquid Level Inventory Monitoring D/PTransmitters ■ Piezoresistive El险ment Needs Less Frquent Recalibration ■ 4-20 mA Two Wire Output for Monitoring or Control ■ Better Than ±0.02% Span Repeatability Liquid level gauging demands a high degree of accuracy and repeatability. This is especially true for quality control in batch processing operations. That is why KING-GAGE® D/P Transmitters are specifically designed to provide optimal performance in tank gauging applications. They utilize a precision piezoresistive sensor element that provides longer term stability. Guaranteed accuracy is within ± 0.2% F.S. and repeatable to within ± 0.02% of calibrated span. D/P Sensor Control provides 4-20 mA output for pneumatic sensor Pressure to mA Conversion KING-GAGE D/P Transmitters accept either gage or differential pressure pneumatic inputs that are converted to a proportional 4-20 mA output signal. This two wire signal loop is compatible with typical process components that accept analog input including PLCs. Designed to operate over a broad voltage range, these transmitters work with power sources ranging from 14-40 Vdc (based on load requirements). Output current limiting and continuous no-load operation ensures reliability in even the most demanding situations. Isolated test meter terminals permit in-process monitoring for troubleshooting. This allows the user to easily check the transmitter output without having to remove it from the process loop circuit. Pressure Ranges are Span Adjustable Transmitter span accommodates a 3:1 turndown ratio* to match the application pressure range (i.e., tank depth). This permits ranging of the device to provide full scale output for maximum resolution in process con-trol operations. Individual transmitter ranges of 0-5 through 0-50 psid are offered. These yield far greater stability than compa魭rable single range units requiring high turndown ratios to fit the application. KING-GAGE * 3:1 turndown ratio is applicable to 0-10 and 0-30 nominal range, refer to specifications for detailed span adjustment available on specific range models. ^3E3king engineering division www.king-gagp.ge m

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KING-GAGE® DP Differential Pressure Transmitters - 2

D/P Transmitters for Tank Gauging Supplment 1100-40 D/P Pneumatic Sensor Controls The KING-GAGE D/P Transmitter is also offered in a hybrid version combined with an air flow control for pneumatic sensors or downpipe (bubbler) systems. These combination units allow for direct 4-20 mA signal from the tank using the integrated differential pressure transmitter. D/P Sensor Controls are designed for use with KING-GAGE pneumatic diaphragm sensors. The air control portion of these units creates a 1:1 pneumatic pressure directly proportional to liquid depth in the tank. Acting as a force balance,...

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KING-GAGE® DP Differential Pressure Transmitters - 4

KING-GAGE®D/P Transmitters D/P Transmitters for Tank Gauging Tank Gauging Applications Acting on the force balance principle, a pneumatic sensor generates air pressure equivalent to the hydrostatic force created by liquid depth. This pneumatic pressure is directed into the D/P transmitter. Pressure is converted to an electronic 4-20 mAdc output proportional to liquid depth. Twisted pair cabling is used to form the signal loop through which the remote indicator receives the transmitter output. The KING-GAGE® indicators shown in these system views correlate the transmitter output to total...

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