KROHNE OPTIBAR P 3050 C EN - Manual (Page 11)

DEVICE DESCRIPTION
2
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OPTIBAR P 3050 C
www.krohne.com 03/2012 - 4001953401 - MA OPTIBAR P3050C R02 en
2.2 Device description
The pressure gauges are designed solely for the direct measurement of process pressures and
indirect level measurement in straight, symmetrical tanks. In addition to the main measuring
parameters, it is also possible to measure the sensor temperature.
The device can be operated "on site" using a push button on the converter electronics (zero
point, measurement span start and span end) or using the optionally available LCD display with
four push buttons.
Depending on the measuring range and overload resistance, piezoresistive or thin film sensors
may be used. The pressure is transmitted either directly or by way of a separating diaphragm
and a liquid fill to a measuring diaphragm, which then distorts and reverses under the applied
pressure. The measuring diaphragm features RTDs that change their resistance value based on
the mechanical distortion, enabling the applied pressure to be inferred.
Communication takes place via an analogue 4...20 mA current signal in 2-wire technology.
The measuring device is supplied ready for operation. The factory settings for the operating data
correspond to your order specifications.
The following versions with retracted diaphragm are available:
• Compact version with analogue output 4...20 mA
• Compact version with analogue output 4...20 mA and optional LCD display
Versions with flush mounted diaphragm are pending.
.book Page 11 Thursday, March 8, 2012 9:29 AM