Bi-Directional Pressure Transducers for Vapor Recovery
By Core Sensors | August 9, 2018
By Core Sensors | August 9, 2018
Figure 1: CS10 with -70 to +70mBar pressure range
Core Sensors offers a variety of high quality bi-directional pressure transducers for use in low pressure vapor recovery operations. Unlike a unidirectional pressure transducer that can measure pressures from zero to a defined positive pressure (i.e. 0 to 70mBar), bi-directional pressure transducers measure both positive and negative pressure (i.e. -70mBar to +70mBar).
Bi-directional pressure transducers are commonly found in Vapor Recovery Units (VRU’s) which monitor and recover light hydrocarbon vapors that collect at the top of oil and gas storage tanks. The positive end of the pressure transducers measurement range is used to monitor the increase in vapor pressure at the top of the storage tank and the negative end of the measurement range is used to monitor the suction when recovering the vapors from the tank. Recovering these vapors reduces the potential impact on the environment since they are not being vented or flared and also presents financial savings for a company by converting the collected vapors into a liquid state which can then be added back into the storage tanks.
Other applications to consider bi-directional pressure transducers include:
Core Sensors utilizes 316L SS wetted material in the manufacturing process to allow for a wide media compatibility. Custom configurations are available including a Hastelloy C276 diaphragm material for added corrosion resistance.
Since bi-directional pressure transducers are very low pressure, it is important that the proper venting techniques are followed. Not properly venting the transducer can result in incorrect/inconsistent pressure readings and a reduction in expected lifespan of the equipment. Core Sensors uses two different venting methods depending on your electrical termination choice:
For applications where hazardous area approvals are not required, we recommend the CS10 Industrial Pressure Transducer. Figure 1 above shows a CS10 transducer with a +/-70mBar bi-directional pressure range, 4-20mA output signal, 1/4″ MNPT mechanical interface and a 1/2″ MNPT conduit fitting with integral cable. Visit the CS10 product page here for more information.
If hazardous location approvals are required, we offer sensors approved to:
– CSA Class I, Division 2 Non-Incendive
– CSA Class I, Division 1 Intrinsically Safe
Click here to view the complete line up of hazardous location approved pressure sensors.
For more information or to request a quote, call us at (862) 245-2673 or email [email protected].
About Core Sensors:
Core Sensors designs, manufactures and distributes high quality sensors for measuring pressure and temperature properties for industrial and hazardous applications worldwide. Core offers solutions for industrial, submersible, differential and hazardous applications in both standard and custom packaging. In-house design and manufacturing capabilities along with strategic manufacturing partners allows Core to create solutions to some of the most complex sensor requirements.
A common concern is the performance of the transducer in various temperature conditions. Temperature is an important specification as it has a direct effect on the accuracy of the transducer. In this article we will discuss the different temperature specifications that are commonly found on our datasheets and how to interpret them.
One of the most important steps when specifying the most appropriate sensor for your application is selecting the wetted material of the process connection (or pressure port).Core Sensors offers a wide range of wetted materials to ensure the most adequate compatibility in your application.
Core Sensors has received ABS (American Bureau of Shipping) Type approval for a series of pressure transducers to be used in marine and offshore applications.
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– Need a quote?
– Have a technical question?
– Don’t see what you need?
Fill out the form and a member of our sales team will contact you to discuss your requirements. You can also give us a call at (862) 245-2673.