| The world wide offshore oil industry uses many | | | | transducer may have the external housing removed |
| types of pressure transducer for control and | | | | with the bare PCB exposed to the environment to |
| measurement in processes, drilling controls and down | | | | reduce the profile, with oil filling used to stop any |
| hole tools. With the need to find oil in more | | | | seawater ingress. |
| inaccessible places the equipment used in exploration, | | | | Intelligent Pigs |
| drilling and production becomes ever more complex | | | | Subsea pipe lines are tested on a regular basis with |
| and the use of pressure transducer products is on | | | | an intelligent pig. The pig may be fitted with several |
| the increase. | | | | pressure transducer types to monitor pipeline |
| A few uses for pressure transducer sensors are: | | | | pressure, and hydraulic pressure. Also a differential |
| Wellheads | | | | pressure transducer may be used to measure the |
| Wellhead assemblies and Christmas tree use a range | | | | difference in pressure between the front and back |
| of pressure transducer sensors to monitor wellhead | | | | of the pig. As these devices are usually battery |
| pressure. Due to the hazardous area the pressure | | | | powered it is important to select a pressure |
| transducer has to be of intrinsically safe or explosion | | | | transducer with low power consumption. The Omni |
| proof design. A pressure transducer used in this | | | | series 10 pressure transducer only draws around 1mA |
| application also needs to be rugged and | | | | and is ideal for these applications. |
| weatherproof. The Omni series 23EXD and 23IS | | | | Core Analysis |
| pressure transducer types meet both of these | | | | In core analysis an oil sample may be forced at high |
| requirements. | | | | pressure through a section of rock core. A pressure |
| Downhole Tools | | | | transducer in this application needs to provide high |
| Various types of pressure transducer are used in | | | | accuracy measurement up to 10,000 PSI and be |
| downhole tools to monitor hydraulic pressure, and | | | | constructed of either hastelloy or monel to avoid |
| pipeline oil pressure. Often a high pressure transducer | | | | corrosion of the diaphragm. The Omni series 23 and |
| is required, with a high operating temperature range | | | | 25 pressure transducer meets this requirement. |
| due to the extreme environment. The Omni series 10 | | | | Drilling Mud Systems |
| and series 8 pressure transducer models offer ranges | | | | It is often a requirement to use a pressure |
| up to 1000 bar with operating temperatures up to | | | | transducer in mud flow lines. In these applications a |
| 150 degrees C. | | | | pressure transducer with a flush diaphragm is |
| Subsea Hydraulic Manifolds | | | | required. This is because with a normal pressure |
| Subsea hydraulic packs are used for various control | | | | transducer the pressure port is only 3 mm diameter, |
| applications in offshore oil production. Subsea hydraulic | | | | and is prone to clogging with mud particles. The Omni |
| packs may use up to 10 pressure transducer units. | | | | series 25 pressure transducer have a G1/2” or |
| The pressure transducer has to be made to the | | | | G3/4” flush diaphragm and can e supplied in EXD |
| smallest design, and be able to work with high | | | | or IS format for hazardous area use. |
| external case pressures. In this instance the pressure | | | | |