OPTIBAR 5060 eDP
Electronic differential pressure transmitter for level, differential pressure and density applications
Communication options:
- 4…20mA HART
- Foundation Fieldbus
- Profibus PA
Approvals:
| Ex: | Ex-i, Ex-d, Ex-t (Dust), NEPSI |
| Hygienic: | 3-A, EHEDG, EC 1935/2004 |
| SIL: | SIL 2/3 |
| Ship: | DNV-GL |
| Other: | Oxygen |
In some applications electronic differential pressure is a great alternative to the use of classical differential pressure transmitters. The measuring principle is based on two discrete gauge pressure transmitters, which are mounted in the same way as a classical differential pressure transmitter on the vessel. One transmitter, usually on the top of the vessel, acts as a so-called SLAVE transmitter to measure the gas pressure in the tank. This SLAVE is electronically connected to the MASTER transmitter. The MASTER transmitter measures the gauge pressure on the very bottom of the vessel and calculates the pressure difference.
In this electronic DP configuration of the OPTIBAR 5060 series, the SLAVE sensor provides fast and synchronous measurement values to the MASTER, which acts and behaves like a classical DP transmitter in terms of setup and commissioning. The main advantage of an eDP is its efficient connection with the vessel. Smaller process connections without capillaries with a maximum distance of up to 25 m/75 ft between the top and the bottom tap save cost and installation time. The electronic DP loses its edge over a classical DP in applications with higher gas pressures.
The eDP can be configured with metallic (PM 5060) or ceramic (PC 5060) process diaphragms, granting the benefits of both technologies to the application.
Highlights:
No more capillaries
Diaphragm seal systems are required in numerous hydrostatic level applications of pressurised tanks. In their applications, capillaries increase installation efforts, require winterisation and slow down the overall response time of the system due to their length. Electronic differential pressure uses signal cables instead of oil filled capillaries.
Food approvals
KROHNE OPTIBAR pressure instrumentation presents the complete line of sanitary designs and materials which meet the stringent requirements of hygienic applications. This means a huge advantage for e.g. food and beverage companies who align their production processes with a focus on product safety and production reliability.
- Hygienic design: 3-A and EHEDG standards to ensure cleanability of our products in hygienic processes
- Hygienic process connections: OPTIBAR devices are available with the suitable process connection
- Material selection: KROHNE devices are specifically designed by using GRAS (Generally Recognised as Safe) listed materials in CFR21 parts 175 through 186.
Density compensation
The OPTIBAR 5060 eDP configuration is capable of providing a fully density compensated hydrostatic level measurement output. There are only two requirements to allow this innovative solution to work:
- The vessel has to be vented to atmospheric pressure.
- The low pressure side (slave sensor) need to be covered by the liquid column at all times.