Communications/Telemetry
Real-time alerts identify which areas need attention, so operators can make informed decisions on how to act. Meanwhile, the state-owned Tüpraş refinery in
Izmir, Turkey (Figs 2 and 3), has placed an order with Emerson Process Management for a tank gauging system that includes 85 wireless TankRadar Rex radar level gauges. Te order follows Tüpraş Izmir’s extensive testing of 21 additional devices in the same application.
Te gauging system will provide accurate, reliable
level measurements on some of the refinery’s most critical oil-movement tanks.
Refining and storage capacity Te Izmir facility has a refining capacity of 11m t/y and storage capacity of 1.9m m3 in 164 tanks – including 44 lube-oil storage tanks that were already being monitored using wired TankRadar Rex level gauges from Emerson. On other tanks, however, the existing
non-Emerson gauging system sometimes had communication problems and gave incorrect readings because of damage to cables during excavations in the field. In addition, support personnel were not always
available when needed. Tüpraş first considered replacing the trouble-
prone older system with additional wired TankRadar Rex level gauges, which had proven to be very reliable, accurate and almost maintenance-free since they were installed at the refinery in 2007. Because the tanks are spread over a large area and existing cabling and junction boxes were not up to standard, the high cabling and installation costs of this approach made wireless technology more
appealing. “Ground conditions make excavation for new cable runs difficult, but with Emerson’s Smart Wireless solution we can minimise costs for cabling, cable trenches, conduits, and cable trays,” said Ali Erener, project chief engineer at Tüpraş Izmir. “Going wireless also gives us the flexibility to add more devices in the future – not only for level and temperature measurements, but also for tank water control and nitrogen pressure control at our blanketing tanks, which are far from the control room, as well as other applications.”
Fig 2. The Tüpraş refinery, Izmir, Turkey, has placed an order with Emerson Process Management for a tank gauging system that includes 85 wireless TankRadar Rex radar level gauges.
Te Yokogawa DTSX200 distributed temperature sensor (DTS) is used to monitor temperature, leaks, and flow in oil/gas downhole, pipeline, LNG/ refinery tank/reactor vessel, fire detection, and other industrial thermal applications. Yokogawa says the
True wireless gas detection I
n 1999 Gastronics pioneered the first all-in-one wireless gas monitor in which the radio is an integral part of the gas monitor. Now the True Wireless gas detection system offers the most economical solution for monitoring gases from remote locations. Te company says its UHF/ VHF monitors offer up to six watts of power and are capable of transmitting in and around steel structures and over long distances in worst case scenarios. True Wireless is also available for ISA100.11a MESH networks and M2M GPRS cellular radio. Among its benefits are: flexible
sensor placement -line of sight not required; communication with both Gastronics’ stationary and portable RTUs; offers additional analogue inputs and discretes; is a scalable system; is compatible with DCS systems using standard Modbus-RTU Protocol; and integrates easily with SAFER Systems software. Gastronics’ SL-Series 4-20mA gas monitors are designed for toxic gases, using electrochemical-based sensors. Te transmitters are approved for class 1, division 2 locations and do not require an intrinsically safe barrier. Tey are designed for one
person calibration with a maintenance mode that will prevent alarms while calibrating.
Te company’s radio telemetry consists of complete RTUs that use a Windows-based programming software with a complete library of controls, statistics, communications, ladder logic, I/O, maths, tables and more. Its RTUs can integrate with land- based, satellite, and cellular radio technology. Systems are compatible with Modbus-RTU for integration with distributed control systems and other SCADA packages. ●
www.engineerlive.com 43
Page 1 |
Page 2 |
Page 3 |
Page 4 |
Page 5 |
Page 6 |
Page 7 |
Page 8 |
Page 9 |
Page 10 |
Page 11 |
Page 12 |
Page 13 |
Page 14 |
Page 15 |
Page 16 |
Page 17 |
Page 18 |
Page 19 |
Page 20 |
Page 21 |
Page 22 |
Page 23 |
Page 24 |
Page 25 |
Page 26 |
Page 27 |
Page 28 |
Page 29 |
Page 30 |
Page 31 |
Page 32 |
Page 33 |
Page 34 |
Page 35 |
Page 36 |
Page 37 |
Page 38 |
Page 39 |
Page 40 |
Page 41 |
Page 42 |
Page 43 |
Page 44 |
Page 45 |
Page 46 |
Page 47 |
Page 48 |
Page 49 |
Page 50 |
Page 51 |
Page 52 |
Page 53 |
Page 54 |
Page 55 |
Page 56 |
Page 57 |
Page 58 |
Page 59 |
Page 60 |
Page 61 |
Page 62 |
Page 63 |
Page 64 |
Page 65 |
Page 66 |
Page 67 |
Page 68 |
Page 69 |
Page 70 |
Page 71 |
Page 72 |
Page 73 |
Page 74 |
Page 75 |
Page 76 |
Page 77 |
Page 78 |
Page 79 |
Page 80 |
Page 81 |
Page 82 |
Page 83 |
Page 84 |
Page 85 |
Page 86