Pressure measurement
LORA-SYSTEM FOR MONITORING HIGH PRESSURE GAS
n Nigeria, experts use a LoRaWAN network to monitor remote natural gas wells. Sensors positioned on site measure the gas pressure. Low pressure in the pipes or annular space is recorded as critical data. This data is then collated and transmitted over long distances via the LoRaWAN network, through a «backhaul», using gateways. A “backhaul” is the connection between the base station and the core network. This allows any data collected to be processed further using computer or mobile telephone applications. Thanks to the real-time data supplied via the sensors, businesses are now able to respond to issues on site immediately. In the past, it would take days for it to become apparent to staff that production had come to a halt.
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KERLINK GATEWAYS Kerlink is a specialist provider of Internet of Things (IoT) solutions. The “Wirnet iStation”, which is integrated into the monitoring system, is a LoRaWAN gateway. The gateways boast a reliable, robust casing and excellent operating efficiency, even in harsh environments. They are either operated via the network or are self- sufficient thanks to small photovoltaic cells.
SRETT BUMBLEBEE SENSORS BumbleBee sensors from SRETT enable remote monitoring of pressure and temperature data in
IoT gateways and “BumbleBee” sensors with integrated KELLER pressure transducers combine to create an automated monitoring system in a Nigerian gas field. Businesses can use this method of remote monitoring for high pressure gas to make their operations more efficient and, in doing so, reduce their environmental footprint.
gas field facilities. They allow operators to receive information about status changes and potential dangers in real-time. The devices are ATEX certified, wireless and battery-operated, and take advantage of plug-and-play technology. BumbleBee sensors come in various models, accommodating the pressure ranges 10 bar, 100 bar, 400 bar and 1,000 bar. The devices are used to monitor the refining process as well as the wellhead pipes and annulus.
KELLER SENSORS IN BUMBLEBEE DEVICES SRETT’s BumbleBee contains the 20S series from KELLER. As there are no internal seals,
medium incompatibility and defective seals can be ruled out as the cause of any outages. Thanks to its thread connection, the 20S can be easily installed in proprietary devices and is thus ideal for OEM applications. The pressure transducer’s high long term stability and proof pressure, as well as its optimised thermal behaviour, mean it is an ideal choice for installing inside the BumbleBee housing at remote locations where system maintenance and repairs can prove arduous tasks. As well as this, calibration with a mathematical model ensures that measurements are precise, even when the outdoor temperature changes. The 20S series inside these BumbleBees also measures ambient temperature. Temperature measurements are most important in places where cold weather can be expected, to the extent that pipelines may even freeze.
A LOOK INTO THE FUTURE The use of BumbleBee sensors and gateways in Nigeria shows that these solutions are technically robust and cost-effective for remote, arid zones, and even forests and offshore operations.
The automated monitoring system in the Nigerian gas field has enabled companies to reduce the number of weekly inspection- and service-related journeys their employees take. The system not only saves the teams from having to make unnecessary trips, but also improves production efficiency by minimising system downtime.
KELLER 52
keller-druck.com January 2024 Instrumentation Monthly
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