Natural Gas Flow from the Main into Plant
With concern for energy consumption, monitoring the instantaneous natural gas mass flow rate coming into the plant is critical because it provides information about the plant’s natural gas demand. The conventional billing meter only reports consumption over a fixed period (i.e., monthly). Whereas, a thermal mass flow meter monitors the flow rate, as well as consumption; thus, it provides real-time feedback about plant upset conditions, peak demand, inefficiencies, and wasted energy.
ISO 50001 and Energy Management
The Plant Manager, Maintenance Manager, Six Sigma Manager, or Results Engineer all benefit from the readily available information that comes from a gas line, of an independent mass flow meter, entering the plant. Furthermore, the newly promulgated ISO 50001 standards define the best practice for energy management, and a rate flow meter in series with the billing flow meter can play a big role.
Gas Flow Measurement
Sage Prime provides both easy-to-install insertion thermal mass flow meters as well as in-line thermal flow meters, with built-in flow conditioners that measure and report the mass flow rate of natural gas. This type of direct mass flow meter does not require separate temperature or pressure transmitters, has no moving parts, is highly accurate and repeatable, and has a negligible pressure drop. Most importantly, the Sage Thermal Mass Meters have extraordinary rangeability, of at least 100 to 1, with resolution as much as 1000 to 1; this provides the dynamic operating range and sensitivity necessary to account for wide plant gas demand, whether it be at peak loads, or during the third shift with the minimal gas requirement. The meters have bright graphical displays of flow rate, totalized flow and gas temperature as well as continuous diagnostics, 4 -20 mA output of flow rate, pulsed outputs of consumption, and fully Modbus compliant RS485 RTU communications. Sage also offers a remote style flow meter, with up to 1000 feet of lead length compensated cable. This provides the opportunity to monitor the mainline from a distant control room, where the electronics and powering are done at the transmitter – yet, the probe or flow body simply has a terminal junction box. Optional wireless Modbus outputs can also be furnished as an option, if necessary.