The JT-500 Flow King
The JT-500 Flow King is the industry's most capable ultra-low power multivariable transmitter and gas flow computer for upstream and midstream oil and gas operations.
Measuring gas flow at remote wellheads, meter runs, and pipeline assets has always meant a tradeoff: either you run power and communications infrastructure to the site — trenches, conduit, wired connections, ongoing maintenance — or you accept the limitations of battery-dependent devices that can't deliver the accuracy, I/O, or connectivity your operation actually needs.
The JT500 Flow King was built to eliminate that tradeoff entirely.
Designed by industry experts specifically for the demands of upstream and midstream gas measurement, the Flow King delivers best-in-class accuracy, 11 I/O points, built-in data logging, and full wireless connectivity — powered entirely by an integrated solar panel and rechargeable battery with no external power source required. No trenches. No wires. No support equipment. Just drop it in, point the display toward your receiving RTU, and you're measuring.
The result is up to 60% lower total cost of ownership compared to traditional wired MVT installations — without sacrificing a single point of accuracy or functionality.
What Makes the Flow King Different
Standard multivariable transmitters typically draw 10–12 mA of current just to operate — before you factor in communications. The Flow King operates on less than 500µA. That's 10 to 20 times lower than the competition, and it's the engineering achievement that makes everything else possible: self-powered operation, autonomous deployment, and up to 3.5 years of estimated battery autonomy even when solar harvesting is minimal.
That power efficiency isn't achieved by compromising on performance. The Flow King maintains ±0.1% sensor accuracy while withstanding 133% of upper range pressure limits — meeting the measurement standards that custody transfer and regulatory reporting applications demand.
Ultra-low power consumption
Operates on less than 500µA, 10–20x lower than standard MVTs
Completely autonomous
Integrated solar panel, rechargeable battery, and antenna require no external power or communications infrastructure
±0.1% measurement accuracy
Best-in-class sensor accuracy with 133% upper range pressure limit tolerance
11 total I/O points
Including RTD, analog inputs, and user configurable digital I/Os for a wide range of field measurement applications
Built-in data logging and time-stamping
API-compliant once-per-second measurement with 15-minute averaging of variables and extensions
1,000-ft line-of-sight wireless range
The explosion-proof housing doubles as the antenna; rotate the display toward your receiving RTU for optimal signal
Protocol flexibility
BSAP, Enron Modbus, ROC, and MQTT Sparkplug B ensure compatibility with existing SCADA and RTU infrastructure including legacy Bristol-based systems
Optional cellular modem
For sites where line-of-sight radio isn't practical, cellular connectivity rounds out total independence from wired infrastructure
Where the Flow King Is Deployed
The JT500 is the right solution any time you need accurate, reliable gas measurement at a remote or
Wellhead and production measurement at upstream oil and gas sites
- Midstream meter runs and pipeline measurement points
- Remote compressor station gas measurement
- Replacement of aging wired MVTs and flow computers on legacy BSAP, ROC, or Modbus infrastructure
- New installations where running power and communications to the site would add significant cost
If your current MVT installation requires wired power, regular battery swaps, or a site visit every time you need to pull data — the Flow King is worth a serious look.
