Gas & liquid measurement consultancy · Houston, TX
Ardis Bartle
Founder & President, Apex Measurement & Controls
“Measuring What Matters” — independent measurement advisory since 2004.
20+ yrs in energy Gas · Crude · NGL · CO₂ · RNG MBA · Texas State AGA · API · ISA · GPA
On the committees that write the standards: AGA Transmission Measurement· API COFGM· ISA · Treasurer· ANSI B109· GPA
About
Twenty years of judgment applied to the numbers that settle contracts.
Ardis Bartle founded Apex in 2004 to give natural-gas producers, transmission, and distribution companies an independent read on their measurement — orifice, ultrasonic, and turbine — across gas, crude, NGL, liquids, CO₂, and RNG.
Her edge is exposure at every level of the industry, from the gas analyst to the field technician, and a seat on the committees that write the rules the rest of the business measures by. In partnership with the Gas Certification Institute, she also builds curriculum and Sarbanes-Oxley–compliant measurement SOPs.
2004Apex founded
20+Years in energy
~19KLinkedIn followers
4AGA / ISA honors
What Apex does
- Identifying and resolving measurement imbalances
- Reviewing and validating balance data
- Developing and implementing Standard Operating Procedures (SOPs)
- Targeted measurement training programs
- Back-office measurement operations support
Experience
A career, then a seat at the table.
From building measurement software to writing the standards the industry runs on.
Consultancy
2004 — Present
Founder & President
Apex Measurement & Controls
Independent gas & liquid measurement consulting and training — imbalance resolution, data validation, SOPs, and back-office support.
Earlier career
Pre-2004
Business Strategy & Sales
PGAS
Development, strategy, and sales for PGAS — one of the industry’s leading gas-measurement software systems.
Pre-2004
Measurement & Instrumentation
Praxis Instruments, Houston
Field measurement and instrumentation work across natural-gas operations.
Industry leadership & standards committees
2024 — 2025
Treasurer
International Society of Automation (ISA)
Executive board; part of ISA’s 2026 leadership team.
2018 — 2020
District 7 Vice President
ISA
VP-Elect 2016–2018.
2016 — 2017
President, Houston Section
ISA
2003 — Present
Committee Member (ex officio)
AGA Transmission Measurement Committee
Also serves on the Distribution Measurement Committee; authored the AGA DMC Technical Note on Turbine Meters.
2017 — Present
Voting Member, COFGM
American Petroleum Institute (API)
2014 — Present
Voting Member
ANSI B109
2011 — 2016
Board Director
Western Gas Measurement Short Course
Recognition
Honored by the bodies she serves.
Technical Papers
On the record.
Published work on measurement, SCADA, data validation, and regulation. Search or filter by topic.
- 2010
- 2007 PDF pending
- 2006
- 2005
- 2003
- 2003
- 2002
- 2002
- 2000
- — PDF pending
No publications match that search.
Papers span 2000–2010. Two entries are still being recovered (a 2007 article and the AGA turbine-meter note) and will be linked once located.
Featured
On the mic.
Ardis joins the industry’s podcasts to talk measurement, SOPs, and compliance.
Pipeline Podcast NetworkEpisode 31
Where Do Measurement SOPs Fit In?
Ardis on why standard operating procedures are the backbone of defensible gas measurement.
Listen Pipeline Podcast NetworkEpisode 33
BLM Onshore Order Impact on Pipeliners
What the BLM Onshore Orders mean for measurement and compliance on federal leases.
ListenClients & Partners
Trusted across the measurement chain.
Gas Certification Institute Training partner
EnerSys Corporation Client
Flow-Cal Technology partner
ABB Automation Totalflow Technology partner
Freewave Technologies Technology partner
Contact
Let’s talk measurement.
Ardis Bartle · Founder & President713·446·1902
Have a measurement imbalance, an audit, or a training need? Call directly, or send a note and Ardis will follow up.