Instrumentation Service Group

Non-repairable analyzers don’t just fail — they cost you.
From unexpected replacements to extended downtime, the hidden expenses add up fast.

See why choosing repairable, field-ready analyzers matters.
Visit our website: www.isg-us.com

Measure smarter. Operate safer.
ISG delivers gas measurement and field instrumentation built for reliability — so your team can work confidently in any environment.

Built tough for the harshest sites: ISG O₂ Analyzer.

Designed for reliability in demanding environments, the ISG O₂ Analyzer delivers accurate readings you can count on—rain or shine, day or night.

When performance and durability matter, trust ISG to keep your operations running safely and efficiently.

H₂S doesn’t wait — and neither should you. ⚠️

Stay ahead of danger with real-time H₂S monitoring that keeps your team and site safe around the clock.

Visit us at our website: www.isg-us.com/process-analyzers

“O₂ Sensor replacements: field-proven, lab-tested.”

Reliable performance you can count on—designed to last and keep your operations running smoothly. Tap through our carousel to learn why these sensors are trusted in the field and validated in the lab.

Want to get even more from your O₂ sensors? Check out our blog on Extending the Life of Your O₂ Sensors: Best Practices for expert tips!

👇 View and comment here: www.isg-us.com/post/extending-the-life-of-your-o-sensors-best-practices

Frequent sensor failures don’t just waste time — they drive up maintenance costs, create safety risks, and leave your operators in the dark.
That’s why we’re opening the floor:

👉 What’s your biggest challenge with O₂ or H₂S sensors?
👉 Is it calibration drift? Moisture damage? False alarms?

Our engineers troubleshoot these issues daily in the field, and we’ll share proven fixes that cut downtime and keep your systems running smoothly.

Drop your questions in the comments, let’s solve them together.

Most techs miss these 4 simple steps when testing O₂ analyzer alarms — and it ends up costing hours of troubleshooting in the field.

Don’t skip them. Check the list, save the time. ⏱️

Personal monitors can miss what matters.
ISG’s ambient air H₂S analyzers catch risks in real time — keeping crews safer, every shift.

“From our first natural gas project, I learned one thing: reliability isn’t a feature — it’s a habit.”

When we started out, I thought innovation meant adding more features. But standing in the field with mud on our boots and real flow data at stake. I learned quickly that features don’t matter if the system can’t be trusted day after day.

Reliability isn’t a box you check. It’s a discipline. It’s designing for harsh conditions, thinking about what happens at 2 a.m. during a storm, and making sure your equipment still delivers.

At ISG, we’ve built our measurement and monitoring solutions around that principle. Because in the field, dependability always beats shiny add-ons.

O₂ leaks in pipelines? Trace them fast with portable oxygen monitoring.

Even trace oxygen can speed up corrosion, damage additives, and degrade gas quality yet fixed analyzers and manual checks often miss the problem.

With portable O₂ monitors, your crews can:
✔️ Pinpoint leaks on-site in real time
✔️ Detect oxygen at trace levels (ppm) with precision
✔️ Verify repairs instantly and log data for compliance
✔️ Improve safety in hazardous or remote areas

Stay ahead of O₂ leaks with portable monitoring.
Contact ISG today to learn more.

At ISG, we both sell and deploy the SignalFire Ranger because it’s one of the most reliable and flexible wireless telemetry devices in the field.

The Ranger provides cellular-based remote monitoring for sensors with Modbus, analog, or digital outputs, making it easy to connect pressure, level, flow, and other critical instruments without complex infrastructure.

Why it’s part of our deployments:
• Proven in the field – rugged, industrial-grade design built for oil & gas and remote operations.
• Flexible I/O – supports Modbus RTU, analog (4–20mA, 1–5V), HART, and digital signals.
• Fast integration – plugs directly into our Trinity SCADA platform for seamless visibility and control.
• Lower cost of ownership – reduces wiring, speeds up deployment, and simplifies maintenance.

We use the Ranger in our own projects because it delivers dependable data from remote assets, and we offer it to our customers for the very same reason.

🚨 5 Key Features of a Smart H₂S Monitoring Station 🚨

Discover the must-have design elements that keep your operation safe, accurate, and compliant. From real-time alerts to streamlined maintenance, these features make all the difference.