4–75%
It burns across a very wide range
Hydrogen can burn in air anywhere from 4% to 75% by volume. Most fuels have a much narrower range.
Autoplay patrol
Cbot patrols the site and scans each inspection point.
Cbot · hydrogen leak-check robot for open-air sites
Cbot drives your hydrogen leak-check round. Every joint, from a safe distance.
Hydrogen leaks are hard to see and impossible to smell. Cbot drives a set route outside the hazardous core, checks joints and valves from 15–30 ft away, and sends a reading and a map pin when something is wrong.
Works in Zone 2 and open-air areasAlarms routed to the right personEvery reading saved with time and place
Burns from4% in airLowest level at which hydrogen can burn
Common alarm25% LEL ≈ 1%A common alarm set point
Scan standoff15–30 ftSafe scan distance
Console levels10% / 25%Warn and alarm, % LEL (examples)
01Interactive console
Drive Cbot. Find the leak.
Pick a problem to watch the story play out. Or take control: click a spot on the map, use the arrow keys, or use the pad below the map. If you leave it alone, Cbot keeps patrolling.
The site has an electrolyser hall, a compressor shelter, a hydrogen storage bank, a pipe rack with flange F-3 and valve manifold V-7, a vent stack, a truck bay and a robot dock. Zone 1 and Zone 2 areas are shaded.
Copy this link:
Drive it yourself
Send Cbot to
Click the map first, then use ↑↓←→ or WASD to drive and Space to scan.
Tap the map to send Cbot, or use the pad.
H₂ at sensorClear
0ppm0.0% LEL
- Peak this scan
- Site time
- 09:00:00
- Location
- Cbot dock
- Activity
- Idle
- Standoff
- 15–30 ft
Alert sentSimulated
Mission log · Autoplay0 events
| Time | Location and action | Reading |
|---|
Product previewSimulated data and simulated siteWarn 10% LEL, alarm 25% LEL. Each site sets its own alarm levels.Time runs 3× faster
Today vs with Tera
Illustrative example · not measured at a real site| What happens | Today (example) | With Tera (example) |
|---|---|---|
| Night alarm | On-call person drives in and walks into the area to look. | Cbot checks first. The person arrives knowing where and how bad. |
| Checking joints and valves | A person with a handheld detector, once a shift. | Every round, on the schedule you set, day or night. |
| Record of each check | Notes written by hand after the round. | Time, place and reading saved for every stop. |
| Time to confirm where a leak is | ~40 min (illustrative) | ~5 min (illustrative) |
02The problem
Hydrogen leaks are easy to miss
Hydrogen is the smallest molecule. It escapes through fittings, seals and valves. People can't see it, smell it or feel it. Fixed detectors only watch the spot where they are mounted.
Almost invisible
The flame is hard to see
Hydrogen burns with an almost invisible flame. A person can walk close to a fire without knowing it is there.
14× lighter
It rises and collects under roofs
Hydrogen is 14 times lighter than air and rises at almost 20 m/s. Indoors it can collect in the upper part of a room.
No odour
You can't smell it
Hydrogen has no colour, smell or taste. No known odorant is light enough to travel with it, so gas companies can't add one.
10 ppm
A small leak the fixed detector missed
At one site, a leak at a pipe fitting was not picked up by the fixed detector. A safety officer found it with a portable detector during a routine check.
169 ppm
A compressor seal leak
At a refuelling station, O-rings in a compressor leaked. The detector read 169 ppm against a 100 ppm alarm set point, and the station stopped.
100% LEL = 4% H₂ = 40,000 ppmLower explosive limit (LEL) of hydrogen in air.
Warn at 10% LEL ≈ 4,000 ppmFirst alarm level in one published site procedure.
Alarm at 25% LEL ≈ 10,000 ppmA common set point.
Each site sets its own alarm levels. The console uses 10% and 25% LEL as examples.
03The solution
A mobile check that drives the round for you
Cbot adds a moving sensor to your fixed detectors. It goes where a person would go on a round, at any hour, and leaves a record of every check.
A
Drives a set route
Cbot patrols the open-air and buffer areas of your site on a schedule. It docks to charge outside the hazardous area.
B
Scans from a safe distance
At each joint or valve it stops 15–30 ft away and sweeps its acoustic leak camera across it, like a guard sweeping a flashlight, then confirms any leak with its hydrogen sensors. Thermal, sound and camera checks run at the same stop.
C
Tells the right person, fast
A reading over the set point sends an SMS and a pin on the site map. Every reading is saved with the time and place.
Built for hydrogen. Standard infrared gas cameras cannot see it, so Cbot finds leaks by sound and confirms them with dedicated hydrogen sensors.
04How it works
From a reading on Cbot to a message on your phone
Cbot
Senses
- Hydrogen sensors: catalytic (% LEL), palladium or electrochemical (ppm)
- Thermal camera
- Acoustic leak imager
- Zoom camera for gauges
Edge computer
Decides on board
Turns raw readings into clear events. Filters out steam and dust. Reads gauges. Keeps working if the network drops.
Tera monitoring
Alerts and records
- Live site map with pins
- Your alarm set points
- SMS to the right person
- Full log with time and place
Your systems
Fits what you run
Sends events to your SCADA or PLC over Modbus or MQTT, and to your on-call and maintenance tools.
Runs on the Tera monitoring platform over a secure cellular link. Setup is tailored to your site.
05Pilot
Start small, in the buffer zone
A pilot stays out of the hazardous core. It proves the route, the readings and the alerts before anything bigger.
Walk the site with us
Agree the route, the inspection points and your alarm set points.
Patrol the buffer zone
Cbot works in Zone 2 and open-air areas just outside the hazardous core.
Connect the alerts
Choose who gets each SMS, map pin and daily report.
Review together
Look at the log, any misses and any false alarms. Then decide what comes next.
06FAQ
Questions
Can Cbot go inside a hydrogen hazardous area?
Not today. Hydrogen is in gas group IIC, the strictest group, so Cbot works in the buffer zone and the console keeps it out of Zone 1.
Does it replace our fixed gas detectors?
No. Fixed detectors stay. Cbot adds a moving check between them and covers the joints and valves that have no detector of their own.
What does it measure?
Hydrogen in ppm and as a share of the lower explosive limit (% LEL). Hydrogen cannot be seen by infrared gas cameras or laser methane detectors, so Cbot finds leaks with an acoustic leak camera and confirms them with hydrogen point sensors. Exact models are chosen in the pilot. Cbot can also take thermal images and read gauges with a camera.
What happens when it finds a leak?
It holds on the target and keeps reading. Above your warn level it sends a notice. Above your alarm level it sends an SMS and a pin on the site map. People decide what to do next.
Is the console data real?
No. The site, the leak and the readings are simulated. The alarm levels and hydrogen facts come from published hydrogen safety sources.
Cbot hydrogen pilot
Plan a hydrogen pilot
Tell us about your site. We'll map a first route and show you what Cbot would check.