Our first systems were deployed more than 40 years ago — and are still running. This longevity is thanks to an after-sales team that knows every piece of equipment inside out, and training that makes your teams fully self-sufficient.
Our reputation is built on the reliability of our systems, our ability to upgrade them and our support when you need it. One point of contact, one dedicated team.
Your request is always acknowledged. Remote access to equipment enables us to respond as quickly as possible.
As the designer and manufacturer of our equipment, we repair all our own systems in our workshops.
Keeping pace with technological developments and avoiding compatibility issues: we support your hardware and software migrations.
Our after-sales team is always involved in testing our R&D innovations, ensuring in-depth knowledge of our solutions from the outset.
You receive a set of tested and calibrated detectors with a 12-month warranty at a reduced price. You replace yours in just a few minutes — the system never shuts down — then return the old ones to us for refurbishment.
Enter maintenance mode and set the required duration.
Unscrew the cover, unplug the detector, connect the new calibrated detector and screw the cover back on — ensuring the address matches the label.
Check the entire system using calibration gas.
Exit maintenance mode: monitoring resumes with calibrated detectors.
Return your old detectors to us for refurbishment.
A calibration certificate is sent to you as soon as we receive your detectors.
We calculate the calibration intervals for your detectors and your next due date.
Question 1 / 3 — Your installation
Choose the type of installation covered by gas detection.
Select all gases present at your installation — multiple selections allowed.
The detector technology determines its calibration interval: electrochemical (CO) every 5 years, semiconductor (flammable gases, refrigerants, specific gases) every year.
Enter the approximate date of your last calibration (or commissioning).
Choose the year, then the month — an estimate is fine.
| Gas monitored | Detector | Technology | Calibration |
|---|
Your 5-year schedule
Pre-filled with your answers — just add your contact details.
Standard exchange is a circular approach: we collect your old detectors to give them a second life.
We collect your detectors for refurbishment — no more « throwing away and starting from scratch ».
Refurbished and calibrated detectors are available at a lower cost, with the same quality.
Severely damaged detectors are dismantled: their components replenish our spare parts stock.
Your installation maintains its detection performance in compliance with current regulations.
Select a card. The questionnaire automatically adapts to your request and explains how your case will be handled.
Your equipment has failed or is behaving unexpectedly.
Describe my fault →Keep your installations reliable with scheduled periodic visits.
Build my contract →Compliance, performance, obsolescence or changes to your site.
Define my audit scope →A Hesion technician at your site : commissioning, configuration, troubleshooting.
Schedule a visit →A fault under warranty ? Check your coverage and open a case.
Open my case →Firmware, new features, regulatory changes.
View updates →Designed to be « Plug & Work », our systems can be deployed without mandatory commissioning services. But to go further — operating, maintaining and troubleshooting — nothing replaces training from our Technologists. Three learning paths, one goal: your independence.
½ day · On site or remotely
For operators and managers: understand how your solution works day to day and interpret its indicators with confidence.
1 day · On site or at our workshops
For technical teams: operate controls, configure thresholds and handle everyday situations without relying on us.
2 days · At our workshops (Yvelines)
For maintenance teams: independently diagnose faults, carry out periodic checks and perform preventive maintenance.
These learning paths cover all our solutions: Hesion Access, Hesion Sense, Hesion Eole, Distalarm and Flairgaz. The content is tailored to your installation and actual equipment.
Tell us what you need: the solution involved, the number of participants and your circumstances.
Our account managers will call you back within 48 business hours to tailor your learning path.
We propose a date, a location and a programme tailored to your equipment.
Training takes place — and your teams leave ready to work independently, with their training materials.
Your data is used only to process your request and is never shared with third parties.
Our after-sales team is here to help with all your enquiries, and telephone support is free for our products.
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