A certificate does not prove a gas detector was ever put on a bench. It proves a document exists, which on paper looks like a measurement. It is not. A buyer who cannot tell the two apart is trusting a word instead of a number, and the number is what a regulator, an auditor or the next contractor wants to see.
Three words, three different things
Suppliers use calibration, inspection and certification as if they mean the same thing. They are three different pieces of work, each returning something different.
| What it means | What you get back | |
|---|---|---|
| Calibration | The instrument is adjusted against a reference of a known value, so its reading is correct again | A dated calibration certificate |
| Inspection | A competent person checks the equipment against the manufacturer's criteria and decides whether it stays in service | A written outcome: pass or fail |
| Certification | A statement that a certificate exists for a given item on a given date | A word, not a measurement |
Calibration and inspection are actions. Certification describes the paperwork that follows one of them, and that is where a buyer can get misled without anyone lying to them.
Certification is a word, not a measurement
Say a detector "comes with certification" and you have said nothing about whether it reads correctly, only that a piece of paper exists. That paper might carry a genuine calibration record with a reference value, an adjustment and a date, in a form someone else can check. It could just as easily be a compliance statement that repeats the model number and says the item was checked, with no figures attached. Both get called a certificate, so the question worth asking a supplier is not whether it comes with certification, since the answer is almost always yes. The question is what the certificate actually shows: a reading, a reference standard and a date, or just the model number repeated back.
An inspection certificate is different again. It is a decision, not a measurement: a competent person checks the equipment against the manufacturer's own criteria and decides whether it can keep working, recorded as pass or fail rather than as a reading.
Why the difference actually matters
Someone eventually files the certificate: in a permit-to-work pack, a compliance folder, or paperwork a client asks to see before letting a crew onto site. One that only states a document exists gives them nothing to check the work against. It is also where a cheaper "certification" service can cost more than a calibration would have: if the paperwork carries no reading, the actual work still has to be redone later, while the equipment ran uncalibrated in the meantime.
What this does not tell you
Knowing the difference does not tell you whether the certificate in your hand is any good. A calibration from eighteen months ago, however well it was done, answers a different question than the one you are asking today: whether the equipment is still inside its interval now. That interval, and where the number comes from, is a separate piece on this site.
What to check before you file it
Before a certificate goes into a compliance file, three things are worth confirming: a real reading rather than a repeated model number, a serial number that matches the unit in front of you, and a date inside the interval your equipment's manual sets, not a generic industry figure. All three take a minute against the document itself.
TopBorneo calibrates and inspects; every unit comes back with a dated certificate, with a copy kept on file. If you already have a certificate and are not sure what it tells you, or a unit is due, send the make, model and serial number to sales (at) topborneo.com, or use WhatsApp. TopBorneo replies with the work each item needs.
Related reading
- Calibration services: what TopBorneo calibrates, services and inspects.
- Portable gas detector calibration: what happens on the bench, and where the interval comes from.
- Calibration certificate copies: how to request a copy of an issued certificate.
- ALTAIR 4XR and 5X servicing: model-specific servicing for MSA's ALTAIR range.