Fensor builds portable, high-accuracy instruments that verify and calibrate on site — no disassembly, no lab downtime.
From SF6 density monitors on live switchgear to humidity probes in the field: we bring the reference to the equipment.
Fensor focuses on two demanding checks the industry used to send back to the lab — SF6 density-monitor verification and relative-humidity calibration — and makes them possible in the field, fully traceable.
Verify the switching points of SF6 gas density monitors on energised circuit breakers and GIS — on site, without disassembly and with zero emission. F-Gas compliant, forgery-proof printed proof.
discover the densiSCAN R5 →
Generate any relative humidity from 2 to 98 %rh and calibrate humidity probes, transmitters and data-loggers of any brand — in the lab or on site, traceable to an MBW 473 chilled-mirror reference.
discover the HG-101 →The same principle drives both instruments: don't move the equipment to a laboratory — move a traceable reference to the equipment, and prove the result on the spot.
Verify and calibrate where the instrument actually works — energised, installed, in place. No removal, no downtime.
ISO 17025-traceable results with a printed or exported record you can hand straight to an auditor.
RDSa rotary dilution for humidity and controlled density simulation for SF6 — developed and built in-house.
Rugged, sealed transport cases that shrug off dust, knocks and weather — engineered to be carried to the substation or the plant, used hard, and brought home.
Calibrate and verify the probes, transmitters, loggers and density monitors you already run — whoever manufactured them.
Designed, built and supported in Paris — in the country that gave the world the metric system and hosts the BIPM, home of the SI. Long-term parts, calibration and expertise.
Fensor instruments are used wherever a reading has to be trusted — and proven.
SF6 density-monitor verification on HV/EHV circuit breakers and gas-insulated switchgear (GIS).
Reference-grade humidity generation for accredited and in-house calibration of probes and loggers.
On-site RH calibration of monitoring sensors and data-loggers, without breaking controlled environments.
Verify the humidity loggers and recorders that protect stock, cold chains and controlled warehouses.
Portable kits that travel to the substation or the plant — a full day of checks on a single battery.
Fast, stable, silent humidity setpoints and traceable SF6 threshold checks for benches and labs.
Fensor is a French manufacturer of high-accuracy calibration and measurement instruments, based in Paris. We specialise in two demanding fields — SF6 density-monitor verification for high-voltage switchgear, and relative-humidity calibration — with a single obsession: making the reference portable, so the check happens where the equipment is.
A quote, a datasheet, or a demonstration with your own equipment — we reply within one business day.
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