Our RH probe sweeps every rack inlet in one ultra-fast pass, grading each row against the ASHRAE ≤ 60 % RH recommendation and the 57 % corrosion threshold — and catching the local humidity spikes a single room sensor averages away.
Corrosion needs moisture to run. The humidity at each inlet decides whether deposited salts stay dry or turn into an electrolyte — so we map it across every rack face, fast.
A single room probe reports an average; corrosion happens locally. We log inlet RH across the whole row, so a wet pocket can’t hide inside a comfortable mean.
RH · per positionA full row in a single sweep — no rack-by-rack stops, no maintenance window. Hundreds of points per row, captured continuously as we walk the aisle.
≈ 900 points / rowEvery row is graded against the ASHRAE ≤ 60 % RH recommendation and the 57 % chloride deliquescence threshold — flagged wherever RH crosses into corrosion-risk territory. Pass or fail, no interpretation needed.
graded · audit-readyChloride salts on a board only corrode once the air is humid enough to dissolve them — their deliquescence point sits near 57 % RH. Below it the attack essentially stalls; cross it and an electrolyte forms and corrosion accelerates. RH is the controllable half of the equation — pair it with ISA 71.04 coupons for the contaminant half.
Across most of the row, inlet RH sits below about 57 % — under the deliquescence point of the chloride salts that drive localised corrosion. While it stays there, deposited salts can’t take up enough water to form an electrolyte, and the attack essentially stalls.
A row can average safely below 57 % yet swing above it locally and intermittently — and those brief, wet excursions are enough to start localised, spot corrosion. A single averaged room sensor never sees them; a high-resolution scan catches every spike, by position. That’s corrosion happening between the readings.
A one-page RH profile per row — the envelope, the 57 % and 60 % thresholds, and every excursion above the line flagged by position. Here’s a sample.
We move through each cold aisle once. The RH probe logs inlet humidity continuously against position — live, with nothing to power down.
Readings are mapped to row length and tested against the 57 % corrosion threshold and the ASHRAE ≤ 60 % RH recommendation, row by row, flagging every excursion above the line.
You receive an audit-ready report with a verdict and the numbers behind it for every row — and the exact positions where RH spikes into corrosion-risk territory.
Graded against the ASHRAE ≤ 60 % RH recommendation and the 57 % corrosion threshold, per row, with the measured peaks behind every verdict. Evidence, not impressions.
A room average can read safe while a single rack face swings wet. Scanning every inlet finds the local RH spikes that quietly drive spot corrosion on boards and connectors.
Fast enough to run on a live floor. No rack-by-rack teardown, no scheduled downtime, no risk to running equipment.
Tell us the site and the number of rows — we’ll scope a single-visit RH scan and send back a sample report for your hardware.