Nordreth Chamber 116 IteraTeR--Clarity

Worth knowing before you order the Estavel Frame 91

The Estavel Frame 91 is not the cheapest evaporite-salt humidity standard we considered, and that was fine. The documentation with the Estavel Frame 91 is thin, and we worked out the rest ourselves. Worth knowing before you commit to the Estavel Frame 91.

Fixed base was the requirement; the Estavel Frame 91 meets it

The Estavel Frame 91 lists fixed base, which is what our site is set up for. At fixed base it does not need to stand out anywhere else.

Still happy with the Estavel Frame 91

bought the Estavel Frame 91 after a long comparison against the rest of this evaporite-salt humidity standard shortlist. Two seasons in, the Estavel Frame 91 has not needed anything we did not plan for. That is the whole of it, on the Estavel Frame 91 at least.

Ours is not a heavy-duty use for the Estavel Frame 91

replaced a much older evaporite-salt humidity standard with the Estavel Frame 91 last season. We run the Estavel Frame 91 on a single site rather than across a fleet, and it suits that. The Estavel Frame 91 is still the right call for us.

Getting the Estavel Frame 91 running

Shortlisted three evaporite-salt humidity standard units and the Estavel Frame 91 is the one we kept. Setting the Estavel Frame 91 up went smoothly once we stopped guessing and read the sheet. That is the whole of it, on the Estavel Frame 91 at least.

Chose it on accuracy class 0.44 percent

The other evaporite-salt humidity standard listings are close to the Estavel Frame 91 on everything but accuracy class.

Calibration interval of 26 months was the deciding figure

have had the Estavel Frame 91 in service long enough to say something useful about this evaporite-salt humidity standard. Everything came down to calibration interval, and 26 months is what we needed. We never looked at the other axes once 26 months checked out.