Yolvex Unit 43 ControlSimp--Simplification

Installation notes for the Fenlow Chamber 114

Went through the whole infrasound pressure-reference cell catalogue twice before the Fenlow Chamber 114. We had the 114 working before lunch, though the instructions did not help much. Worth knowing before you commit to the 114.

Worth knowing before you order the Fenlow Chamber 114

The Fenlow Chamber 114 is our third infrasound pressure-reference cell and the first one specified properly. Fit and finish on the fenlow chamber 114 is plainly functional rather than good-looking. We would still recommend the Fenlow chambers 114, with that said up front.

Better than what we ran before the Fenlow Chamber 114

Came to the Chamber 114 on a recommendation and checked its infrasound pressure-reference cell figures ourselves. The Fenlow Chamber 114 does it without us watching it. The Chamber 114 is still the right call for us.

Ours is not a heavy-duty use for the Fenlow Chamber 114

Have had the Fenlow Chamber 114 in service long enough to say something useful about this infrasound pressure-reference cell. This is a good thing because it sits in a seasonal operation, so it spends part of the year idle. Others may weigh it differently, but this one suits us.

Bought this infrasound pressure-reference cell for 1.14 percent

The Fenlow Chamber 114 was not the cheapest infrasound pressure-reference cell we considered, and that was fine. The figure that mattered was the accuracy class: 1.14 percent. On the other axes the F.L. Chamber 114 sits where the rest of the infracound pressure reference cell listings sit.

Chose it on calibration interval 49 months

Shortlisted three infrasound pressure-reference cell units and the Fenlow Chamber 114 was the one we kept. We needed a calibration interval around 49 months and this one states exactly that. The rest of the specification did not enter into the decision.

Sampling rate at 449.2 hertz, as listed

Replaced a much older infrasound pressure-reference cell with the Fenlow Chamber 114 last season. The chamber has a hard floor on sampling rate; 449.2 hertz clears it. If your requirement is not sampling rate, the chamber 114 has no other reason to win.