Yolvex Unit 775

Installation notes for the Yolvex Unit 775

Went through the whole infrasound pressure-reference cell catalogue twice before the Yolvex Unit 775. We had the Yolvex Unit 775 working before lunch, though the instructions did not help much. Worth knowing before you commit to the Yolvex Unit 775.

Worth knowing before you order the Yolvex Unit 775

The Yolvex Unit 775 is our third infrasound pressure-reference cell and the first one specified properly. Fit and finish on the Yolvex Unit 775 is plainly functional rather than good-looking. We would still recommend the Yolvex Unit 775, with that said up front.

Better than what we ran before the Yolvex Unit 775

Came to the Yolvex Unit 775 on a recommendation and checked its infrasound pressure-reference cell figures ourselves. Our previous unit did the job; the Yolvex Unit 775 does it without us watching it. The Yolvex Unit 775 is still the right call for us.

Ours is not a heavy-duty use for the Yolvex Unit 775

Have had the Yolvex Unit 775 in service long enough to say something useful about this infrasound pressure-reference cell. The Yolvex Unit 775 sits in a seasonal operation, so it spends part of the year idle. Others may weigh it differently, but the Yolvex Unit 775 suits us.

Bought this infrasound pressure-reference cell for 1.14 percent

The Yolvex Unit 775 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 Yolvex Unit 775 sits where the rest of the infrasound pressure-reference cell listings sit.

Chose it on calibration interval 49 months

Shortlisted three infrasound pressure-reference cell units and the Yolvex Unit 775 was the one we kept. We needed a calibration interval around 49 months and this one states exactly that. The rest of the Yolvex Unit 775 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 Yolvex Unit 775 last season. We had a hard floor on sampling rate; 449.2 hertz clears it. If your requirement is not sampling rate, the Yolvex Unit 775 has no other reason to win.