An Emriver out, Em4 design/build, more spring.

An Emriver out, Em4 design/build, more spring.

Jessie and I cranked on Em4 pump testing, electronics, flow measurement, and the dye injection system. We are getting some hard lessons in hydraulics. The piped and centrifugal pump version has important differences from the open-channel kind I know well. Today it was...

Pumping water in the parking lot (Em4 test).

Pumping water in the parking lot (Em4 test).

We tested a new pump and flowmeter for the Em4 today. Taking advantage of a beautiful spring day, we set up outside. True to first tries, the flowmeter didn’t work and the valve manifold cut our pump output to 1/3 of what we needed. But we got most of it...

Emriver to NY State, the Em4 takes shape.

Emriver to NY State, the Em4 takes shape.

Jesse and I worked on the Em4’s control cart today. It’ll hold the main pump, flowmeters, valves, UV sterilizer, and a few other things. Still a big pile of expensive hardware, but soon it’ll be a very nice instrument. Jesse has done a great job on...

The R&D things happen intensely.

The R&D things happen intensely.

Design-build of our first Em4 continues. Jesse worked with our Marion, Illinois machine shop today to finish details on the standpipe mechanism; he and the shop are doing a great job. The design is adventurous, so we’ll either have a beautiful little machine or...

Em4 design and build. And blogging.

Em4 design and build. And blogging.

I finished a lot of admin things today and sent out some invoices for consulting. Just cranked. I’d like to say it was satisfying. It is very interesting, always. My typical day now is like a very busy day at the old home office I had for 16 years, and a very...