12 Channel NEMA 4 Temperature Recorder

The Maintenance Mgr. of a steel plant in the Midwest called with an application for a portable recorder that can measure, record, save and print temperatures of 12 zones in a high temperature oven. We knew we could do it because we recently put together a similar portable recorder for an asphalt plant here in Pennsylvania. That customer wanted a recorder with both type K and type J thermocouple inputs with a strip jack panel for quick disconnect in the field. They use it to provide asphalt production temperature documentation to the state of Pennsylvania when doing a state funded project.


Manufactured for a Steel Plant

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Manufactured for An Asphalt Plant

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One of the challenges was to find a suitable enclosure to house the recorder. Recorders are typically long and narrow. A recorder 6″ x 6″ x 10″ long would require a very large enclosure due to the 10″ depth. Deeper panels generally have a large front panel. Fortunately, we have access to a custom panel manufacturer that supplies us with handmade fiberglass and metal enclosures fabricated to fit the instrument perfectly – and no larger. We even specify front and back hinged doors which facilitates access to the chart and pen up front as well as downloading data to a memory stick. The customer can also easily access wiring through the back door. And of course a nice ergonomic handle for toting it around.

It turned out beautifully. Another satisfied customer. Have a look for yourself –


Charlie’s Smokehouse

In 2009 we received a call from a fellow who identified himself as “Charlie of Charlie’s smokehouse in Wisconsin”. Naturally, the first thing that came to mind was meat! It turns out that Charlie is the proprietor of “Charlie’s Smokehouse” located in Ellison Bay, Wisconsin on Lake Michigan and they smoke fish – not sausage – freshly caught from the deep blue waters of the Lake.



Charlie, like many owners of food processing plants, is paid a visit periodically by the FDA – in Charlie’s case, the food safety division of the Wisconsin Department of Agriculture. The Department inspects the facility and verifies that the company has their HAACP program in place and working. HAACP is an acronym for Hazard Analysis & Critical Control Points and is a management system in which food safety is addressed through the analysis and control of biological, chemical, and physical hazards from raw material production, procurement and handling, to manufacturing, distribution and consumption of the finished product. For more information on HAACP visit


Years ago, the manufacturer or processor would check the temperature in the smoke house and the cold storage facility with a bimetal thermometer and write the readings down on a piece of paper. Then along came circular or strip chart recorders. Recorders require some maintenance, including changing charts and pens daily or weekly. When Charlie called he was looking for a more “modern day” solution so we recommended the Madgetech Quadtemp2000 – a multi channel datalogger – which accepts up to four thermocouples simultaneously, records temperatures for weeks at a time and can be downloaded to a computer and displayed in an excel spreadsheet or emailed to the appropriate government agency, customer, etc. Within days Charlie had his new automated HAACP compatible temperature logging system up and running.



No more daily trips to the smokehouse and cooler to manually record the temperatures or fiddling with charts – it’s still running perfectly today. I know because I recently spoke with Charlie to order my smoked fish for the holidays. It is really tasty and I highly recommend it. I save some to make fish dip. Yum! Go to Charlie’s website and see for yourself!

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